Moved some things out of the MessagePopulatePacket class.

For the love of god remember to update the permissions table and recalculate before starting back up.

.editorconfig

@@ -0,0 +1,4 @@
+[*.{cs,vb}]
+
+# IDE0046: Convert to conditional expression
+dotnet_style_prefer_conditional_expression_over_return = false

.gitignore

@@ -7,6 +7,8 @@ login_key.txt
 http-motd.txt
 _webdb.txt
 msz_url.txt
+sharpchat.cfg
+SharpChat/version.txt
 
 # User-specific files
 *.suo

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019-2022 flashwave
+Copyright (c) 2019-2024 flashwave
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Protocol.md

@@ -0,0 +1,934 @@
+# Sock Chat Protocol Information
+The Sock Chat protocol operates on a websocket in text mode.
+Messages sent between the client and server are a series of concatenated strings delimited by the vertical tab character, represented in most languages by the escape sequence `\t` and defined in ASCII as `0x09`.
+The first string in this concatenation must be the packet identifier.
+
+Updated behaviour is defined through capabilities.
+Further documentation on their behaviour will be added at a later date.
+
+
+## Types
+
+### `bool`
+A value that indicates a true or a false state. `0` represents false and anything non-`0` represents true, please stick to `1` for representing true though.
+
+### `int`
+Any number ranging from `-9007199254740991` to `9007199254740991`, `Number.MAX_SAFE_INTEGER` and `Number.MIN_SAFE_INTEGER` in JavaScript.
+
+### `string`
+Any printable unicode character, except `\t` which is used to separate packets.
+
+### `timestamp`
+Extends `int`, contains a second based UNIX timestamp.
+
+### `user name`
+A `string` containing a user's name.
+
+If the user currently has an AFK tag set through the `/afk`, it is prefixed by `<AFK>_`.
+The `AFK` text can be replaced by any text supplied to the `/afk` command as an argument, the original PHP Sock Chat and SharpChat force this text to uppercase and limit it to 5 characters.
+
+If prefixed by a `~`, it is not the user's actual name but a nick name.
+
+### `channel name`
+A `string` containing only alphanumeric characters (any case), `-` or `_`.
+
+### `colour`
+Any valid value for the CSS `colour` property.
+Further documentation can be found [on MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value).
+
+### `message flags`
+Message flags alter how a message should be displayed to the client, these are all `bool` values.
+The parts are as follows:
+
+ - Username should appear using a **bold** font.
+ - Username should appear using a *cursive* font.
+ - Username should appear <u>underlined</u>.
+ - A colon `:` should be displayed between the username and the message.
+ - The message was sent privately, directly to the current user.
+
+As an example, the most common message flagset is `10010`. This indicates a bold username with a colon separator.
+
+### `user perms`
+User permissions are a set of flags separated by either the form feed character (`\f` / `0x0C`) or a space (' ' / `0x20`).
+The reason there are two options is due to a past mixup that we now have to live with.
+Which of the methods is used remains consistent per server however, so the result of a test can be cached.
+
+| Type   | Description |
+|:------:| ----------- |
+| `int`  | Rank of the user. Used to determine what channels a user can access or what other users the user can moderate. |
+| `bool` | Indicates whether the user the ability kick/ban/unban others. |
+| `bool` | Indicates whether the user can access the logs. This should always be `0`, unless the client has a dedicated log view that can be accessed without connecting to the chat server. |
+| `bool` | Indicates whether the user can set an alternate display name. |
+| `int`  | Indicates whether the user can create channel. If `0` the user cannot create channels, if `1` the user can create channels but they are to disappear when all users have left it and if `2` the user can create channels that permanently stay in the channel assortment. |
+
+
+
+## Client Packets
+These are the packets sent from the client to the server.
+
+### Packet `0`: Ping
+Used to prevent the client from closing the session due to inactivity.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | User ID of the current user. |
+
+
+### Packet `1`: Authentication
+Takes a variable number of parameters that are fed into the authentication script associated with the chat.
+
+| Type        | Description |
+|:-----------:| ----------- |
+| `...string` | Any amount of data required to complete authentication. |
+
+#### Original Sock Chat phpBB format
+Although the specification was never strict on the format, the original client and server combo included only a single authentication extension for phpBB.
+Flashii Hajime, Sakura and early Misuzu also used this same format.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | User ID of the authenticating user. |
+| `string` | Session token for the authenticating user. |
+
+#### Flashii Chat format
+In order to support multiple authentication methods more easily, Flashii Chat currently uses a format similar to the HTTP Authorization header, where the first field is the authentication method and the second field is the authentication token.
+Previously, this was achieved using prefixes to the session token part of phpBB format.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | Authentication method, for example `Bearer` for an OAuth2 bearer token, or `Misuzu` for using the `msz_auth` cookie value. |
+| `string` | Authentication token, for example the OAuth2 bearer token value, or the Misuzu authentication cookie. |
+
+
+### Packet `2`: Message
+Informs the server that the user has sent a message.
+
+Commands are described lower in the document.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | User ID of the current user. |
+| `string` | Message text, cannot contain a tab character `\t`. |
+
+
+## Server Packets
+These are the packets sent from the server to the client.
+
+### Packet `0`: Pong
+Response to client packet `0`: Ping.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | A string containing `pong`. Previously SharpChat sent the current Unix timestamp here, but has since been updated to conform to the Original Sock Chat server formatting. |
+
+
+### Packet `1`: Join/Auth
+While authenticated this packet indicates that a new user has joined the server/channel. Before authentication this packet serves as a response to client packet `1`: Authentication.
+
+#### Successful authentication response
+Informs the client that authentication has succeeded.
+
+| Type           | Description |
+|:--------------:| ----------- |
+| `string`       | `y` to indicate a successful authentication attempt. |
+| `string`       | User ID of the authenticated user. |
+| `user name`    | User name of the authenticated user. |
+| `colour`       | User colour of the authenticated user. |
+| `user perms`   | Permissions for the authenticated user. |
+| `channel name` | Default channel the user will join following this packet. |
+| `int`          | Maximum length for messages sent by the client. NOTE: While the original PHP server did not send this data, the bundled client did look for it. |
+
+#### Failed authentication response
+Informs the client that authentication has failed.
+
+| Type        | Description |
+|:-----------:| ----------- |
+| `string`    | `n` to indicate a failed authentication attempt. |
+| `string`    | A reason string indicating the reason why the authentication attempt failed, options are listed below. |
+| `timestamp` | If included, indicates a ban expiration timestamp. Usually paired with the `joinfail` reason string. |
+
+##### Reason strings
+| Reason     | Explanation |
+| ---------- | ----------- |
+| `authfail` | Provided authentication data cannot be verified with an existing user or session. |
+| `joinfail` | Authentication data was correct, but the user is banned. The third field will contain an expiration timestamp. |
+| `sockfail` | Current socket connection is already authenticated. PHP Chat did not allow the same user account to be in chat more than once. SharpChat allows simultaneous connections, so this is used to put a cap on the maximum amount of connections a single user may have. As of writing this, the maximum number is `5`, however this may change in the future. |
+| `userfail` | A user with the same user name is already in chat. PHP Chat did not allow the same user account to be in chat more than once. SharpChat allows simultaneous connections, so this is used as a generic fallback reason in that implementation. If it occurs, a critical error happened on the backend. |
+
+#### User joining
+Informs the client that a user has joined.
+
+| Type         | Description |
+|:------------:| ----------- |
+| `timestamp`  | Timestamp at which the user joined. |
+| `string`     | User ID of the joining user. |
+| `user name`  | User name of the joining user. |
+| `colour`     | User colour for the joining user. |
+| `user perms` | Permissions for the joining user. |
+| `string`     | Message ID associated with this event. |
+
+
+### Packet `2`: Chat message
+Informs the client that a chat message has been received.
+
+| Type            | Description |
+|:---------------:| ----------- |
+| `timestamp`     | Timestamp at which the message was received by the server. |
+| `string`        | User ID of the author. If `-1` the message body will contain a formatted informational message documented below. |
+| `string`        | Message body. If this isn't an informational message, it is sanitised by the server: `<`, `>` and `\n` are replaced by `&lt;`, `&gt;` and ` <br/> `. SharpChat also replaces `\t` with four sequential space characters. |
+| `string`        | Message ID. |
+| `message flags` | Message flags. |
+
+#### Informational message formatting
+If this is an informational message this field is formatted as follows and concatenated by the form feed character `\f`, respresented in ASCII by `0x0C`.
+Bot message formats are described lower in the document.
+
+| Type        | Description |
+|:-----------:| ----------- |
+| `bool`      | If `1`, this message should be displayed as an error message. If `0`, it should be displayed as a normal informational message. |
+| `string`    | Informational message format name. List of formats is described below. |
+| `...string` | Any number of parameters required by the format string. |
+
+
+### Packet `3`: User disconnect
+Informs the client that a user has disconnected.
+
+| Type        | Description |
+|:-----------:| ----------- |
+| `string`    | User ID of the disconnecting user. |
+| `user name` | User name of the disconnecting user. |
+| `string`    | Reason for disconnecting, described below. |
+| `timestamp` | Timestamp when the user disconnected. |
+| `string`    | Message ID associated with this event. |
+
+#### Disconnect reasons
+| Reason    | Explanation |
+| --------- | ----------- |
+| `leave`   | User gracefully left, e.g. "xyz logged out". |
+| `kick`    | User got banned, kicked or otherwise unvoluntarily had their session terminated, e.g. "xyz has been kicked". |
+| `flood`   | User got kicked for exceeding the flood protection limit, e.g. "xyz has been kicked for spam". |
+| `timeout` | User lost connection unexpectedly after not sending pings in a timely fashion, e.g. "xyz timed out". The original PHP Sock Chat implementation did not support this and was added later by SharpChat. Support could be added by modifying the language file, so we're letting this slide. |
+
+
+### Packet `4`: Channel event
+This packet informs the user about channel related updates.
+The only consistent parameter across sub-packets is the first one described as follows.
+
+| Type  | Description    |
+|:-----:| -------------- |
+| `int` | Sub-packet ID. |
+
+#### Sub-packet `0`: Channel creation
+Informs the client that a channel has been created.
+
+| Type           | Description |
+|:--------------:| ----------- |
+| `channel name` | Name of the new channel. |
+| `bool`         | Indicates whether the channel is password protected (non-`0`) or not (`0`). |
+| `bool`         | Indicates whether the channel is temporary (non-`0`) or not (`0`). In the original PHP Chat implementation this would mean a channel gets deleted after the last person departs from it. |
+
+#### Sub-packet `1`: Channel update
+Informs the client that details of a channel has changed.
+
+| Type           | Description |
+|:--------------:| ----------- |
+| `channel name` | Previous name of the channel. |
+| `channel name` | New name of the channel. |
+| `bool`         | Indicates whether the channel is password protected (non-`0`) or not (`0`). |
+| `bool`         | Indicates whether the channel is temporary (non-`0`) or not (`0`). In the original PHP Chat implementation this would mean a channel gets deleted after the last person departs from it. |
+
+#### Sub-packet `2`: Channel deletion
+Informs the client that a channel has been deleted
+
+| Type           | Description |
+|:--------------:| ----------- |
+| `channel name` | Name of the channel to be deleted. |
+
+
+### Packet `5`: Channel switching
+This packet informs the client about channel switching.
+
+| Type  | Description    |
+|:-----:| -------------- |
+| `int` | Sub-packet ID. |
+
+#### Sub-packet `0`: Channel join
+Informs the client that a user has joined the channel.
+
+| Type         | Description |
+|:------------:| ----------- |
+| `string`     | User ID of the user joining the channel. |
+| `user name`  | User name of the user joining the channel. |
+| `colour`     | User colour of the user joining the channel. |
+| `user perms` | Permissions of the user joining the channel. |
+| `string`     | Message ID associated with this event. |
+
+#### Sub-packet `1`: Channel departure
+Informs the client that a user has left the channel.
+
+| Type         | Description |
+|:------------:| ----------- |
+| `string`     | User ID of the user leaving the channel. |
+| `string`     | Message ID associated with this event. |
+
+#### Sub-packet `2`: Forced channel switch
+Informs the client that it has been forcibly switched to a different channel.
+
+| Type           | Description |
+|:--------------:| ----------- |
+| `channel name` | Name of the channel the current user is now present in. |
+
+
+### Packet `6`: Message deletion
+Informs the client that a message has been deleted.
+
+| Type     | Description |
+|:--------:| ----------- |
+| `string` | Message ID of the message to be deleted. |
+
+
+### Packet `7`: Context information
+Informs the client about the context of a channel before the client was present.
+
+| Type  | Description    |
+|:-----:| -------------- |
+| `int` | Sub-packet ID. |
+
+#### Sub-packet `0`: Existing users
+Informs the client about users already present in the channel.
+
+| Type  | Description |
+|:-----:| ----------- |
+| `int` | Amount of users present in the current channel. |
+|       | A repetition of a number of fields based on the number above, described below. |
+
+##### Context user information
+| Type         | Description |
+|:------------:| ----------- |
+| `string`     | User ID of this already present user. |
+| `user name`  | User name of this already present user. |
+| `colour`     | User colour of this already present user. |
+| `user perms` | Permissions of this already present user. |
+| `bool`       | If non-`0` this user should be displayed in a user list, if `0` this user should be treated as invisible. Used by bot mods in the original PHP implementation. |
+
+#### Sub-packet `1`: Existing message
+Informs the client about an existing message in a channel.
+
+| Type            | Description |
+|:---------------:| ----------- |
+| `timestamp`     | Timestamp at which the message was received by the server. |
+| `string`        | User ID of the author. If `-1` the message body will contain a formatted informational message documented below. |
+| `user name`     | User name of the author of this message. |
+| `colour`        | User colour of the author of this message. |
+| `user perms`    | Permissions of the author of this message. |
+| `string`        | Message body. If this isn't an informational message, it is sanitised by the server: `<`, `>` and `\n` are replaced by `&lt;`, `&gt;` and ` <br/> `. SharpChat also replaces `\t` with four sequential space characters. |
+| `string`        | Message ID. |
+| `bool`          | If non-`0` this message should trigger notifications (sounds, banners, etc) on the client. |
+| `message flags` | Message flags. |
+
+#### Sub-packet `2`: Channels
+Informs the client about the channels on the server.
+
+| Type  | Description |
+|:-----:| ----------- |
+| `int` | Amount of channels on the server. |
+|       | A repetition of a number of fields based on the number above, described below. |
+
+##### Context channel information
+| Type           | Description |
+|:--------------:| ----------- |
+| `channel name` | Name of the new channel. |
+| `bool`         | Indicates whether the channel is password protected (non-`0`) or not (`0`). |
+| `bool`         | Indicates whether the channel is temporary (non-`0`) or not (`0`). In the original PHP Chat implementation this would mean a channel gets deleted after the last person departs from it. |
+
+### Packet `8`: Context clearing
+Informs the client that the context has been cleared.
+This packet can be safely ignored, its behaviour can be implicitly handled when required according to the table below.
+
+| Type  | Description |
+|:-----:| ----------- |
+| `int` | Number indicating what data should be cleared. Modes are described below. |
+
+#### Context clear modes
+| Mode | Explanation |
+|:----:| ----------- |
+| `0`  | Only the message history should be cleared. Does not normally occur. |
+| `1`  | Only the user list should be cleared. Does not normally occur. |
+| `2`  | Only the channel list should be cleared. Does not normally occur. |
+| `3`  | Clear the message history and user list. Occurs upon switching (or being switched) to another channel. |
+| `4`  | Clear the message history, user list and channel list. Does not normally occur. |
+
+
+### Packet `9`: Forced disconnect
+Informs the client that they have either been banned or kicked from the server.
+
+| Type        | Description |
+|:-----------:| ----------- |
+| `bool`      | If non-`0`, the next field will be defined and contain an expiration time. If `0`, the user can rejoin immediately. |
+| `timestamp` | Ban expiration timestamp, present when the first field is non-`0`. |
+
+
+### Packet `10`: User update
+Informs that another user's details have been updated.
+
+| Type         | Description |
+|:------------:| ----------- |
+| `string`     | User ID of the updated user. |
+| `user name`  | New user name of the updated user. |
+| `colour`     | New user colour for the updated user. |
+| `user perms` | New permissions for the updated user. |
+
+
+## Bot Messages
+Formatting IDs sent by user -1.
+
+### Informational
+
+#### `say`: Broadcast
+Just echo whatever is specified in the first argument.
+
+##### Arguments
+ - `string`: Message to be broadcast.
+
+
+#### `flwarn`: Flood protection warning
+Informs the client that they are risking getting kicked for flood protection (spam) if they continue sending messages at the same rate.
+
+
+#### `unban`: Ban revocation confirmation
+Informs the client that they have successfully revoked a ban on a user or an IP address.
+
+
+#### `banlist`: List of banned entities
+Provides the client with a list of all banned users and IP addresses.
+
+##### Arguments
+ - `string`: HTML with the information on the users with the following format: "<code>&lt;a href="javascript:void(0);" onclick="Chat.SendMessageWrapper('/unban '+ this.innerHTML);"&gt;{0}&lt;/a&gt;</code>" where {0} is the username of the banned user or the banned IP address. The set is separated by "<code>, </code>".
+
+
+#### `who`: List of online users
+Provides the client with a list of users currently online on the server.
+
+##### Arguments
+ - `string`: HTML with the information on the users with the following format: "<code>&lt;a href="javascript:void(0);" onclick="UI.InsertChatText(this.innerHTML);"&gt;{0}&lt;/a&gt;</code>" where {0} is the username of a user. The current online user is highlighted with "<code> style="font-weight: bold;"</code>" before the closing &gt; of the opening &lt;a&gt; tag. The set is separated by "<code>, </code>".
+
+
+#### `whochan`: List of users in a channel.
+Provides the client with a list of users currently online in a channel.
+
+##### Arguments
+ - `string`: HTML with the information on the users with the following format: "<code>&lt;a href="javascript:void(0);" onclick="UI.InsertChatText(this.innerHTML);"&gt;{0}&lt;/a&gt;</code>" where {0} is the username of a user. The current online user is highlighted with "<code> style="font-weight: bold;"</code>" before the closing &gt; of the opening &lt;a&gt; tag. The set is separated by "<code>, </code>"
+
+
+#### `join`: User connected
+Informs the client that a user just connected to the server.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `jchan`: User joined channel
+Informs the client that a user just joined a channel they're in.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `leave`: User disconnected
+Informs the client that a user just disconnected from the server.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `lchan`: User left channel
+Informs the client that a user just left a channel they're in.
+
+
+#### `kick`: User has been kicked
+Informs the client that another user has just been kicked.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `flood`: User exceeded flood limit
+Informs the client that another user has just been kicked for exceeding the flood protection limit.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `timeout`: User has timed out
+Informs the client that another user has been disconnected from the server automatically.
+
+##### Arguments
+ - `string`: Username of the user.
+
+
+#### `nick`: User has changed their nickname
+Informs the client that a user has changed their nickname.
+
+##### Arguments
+ - `string`: Previous username of the user.
+ - `string`: New username of the user.
+
+
+#### `crchan`: Channel creation confirmation
+Informs the client that the channel they attempted to create has been successfully created.
+
+##### Arguments
+ - `string`: Name of the target channel.
+
+
+#### `delchan`: Channel deletion confirmation
+Informs the client that the channel they attempted to delete has been successfully deleted.
+
+##### Arguments
+ - `string`: Name of the target channel.
+
+
+#### `cpwdchan`: Channel password update confirmation
+Informs the client that they've successfully changed the password of a channel.
+
+
+#### `cprivchan`: Channel rank update confirmation
+Informs the client that they've successfully changed the minimum required rank to join a channel.
+
+
+#### `ipaddr`: IP address
+Shows the IP address of another user to a user with moderation privileges.
+
+##### Arguments
+ - `string`: Name of the target user.
+ - `string`: IP address.
+
+
+### Errors
+
+#### `generr`: Generic Error
+Informs the client that Something went Wrong.
+
+
+#### `nocmd`: Command not found
+Informs the client that the command they tried to run does not exist.
+
+##### Arguments
+ - `string`: Name of the command.
+
+
+#### `cmdna`: Command not allowed
+Informs the client that they are not allowed to use a command.
+
+##### Arguments
+ - `string`: Name of the command.
+
+
+#### `cmderr`: Command format error
+Informs the client that the command they tried to run was incorrectly formatted.
+
+##### Arguments
+ - `string`: Name of the command.
+
+
+#### `usernf`: User not found
+Informs the client that the user argument of a command contains a user that is not known by the server.
+
+##### Arguments
+ - `string`: Name of the target user.
+
+
+#### `rankerr`: Rank error
+Informs the client that they are not allowed to do something because their ranking is too low.
+
+
+#### `nameinuse`: Name in use
+Informs the the client that the name they attempted to choose is already in use by another user.
+
+##### Arguments
+ - `string`: Name that is in use.
+
+
+#### `whoerr`: User listing error
+Informs the client that they do not have access to the channel they tried to query.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `kickna`: Kick or ban not allowed
+Informs the client that they are not allowed to kick a user.
+
+##### Arguments
+ - `string`: Username of the user in question.
+
+
+#### `notban`: Not banned
+Informs the client that the ban they tried to revoke was not in place.
+
+##### Arguments
+ - `string`: Username or IP address in question.
+
+
+#### `nochan`: Channel not found
+Informs the client that the channel they tried to join does not exist.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `samechan`: Already in channel
+Informs the client that they attempted to join a channel they are already in.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `ipchan`: Channel join not allowed
+Informs the client that they do not have sufficient rank or permissions to join a channel.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `nopwchan`: No password provided
+Informs the client that they must specify a password to join a channel.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `ipwchan`: No password provided
+Informs the client that the password they provided to join a channel was invalid.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `inchan`: Invalid channel name
+Informs the client that the name they tried to give to a channel contains invalid characters.
+
+
+#### `nischan`: Channel name in use
+Informs the client that the name they tried to give to a channel is already used by another channel.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `ndchan`: Channel deletion error
+Informs the client that they are not allowed to delete a channel.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `namchan`: Channel edit error
+Informs the client that they are not allowed to edit a channel.
+
+##### Arguments
+ - `string`: Name of the channel.
+
+
+#### `delerr`: Message deletion error
+Informs the client that they are not allowed to delete a message.
+
+
+## Commands
+Actions sent through messages prefixed with `/`. Arguments are described as `[name]`, optional arguments as `[name?]`. The `.` character is ignored in command names (replaced by nothing).
+
+### `/afk`: Setting status to away
+Marks the current user as afk, the first 5 characters from the user string are prefixed uppercase to the current username prefixed by `&amp;lt;` and suffixed by `&amp;gt;_` resulting in a username that looks like `&lt;AWAY&gt;_flash` if `/afk away` is ran by the user `flash`. If no reason is specified "`AFK`" is used.
+
+#### Format
+```
+/afk [reason?]
+```
+
+
+### `/nick`: Change nickname
+Temporarily changes the user's nickname, generally with a prefix such as `~` to avoid name clashing with real users. If the user's original name or no argument at all is specified, the command returns the user's name to its original state without the prefix.
+
+#### Format
+```
+/nick [name?]
+```
+
+#### Responses
+ - `cmdna`: User is not allowed to change their own nickname.
+ - `nameinuse`: The specified nickname is already in use by another user.
+ - `nick`: Username has changed.
+
+
+### `/msg`: Sending a Private Message
+Sends a private message to another user.
+
+#### Format
+```
+/msg [username] [message]
+```
+
+#### Aliases
+ - `/whisper`
+
+#### Responses
+ - `cmderr`: Missing username and/or message arguments.
+ - `usernf`: Target user could not be found by the server.
+
+
+### `/me`: Describing an action
+Sends a message but with flags `11000` instead of the regular `10010`, used to describe an action.
+
+#### Format
+```
+/me [message]
+```
+
+#### Aliases
+ - `/action`
+
+
+### `/who`: Requesting a user list
+Requests a list of users either currently online on the server in general or in a channel. If no argument is specified it'll return all users on the server, if a channel is specified it'll return all users in that channel.
+
+#### Format
+```
+/who [channel?]
+```
+
+#### Responses
+ - `nochan`: The given channel does not exist.
+ - `whoerr`: The user does not have access to the channel.
+ - `whochan`: Listing of users in the channel.
+ - `who`: Listing of users in the server.
+
+
+### `/delete`: Deleting a message or channel
+Due to an oversight in the original implementation, this command was specified to be both the command for deleting messages and for channels. Fortunately messages always have numeric IDs and channels must start with an alphabetic character. Thus if the argument is entirely numeric this function acts as an alias for `/delmsg`, otherwise `/delchan`.
+
+#### Format
+```
+/delete [channel name or message id]
+```
+
+#### Responses
+Inherits the responses of whichever command is forwarded to.
+
+
+### `/join`: Joining a channel
+Switches or joins the current user to a different channel.
+
+#### Format
+```
+/join [channel] [password?]
+```
+
+#### Responses
+ - `nochan`: The given channel does not exist.
+ - `ipchan`: The client does not have the required rank to enter the given channel.
+ - `nopwchan`: A password is required to enter the given channel.
+ - `ipwchan`: The password provided was invalid.
+
+
+### `/leave`: Leaving a channel
+Leave a specified channel.
+
+#### Format
+```
+/leave [channel]
+```
+
+#### Responses
+ - `nocmd`: The client tried to run this command without specifying the `MCHAN` capability.
+
+
+### `/create`: Creating a channel
+Creates a new channel.
+
+#### Format
+```
+/create [rank?] [name...]
+```
+
+If the first argument is numeric, it is taken as the minimum required rank to join the channel. All further arguments are glued with underscores to create the channel name.
+
+#### Responses
+ - `cmdna`: The client is not allowed to create channels.
+ - `cmderr`: The command is formatted incorrectly.
+ - `rankerr`: The specified rank is higher than the client's own rank.
+ - `inchan`: The given channel name contains invalid characters.
+ - `nischan`: A channel with this name already exists.
+ - `crchan`: The channel has been created successfully.
+
+
+### `/delchan`: Deleting a channel
+Deletes an existing channel.
+
+#### Format
+```
+/delchan [name]
+```
+
+#### Responses
+ - `cmderr`: The command is formatted incorrectly.
+ - `nochan`: No channel exists with this name.
+ - `ndchan`: The client is not allowed to delete this channel.
+ - `delchan`: The target channel has been deleted.
+
+
+### `/password`: Update channel password
+Changes the password for a channel. Removes the password if no argument is given.
+
+#### Format
+```
+/password [password?]
+```
+
+#### Aliases
+ - `/pwd`
+
+#### Responses
+ - `cmdna`: The client is not allowed to change the password for this channel.
+ - `cpwdchan`: The password of the channel has been successfully updated.
+
+
+### `/rank`: Update channel minimum rank
+Changes what user rank is required to enter a channel.
+
+#### Format
+```
+/rank [rank]
+```
+
+#### Aliases
+ - `/privilege`
+ - `/priv`
+
+#### Responses
+ - `cmdna`: The client is not allowed to change the rank of the target channel.
+ - `rankerr`: Missing rank argument or the given rank is higher than the client's own rank.
+ - `cprivchan`: The minimum rank of the channel has been successfully updated.
+
+
+### `/say`: Broadcast a message
+Broadcasts a message as the server/chatbot to all users in all channels.
+
+#### Format
+```
+/say [message]
+```
+
+#### Responses
+ - `cmdna`: The client is not allowed to broadcast messages.
+ - `say`: The broadcasted message.
+
+
+### `/delmsg`: Deleting a message
+Deletes a given message.
+
+#### Format
+```
+/delmsg [message id]
+```
+
+#### Responses
+ - `cmdna`: The client is not allowed to delete messages.
+ - `cmderr`: The given message ID was invalid.
+ - `delerr`: The target message does not exist or the client is not allowed to delete this message.
+
+
+### `/kick`: Kick a user
+Kicks a user from the serer. If not time is specified, then kick expires immediately.
+
+#### Format
+```
+/kick [username] [time?]
+```
+
+#### Responses
+ - `cmdna`: The client is not allowed to kick others.
+ - `usernf`: The target user could not be found on the server.
+ - `kickna`: The client is trying to kick someone who they are not allowed to kick, or someone that is currently banned.
+ - `cmderr`: The provided time is invalid.
+
+
+### `/ban`: Bans a user
+Bans a user and their IP addresses from the server. If no time is specified the ban will never expire.
+
+#### Format
+```
+/ban [user] [time?]
+```
+
+#### Responses
+ - `cmdna`: The client is not allowed to kick others.
+ - `usernf`: The target user could not be found on the server.
+ - `kickna`: The client is trying to kick someone who they are not allowed to kick, or someone that is currently banned.
+ - `cmderr`: The provided time is invalid.
+
+
+### `/pardon`: Revokes a user ban
+Revokes a ban currently placed on a user.
+
+#### Format
+```
+/pardon [user]
+```
+
+### Aliases
+ - `/unban`
+
+#### Responses
+ - `cmdna`: The client is not allowed to revoke user bans.
+ - `notban`: The target user is not banned.
+ - `unban`: The ban on the target user has been successfully revoked.
+
+
+### `/pardonip`: Revokes an IP address ban
+Revokes a ban currently placed on an IP address.
+
+#### Format
+```
+/pardonip [address]
+```
+
+#### Aliases
+ - `/unbanip`
+
+#### Responses
+ - `cmdna`: The client is not allowed to revoke IP bans.
+ - `notban`: The target address is not banned.
+ - `unban`: The ban on the target address has been successfully revoked.
+
+
+### `/bans`: List of bans
+Retrieves a list of banned users and IP addresses.
+
+#### Format
+```
+/bans
+```
+
+#### Aliases
+ - `/banned`
+
+#### Responses
+ - `cmdna`: Not allowed to view banned users and IP addresses.
+ - `banlist`: The list of banned users and IP addresses.
+
+
+### `/ip`: Retrieve IP addresses
+Retrieves a user's IP addresses. If the user has multiple connections, multiple `ipaddr` responses may be sent.
+
+#### Format
+```
+/ip [username]
+```
+
+#### Aliases
+ - `whois`
+
+#### Responses
+ - `cmdna`: The client is not allowed to view IP addresses.
+ - `usernf`: The target user is not connected to the server.
+ - `ipaddr`: (One of) The target user's IP address(es).

SharpChat.sln

@@ -5,6 +5,17 @@ VisualStudioVersion = 17.2.32630.192
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SharpChat", "SharpChat\SharpChat.csproj", "{DDB24C19-B802-4C96-AC15-0449C6FC77F2}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{DF7A7073-A67A-4D93-92C6-F9D0F95E2359}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+		.gitattributes = .gitattributes
+		.gitignore = .gitignore
+		LICENSE = LICENSE
+		Protocol.md = Protocol.md
+		README.md = README.md
+		start.sh = start.sh
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU

SharpChat/BanManager.cs

@@ -1,189 +0,0 @@
-using SharpChat.Flashii;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Net;
-
-namespace SharpChat {
-    public interface IBan {
-        DateTimeOffset Expires { get; }
-        string ToString();
-    }
-
-    public class BannedUser : IBan {
-        public long UserId { get; set; }
-        public DateTimeOffset Expires { get; set; }
-        public string Username { get; set; }
-
-        public BannedUser() {
-        }
-
-        public BannedUser(FlashiiBan fb) {
-            UserId = fb.UserId;
-            Expires = fb.Expires;
-            Username = fb.Username;
-        }
-
-        public override string ToString() => Username;
-    }
-
-    public class BannedIPAddress : IBan {
-        public IPAddress Address { get; set; }
-        public DateTimeOffset Expires { get; set; }
-
-        public BannedIPAddress() {
-        }
-
-        public BannedIPAddress(FlashiiBan fb) {
-            Address = IPAddress.Parse(fb.UserIP);
-            Expires = fb.Expires;
-        }
-
-        public override string ToString() => Address.ToString();
-    }
-
-    public class BanManager : IDisposable {
-        private readonly List<IBan> BanList = new List<IBan>();
-
-        public readonly ChatContext Context;
-
-        public bool IsDisposed { get; private set; }
-
-        public BanManager(ChatContext context) {
-            Context = context;
-            RefreshFlashiiBans();
-        }
-
-        public void Add(ChatUser user, DateTimeOffset expires) {
-            if (expires <= DateTimeOffset.Now)
-                return;
-
-            lock (BanList) {
-                BannedUser ban = BanList.OfType<BannedUser>().FirstOrDefault(x => x.UserId == user.UserId);
-
-                if (ban == null)
-                    Add(new BannedUser { UserId = user.UserId, Expires = expires, Username = user.Username });
-                else
-                    ban.Expires = expires;
-            }
-        }
-
-        public void Add(IPAddress addr, DateTimeOffset expires) {
-            if (expires <= DateTimeOffset.Now)
-                return;
-
-            lock (BanList) {
-                BannedIPAddress ban = BanList.OfType<BannedIPAddress>().FirstOrDefault(x => x.Address.Equals(addr));
-
-                if (ban == null)
-                    Add(new BannedIPAddress { Address = addr, Expires = expires });
-                else
-                    ban.Expires = expires;
-            }
-        }
-
-        private void Add(IBan ban) {
-            if (ban == null)
-                return;
-
-            lock (BanList)
-                if (!BanList.Contains(ban))
-                    BanList.Add(ban);
-        }
-
-        public void Remove(ChatUser user) {
-            lock(BanList)
-                BanList.RemoveAll(x => x is BannedUser ub && ub.UserId == user.UserId);
-        }
-
-        public void Remove(IPAddress addr) {
-            lock(BanList)
-                BanList.RemoveAll(x => x is BannedIPAddress ib && ib.Address.Equals(addr));
-        }
-
-        public void Remove(IBan ban) {
-            lock (BanList)
-                BanList.Remove(ban);
-        }
-
-        public DateTimeOffset Check(ChatUser user) {
-            if (user == null)
-                return DateTimeOffset.MinValue;
-
-            lock(BanList)
-                return BanList.OfType<BannedUser>().Where(x => x.UserId == user.UserId).FirstOrDefault()?.Expires ?? DateTimeOffset.MinValue;
-        }
-
-        public DateTimeOffset Check(IPAddress addr) {
-            if (addr == null)
-                return DateTimeOffset.MinValue;
-
-            lock (BanList)
-                return BanList.OfType<BannedIPAddress>().Where(x => x.Address.Equals(addr)).FirstOrDefault()?.Expires ?? DateTimeOffset.MinValue;
-        }
-
-        public BannedUser GetUser(string username) {
-            if (username == null)
-                return null;
-
-            if (!long.TryParse(username, out long userId))
-                userId = 0;
-
-            lock (BanList)
-                return BanList.OfType<BannedUser>().FirstOrDefault(x => x.Username.ToLowerInvariant() == username.ToLowerInvariant() || (userId > 0 && x.UserId == userId));
-        }
-
-        public BannedIPAddress GetIPAddress(IPAddress addr) {
-            lock (BanList)
-                return BanList.OfType<BannedIPAddress>().FirstOrDefault(x => x.Address.Equals(addr));
-        }
-
-        public void RemoveExpired() {
-            lock(BanList)
-                BanList.RemoveAll(x => x.Expires <= DateTimeOffset.Now);
-        }
-
-        public void RefreshFlashiiBans() {
-            FlashiiBan.GetList(SockChatServer.HttpClient).ContinueWith(x => {
-                if(x.IsFaulted) {
-                    Logger.Write($@"Ban Refresh: {x.Exception}");
-                    return;
-                }
-
-                if(!x.Result.Any())
-                    return;
-
-                lock(BanList) {
-                    foreach(FlashiiBan fb in x.Result) {
-                        if(!BanList.OfType<BannedUser>().Any(x => x.UserId == fb.UserId))
-                            Add(new BannedUser(fb));
-                        if(!BanList.OfType<BannedIPAddress>().Any(x => x.Address.ToString() == fb.UserIP))
-                            Add(new BannedIPAddress(fb));
-                    }
-                }
-            });
-        }
-
-        public IEnumerable<IBan> All() {
-            lock (BanList)
-                return BanList.ToList();
-        }
-
-        ~BanManager()
-            => Dispose(false);
-
-        public void Dispose()
-            => Dispose(true);
-
-        private void Dispose(bool disposing) {
-            if (IsDisposed)
-                return;
-            IsDisposed = true;
-
-            BanList.Clear();
-
-            if (disposing)
-                GC.SuppressFinalize(this);
-        }
-    }
-}

SharpChat/ChannelManager.cs

@@ -1,160 +0,0 @@
-using SharpChat.Packet;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace SharpChat {
-    public class ChannelException : Exception { }
-    public class ChannelExistException : ChannelException { }
-    public class ChannelInvalidNameException : ChannelException { }
-
-    public class ChannelManager : IDisposable {
-        private readonly List<ChatChannel> Channels = new List<ChatChannel>();
-
-        public readonly ChatContext Context;
-
-        public bool IsDisposed { get; private set; }
-
-        public ChannelManager(ChatContext context) {
-            Context = context;
-        }
-
-        private ChatChannel _DefaultChannel;
-
-        public ChatChannel DefaultChannel {
-            get {
-                if (_DefaultChannel == null)
-                    _DefaultChannel = Channels.FirstOrDefault();
-
-                return _DefaultChannel;
-            }
-            set {
-                if (value == null)
-                    return;
-
-                if (Channels.Contains(value))
-                    _DefaultChannel = value;
-            }
-        }
-
-
-        public void Add(ChatChannel channel) {
-            if (channel == null)
-                throw new ArgumentNullException(nameof(channel));
-            if (!channel.Name.All(c => char.IsLetter(c) || char.IsNumber(c) || c == '-'))
-                throw new ChannelInvalidNameException();
-            if (Get(channel.Name) != null)
-                throw new ChannelExistException();
-
-            // Add channel to the listing
-            Channels.Add(channel);
-
-            // Set as default if there's none yet
-            if (_DefaultChannel == null)
-                _DefaultChannel = channel;
-
-            // Broadcast creation of channel
-            foreach (ChatUser user in Context.Users.OfHierarchy(channel.Rank))
-                user.Send(new ChannelCreatePacket(channel));
-        }
-
-        public void Remove(ChatChannel channel) {
-            if (channel == null || channel == DefaultChannel)
-                return;
-
-            // Remove channel from the listing
-            Channels.Remove(channel);
-
-            // Move all users back to the main channel
-            // TODO: Replace this with a kick. SCv2 supports being in 0 channels, SCv1 should force the user back to DefaultChannel.
-            foreach (ChatUser user in channel.GetUsers()) {
-                Context.SwitchChannel(user, DefaultChannel, string.Empty);
-            }
-
-            // Broadcast deletion of channel
-            foreach (ChatUser user in Context.Users.OfHierarchy(channel.Rank))
-                user.Send(new ChannelDeletePacket(channel));
-        }
-
-        public bool Contains(ChatChannel chan) {
-            if (chan == null)
-                return false;
-
-            lock (Channels)
-                return Channels.Contains(chan) || Channels.Any(c => c.Name.ToLowerInvariant() == chan.Name.ToLowerInvariant());
-        }
-
-        public void Update(ChatChannel channel, string name = null, bool? temporary = null, int? hierarchy = null, string password = null) {
-            if (channel == null)
-                throw new ArgumentNullException(nameof(channel));
-            if (!Channels.Contains(channel))
-                throw new ArgumentException(@"Provided channel is not registered with this manager.", nameof(channel));
-
-            string prevName = channel.Name;
-            int prevHierarchy = channel.Rank;
-            bool nameUpdated = !string.IsNullOrWhiteSpace(name) && name != prevName;
-
-            if (nameUpdated) {
-                if (!name.All(c => char.IsLetter(c) || char.IsNumber(c) || c == '-'))
-                    throw new ChannelInvalidNameException();
-                if (Get(name) != null)
-                    throw new ChannelExistException();
-
-                channel.Name = name;
-            }
-
-            if (temporary.HasValue)
-                channel.IsTemporary = temporary.Value;
-
-            if (hierarchy.HasValue)
-                channel.Rank = hierarchy.Value;
-
-            if (password != null)
-                channel.Password = password;
-
-            // Users that no longer have access to the channel/gained access to the channel by the hierarchy change should receive delete and create packets respectively
-            foreach (ChatUser user in Context.Users.OfHierarchy(channel.Rank)) {
-                user.Send(new ChannelUpdatePacket(prevName, channel));
-
-                if (nameUpdated)
-                    user.ForceChannel();
-            }
-        }
-
-        public ChatChannel Get(string name) {
-            if (string.IsNullOrWhiteSpace(name))
-                return null;
-
-            return Channels.FirstOrDefault(x => x.Name.ToLowerInvariant() == name.ToLowerInvariant());
-        }
-
-        public IEnumerable<ChatChannel> GetUser(ChatUser user) {
-            if (user == null)
-                return null;
-
-            return Channels.Where(x => x.HasUser(user));
-        }
-
-        public IEnumerable<ChatChannel> OfHierarchy(int hierarchy) {
-            lock (Channels)
-                return Channels.Where(c => c.Rank <= hierarchy).ToList();
-        }
-
-        ~ChannelManager()
-            => Dispose(false);
-
-        public void Dispose()
-            => Dispose(true);
-
-        private void Dispose(bool disposing) {
-            if (IsDisposed)
-                return;
-            IsDisposed = true;
-
-            Channels.Clear();
-
-            if (disposing)
-                GC.SuppressFinalize(this);
-        }
-    }
-}

SharpChat/ChatChannel.cs

@@ -1,106 +1,59 @@
-using System.Collections.Generic;
+using System;
 using System.Linq;
-using System.Text;
 
 namespace SharpChat {
-    public class ChatChannel : IPacketTarget {
-        public string Name { get; set; }
-        public string Password { get; set; } = string.Empty;
-        public bool IsTemporary { get; set; } = false;
-        public int Rank { get; set; } = 0;
-        public ChatUser Owner { get; set; } = null;
-
-        private List<ChatUser> Users { get; } = new List<ChatUser>();
-        private List<ChatChannelTyping> Typing { get; } = new List<ChatChannelTyping>();
+    public class ChatChannel {
+        public string Name { get; }
+        public string Password { get; set; }
+        public bool IsTemporary { get; set; }
+        public int Rank { get; set; }
+        public long OwnerId { get; set; }
 
         public bool HasPassword
             => !string.IsNullOrWhiteSpace(Password);
 
-        public string TargetName => Name;
+        public ChatChannel(
+            ChatUser owner,
+            string name,
+            string? password = null,
+            bool isTemporary = false,
+            int rank = 0
+        ) : this(name, password, isTemporary, rank, owner?.UserId ?? 0) {}
 
-        public ChatChannel() {
-        }
-
-        public ChatChannel(string name) {
+        public ChatChannel(
+            string name,
+            string? password = null,
+            bool isTemporary = false,
+            int rank = 0,
+            long ownerId = 0
+        ) {
             Name = name;
+            Password = password ?? string.Empty;
+            IsTemporary = isTemporary;
+            Rank = rank;
+            OwnerId = ownerId;
         }
 
-        public bool HasUser(ChatUser user) {
-            lock (Users)
-                return Users.Contains(user);
+        public bool NameEquals(string? name) {
+            return string.Equals(name, Name, StringComparison.InvariantCultureIgnoreCase);
         }
 
-        public void UserJoin(ChatUser user) {
-            if (!user.InChannel(this)) {
-                // Remove this, a different means for this should be established for V1 compat.
-                user.Channel?.UserLeave(user);
-                user.JoinChannel(this);
-            }
-
-            lock (Users) {
-                if (!HasUser(user))
-                    Users.Add(user);
-            }
+        public bool IsOwner(ChatUser user) {
+            return OwnerId > 0
+                && user != null
+                && OwnerId == user.UserId;
         }
 
-        public void UserLeave(ChatUser user) {
-            lock (Users)
-                Users.Remove(user);
-
-            if (user.InChannel(this))
-                user.LeaveChannel(this);
+        public override int GetHashCode() {
+            return Name.GetHashCode();
         }
 
-        public void Send(IServerPacket packet) {
-            lock (Users) {
-                foreach (ChatUser user in Users)
-                    user.Send(packet);
-            }
+        public static bool CheckName(string name) {
+            return !string.IsNullOrWhiteSpace(name) && name.All(CheckNameChar);
         }
 
-        public IEnumerable<ChatUser> GetUsers(IEnumerable<ChatUser> exclude = null) {
-            lock (Users) {
-                IEnumerable<ChatUser> users = Users.OrderByDescending(x => x.Rank);
-
-                if (exclude != null)
-                    users = users.Except(exclude);
-
-                return users.ToList();
-            }
-        }
-
-        public bool IsTyping(ChatUser user) {
-            if(user == null)
-                return false;
-            lock(Typing)
-                return Typing.Any(x => x.User == user && !x.HasExpired);
-        }
-        public bool CanType(ChatUser user) {
-            if(user == null || !HasUser(user))
-                return false;
-            return !IsTyping(user);
-        }
-        public ChatChannelTyping RegisterTyping(ChatUser user) {
-            if(user == null || !HasUser(user))
-                return null;
-            ChatChannelTyping typing = new ChatChannelTyping(user);
-            lock(Typing) {
-                Typing.RemoveAll(x => x.HasExpired);
-                Typing.Add(typing);
-            }
-            return typing;
-        }
-
-        public string Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append(Name);
-            sb.Append('\t');
-            sb.Append(string.IsNullOrEmpty(Password) ? '0' : '1');
-            sb.Append('\t');
-            sb.Append(IsTemporary ? '1' : '0');
-
-            return sb.ToString();
+        public static bool CheckNameChar(char c) {
+            return char.IsLetter(c) || char.IsNumber(c) || c == '-' || c == '_';
         }
     }
 }

SharpChat/ChatChannelTyping.cs

@@ -1,18 +0,0 @@
-using System;
-
-namespace SharpChat {
-    public class ChatChannelTyping {
-        public static TimeSpan Lifetime { get; } = TimeSpan.FromSeconds(5);
-
-        public ChatUser User { get; }
-        public DateTimeOffset Started { get; }
-
-        public bool HasExpired
-            => DateTimeOffset.Now - Started > Lifetime;
-
-        public ChatChannelTyping(ChatUser user) {
-            User = user ?? throw new ArgumentNullException(nameof(user));
-            Started = DateTimeOffset.Now;
-        }
-    }
-}

SharpChat/ChatColour.cs

@@ -1,55 +1,77 @@
 namespace SharpChat {
-    public class ChatColour {
-        public const int INHERIT = 0x40000000;
+    public readonly struct ChatColour {
+        public readonly byte Red;
+        public readonly byte Green;
+        public readonly byte Blue;
+        public readonly bool Inherits;
 
-        public int Raw { get; set; }
+        public static ChatColour None { get; } = new();
 
-        public ChatColour(bool inherit = true) {
-            Inherit = inherit;
+        public ChatColour() {
+            Red = 0;
+            Green = 0;
+            Blue = 0;
+            Inherits = true;
         }
 
-        public ChatColour(int colour) {
-            Raw = colour;
+        public ChatColour(byte red, byte green, byte blue) {
+            Red = red;
+            Green = green;
+            Blue = blue;
+            Inherits = false;
         }
 
-        public bool Inherit {
-            get => (Raw & INHERIT) > 0;
-            set {
-                if (value)
-                    Raw |= INHERIT;
-                else
-                    Raw &= ~INHERIT;
-            }
+        public override bool Equals(object? obj) {
+            return obj is ChatColour colour && Equals(colour);
+        }
+       
+        public bool Equals(ChatColour other) {
+            return Red == other.Red
+                && Green == other.Green
+                && Blue == other.Blue
+                && Inherits == other.Inherits;
         }
 
-        public int Red {
-            get => (Raw >> 16) & 0xFF;
-            set {
-                Raw &= ~0xFF0000;
-                Raw |= (value & 0xFF) << 16;
-            }
-        }
-
-        public int Green {
-            get => (Raw >> 8) & 0xFF;
-            set {
-                Raw &= ~0xFF00;
-                Raw |= (value & 0xFF) << 8;
-            }
-        }
-
-        public int Blue {
-            get => Raw & 0xFF;
-            set {
-                Raw &= ~0xFF;
-                Raw |= value & 0xFF;
-            }
+        public override int GetHashCode() {
+            return ToMisuzu();
         }
 
         public override string ToString() {
-            if (Inherit)
-                return @"inherit";
-            return string.Format(@"#{0:X6}", Raw);
+            return Inherits
+                ? "inherit"
+                : string.Format("#{0:x2}{1:x2}{2:x2}", Red, Green, Blue);
+        }
+
+        public int ToRawRGB() {
+            return (Red << 16) | (Green << 8) | Blue;
+        }
+
+        public static ChatColour FromRawRGB(int rgb) {
+            return new(
+                (byte)((rgb >> 16) & 0xFF),
+                (byte)((rgb >> 8) & 0xFF),
+                (byte)(rgb & 0xFF)
+            );
+        }
+
+        private const int MSZ_INHERIT = 0x40000000;
+
+        public int ToMisuzu() {
+            return Inherits ? MSZ_INHERIT : ToRawRGB();
+        }
+
+        public static ChatColour FromMisuzu(int raw) {
+            return (raw & MSZ_INHERIT) > 0
+                ? None
+                : FromRawRGB(raw);
+        }
+
+        public static bool operator ==(ChatColour left, ChatColour right) {
+            return left.Equals(right);
+        }
+
+        public static bool operator !=(ChatColour left, ChatColour right) {
+            return !(left == right);
         }
     }
 }

SharpChat/ChatCommandContext.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Linq;
+
+namespace SharpChat {
+    public class ChatCommandContext {
+        public string Name { get; }
+        public string[] Args { get; }
+        public ChatContext Chat { get; }
+        public ChatUser User { get; }
+        public ChatConnection Connection { get; }
+        public ChatChannel Channel { get; }
+
+        public ChatCommandContext(
+            string text,
+            ChatContext chat,
+            ChatUser user,
+            ChatConnection connection,
+            ChatChannel channel
+        ) {
+            if(text == null)
+                throw new ArgumentNullException(nameof(text));
+
+            Chat = chat ?? throw new ArgumentNullException(nameof(chat));
+            User = user ?? throw new ArgumentNullException(nameof(user));
+            Connection = connection ?? throw new ArgumentNullException(nameof(connection));
+            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
+
+            string[] parts = text[1..].Split(' ');
+            Name = parts.First().Replace(".", string.Empty);
+            Args = parts.Skip(1).ToArray();
+        }
+
+        public ChatCommandContext(
+            string name,
+            string[] args,
+            ChatContext chat,
+            ChatUser user,
+            ChatConnection connection,
+            ChatChannel channel
+        ) {
+            Name = name ?? throw new ArgumentNullException(nameof(name));
+            Args = args ?? throw new ArgumentNullException(nameof(args));
+            Chat = chat ?? throw new ArgumentNullException(nameof(chat));
+            User = user ?? throw new ArgumentNullException(nameof(user));
+            Connection = connection ?? throw new ArgumentNullException(nameof(connection));
+            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
+        }
+
+        public bool NameEquals(string name) {
+            return Name.Equals(name, StringComparison.InvariantCultureIgnoreCase);
+        }
+    }
+}

SharpChat/ChatConnection.cs

@@ -0,0 +1,92 @@
+using Fleck;
+using System;
+using System.Net;
+
+namespace SharpChat {
+    public class ChatConnection : IDisposable {
+        public const int ID_LENGTH = 20;
+
+#if DEBUG
+        public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(1);
+#else
+        public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(5);
+#endif
+
+        public IWebSocketConnection Socket { get; }
+
+        public string Id { get; }
+        public bool IsDisposed { get; private set; }
+        public DateTimeOffset LastPing { get; set; } = DateTimeOffset.Now;
+        public ChatUser? User { get; set; }
+
+        private int CloseCode { get; set; } = 1000;
+
+        public IPAddress RemoteAddress { get; }
+        public ushort RemotePort { get; }
+
+        public bool IsAlive => !IsDisposed && !HasTimedOut;
+
+        public bool IsAuthed => IsAlive && User is not null;
+
+        public ChatConnection(IWebSocketConnection sock) {
+            Socket = sock;
+            Id = RNG.SecureRandomString(ID_LENGTH);
+
+            if(!IPAddress.TryParse(sock.ConnectionInfo.ClientIpAddress, out IPAddress? addr))
+                throw new Exception("Unable to parse remote address?????");
+
+            if(IPAddress.IsLoopback(addr)
+                && sock.ConnectionInfo.Headers.ContainsKey("X-Real-IP")
+                && IPAddress.TryParse(sock.ConnectionInfo.Headers["X-Real-IP"], out IPAddress? realAddr))
+                addr = realAddr;
+
+            RemoteAddress = addr;
+            RemotePort = (ushort)sock.ConnectionInfo.ClientPort;
+        }
+
+        public void Send(IServerPacket packet) {
+            if(!Socket.IsAvailable)
+                return;
+
+            string data = packet.Pack();
+            if(!string.IsNullOrWhiteSpace(data))
+                Socket.Send(data);
+        }
+
+        public void BumpPing() {
+            LastPing = DateTimeOffset.Now;
+        }
+
+        public bool HasTimedOut
+            => DateTimeOffset.Now - LastPing > SessionTimeOut;
+
+        public void PrepareForRestart() {
+            CloseCode = 1012;
+        }
+
+        ~ChatConnection() {
+            DoDispose();
+        }
+
+        public void Dispose() {
+            DoDispose();
+            GC.SuppressFinalize(this);
+        }
+
+        private void DoDispose() {
+            if(IsDisposed)
+                return;
+
+            IsDisposed = true;
+            Socket.Close(CloseCode);
+        }
+
+        public override string ToString() {
+            return Id;
+        }
+
+        public override int GetHashCode() {
+            return Id.GetHashCode();
+        }
+    }
+}

SharpChat/ChatContext.cs

@@ -1,116 +1,310 @@
 using SharpChat.Events;
-using SharpChat.Flashii;
+using SharpChat.EventStorage;
 using SharpChat.Packet;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Threading;
 
 namespace SharpChat {
-    public class ChatContext : IDisposable, IPacketTarget {
-        public bool IsDisposed { get; private set; }
+    public class ChatContext {
+        public record ChannelUserAssoc(long UserId, string ChannelName);
 
-        public SockChatServer Server { get; }
-        public Timer BumpTimer { get; }
-        public BanManager Bans { get; }
-        public ChannelManager Channels { get; }
-        public UserManager Users { get; }
-        public ChatEventManager Events { get; }
+        public readonly SemaphoreSlim ContextAccess = new(1, 1);
 
-        public string TargetName => @"@broadcast";
+        public HashSet<ChatChannel> Channels { get; } = new();
+        public HashSet<ChatConnection> Connections { get; } = new();
+        public HashSet<ChatUser> Users { get; } = new();
+        public IEventStorage Events { get; }
+        public HashSet<ChannelUserAssoc> ChannelUsers { get; } = new();
+        public Dictionary<long, RateLimiter> UserRateLimiters { get; } = new();
+        public Dictionary<long, ChatChannel> UserLastChannel { get; } = new();
 
-        public ChatContext(SockChatServer server) {
-            Server = server;
-            Bans = new BanManager(this);
-            Users = new UserManager(this);
-            Channels = new ChannelManager(this);
-            Events = new ChatEventManager(this);
+        public ChatContext(IEventStorage evtStore) {
+            Events = evtStore ?? throw new ArgumentNullException(nameof(evtStore));
+        }
 
-            BumpTimer = new Timer(e => FlashiiBump.Submit(SockChatServer.HttpClient, Users.WithActiveConnections()), null, TimeSpan.Zero, TimeSpan.FromMinutes(1));
+        public void DispatchEvent(IChatEvent eventInfo) {
+            if(eventInfo is MessageCreateEvent mce) {
+                if(mce.IsBroadcast) {
+                    Send(new MessageBroadcastPacket(mce.MessageText));
+                } else if(mce.IsPrivate) {
+                    // The channel name returned by GetDMChannelName should not be exposed to the user, instead @<Target User> should be displayed
+                    // e.g. nook sees @Arysil and Arysil sees @nook
+
+                    // this entire routine is garbage, channels should probably in the db
+                    if(mce.ChannelName?.StartsWith("@") != true)
+                        return;
+
+                    IEnumerable<long> uids = mce.ChannelName[1..].Split('-', 3).Select(u => long.TryParse(u, out long up) ? up : -1);
+                    if(uids.Count() != 2)
+                        return;
+
+                    IEnumerable<ChatUser> users = Users.Where(u => uids.Any(uid => uid == u.UserId));
+                    ChatUser? target = users.FirstOrDefault(u => u.UserId != mce.SenderId);
+                    if(target == null)
+                        return;
+
+                    foreach(ChatUser user in users)
+                        SendTo(user, new MessageAddPacket(
+                            mce.MessageId,
+                            DateTimeOffset.Now,
+                            mce.SenderId,
+                            mce.SenderId == user.UserId ? $"{target.LegacyName} {mce.MessageText}" : mce.MessageText,
+                            mce.IsAction,
+                            true
+                        ));
+                } else {
+                    ChatChannel? channel = Channels.FirstOrDefault(c => c.NameEquals(mce.ChannelName));
+                    if(channel != null)
+                        SendTo(channel, new MessageAddPacket(
+                            mce.MessageId,
+                            DateTimeOffset.Now,
+                            mce.SenderId,
+                            mce.MessageText,
+                            mce.IsAction,
+                            false
+                        ));
+                }
+
+                Events.AddEvent(
+                    mce.MessageId, "msg:add",
+                    mce.ChannelName,
+                    mce.SenderId, mce.SenderName, mce.SenderColour, mce.SenderRank, mce.SenderNickName, mce.SenderPerms,
+                    new { text = mce.MessageText },
+                    (mce.IsBroadcast ? StoredEventFlags.Broadcast : 0)
+                    | (mce.IsAction ? StoredEventFlags.Action : 0)
+                    | (mce.IsPrivate ? StoredEventFlags.Private : 0)
+                );
+                return;
+            }
         }
 
         public void Update() {
-            Bans.RemoveExpired();
-            CheckPings();
+            foreach(ChatConnection conn in Connections)
+                if(!conn.IsDisposed && conn.HasTimedOut) {
+                    conn.Dispose();
+                    Logger.Write($"Nuked connection {conn.Id} associated with {conn.User}.");
+                }
+
+            Connections.RemoveWhere(conn => conn.IsDisposed);
+
+            foreach(ChatUser user in Users)
+                if(!Connections.Any(conn => conn.User == user)) {
+                    HandleDisconnect(user, ChatUserDisconnectReason.TimeOut);
+                    Logger.Write($"Timed out {user} (no more connections).");
+                }
         }
 
-        public void BanUser(ChatUser user, DateTimeOffset? until = null, bool banIPs = false, UserDisconnectReason reason = UserDisconnectReason.Kicked) {
-            if (until.HasValue && until.Value <= DateTimeOffset.UtcNow)
-                until = null;
+        public void SafeUpdate() {
+            ContextAccess.Wait();
+            try {
+                Update();
+            } finally {
+                ContextAccess.Release();
+            }
+        }
 
-            if (until.HasValue) {
-                user.Send(new ForceDisconnectPacket(ForceDisconnectReason.Banned, until.Value));
-                Bans.Add(user, until.Value);
+        public bool IsInChannel(ChatUser? user, ChatChannel? channel) {
+            return user != null
+                && channel != null
+                && ChannelUsers.Contains(new ChannelUserAssoc(user.UserId, channel.Name));
+        }
 
-                if (banIPs) {
-                    foreach (IPAddress ip in user.RemoteAddresses)
-                        Bans.Add(ip, until.Value);
-                }
+        public string[] GetUserChannelNames(ChatUser user) {
+            return ChannelUsers.Where(cu => cu.UserId == user.UserId).Select(cu => cu.ChannelName).ToArray();
+        }
+
+        public ChatChannel[] GetUserChannels(ChatUser user) {
+            string[] names = GetUserChannelNames(user);
+            return Channels.Where(c => names.Any(n => c.NameEquals(n))).ToArray();
+        }
+
+        public long[] GetChannelUserIds(ChatChannel channel) {
+            return ChannelUsers.Where(cu => channel.NameEquals(cu.ChannelName)).Select(cu => cu.UserId).ToArray();
+        }
+
+        public ChatUser[] GetChannelUsers(ChatChannel channel) {
+            long[] ids = GetChannelUserIds(channel);
+            return Users.Where(u => ids.Contains(u.UserId)).ToArray();
+        }
+
+        public void UpdateUser(
+            ChatUser user,
+            string? userName = null,
+            string? nickName = null,
+            ChatColour? colour = null,
+            ChatUserStatus? status = null,
+            string? statusText = null,
+            int? rank = null,
+            ChatUserPermissions? perms = null,
+            bool? isSuper = null,
+            bool silent = false
+        ) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+
+            bool hasChanged = false;
+            string? previousName = null;
+
+            if(userName != null && !user.UserName.Equals(userName)) {
+                user.UserName = userName;
+                hasChanged = true;
+            }
+
+            if(nickName != null && !user.NickName.Equals(nickName)) {
+                if(!silent)
+                    previousName = string.IsNullOrWhiteSpace(user.NickName) ? user.UserName : user.NickName;
+
+                user.NickName = nickName;
+                hasChanged = true;
+            }
+
+            if(colour.HasValue && user.Colour != colour.Value) {
+                user.Colour = colour.Value;
+                hasChanged = true;
+            }
+
+            if(status.HasValue && user.Status != status.Value) {
+                user.Status = status.Value;
+                hasChanged = true;
+            }
+
+            if(statusText != null && !user.StatusText.Equals(statusText)) {
+                user.StatusText = statusText;
+                hasChanged = true;
+            }
+
+            if(rank != null && user.Rank != rank) {
+                user.Rank = (int)rank;
+                hasChanged = true;
+            }
+
+            if(perms.HasValue && user.Permissions != perms) {
+                user.Permissions = perms.Value;
+                hasChanged = true;
+            }
+
+            if(isSuper.HasValue) {
+                user.IsSuper = isSuper.Value;
+                hasChanged = true;
+            }
+
+            if(hasChanged) {
+                if(previousName != null)
+                    SendToUserChannels(user, new UserUpdateNotificationPacket(previousName, user.LegacyNameWithStatus));
+
+                SendToUserChannels(user, new UserUpdatePacket(
+                    user.UserId,
+                    user.LegacyNameWithStatus,
+                    user.Colour,
+                    user.Rank,
+                    user.Permissions
+                ));
+            }
+        }
+
+        public void BanUser(ChatUser user, TimeSpan duration, ChatUserDisconnectReason reason = ChatUserDisconnectReason.Kicked) {
+            if(duration > TimeSpan.Zero) {
+                DateTimeOffset expires = duration >= TimeSpan.MaxValue ? DateTimeOffset.MaxValue : DateTimeOffset.Now + duration;
+                SendTo(user, new ForceDisconnectPacket(expires));
             } else
-                user.Send(new ForceDisconnectPacket(ForceDisconnectReason.Kicked));
+                SendTo(user, new ForceDisconnectPacket());
 
-            user.Close();
-            UserLeave(user.Channel, user, reason);
+            foreach(ChatConnection conn in Connections)
+                if(conn.User == user)
+                    conn.Dispose();
+            Connections.RemoveWhere(conn => conn.IsDisposed);
+
+            HandleDisconnect(user, reason);
         }
 
-        public void HandleJoin(ChatUser user, ChatChannel chan, ChatUserSession sess) {
-            if (!chan.HasUser(user)) {
-                chan.Send(new UserConnectPacket(DateTimeOffset.Now, user));
-                Events.Add(new UserConnectEvent(DateTimeOffset.Now, user, chan));
-            }
-
-            sess.Send(new AuthSuccessPacket(user, chan, sess));
-            sess.Send(new ContextUsersPacket(chan.GetUsers(new[] { user })));
-
-            IEnumerable<IChatEvent> msgs = Events.GetTargetLog(chan);
-
-            foreach(IChatEvent msg in msgs)
-                sess.Send(new ContextMessagePacket(msg));
-
-            sess.Send(new ContextChannelsPacket(Channels.OfHierarchy(user.Rank)));
-
-            if (!chan.HasUser(user))
-                chan.UserJoin(user);
-
-            if (!Users.Contains(user))
-                Users.Add(user);
+        public void HandleChannelEventLog(string channelName, Action<IServerPacket> handler) {
+            foreach(StoredEventInfo msg in Events.GetChannelEventLog(channelName))
+                handler(msg.Type switch {
+                    "user:connect" => new UserConnectLogPacket(msg.Created, msg.Sender?.LegacyName ?? string.Empty),
+                    "user:disconnect" => new UserDisconnectLogPacket(
+                        msg.Created,
+                        msg.Sender?.LegacyNameWithStatus ?? string.Empty,
+                        (ChatUserDisconnectReason)msg.Data.RootElement.GetProperty("reason").GetByte()
+                    ),
+                    _ => new MessagePopulatePacket(msg),
+                });
         }
 
-        public void UserLeave(ChatChannel chan, ChatUser user, UserDisconnectReason reason = UserDisconnectReason.Leave) {
-            user.Status = ChatUserStatus.Offline;
-
-            if (chan == null) {
-                foreach(ChatChannel channel in user.GetChannels()) {
-                    UserLeave(channel, user, reason);
-                }
-                return;
+        public void HandleJoin(ChatUser user, ChatChannel chan, ChatConnection conn, int maxMsgLength) {
+            if(!IsInChannel(user, chan)) {
+                SendTo(chan, new UserConnectPacket(
+                    DateTimeOffset.Now,
+                    user.UserId,
+                    user.LegacyNameWithStatus,
+                    user.Colour,
+                    user.Rank,
+                    user.Permissions
+                ));
+                Events.AddEvent("user:connect", user, chan, flags: StoredEventFlags.Log);
             }
 
-            if (chan.IsTemporary && chan.Owner == user)
-                Channels.Remove(chan);
+            conn.Send(new AuthSuccessPacket(
+                user.UserId,
+                user.LegacyNameWithStatus,
+                user.Colour,
+                user.Rank,
+                user.Permissions,
+                chan.Name,
+                maxMsgLength
+            ));
+            conn.Send(new UsersPopulatePacket(GetChannelUsers(chan).Except(new[] { user }).Select(
+                user => new UsersPopulatePacket.ListEntry(user.UserId, user.LegacyNameWithStatus, user.Colour, user.Rank, user.Permissions, true)
+            ).OrderByDescending(user => user.Rank).ToArray()));
 
-            chan.UserLeave(user);
-            chan.Send(new UserDisconnectPacket(DateTimeOffset.Now, user, reason));
-            Events.Add(new UserDisconnectEvent(DateTimeOffset.Now, user, chan, reason));
+            HandleChannelEventLog(chan.Name, p => conn.Send(p));
+
+            conn.Send(new ChannelsPopulatePacket(Channels.Where(c => c.Rank <= user.Rank).Select(
+                channel => new ChannelsPopulatePacket.ListEntry(channel.Name, channel.HasPassword, channel.IsTemporary)
+            ).ToArray()));
+
+            Users.Add(user);
+
+            ChannelUsers.Add(new ChannelUserAssoc(user.UserId, chan.Name));
+            UserLastChannel[user.UserId] = chan;
+        }
+
+        public void HandleDisconnect(ChatUser user, ChatUserDisconnectReason reason = ChatUserDisconnectReason.Leave) {
+            UpdateUser(user, status: ChatUserStatus.Offline);
+            Users.Remove(user);
+            UserLastChannel.Remove(user.UserId);
+
+            ChatChannel[] channels = GetUserChannels(user);
+
+            foreach(ChatChannel chan in channels) {
+                ChannelUsers.Remove(new ChannelUserAssoc(user.UserId, chan.Name));
+
+                SendTo(chan, new UserDisconnectPacket(DateTimeOffset.Now, user.UserId, user.LegacyNameWithStatus, reason));
+                Events.AddEvent("user:disconnect", user, chan, new { reason = (int)reason }, StoredEventFlags.Log);
+
+                if(chan.IsTemporary && chan.IsOwner(user))
+                    RemoveChannel(chan);
+            }
         }
 
         public void SwitchChannel(ChatUser user, ChatChannel chan, string password) {
-            if (user.CurrentChannel == chan) {
-                //user.Send(true, @"samechan", chan.Name);
-                user.ForceChannel();
+            if(UserLastChannel.TryGetValue(user.UserId, out ChatChannel? ulc) && chan == ulc) {
+                ForceChannel(user);
                 return;
             }
 
-            if (!user.Can(ChatUserPermissions.JoinAnyChannel) && chan.Owner != user) {
-                if (chan.Rank > user.Rank) {
-                    user.Send(new LegacyCommandResponse(LCR.CHANNEL_INSUFFICIENT_HIERARCHY, true, chan.Name));
-                    user.ForceChannel();
+            if(!user.Can(ChatUserPermissions.JoinAnyChannel) && chan.IsOwner(user)) {
+                if(chan.Rank > user.Rank) {
+                    SendTo(user, new ChannelRankTooLowErrorPacket(chan.Name));
+                    ForceChannel(user);
                     return;
                 }
 
-                if (chan.Password != password) {
-                    user.Send(new LegacyCommandResponse(LCR.CHANNEL_INVALID_PASSWORD, true, chan.Name));
-                    user.ForceChannel();
+                if(!string.IsNullOrEmpty(chan.Password) && chan.Password.Equals(password)) {
+                    SendTo(user, new ChannelPasswordWrongErrorPacket(chan.Name));
+                    ForceChannel(user);
                     return;
                 }
             }
@@ -119,72 +313,137 @@ namespace SharpChat {
         }
 
         public void ForceChannelSwitch(ChatUser user, ChatChannel chan) {
-            if (!Channels.Contains(chan))
+            if(!Channels.Contains(chan))
                 return;
 
-            ChatChannel oldChan = user.CurrentChannel;
+            ChatChannel oldChan = UserLastChannel[user.UserId];
 
-            oldChan.Send(new UserChannelLeavePacket(user));
-            Events.Add(new UserChannelLeaveEvent(DateTimeOffset.Now, user, oldChan));
-            chan.Send(new UserChannelJoinPacket(user));
-            Events.Add(new UserChannelJoinEvent(DateTimeOffset.Now, user, chan));
+            SendTo(oldChan, new UserChannelLeavePacket(user.UserId));
+            Events.AddEvent("chan:leave", user, oldChan, flags: StoredEventFlags.Log);
+            SendTo(chan, new UserChannelJoinPacket(user.UserId, user.LegacyNameWithStatus, user.Colour, user.Rank, user.Permissions));
+            Events.AddEvent("chan:join", user, oldChan, flags: StoredEventFlags.Log);
 
-            user.Send(new ContextClearPacket(chan, ContextClearMode.MessagesUsers));
-            user.Send(new ContextUsersPacket(chan.GetUsers(new[] { user })));
+            SendTo(user, new ContextClearPacket(ContextClearPacket.ClearMode.MessagesUsers));
+            SendTo(user, new UsersPopulatePacket(GetChannelUsers(chan).Except(new[] { user }).Select(
+                user => new UsersPopulatePacket.ListEntry(user.UserId, user.LegacyNameWithStatus, user.Colour, user.Rank, user.Permissions, true)
+            ).OrderByDescending(u => u.Rank).ToArray()));
 
-            IEnumerable<IChatEvent> msgs = Events.GetTargetLog(chan);
+            HandleChannelEventLog(chan.Name, p => SendTo(user, p));
+            ForceChannel(user, chan);
 
-            foreach (IChatEvent msg in msgs)
-                user.Send(new ContextMessagePacket(msg));
+            ChannelUsers.Remove(new ChannelUserAssoc(user.UserId, oldChan.Name));
+            ChannelUsers.Add(new ChannelUserAssoc(user.UserId, chan.Name));
+            UserLastChannel[user.UserId] = chan;
 
-            user.ForceChannel(chan);
-            oldChan.UserLeave(user);
-            chan.UserJoin(user);
-
-            if (oldChan.IsTemporary && oldChan.Owner == user)
-                Channels.Remove(oldChan);
-        }
-
-        public void CheckPings() {
-            lock(Users)
-                foreach (ChatUser user in Users.All()) {
-                    IEnumerable<ChatUserSession> timedOut = user.GetDeadSessions();
-
-                    foreach(ChatUserSession sess in timedOut) {
-                        user.RemoveSession(sess);
-                        sess.Dispose();
-                        Logger.Write($@"Nuked session {sess.Id} from {user.Username} (timeout)");
-                    }
-
-                    if(!user.HasSessions)
-                        UserLeave(null, user, UserDisconnectReason.TimeOut);
-                }
+            if(oldChan.IsTemporary && oldChan.IsOwner(user))
+                RemoveChannel(oldChan);
         }
 
         public void Send(IServerPacket packet) {
-            foreach (ChatUser user in Users.All())
-                user.Send(packet);
+            if(packet == null)
+                throw new ArgumentNullException(nameof(packet));
+
+            foreach(ChatConnection conn in Connections)
+                if(conn.IsAuthed)
+                    conn.Send(packet);
         }
 
-        ~ChatContext()
-            => Dispose(false);
+        public void SendTo(ChatUser user, IServerPacket packet) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(packet == null)
+                throw new ArgumentNullException(nameof(packet));
 
-        public void Dispose()
-            => Dispose(true);
+            foreach(ChatConnection conn in Connections)
+                if(conn.IsAlive && conn.User == user)
+                    conn.Send(packet);
+        }
 
-        private void Dispose(bool disposing) {
-            if (IsDisposed)
+        public void SendTo(ChatChannel channel, IServerPacket packet) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(packet == null)
+                throw new ArgumentNullException(nameof(packet));
+
+            // might be faster to grab the users first and then cascade into that SendTo
+            IEnumerable<ChatConnection> conns = Connections.Where(c => c.IsAuthed && IsInChannel(c.User, channel));
+            foreach(ChatConnection conn in conns)
+                conn.Send(packet);
+        }
+
+        public void SendToUserChannels(ChatUser user, IServerPacket packet) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(packet == null)
+                throw new ArgumentNullException(nameof(packet));
+
+            IEnumerable<ChatChannel> chans = Channels.Where(c => IsInChannel(user, c));
+            IEnumerable<ChatConnection> conns = Connections.Where(conn => conn.IsAuthed && ChannelUsers.Any(cu => cu.UserId == conn.User?.UserId && chans.Any(chan => chan.NameEquals(cu.ChannelName))));
+            foreach(ChatConnection conn in conns)
+                conn.Send(packet);
+        }
+
+        public IPAddress[] GetRemoteAddresses(ChatUser user) {
+            return Connections.Where(c => c.IsAlive && c.User == user).Select(c => c.RemoteAddress).Distinct().ToArray();
+        }
+
+        public void ForceChannel(ChatUser user, ChatChannel? chan = null) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+
+            if(chan == null && !UserLastChannel.TryGetValue(user.UserId, out chan))
+                throw new ArgumentException("no channel???");
+
+            SendTo(user, new UserChannelForceJoinPacket(chan.Name));
+        }
+
+        public void UpdateChannel(
+            ChatChannel channel,
+            bool? temporary = null,
+            int? minRank = null,
+            string? password = null
+        ) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(!Channels.Contains(channel))
+                throw new ArgumentException("Provided channel is not registered with this manager.", nameof(channel));
+
+            string prevName = channel.Name;
+
+            if(temporary.HasValue)
+                channel.IsTemporary = temporary.Value;
+
+            if(minRank.HasValue)
+                channel.Rank = minRank.Value;
+
+            if(password != null)
+                channel.Password = password;
+
+            // TODO: Users that no longer have access to the channel/gained access to the channel by the rank change should receive delete and create packets respectively
+            foreach(ChatUser user in Users.Where(u => u.Rank >= channel.Rank)) {
+                SendTo(user, new ChannelUpdatePacket(prevName, channel.Name, channel.HasPassword, channel.IsTemporary));
+            }
+        }
+
+        public void RemoveChannel(ChatChannel channel) {
+            if(channel == null || !Channels.Any())
                 return;
-            IsDisposed = true;
 
-            BumpTimer?.Dispose();
-            Events?.Dispose();
-            Channels?.Dispose();
-            Users?.Dispose();
-            Bans?.Dispose();
+            ChatChannel? defaultChannel = Channels.FirstOrDefault();
+            if(defaultChannel == null)
+                return;
 
-            if (disposing)
-                GC.SuppressFinalize(this);
+            // Remove channel from the listing
+            Channels.Remove(channel);
+
+            // Move all users back to the main channel
+            // TODO: Replace this with a kick. SCv2 supports being in 0 channels, SCv1 should force the user back to DefaultChannel.
+            foreach(ChatUser user in GetChannelUsers(channel))
+                SwitchChannel(user, defaultChannel, string.Empty);
+
+            // Broadcast deletion of channel
+            foreach(ChatUser user in Users.Where(u => u.Rank >= channel.Rank))
+                SendTo(user, new ChannelDeletePacket(channel.Name));
         }
     }
 }

SharpChat/ChatEventManager.cs

@@ -1,100 +0,0 @@
-using SharpChat.Events;
-using SharpChat.Packet;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace SharpChat {
-    public class ChatEventManager : IDisposable {
-        private readonly List<IChatEvent> Events = null;
-
-        public readonly ChatContext Context;
-
-        public bool IsDisposed { get; private set; }
-
-        public ChatEventManager(ChatContext context) {
-            Context = context;
-
-            if (!Database.HasDatabase)
-                Events = new List<IChatEvent>();
-        }
-
-        public void Add(IChatEvent evt) {
-            if (evt == null)
-                throw new ArgumentNullException(nameof(evt));
-
-            if(Events != null)
-                lock(Events)
-                    Events.Add(evt);
-
-            if(Database.HasDatabase)
-                Database.LogEvent(evt);
-        }
-
-        public void Remove(IChatEvent evt) {
-            if (evt == null)
-                return;
-
-            if (Events != null)
-                lock (Events)
-                    Events.Remove(evt);
-
-            if (Database.HasDatabase)
-                Database.DeleteEvent(evt);
-
-            Context.Send(new ChatMessageDeletePacket(evt.SequenceId));
-        }
-
-        public IChatEvent Get(long seqId) {
-            if (seqId < 1)
-                return null;
-
-            if (Database.HasDatabase)
-                return Database.GetEvent(seqId);
-
-            if (Events != null)
-                lock (Events)
-                    return Events.FirstOrDefault(e => e.SequenceId == seqId);
-
-            return null;
-        }
-
-        public IEnumerable<IChatEvent> GetTargetLog(IPacketTarget target, int amount = 20, int offset = 0) {
-            if (Database.HasDatabase)
-                return Database.GetEvents(target, amount, offset).Reverse();
-
-            if (Events != null)
-                lock (Events) {
-                    IEnumerable<IChatEvent> subset = Events.Where(e => e.Target == target || e.Target == null);
-
-                    int start = subset.Count() - offset - amount;
-
-                    if(start < 0) {
-                        amount += start;
-                        start = 0;
-                    }
-
-                    return subset.Skip(start).Take(amount).ToList();
-                }
-
-            return Enumerable.Empty<IChatEvent>();
-        }
-
-        ~ChatEventManager()
-            => Dispose(false);
-
-        public void Dispose()
-            => Dispose(true);
-
-        private void Dispose(bool disposing) {
-            if (IsDisposed)
-                return;
-            IsDisposed = true;
-
-            Events?.Clear();
-
-            if (disposing)
-                GC.SuppressFinalize(this);
-        }
-    }
-}

SharpChat/ChatPacketHandlerContext.cs

@@ -0,0 +1,27 @@
+using System;
+
+namespace SharpChat {
+    public class ChatPacketHandlerContext {
+        public string Text { get; }
+        public ChatContext Chat { get; }
+        public ChatConnection Connection { get; }
+
+        public ChatPacketHandlerContext(
+            string text,
+            ChatContext chat,
+            ChatConnection connection
+        ) {
+            Text = text ?? throw new ArgumentNullException(nameof(text));
+            Chat = chat ?? throw new ArgumentNullException(nameof(chat));
+            Connection = connection ?? throw new ArgumentNullException(nameof(connection));
+        }
+
+        public bool CheckPacketId(string packetId) {
+            return Text == packetId || Text.StartsWith(packetId + '\t');
+        }
+
+        public string[] SplitText(int expect) {
+            return Text.Split('\t', expect + 1);
+        }
+    }
+}

SharpChat/ChatRateLimiter.cs

@@ -1,46 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace SharpChat {
-    public enum ChatRateLimitState {
-        None,
-        Warning,
-        Kick,
-    }
-
-    public class ChatRateLimiter {
-        private const int FLOOD_PROTECTION_AMOUNT = 30;
-        private const int FLOOD_PROTECTION_THRESHOLD = 10;
-
-        private readonly Queue<DateTimeOffset> TimePoints = new Queue<DateTimeOffset>();
-
-        public ChatRateLimitState State {
-            get {
-                lock (TimePoints) {
-                    if (TimePoints.Count == FLOOD_PROTECTION_AMOUNT) {
-                        if ((TimePoints.Last() - TimePoints.First()).TotalSeconds <= FLOOD_PROTECTION_THRESHOLD)
-                            return ChatRateLimitState.Kick;
-
-                        if ((TimePoints.Last() - TimePoints.Skip(5).First()).TotalSeconds <= FLOOD_PROTECTION_THRESHOLD)
-                            return ChatRateLimitState.Warning;
-                    }
-
-                    return ChatRateLimitState.None;
-                }
-            }
-        }
-
-        public void AddTimePoint(DateTimeOffset? dto = null) {
-            if (!dto.HasValue)
-                dto = DateTimeOffset.Now;
-
-            lock (TimePoints) {
-                if (TimePoints.Count >= FLOOD_PROTECTION_AMOUNT)
-                    TimePoints.Dequeue();
-
-                TimePoints.Enqueue(dto.Value);
-            }
-        }
-    }
-}

SharpChat/ChatUser.cs

@@ -1,215 +1,87 @@
-using SharpChat.Flashii;
-using SharpChat.Packet;
-using System;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.Linq;
-using System.Net;
+using System;
 using System.Text;
 
 namespace SharpChat {
-    public class BasicUser : IEquatable<BasicUser> {
-        private const int RANK_NO_FLOOD = 9;
+    public class ChatUser : IEquatable<ChatUser> {
+        public const int DEFAULT_SIZE = 30;
+        public const int DEFAULT_MINIMUM_DELAY = 10000;
+        public const int DEFAULT_RISKY_OFFSET = 5;
 
-        public long UserId { get; set; }
-        public string Username { get; set; }
+        public long UserId { get; }
+        public string UserName { get; set; }
         public ChatColour Colour { get; set; }
         public int Rank { get; set; }
-        public string Nickname { get; set; }
         public ChatUserPermissions Permissions { get; set; }
-        public ChatUserStatus Status { get; set; } = ChatUserStatus.Online;
-        public string StatusMessage { get; set; }
+        public bool IsSuper { get; set; }
+        public string NickName { get; set; }
+        public ChatUserStatus Status { get; set; }
+        public string StatusText { get; set; }
 
-        public bool HasFloodProtection
-            => Rank < RANK_NO_FLOOD;
+        public string LegacyName => string.IsNullOrWhiteSpace(NickName) ? UserName : $"~{NickName}";
 
-        public bool Equals([AllowNull] BasicUser other)
-            => UserId == other.UserId;
-
-        public string DisplayName {
+        public string LegacyNameWithStatus {
             get {
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new();
 
                 if(Status == ChatUserStatus.Away)
-                    sb.AppendFormat(@"&lt;{0}&gt;_", StatusMessage.Substring(0, Math.Min(StatusMessage.Length, 5)).ToUpperInvariant());
+                    sb.AppendFormat("&lt;{0}&gt;_", StatusText[..Math.Min(StatusText.Length, 5)].ToUpperInvariant());
 
-                if(string.IsNullOrWhiteSpace(Nickname))
-                    sb.Append(Username);
-                else {
-                    sb.Append('~');
-                    sb.Append(Nickname);
-                }
+                sb.Append(LegacyName);
 
                 return sb.ToString();
             }
         }
 
+        public ChatUser(
+            long userId,
+            string? userName,
+            ChatColour colour,
+            int rank,
+            ChatUserPermissions perms,
+            string? nickName = null,
+            ChatUserStatus status = ChatUserStatus.Online,
+            string? statusText = null,
+            bool isSuper = false
+        ) {
+            UserId = userId;
+            UserName = userName ?? throw new ArgumentNullException(nameof(userName));
+            Colour = colour;
+            Rank = rank;
+            Permissions = perms;
+            NickName = nickName ?? string.Empty;
+            Status = status;
+            StatusText = statusText ?? string.Empty;
+            IsSuper = isSuper;
+        }
+
         public bool Can(ChatUserPermissions perm, bool strict = false) {
             ChatUserPermissions perms = Permissions & perm;
             return strict ? perms == perm : perms > 0;
         }
 
-        public string Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append(UserId);
-            sb.Append('\t');
-            sb.Append(DisplayName);
-            sb.Append('\t');
-            sb.Append(Colour);
-            sb.Append('\t');
-            sb.Append(Rank);
-            sb.Append(' ');
-            sb.Append(Can(ChatUserPermissions.KickUser) ? '1' : '0');
-            sb.Append(@" 0 ");
-            sb.Append(Can(ChatUserPermissions.SetOwnNickname) ? '1' : '0');
-            sb.Append(' ');
-            sb.Append(Can(ChatUserPermissions.CreateChannel | ChatUserPermissions.SetChannelPermanent, true) ? 2 : (
-                Can(ChatUserPermissions.CreateChannel) ? 1 : 0
-            ));
-
-            return sb.ToString();
-        }
-    }
-
-    public class ChatUser : BasicUser, IPacketTarget {
-        public DateTimeOffset SilencedUntil { get; set; }
-
-        private readonly List<ChatUserSession> Sessions = new List<ChatUserSession>();
-        private readonly List<ChatChannel> Channels = new List<ChatChannel>();
-
-        public readonly ChatRateLimiter RateLimiter = new ChatRateLimiter();
-
-        public string TargetName => @"@log";
-
-        public ChatChannel Channel {
-            get {
-                lock(Channels)
-                    return Channels.FirstOrDefault();
-            }
+        public bool NameEquals(string? name) {
+            return string.Equals(name, UserName, StringComparison.InvariantCultureIgnoreCase)
+                || string.Equals(name, NickName, StringComparison.InvariantCultureIgnoreCase)
+                || string.Equals(name, LegacyName, StringComparison.InvariantCultureIgnoreCase)
+                || string.Equals(name, LegacyNameWithStatus, StringComparison.InvariantCultureIgnoreCase);
         }
 
-        // This needs to be a session thing
-        public ChatChannel CurrentChannel { get; private set; }
-
-        public bool IsSilenced
-            => DateTimeOffset.UtcNow - SilencedUntil <= TimeSpan.Zero;
-
-        public bool HasSessions {
-            get {
-                lock(Sessions)
-                    return Sessions.Where(c => !c.HasTimedOut && !c.IsDisposed).Any();
-            }
+        public override int GetHashCode() {
+            return UserId.GetHashCode();
         }
 
-        public int SessionCount {
-            get {
-                lock (Sessions)
-                    return Sessions.Where(c => !c.HasTimedOut && !c.IsDisposed).Count();
-            }
+        public override bool Equals(object? obj) {
+            return Equals(obj as ChatUser);
         }
 
-        public IEnumerable<IPAddress> RemoteAddresses {
-            get {
-                lock(Sessions)
-                    return Sessions.Select(c => c.RemoteAddress);
-            }
+        public bool Equals(ChatUser? other) {
+            return UserId == other?.UserId;
         }
 
-        public ChatUser() {
-        }
-
-        public ChatUser(FlashiiAuth auth) {
-            UserId = auth.UserId;
-            ApplyAuth(auth, true);
-        }
-
-        public void ApplyAuth(FlashiiAuth auth, bool invalidateRestrictions = false) {
-            Username = auth.Username;
-
-            if (Status == ChatUserStatus.Offline)
-                Status = ChatUserStatus.Online;
-            
-            Colour = new ChatColour(auth.ColourRaw);
-            Rank = auth.Rank;
-            Permissions = auth.Permissions;
-
-            if (invalidateRestrictions || !IsSilenced)
-                SilencedUntil = auth.SilencedUntil;
-        }
-
-        public void Send(IServerPacket packet) {
-            lock(Sessions)
-                foreach (ChatUserSession conn in Sessions)
-                    conn.Send(packet);
-        }
-
-        public void Close() {
-            lock (Sessions) {
-                foreach (ChatUserSession conn in Sessions)
-                    conn.Dispose();
-                Sessions.Clear();
-            }
-        }
-
-        public void ForceChannel(ChatChannel chan = null)
-            => Send(new UserChannelForceJoinPacket(chan ?? CurrentChannel));
-
-        public void FocusChannel(ChatChannel chan) {
-            lock(Channels) {
-                if(InChannel(chan))
-                    CurrentChannel = chan;
-            }
-        }
-
-        public bool InChannel(ChatChannel chan) {
-            lock (Channels)
-                return Channels.Contains(chan);
-        }
-
-        public void JoinChannel(ChatChannel chan) {
-            lock (Channels) {
-                if(!InChannel(chan)) {
-                    Channels.Add(chan);
-                    CurrentChannel = chan;
-                }
-            }
-        }
-
-        public void LeaveChannel(ChatChannel chan) {
-            lock(Channels) {
-                Channels.Remove(chan);
-                CurrentChannel = Channels.FirstOrDefault();
-            }
-        }
-
-        public IEnumerable<ChatChannel> GetChannels() {
-            lock (Channels)
-                return Channels.ToList();
-        }
-
-        public void AddSession(ChatUserSession sess) {
-            if (sess == null)
-                return;
-            sess.User = this;
-
-            lock (Sessions)
-                Sessions.Add(sess);
-        }
-
-        public void RemoveSession(ChatUserSession sess) {
-            if (sess == null)
-                return;
-            if(!sess.IsDisposed) // this could be possible
-                sess.User = null;
-
-            lock(Sessions)
-                Sessions.Remove(sess);
-        }
-
-        public IEnumerable<ChatUserSession> GetDeadSessions() {
-            lock (Sessions)
-                return Sessions.Where(x => x.HasTimedOut || x.IsDisposed).ToList();
+        public static string GetDMChannelName(ChatUser user1, ChatUser user2) {
+            return user1.UserId < user2.UserId
+                ? $"@{user1.UserId}-{user2.UserId}"
+                : $"@{user2.UserId}-{user1.UserId}";
         }
     }
 }

SharpChat/ChatUserDisconnectReason.cs

@@ -0,0 +1,8 @@
+namespace SharpChat {
+    public enum ChatUserDisconnectReason {
+        Leave,
+        TimeOut,
+        Kicked,
+        Flood,
+    }
+}

SharpChat/ChatUserPermissions.cs

@@ -5,7 +5,7 @@ namespace SharpChat {
     public enum ChatUserPermissions : int {
         KickUser            = 0x00000001,
         BanUser             = 0x00000002,
-        SilenceUser         = 0x00000004,
+        //SilenceUser       = 0x00000004,
         Broadcast           = 0x00000008,
         SetOwnNickname      = 0x00000010,
         SetOthersNickname   = 0x00000020,
@@ -21,5 +21,6 @@ namespace SharpChat {
         EditOwnMessage      = 0x00002000,
         EditAnyMessage      = 0x00004000,
         SeeIPAddress        = 0x00008000,
+        ViewLogs            = 0x00040000,
     }
 }

SharpChat/ChatUserSession.cs

@@ -1,94 +0,0 @@
-using Fleck;
-using System;
-using System.Collections.Generic;
-using System.Net;
-
-namespace SharpChat {
-    public class ChatUserSession : IDisposable, IPacketTarget {
-        public const int ID_LENGTH = 32;
-
-#if DEBUG
-        public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(1);
-#else
-        public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(5);
-#endif
-
-        public IWebSocketConnection Connection { get; }
-
-        public string Id { get; private set; }
-        public bool IsDisposed { get; private set; }
-        public DateTimeOffset LastPing { get; set; } = DateTimeOffset.MinValue;
-        public ChatUser User { get; set; }
-
-        private static int CloseCode { get; set; } = 1000;
-
-        public string TargetName => @"@log";
-
-
-        private IPAddress _RemoteAddress = null;
-
-        public IPAddress RemoteAddress {
-            get {
-                if(_RemoteAddress == null) {
-                    if((Connection.ConnectionInfo.ClientIpAddress == @"127.0.0.1" || Connection.ConnectionInfo.ClientIpAddress == @"::1")
-                        && Connection.ConnectionInfo.Headers.ContainsKey(@"X-Real-IP"))
-                        _RemoteAddress = IPAddress.Parse(Connection.ConnectionInfo.Headers[@"X-Real-IP"]);
-                    else
-                        _RemoteAddress = IPAddress.Parse(Connection.ConnectionInfo.ClientIpAddress);
-                }
-
-                return _RemoteAddress;
-
-            }
-        }
-
-        public ChatUserSession(IWebSocketConnection ws) {
-            Connection = ws;
-            Id = GenerateId();
-        }
-
-        private static string GenerateId() {
-            byte[] buffer = new byte[ID_LENGTH];
-            RNG.NextBytes(buffer);
-            return buffer.GetIdString();
-        }
-
-        public void Send(IServerPacket packet) {
-            if(!Connection.IsAvailable)
-                return;
-
-            IEnumerable<string> data = packet.Pack();
-
-            if(data != null)
-                foreach(string line in data)
-                    if(!string.IsNullOrWhiteSpace(line))
-                        Connection.Send(line);
-        }
-
-        public void BumpPing()
-            => LastPing = DateTimeOffset.Now;
-
-        public bool HasTimedOut
-            => DateTimeOffset.Now - LastPing > SessionTimeOut;
-
-        public void PrepareForRestart()
-            => CloseCode = 1012;
-
-        public void Dispose()
-            => Dispose(true);
-
-        ~ChatUserSession()
-            => Dispose(false);
-
-        private void Dispose(bool disposing) {
-            if(IsDisposed)
-                return;
-
-            IsDisposed = true;
-            Connection.Close(CloseCode);
-
-            if(disposing)
-                GC.SuppressFinalize(this);
-        }
-    }
-}

SharpChat/Commands/AFKCommand.cs

@@ -1,31 +0,0 @@
-using SharpChat.Events;
-using SharpChat.Packet;
-using System.Linq;
-
-namespace SharpChat.Commands {
-    public class AFKCommand : IChatCommand {
-        private const string DEFAULT = @"AFK";
-        private const int MAX_LENGTH = 5;
-
-        public bool IsMatch(string name) {
-            return name == @"afk";
-        }
-
-        public IChatMessage Dispatch(IChatCommandContext context) {
-            string statusText = context.Args.ElementAtOrDefault(1);
-            if(string.IsNullOrWhiteSpace(statusText))
-                statusText = DEFAULT;
-            else {
-                statusText = statusText.Trim();
-                if(statusText.Length > MAX_LENGTH)
-                    statusText = statusText.Substring(0, MAX_LENGTH).Trim();
-            }
-
-            context.User.Status = ChatUserStatus.Away;
-            context.User.StatusMessage = statusText;
-            context.Channel.Send(new UserUpdatePacket(context.User));
-
-            return null;
-        }
-    }
-}

SharpChat/Commands/BanListCommand.cs

@@ -0,0 +1,35 @@
+using SharpChat.Misuzu;
+using SharpChat.Packet;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace SharpChat.Commands {
+    public class BanListCommand : IChatCommand {
+        private readonly MisuzuClient Misuzu;
+
+        public BanListCommand(MisuzuClient msz) {
+            Misuzu = msz ?? throw new ArgumentNullException(nameof(msz));
+        }
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("bans")
+                || ctx.NameEquals("banned");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.BanUser | ChatUserPermissions.KickUser)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            Task.Run(async () => {
+                ctx.Chat.SendTo(ctx.User, new BanListResponsePacket(
+                    (await Misuzu.GetBanListAsync() ?? Array.Empty<MisuzuBanInfo>()).Select(
+                        ban => string.IsNullOrEmpty(ban.UserName) ? (string.IsNullOrEmpty(ban.RemoteAddress) ? string.Empty : ban.RemoteAddress) : ban.UserName
+                    ).ToArray()
+                ));
+            }).Wait();
+        }
+    }
+}

SharpChat/Commands/ChannelCreateCommand.cs

@@ -0,0 +1,64 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class ChannelCreateCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("create");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.CreateChannel)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string firstArg = ctx.Args.First();
+
+            bool createChanHasHierarchy;
+            if(!ctx.Args.Any() || (createChanHasHierarchy = firstArg.All(char.IsDigit) && ctx.Args.Length < 2)) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            int createChanHierarchy = 0;
+            if(createChanHasHierarchy)
+                if(!int.TryParse(firstArg, out createChanHierarchy))
+                    createChanHierarchy = 0;
+
+            if(createChanHierarchy > ctx.User.Rank) {
+                ctx.Chat.SendTo(ctx.User, new ChannelRankTooHighErrorPacket());
+                return;
+            }
+
+            string createChanName = string.Join('_', ctx.Args.Skip(createChanHasHierarchy ? 1 : 0));
+
+            if(!ChatChannel.CheckName(createChanName)) {
+                ctx.Chat.SendTo(ctx.User, new ChannelNameFormatErrorPacket());
+                return;
+            }
+
+            if(ctx.Chat.Channels.Any(c => c.NameEquals(createChanName))) {
+                ctx.Chat.SendTo(ctx.User, new ChannelNameInUseErrorPacket(createChanName));
+                return;
+            }
+
+            ChatChannel createChan = new(
+                ctx.User, createChanName,
+                isTemporary: !ctx.User.Can(ChatUserPermissions.SetChannelPermanent),
+                rank: createChanHierarchy
+            );
+
+            ctx.Chat.Channels.Add(createChan);
+            foreach(ChatUser ccu in ctx.Chat.Users.Where(u => u.Rank >= ctx.Channel.Rank))
+                ctx.Chat.SendTo(ccu, new ChannelCreatePacket(
+                    ctx.Channel.Name,
+                    ctx.Channel.HasPassword,
+                    ctx.Channel.IsTemporary
+                ));
+
+            ctx.Chat.SwitchChannel(ctx.User, createChan, createChan.Password);
+            ctx.Chat.SendTo(ctx.User, new ChannelCreateResponsePacket(createChan.Name));
+        }
+    }
+}

SharpChat/Commands/ChannelDeleteCommand.cs

@@ -0,0 +1,36 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class ChannelDeleteCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("delchan") || (
+                ctx.NameEquals("delete")
+                && ctx.Args.FirstOrDefault()?.All(char.IsDigit) == false
+            );
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.Args.Any() || string.IsNullOrWhiteSpace(ctx.Args.FirstOrDefault())) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            string delChanName = string.Join('_', ctx.Args);
+            ChatChannel? delChan = ctx.Chat.Channels.FirstOrDefault(c => c.NameEquals(delChanName));
+
+            if(delChan == null) {
+                ctx.Chat.SendTo(ctx.User, new ChannelNotFoundErrorPacket(delChanName));
+                return;
+            }
+
+            if(!ctx.User.Can(ChatUserPermissions.DeleteChannel) && delChan.IsOwner(ctx.User)) {
+                ctx.Chat.SendTo(ctx.User, new ChannelDeleteNotAllowedErrorPacket(delChan.Name));
+                return;
+            }
+
+            ctx.Chat.RemoveChannel(delChan);
+            ctx.Chat.SendTo(ctx.User, new ChannelDeleteResponsePacket(delChan.Name));
+        }
+    }
+}

SharpChat/Commands/ChannelJoinCommand.cs

@@ -0,0 +1,23 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class ChannelJoinCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("join");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            string joinChanStr = ctx.Args.FirstOrDefault() ?? string.Empty;
+            ChatChannel? joinChan = ctx.Chat.Channels.FirstOrDefault(c => c.NameEquals(joinChanStr));
+
+            if(joinChan == null) {
+                ctx.Chat.SendTo(ctx.User, new ChannelNotFoundErrorPacket(joinChanStr));
+                ctx.Chat.ForceChannel(ctx.User);
+                return;
+            }
+
+            ctx.Chat.SwitchChannel(ctx.User, joinChan, string.Join(' ', ctx.Args.Skip(1)));
+        }
+    }
+}

SharpChat/Commands/ChannelPasswordCommand.cs

@@ -0,0 +1,25 @@
+using SharpChat.Packet;
+
+namespace SharpChat.Commands {
+    public class ChannelPasswordCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("pwd")
+                || ctx.NameEquals("password");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.SetChannelPassword) || ctx.Channel.IsOwner(ctx.User)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string chanPass = string.Join(' ', ctx.Args).Trim();
+
+            if(string.IsNullOrWhiteSpace(chanPass))
+                chanPass = string.Empty;
+
+            ctx.Chat.UpdateChannel(ctx.Channel, password: chanPass);
+            ctx.Chat.SendTo(ctx.User, new ChannelPasswordChangedResponsePacket());
+        }
+    }
+}

SharpChat/Commands/ChannelRankCommand.cs

@@ -0,0 +1,27 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class ChannelRankCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("rank")
+                || ctx.NameEquals("privilege")
+                || ctx.NameEquals("priv");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.SetChannelHierarchy) || ctx.Channel.IsOwner(ctx.User)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            if(!ctx.Args.Any() || !int.TryParse(ctx.Args.First(), out int chanHierarchy) || chanHierarchy > ctx.User.Rank) {
+                ctx.Chat.SendTo(ctx.User, new ChannelRankTooHighErrorPacket());
+                return;
+            }
+
+            ctx.Chat.UpdateChannel(ctx.Channel, minRank: chanHierarchy);
+            ctx.Chat.SendTo(ctx.User, new ChannelRankChangedResponsePacket());
+        }
+    }
+}

SharpChat/Commands/KickBanCommand.cs

@@ -0,0 +1,83 @@
+using SharpChat.Misuzu;
+using SharpChat.Packet;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace SharpChat.Commands {
+    public class KickBanCommand : IChatCommand {
+        private readonly MisuzuClient Misuzu;
+
+        public KickBanCommand(MisuzuClient msz) {
+            Misuzu = msz ?? throw new ArgumentNullException(nameof(msz));
+        }
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("kick")
+                || ctx.NameEquals("ban");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            bool isBanning = ctx.NameEquals("ban");
+
+            if(!ctx.User.Can(isBanning ? ChatUserPermissions.BanUser : ChatUserPermissions.KickUser)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string banUserTarget = ctx.Args.ElementAtOrDefault(0) ?? string.Empty;
+            string? banDurationStr = ctx.Args.ElementAtOrDefault(1);
+            int banReasonIndex = 1;
+            ChatUser? banUser = null;
+
+            if(string.IsNullOrEmpty(banUserTarget) || (banUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(banUserTarget))) == null) {
+                ctx.Chat.SendTo(ctx.User, new UserNotFoundErrorPacket(banUserTarget));
+                return;
+            }
+
+            if(!ctx.User.IsSuper && banUser.Rank >= ctx.User.Rank && banUser != ctx.User) {
+                ctx.Chat.SendTo(ctx.User, new KickBanNotAllowedErrorPacket(banUser.LegacyName));
+                return;
+            }
+
+            TimeSpan duration = isBanning ? TimeSpan.MaxValue : TimeSpan.Zero;
+            if(!string.IsNullOrWhiteSpace(banDurationStr) && double.TryParse(banDurationStr, out double durationSeconds)) {
+                if(durationSeconds < 0) {
+                    ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                    return;
+                }
+
+                duration = TimeSpan.FromSeconds(durationSeconds);
+                ++banReasonIndex;
+            }
+
+            if(duration <= TimeSpan.Zero) {
+                ctx.Chat.BanUser(banUser, duration);
+                return;
+            }
+
+            string banReason = string.Join(' ', ctx.Args.Skip(banReasonIndex));
+
+            Task.Run(async () => {
+                string userId = banUser.UserId.ToString();
+                string userIp = ctx.Chat.GetRemoteAddresses(banUser).FirstOrDefault()?.ToString() ?? string.Empty;
+
+                // obviously it makes no sense to only check for one ip address but that's current misuzu limitations
+                MisuzuBanInfo? fbi = await Misuzu.CheckBanAsync(userId, userIp);
+
+                if(fbi != null && fbi.IsBanned && !fbi.HasExpired) {
+                    ctx.Chat.SendTo(ctx.User, new KickBanNotAllowedErrorPacket(banUser.LegacyName));
+                    return;
+                }
+
+                await Misuzu.CreateBanAsync(
+                    userId, userIp,
+                    ctx.User.UserId.ToString(), ctx.Connection.RemoteAddress.ToString(),
+                    duration, banReason
+                );
+
+                ctx.Chat.BanUser(banUser, duration);
+            }).Wait();
+        }
+    }
+}

SharpChat/Commands/MessageActionCommand.cs

@@ -0,0 +1,30 @@
+using SharpChat.Events;
+using System;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class MessageActionCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("action")
+                || ctx.NameEquals("me");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.Args.Any())
+                return;
+
+            string actionStr = string.Join(' ', ctx.Args);
+            if(string.IsNullOrWhiteSpace(actionStr))
+                return;
+
+            ctx.Chat.DispatchEvent(new MessageCreateEvent(
+                SharpId.Next(),
+                ctx.Channel,
+                ctx.User,
+                DateTimeOffset.Now,
+                actionStr,
+                false, true, false
+            ));
+        }
+    }
+}

SharpChat/Commands/MessageBroadcastCommand.cs

@@ -0,0 +1,28 @@
+using SharpChat.Events;
+using SharpChat.Packet;
+using System;
+
+namespace SharpChat.Commands {
+    public class MessageBroadcastCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("say")
+                || ctx.NameEquals("broadcast");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.Broadcast)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            ctx.Chat.DispatchEvent(new MessageCreateEvent(
+                SharpId.Next(),
+                string.Empty,
+                ctx.User,
+                DateTimeOffset.Now,
+                string.Join(' ', ctx.Args),
+                false, false, true
+            ));
+        }
+    }
+}

SharpChat/Commands/MessageDeleteCommand.cs

@@ -0,0 +1,41 @@
+using SharpChat.EventStorage;
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands
+{
+    public class MessageDeleteCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("delmsg") || (
+                ctx.NameEquals("delete")
+                && ctx.Args.FirstOrDefault()?.All(char.IsDigit) == true
+            );
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            bool deleteAnyMessage = ctx.User.Can(ChatUserPermissions.DeleteAnyMessage);
+
+            if(!deleteAnyMessage && !ctx.User.Can(ChatUserPermissions.DeleteOwnMessage)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string? firstArg = ctx.Args.FirstOrDefault();
+
+            if(string.IsNullOrWhiteSpace(firstArg) || !firstArg.All(char.IsDigit) || !long.TryParse(firstArg, out long delSeqId)) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            StoredEventInfo? delMsg = ctx.Chat.Events.GetEvent(delSeqId);
+
+            if(delMsg == null || delMsg.Sender?.Rank > ctx.User.Rank || (!deleteAnyMessage && delMsg.Sender?.UserId != ctx.User.UserId)) {
+                ctx.Chat.SendTo(ctx.User, new MessageDeleteNotAllowedErrorPacket());
+                return;
+            }
+
+            ctx.Chat.Events.RemoveEvent(delMsg);
+            ctx.Chat.Send(new MessageDeletePacket(delMsg.Id));
+        }
+    }
+}

SharpChat/Commands/MessageWhisperCommand.cs

@@ -0,0 +1,40 @@
+using SharpChat.Events;
+using SharpChat.Packet;
+using System;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class MessageWhisperCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("whisper")
+                || ctx.NameEquals("msg");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(ctx.Args.Length < 2) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            string whisperUserStr = ctx.Args.FirstOrDefault() ?? string.Empty;
+            ChatUser? whisperUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(whisperUserStr));
+
+            if(whisperUser == null) {
+                ctx.Chat.SendTo(ctx.User, new UserNotFoundErrorPacket(whisperUserStr));
+                return;
+            }
+
+            if(whisperUser == ctx.User)
+                return;
+
+            ctx.Chat.DispatchEvent(new MessageCreateEvent(
+                SharpId.Next(),
+                ChatUser.GetDMChannelName(ctx.User, whisperUser),
+                ctx.User,
+                DateTimeOffset.Now,
+                string.Join(' ', ctx.Args.Skip(1)),
+                true, false, false
+            ));
+        }
+    }
+}

SharpChat/Commands/PardonAddressCommand.cs

@@ -0,0 +1,51 @@
+using SharpChat.Misuzu;
+using SharpChat.Packet;
+using System;
+using System.Linq;
+using System.Net;
+using System.Threading.Tasks;
+
+namespace SharpChat.Commands {
+    public class PardonAddressCommand : IChatCommand {
+        private readonly MisuzuClient Misuzu;
+
+        public PardonAddressCommand(MisuzuClient msz) {
+            Misuzu = msz ?? throw new ArgumentNullException(nameof(msz));
+        }
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("pardonip")
+                || ctx.NameEquals("unbanip");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.BanUser | ChatUserPermissions.KickUser)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string? unbanAddrTarget = ctx.Args.FirstOrDefault();
+            if(string.IsNullOrWhiteSpace(unbanAddrTarget) || !IPAddress.TryParse(unbanAddrTarget, out IPAddress? unbanAddr)) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            unbanAddrTarget = unbanAddr.ToString();
+
+            Task.Run(async () => {
+                MisuzuBanInfo? banInfo = await Misuzu.CheckBanAsync(ipAddr: unbanAddrTarget);
+
+                if(banInfo?.IsBanned != true || banInfo.HasExpired) {
+                    ctx.Chat.SendTo(ctx.User, new KickBanNoRecordErrorPacket(unbanAddrTarget));
+                    return;
+                }
+
+                bool wasBanned = await Misuzu.RevokeBanAsync(banInfo, MisuzuClient.BanRevokeKind.RemoteAddress);
+                if(wasBanned)
+                    ctx.Chat.SendTo(ctx.User, new PardonResponsePacket(unbanAddrTarget));
+                else
+                    ctx.Chat.SendTo(ctx.User, new KickBanNoRecordErrorPacket(unbanAddrTarget));
+            }).Wait();
+        }
+    }
+}

SharpChat/Commands/PardonUserCommand.cs

@@ -0,0 +1,58 @@
+using SharpChat.Misuzu;
+using SharpChat.Packet;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace SharpChat.Commands {
+    public class PardonUserCommand : IChatCommand {
+        private readonly MisuzuClient Misuzu;
+
+        public PardonUserCommand(MisuzuClient msz) {
+            Misuzu = msz ?? throw new ArgumentNullException(nameof(msz));
+        }
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("pardon")
+                || ctx.NameEquals("unban");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.BanUser | ChatUserPermissions.KickUser)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            bool unbanUserTargetIsName = true;
+            string? unbanUserTarget = ctx.Args.FirstOrDefault();
+            if(string.IsNullOrWhiteSpace(unbanUserTarget)) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            ChatUser? unbanUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(unbanUserTarget));
+            if(unbanUser == null && long.TryParse(unbanUserTarget, out long unbanUserId)) {
+                unbanUserTargetIsName = false;
+                unbanUser = ctx.Chat.Users.FirstOrDefault(u => u.UserId == unbanUserId);
+            }
+
+            if(unbanUser != null)
+                unbanUserTarget = unbanUser.UserId.ToString();
+
+            Task.Run(async () => {
+                MisuzuBanInfo? banInfo = await Misuzu.CheckBanAsync(unbanUserTarget, userIdIsName: unbanUserTargetIsName);
+
+                if(banInfo?.IsBanned != true || banInfo.HasExpired) {
+                    ctx.Chat.SendTo(ctx.User, new KickBanNoRecordErrorPacket(unbanUserTarget));
+                    return;
+                }
+
+                bool wasBanned = await Misuzu.RevokeBanAsync(banInfo, MisuzuClient.BanRevokeKind.UserId);
+                if(wasBanned)
+                    ctx.Chat.SendTo(ctx.User, new PardonResponsePacket(unbanUserTarget));
+                else
+                    ctx.Chat.SendTo(ctx.User, new KickBanNoRecordErrorPacket(unbanUserTarget));
+            }).Wait();
+        }
+    }
+}

SharpChat/Commands/ShutdownRestartCommand.cs

@@ -0,0 +1,37 @@
+using SharpChat.Packet;
+using System;
+using System.Threading;
+
+namespace SharpChat.Commands {
+    public class ShutdownRestartCommand : IChatCommand {
+        private readonly ManualResetEvent WaitHandle;
+        private readonly Func<bool> ShutdownCheck;
+
+        public ShutdownRestartCommand(ManualResetEvent waitHandle, Func<bool> shutdownCheck) {
+            WaitHandle = waitHandle ?? throw new ArgumentNullException(nameof(waitHandle));
+            ShutdownCheck = shutdownCheck ?? throw new ArgumentNullException(nameof(shutdownCheck));
+        }
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("shutdown")
+                || ctx.NameEquals("restart");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(ctx.User.UserId != 1) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            if(!ShutdownCheck())
+                return;
+
+            if(ctx.NameEquals("restart"))
+                foreach(ChatConnection conn in ctx.Chat.Connections)
+                    conn.PrepareForRestart();
+
+            ctx.Chat.Update();
+            WaitHandle?.Set();
+        }
+    }
+}

SharpChat/Commands/UserAFKCommand.cs

@@ -0,0 +1,30 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class UserAFKCommand : IChatCommand {
+        private const string DEFAULT = "AFK";
+        private const int MAX_LENGTH = 5;
+
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("afk");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            string? statusText = ctx.Args.FirstOrDefault();
+            if(string.IsNullOrWhiteSpace(statusText))
+                statusText = DEFAULT;
+            else {
+                statusText = statusText.Trim();
+                if(statusText.Length > MAX_LENGTH)
+                    statusText = statusText[..MAX_LENGTH].Trim();
+            }
+
+            ctx.Chat.UpdateUser(
+                ctx.User,
+                status: ChatUserStatus.Away,
+                statusText: statusText
+            );
+        }
+    }
+}

SharpChat/Commands/UserNickCommand.cs

@@ -0,0 +1,54 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class UserNickCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("nick");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            bool setOthersNick = ctx.User.Can(ChatUserPermissions.SetOthersNickname);
+
+            if(!setOthersNick && !ctx.User.Can(ChatUserPermissions.SetOwnNickname)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            ChatUser? targetUser = null;
+            int offset = 0;
+
+            if(setOthersNick && long.TryParse(ctx.Args.FirstOrDefault(), out long targetUserId) && targetUserId > 0) {
+                targetUser = ctx.Chat.Users.FirstOrDefault(u => u.UserId == targetUserId);
+                ++offset;
+            }
+
+            targetUser ??= ctx.User;
+
+            if(ctx.Args.Length < offset) {
+                ctx.Chat.SendTo(ctx.User, new CommandFormatErrorPacket());
+                return;
+            }
+
+            string nickStr = string.Join('_', ctx.Args.Skip(offset))
+                .Replace("\n", string.Empty).Replace("\r", string.Empty)
+                .Replace("\f", string.Empty).Replace("\t", string.Empty)
+                .Replace(' ', '_').Trim();
+
+            if(nickStr == targetUser.UserName)
+                nickStr = string.Empty;
+            else if(nickStr.Length > 15)
+                nickStr = nickStr[..15];
+            else if(string.IsNullOrEmpty(nickStr))
+                nickStr = string.Empty;
+
+            if(!string.IsNullOrWhiteSpace(nickStr) && ctx.Chat.Users.Any(u => u.NameEquals(nickStr))) {
+                ctx.Chat.SendTo(ctx.User, new UserNameInUseErrorPacket(nickStr));
+                return;
+            }
+
+            string? previousName = targetUser == ctx.User ? (targetUser.NickName ?? targetUser.UserName) : null;
+            ctx.Chat.UpdateUser(targetUser, nickName: nickStr, silent: previousName == null);
+        }
+    }
+}

SharpChat/Commands/WhoCommand.cs

@@ -0,0 +1,40 @@
+using SharpChat.Packet;
+using System.Linq;
+
+namespace SharpChat.Commands {
+    public class WhoCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("who");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            string? channelName = ctx.Args.FirstOrDefault();
+
+            if(string.IsNullOrEmpty(channelName)) {
+                ctx.Chat.SendTo(ctx.User, new WhoServerResponsePacket(
+                    ctx.Chat.Users.Select(u => u.LegacyName).ToArray(),
+                    ctx.User.LegacyName
+                ));
+                return;
+            }
+
+            ChatChannel? channel = ctx.Chat.Channels.FirstOrDefault(c => c.NameEquals(channelName));
+
+            if(channel == null) {
+                ctx.Chat.SendTo(ctx.User, new ChannelNotFoundErrorPacket(channelName));
+                return;
+            }
+
+            if(channel.Rank > ctx.User.Rank || (channel.HasPassword && !ctx.User.Can(ChatUserPermissions.JoinAnyChannel))) {
+                ctx.Chat.SendTo(ctx.User, new WhoChannelNotFoundErrorPacket(channelName));
+                return;
+            }
+
+            ctx.Chat.SendTo(ctx.User, new WhoChannelResponsePacket(
+                channel.Name,
+                ctx.Chat.GetChannelUsers(channel).Select(user => user.LegacyName).ToArray(),
+                ctx.User.LegacyName
+            ));
+        }
+    }
+}

SharpChat/Commands/WhoisCommand.cs

@@ -0,0 +1,30 @@
+using SharpChat.Packet;
+using System.Linq;
+using System.Net;
+
+namespace SharpChat.Commands {
+    public class WhoisCommand : IChatCommand {
+        public bool IsMatch(ChatCommandContext ctx) {
+            return ctx.NameEquals("ip")
+                || ctx.NameEquals("whois");
+        }
+
+        public void Dispatch(ChatCommandContext ctx) {
+            if(!ctx.User.Can(ChatUserPermissions.SeeIPAddress)) {
+                ctx.Chat.SendTo(ctx.User, new CommandNotAllowedErrorPacket(ctx.Name));
+                return;
+            }
+
+            string ipUserStr = ctx.Args.FirstOrDefault() ?? string.Empty;
+            ChatUser? ipUser;
+
+            if(string.IsNullOrWhiteSpace(ipUserStr) || (ipUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(ipUserStr))) == null) {
+                ctx.Chat.SendTo(ctx.User, new UserNotFoundErrorPacket(ipUserStr));
+                return;
+            }
+
+            foreach(IPAddress ip in ctx.Chat.GetRemoteAddresses(ipUser))
+                ctx.Chat.SendTo(ctx.User, new WhoisResponsePacket(ipUser.UserName, ip.ToString()));
+        }
+    }
+}

SharpChat/Config/CachedValue.cs

@@ -0,0 +1,47 @@
+using System;
+
+namespace SharpChat.Config {
+    public class CachedValue<T> {
+        private IConfig Config { get; }
+        private string Name { get; }
+        private TimeSpan Lifetime { get; }
+        private T? Fallback { get; }
+        private object ConfigAccess { get; } = new();
+
+        private object? CurrentValue { get; set; }
+        private DateTimeOffset LastRead { get; set; }
+
+        public T? Value {
+            get {
+                lock(ConfigAccess) { // this lock doesn't really make sense since it doesn't affect other config calls
+                    DateTimeOffset now = DateTimeOffset.Now;
+                    if((now - LastRead) >= Lifetime) {
+                        LastRead = now;
+                        CurrentValue = Config.ReadValue(Name, Fallback);
+                        Logger.Debug($"Read {Name} ({CurrentValue})");
+                    }
+                }
+                return (T?)CurrentValue;
+            }
+        }
+
+        public static implicit operator T?(CachedValue<T> val) => val.Value;
+
+        public CachedValue(IConfig config, string name, TimeSpan lifetime, T? fallback) {
+            Config = config ?? throw new ArgumentNullException(nameof(config));
+            Name = name ?? throw new ArgumentNullException(nameof(name));
+            Lifetime = lifetime;
+            Fallback = fallback;
+            if(string.IsNullOrWhiteSpace(name))
+                throw new ArgumentException("Name cannot be empty.", nameof(name));
+        }
+
+        public void Refresh() {
+            LastRead = DateTimeOffset.MinValue;
+        }
+
+        public override string ToString() {
+            return Value?.ToString() ?? string.Empty;
+        }
+    }
+}

SharpChat/Config/ConfigExceptions.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace SharpChat.Config {
+    public abstract class ConfigException : Exception {
+        public ConfigException(string message) : base(message) { }
+        public ConfigException(string message, Exception ex) : base(message, ex) { }
+    }
+
+    public class ConfigLockException : ConfigException {
+        public ConfigLockException() : base("Unable to acquire lock for reading configuration.") { }
+    }
+
+    public class ConfigTypeException : ConfigException {
+        public ConfigTypeException(Exception ex) : base("Given type does not match the value in the configuration.", ex) { }
+    }
+}

SharpChat/Config/IConfig.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SharpChat.Config {
+    public interface IConfig : IDisposable {
+        /// <summary>
+        /// Creates a proxy object that forces all names to start with the given prefix.
+        /// </summary>
+        IConfig ScopeTo(string prefix);
+
+        /// <summary>
+        /// Reads a raw (string) value from the config.
+        /// </summary>
+        string? ReadValue(string name, string? fallback = null);
+
+        /// <summary>
+        /// Reads and casts value from the config.
+        /// </summary>
+        /// <exception cref="ConfigTypeException">Type conversion failed.</exception>
+        T? ReadValue<T>(string name, T? fallback = default);
+
+        /// <summary>
+        /// Reads and casts a value from the config. Returns fallback when type conversion fails.
+        /// </summary>
+        T? SafeReadValue<T>(string name, T fallback);
+
+        /// <summary>
+        /// Creates an object that caches the read value for a certain amount of time, avoiding disk reads for frequently used non-static values.
+        /// </summary>
+        CachedValue<T> ReadCached<T>(string name, T? fallback = default, TimeSpan? lifetime = null);
+    }
+}

SharpChat/Config/ScopedConfig.cs

@@ -0,0 +1,45 @@
+using System;
+
+namespace SharpChat.Config {
+    public class ScopedConfig : IConfig {
+        private IConfig Config { get; }
+        private string Prefix { get; }
+
+        public ScopedConfig(IConfig config, string prefix) {
+            Config = config ?? throw new ArgumentNullException(nameof(config));
+            Prefix = prefix ?? throw new ArgumentNullException(nameof(prefix));
+            if(string.IsNullOrWhiteSpace(prefix))
+                throw new ArgumentException("Prefix must exist.", nameof(prefix));
+            if(Prefix[^1] != ':')
+                Prefix += ':';
+        }
+
+        private string GetName(string name) {
+            return Prefix + name;
+        }
+
+        public string? ReadValue(string name, string? fallback = null) {
+            return Config.ReadValue(GetName(name), fallback);
+        }
+
+        public T? ReadValue<T>(string name, T? fallback = default) {
+            return Config.ReadValue(GetName(name), fallback);
+        }
+
+        public T? SafeReadValue<T>(string name, T fallback) {
+            return Config.SafeReadValue(GetName(name), fallback);
+        }
+
+        public IConfig ScopeTo(string prefix) {
+            return Config.ScopeTo(GetName(prefix));
+        }
+
+        public CachedValue<T> ReadCached<T>(string name, T? fallback = default, TimeSpan? lifetime = null) {
+            return Config.ReadCached(GetName(name), fallback, lifetime);
+        }
+
+        public void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+    }
+}

SharpChat/Config/StreamConfig.cs

@@ -0,0 +1,112 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+
+namespace SharpChat.Config {
+    public class StreamConfig : IConfig {
+        private Stream Stream { get; }
+        private StreamReader StreamReader { get; }
+        private Mutex Lock { get; }
+
+        private const int LOCK_TIMEOUT = 10000;
+
+        private static readonly TimeSpan CACHE_LIFETIME = TimeSpan.FromMinutes(15);
+
+        public StreamConfig(string fileName)
+            : this(new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite)) { }
+
+        public StreamConfig(Stream stream) {
+            Stream = stream ?? throw new ArgumentNullException(nameof(stream));
+            if(!Stream.CanRead)
+                throw new ArgumentException("Provided stream must be readable.", nameof(stream));
+            if(!Stream.CanSeek)
+                throw new ArgumentException("Provided stream must be seekable.", nameof(stream));
+            StreamReader = new StreamReader(stream, new UTF8Encoding(false), false);
+            Lock = new Mutex();
+        }
+
+        public string? ReadValue(string name, string? fallback = null) {
+            if(!Lock.WaitOne(LOCK_TIMEOUT)) // don't catch this, if this happens something is Very Wrong
+                throw new ConfigLockException();
+
+            try {
+                Stream.Seek(0, SeekOrigin.Begin);
+
+                string? line;
+                while((line = StreamReader.ReadLine()) != null) {
+                    if(string.IsNullOrWhiteSpace(line))
+                        continue;
+
+                    line = line.TrimStart();
+                    if(line.StartsWith(";") || line.StartsWith("#"))
+                        continue;
+
+                    string[] parts = line.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries);
+                    if(parts.Length < 2 || !string.Equals(parts[0], name))
+                        continue;
+
+                    return parts[1];
+                }
+            } finally {
+                Lock.ReleaseMutex();
+            }
+
+            return fallback;
+        }
+
+        public T? ReadValue<T>(string name, T? fallback = default) {
+            object? value = ReadValue(name);
+            if(value == null)
+                return fallback;
+
+            Type type = typeof(T);
+            if(value is string strVal) {
+                if(type == typeof(bool))
+                    value = !string.Equals(strVal, "0", StringComparison.InvariantCultureIgnoreCase)
+                        && !string.Equals(strVal, "false", StringComparison.InvariantCultureIgnoreCase);
+                else if(type == typeof(string[]))
+                    value = strVal.Split(' ');
+            }
+
+            try {
+                return (T)Convert.ChangeType(value, type);
+            } catch(InvalidCastException ex) {
+                throw new ConfigTypeException(ex);
+            }
+        }
+
+        public T? SafeReadValue<T>(string name, T fallback) {
+            try {
+                return ReadValue(name, fallback);
+            } catch(ConfigTypeException) {
+                return fallback;
+            }
+        }
+
+        public IConfig ScopeTo(string prefix) {
+            return new ScopedConfig(this, prefix);
+        }
+
+        public CachedValue<T> ReadCached<T>(string name, T? fallback = default, TimeSpan? lifetime = null) {
+            return new CachedValue<T>(this, name, lifetime ?? CACHE_LIFETIME, fallback);
+        }
+
+        private bool IsDisposed;
+        ~StreamConfig()
+            => DoDispose();
+        public void Dispose() {
+            DoDispose();
+            GC.SuppressFinalize(this);
+        }
+        private void DoDispose() {
+            if(IsDisposed)
+                return;
+            IsDisposed = true;
+
+            StreamReader.Dispose();
+            Stream.Dispose();
+            Lock.Dispose();
+        }
+    }
+}

SharpChat/Database.cs

@@ -1,230 +0,0 @@
-using MySqlConnector;
-using SharpChat.Events;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using System.Text.Json;
-
-namespace SharpChat {
-    public static partial class Database {
-        private static string ConnectionString = null;
-
-        public static bool HasDatabase
-            => !string.IsNullOrWhiteSpace(ConnectionString);
-
-        public static void ReadConfig() {
-            if(!File.Exists(@"mariadb.txt"))
-                return;
-            string[] config = File.ReadAllLines(@"mariadb.txt");
-            if (config.Length < 4)
-                return;
-            Init(config[0], config[1], config[2], config[3]);
-        }
-
-        public static void Init(string host, string username, string password, string database) {
-            ConnectionString = new MySqlConnectionStringBuilder {
-                Server = host,
-                UserID = username,
-                Password = password,
-                Database = database,
-                OldGuids = false,
-                TreatTinyAsBoolean = false,
-                CharacterSet = @"utf8mb4",
-                SslMode = MySqlSslMode.None,
-                ForceSynchronous = true,
-                ConnectionTimeout = 5,
-            }.ToString();
-            RunMigrations();
-        }
-
-        public static void Deinit() {
-            ConnectionString = null;
-        }
-
-        private static MySqlConnection GetConnection() {
-            if (!HasDatabase)
-                return null;
-
-            MySqlConnection conn = new MySqlConnection(ConnectionString);
-            conn.Open();
-
-            return conn;
-        }
-
-        private static int RunCommand(string command, params MySqlParameter[] parameters) {
-            if (!HasDatabase)
-                return 0;
-
-            try {
-                using MySqlConnection conn = GetConnection();
-                using MySqlCommand cmd = conn.CreateCommand();
-                if (parameters?.Length > 0)
-                    cmd.Parameters.AddRange(parameters);
-                cmd.CommandText = command;
-                return cmd.ExecuteNonQuery();
-            } catch (MySqlException ex) {
-                Logger.Write(ex);
-            }
-
-            return 0;
-        }
-
-        private static MySqlDataReader RunQuery(string command, params MySqlParameter[] parameters) {
-            if (!HasDatabase)
-                return null;
-
-            try {
-                MySqlConnection conn = GetConnection();
-                MySqlCommand cmd = conn.CreateCommand();
-                if (parameters?.Length > 0)
-                    cmd.Parameters.AddRange(parameters);
-                cmd.CommandText = command;
-                return cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
-            } catch(MySqlException ex) {
-                Logger.Write(ex);
-            }
-
-            return null;
-        }
-
-        private static object RunQueryValue(string command, params MySqlParameter[] parameters) {
-            if (!HasDatabase)
-                return null;
-
-            try {
-                using MySqlConnection conn = GetConnection();
-                using MySqlCommand cmd = conn.CreateCommand();
-                if (parameters?.Length > 0)
-                    cmd.Parameters.AddRange(parameters);
-                cmd.CommandText = command;
-                cmd.Prepare();
-                return cmd.ExecuteScalar();
-            } catch(MySqlException ex) {
-                Logger.Write(ex);
-            }
-
-            return null;
-        }
-
-        private const long ID_EPOCH = 1588377600000;
-        private static int IdCounter = 0;
-
-        public static long GenerateId() {
-            if (IdCounter > 200)
-                IdCounter = 0;
-
-            long id = 0;
-            id |= (DateTimeOffset.Now.ToUnixTimeMilliseconds() - ID_EPOCH) << 8;
-            id |= (ushort)(++IdCounter);
-            return id;
-        }
-
-        public static void LogEvent(IChatEvent evt) {
-            if(evt.SequenceId < 1)
-                evt.SequenceId = GenerateId();
-
-            RunCommand(
-                @"INSERT INTO `sqc_events` (`event_id`, `event_created`, `event_type`, `event_target`, `event_flags`, `event_data`"
-                + @", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`)"
-                + @" VALUES (@id, FROM_UNIXTIME(@created), @type, @target, @flags, @data"
-                + @", @sender, @sender_name, @sender_colour, @sender_rank, @sender_nick, @sender_perms)",
-                new MySqlParameter(@"id", evt.SequenceId),
-                new MySqlParameter(@"created", evt.DateTime.ToUnixTimeSeconds()),
-                new MySqlParameter(@"type", evt.GetType().FullName),
-                new MySqlParameter(@"target", evt.Target.TargetName),
-                new MySqlParameter(@"flags", (byte)evt.Flags),
-                new MySqlParameter(@"data", JsonSerializer.SerializeToUtf8Bytes(evt, evt.GetType())),
-                new MySqlParameter(@"sender", evt.Sender?.UserId < 1 ? null : (long?)evt.Sender.UserId),
-                new MySqlParameter(@"sender_name", evt.Sender?.Username),
-                new MySqlParameter(@"sender_colour", evt.Sender?.Colour.Raw),
-                new MySqlParameter(@"sender_rank", evt.Sender?.Rank),
-                new MySqlParameter(@"sender_nick", evt.Sender?.Nickname),
-                new MySqlParameter(@"sender_perms", evt.Sender?.Permissions)
-            );
-        }
-
-        public static void DeleteEvent(IChatEvent evt) {
-            RunCommand(
-                @"UPDATE IGNORE `sqc_events` SET `event_deleted` = NOW() WHERE `event_id` = @id AND `event_deleted` IS NULL",
-                new MySqlParameter(@"id", evt.SequenceId)
-            );
-        }
-
-        private static IChatEvent ReadEvent(MySqlDataReader reader, IPacketTarget target = null) {
-            Type evtType = Type.GetType(Encoding.ASCII.GetString((byte[])reader[@"event_type"]));
-            IChatEvent evt = JsonSerializer.Deserialize(Encoding.ASCII.GetString((byte[])reader[@"event_data"]), evtType) as IChatEvent;
-            evt.SequenceId = reader.GetInt64(@"event_id");
-            evt.Target = target;
-            evt.TargetName = target?.TargetName ?? Encoding.ASCII.GetString((byte[])reader[@"event_target"]);
-            evt.Flags = (ChatMessageFlags)reader.GetByte(@"event_flags");
-            evt.DateTime = DateTimeOffset.FromUnixTimeSeconds(reader.GetInt32(@"event_created"));
-
-            if (!reader.IsDBNull(reader.GetOrdinal(@"event_sender"))) {
-                evt.Sender = new BasicUser {
-                    UserId = reader.GetInt64(@"event_sender"),
-                    Username = reader.GetString(@"event_sender_name"),
-                    Colour = new ChatColour(reader.GetInt32(@"event_sender_colour")),
-                    Rank = reader.GetInt32(@"event_sender_rank"),
-                    Nickname = reader.IsDBNull(reader.GetOrdinal(@"event_sender_nick")) ? null : reader.GetString(@"event_sender_nick"),
-                    Permissions = (ChatUserPermissions)reader.GetInt32(@"event_sender_perms")
-                };
-            }
-
-            return evt;
-        }
-
-        public static IEnumerable<IChatEvent> GetEvents(IPacketTarget target, int amount, int offset) {
-            List<IChatEvent> events = new List<IChatEvent>();
-
-            try {
-                using MySqlDataReader reader = RunQuery(
-                    @"SELECT `event_id`, `event_type`, `event_flags`, `event_data`"
-                    + @", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
-                    + @", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
-                    + @" FROM `sqc_events`"
-                    + @" WHERE `event_deleted` IS NULL AND `event_target` = @target"
-                    + @" AND `event_id` > @offset"
-                    + @" ORDER BY `event_id` DESC"
-                    + @" LIMIT @amount",
-                    new MySqlParameter(@"target", target.TargetName),
-                    new MySqlParameter(@"amount", amount),
-                    new MySqlParameter(@"offset", offset)
-                );
-
-                while (reader.Read()) {
-                    IChatEvent evt = ReadEvent(reader, target);
-                    if (evt != null)
-                        events.Add(evt);
-                }
-            } catch(MySqlException ex) {
-                Logger.Write(ex);
-            }
-
-            return events;
-        }
-
-        public static IChatEvent GetEvent(long seqId) {
-            try {
-                using MySqlDataReader reader = RunQuery(
-                    @"SELECT `event_id`, `event_type`, `event_flags`, `event_data`, `event_target`"
-                    + @", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
-                    + @", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
-                    + @" FROM `sqc_events`"
-                    + @" WHERE `event_id` = @id",
-                    new MySqlParameter(@"id", seqId)
-                );
-
-                while (reader.Read()) {
-                    IChatEvent evt = ReadEvent(reader);
-                    if (evt != null)
-                        return evt;
-                }
-            } catch(MySqlException ex) {
-                Logger.Write(ex);
-            }
-
-            return null;
-        }
-    }
-}

SharpChat/Database_Migrations.cs

@@ -1,60 +0,0 @@
-using MySqlConnector;
-using System;
-
-namespace SharpChat {
-    public static partial class Database {
-        private static void DoMigration(string name, Action action) {
-            bool done = (long)RunQueryValue(
-                @"SELECT COUNT(*) FROM `sqc_migrations` WHERE `migration_name` = @name",
-                new MySqlParameter(@"name", name)
-            ) > 0;
-            if (!done) {
-                Logger.Write($@"Running migration '{name}'...");
-                action();
-                RunCommand(
-                    @"INSERT INTO `sqc_migrations` (`migration_name`) VALUES (@name)",
-                    new MySqlParameter(@"name", name)
-                );
-            }
-        }
-
-        private static void RunMigrations() {
-            RunCommand(
-                @"CREATE TABLE IF NOT EXISTS `sqc_migrations` ("
-                + @"`migration_name` VARCHAR(255) NOT NULL,"
-                + @"`migration_completed` TIMESTAMP NOT NULL DEFAULT current_timestamp(),"
-                + @"UNIQUE INDEX `migration_name` (`migration_name`),"
-                + @"INDEX `migration_completed` (`migration_completed`)"
-                + @") COLLATE='utf8mb4_unicode_ci' ENGINE=InnoDB;"
-            );
-
-            DoMigration(@"create_events_table", CreateEventsTable);
-        }
-
-        private static void CreateEventsTable() {
-            RunCommand(
-                @"CREATE TABLE `sqc_events` ("
-                + @"`event_id` BIGINT(20) NOT NULL,"
-                + @"`event_sender` BIGINT(20) UNSIGNED NULL DEFAULT NULL,"
-                + @"`event_sender_name` VARCHAR(255) NULL DEFAULT NULL,"
-                + @"`event_sender_colour` INT(11) NULL DEFAULT NULL,"
-                + @"`event_sender_rank` INT(11) NULL DEFAULT NULL,"
-                + @"`event_sender_nick` VARCHAR(255) NULL DEFAULT NULL,"
-                + @"`event_sender_perms` INT(11) NULL DEFAULT NULL,"
-                + @"`event_created` TIMESTAMP NOT NULL DEFAULT current_timestamp(),"
-                + @"`event_deleted` TIMESTAMP NULL DEFAULT NULL,"
-                + @"`event_type` VARBINARY(255) NOT NULL,"
-                + @"`event_target` VARBINARY(255) NOT NULL,"
-                + @"`event_flags` TINYINT(3) UNSIGNED NOT NULL,"
-                + @"`event_data` BLOB NULL DEFAULT NULL,"
-                + @"PRIMARY KEY (`event_id`),"
-                + @"INDEX `event_target` (`event_target`),"
-                + @"INDEX `event_type` (`event_type`),"
-                + @"INDEX `event_sender` (`event_sender`),"
-                + @"INDEX `event_datetime` (`event_created`),"
-                + @"INDEX `event_deleted` (`event_deleted`)"
-                + @") COLLATE='utf8mb4_unicode_ci' ENGINE=InnoDB;"
-            );
-        }
-    }
-}

SharpChat/EventStorage/IEventStorage.cs

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+
+namespace SharpChat.EventStorage
+{
+    public interface IEventStorage {
+        void AddEvent(
+            long id, string type,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        );
+        void AddEvent(
+            long id, string type,
+            string? channelName,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        );
+        void AddEvent(
+            long id, string type,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        );
+        void AddEvent(
+            long id, string type,
+            string? channelName,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        );
+
+        long AddEvent(string type, ChatUser user, ChatChannel channel, object? data = null, StoredEventFlags flags = StoredEventFlags.None);
+        void RemoveEvent(StoredEventInfo evt);
+        StoredEventInfo? GetEvent(long seqId);
+        IEnumerable<StoredEventInfo> GetChannelEventLog(string channelName, int amount = 20, int offset = 0);
+    }
+}

SharpChat/EventStorage/MariaDBEventStorage.cs

@@ -0,0 +1,183 @@
+using MySqlConnector;
+using System;
+using System.Collections.Generic;
+using System.Dynamic;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Channels;
+
+namespace SharpChat.EventStorage
+{
+    public partial class MariaDBEventStorage : IEventStorage {
+        private string ConnectionString { get; }
+
+        public MariaDBEventStorage(string connString) {
+            ConnectionString = connString ?? throw new ArgumentNullException(nameof(connString));
+        }
+
+        public void AddEvent(
+            long id, string type,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, null, 0, null, ChatColour.None, 0, null, 0, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            string? channelName,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, channelName, 0, null, ChatColour.None, 0, null, 0, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, null, senderId, senderName, senderColour, senderRank, senderNick, senderPerms, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            string? channelName,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            if(type == null)
+                throw new ArgumentNullException(nameof(type));
+
+            RunCommand(
+                "INSERT INTO `sqc_events` (`event_id`, `event_created`, `event_type`, `event_target`, `event_flags`, `event_data`"
+                + ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`)"
+                + " VALUES (@id, NOW(), @type, @target, @flags, @data"
+                + ", @sender, @sender_name, @sender_colour, @sender_rank, @sender_nick, @sender_perms)",
+                new MySqlParameter("id", id),
+                new MySqlParameter("type", type),
+                new MySqlParameter("target", string.IsNullOrWhiteSpace(channelName) ? null : channelName),
+                new MySqlParameter("flags", (byte)flags),
+                new MySqlParameter("data", data == null ? "{}" : JsonSerializer.SerializeToUtf8Bytes(data)),
+                new MySqlParameter("sender", senderId < 1 ? null : senderId),
+                new MySqlParameter("sender_name", senderName),
+                new MySqlParameter("sender_colour", senderColour.ToMisuzu()),
+                new MySqlParameter("sender_rank", senderRank),
+                new MySqlParameter("sender_nick", string.IsNullOrWhiteSpace(senderNick) ? null : senderNick),
+                new MySqlParameter("sender_perms", senderPerms)
+            );
+        }
+
+        public long AddEvent(string type, ChatUser user, ChatChannel channel, object? data = null, StoredEventFlags flags = StoredEventFlags.None) {
+            if(type == null)
+                throw new ArgumentNullException(nameof(type));
+
+            long id = SharpId.Next();
+
+            AddEvent(
+                id, type,
+                channel?.Name,
+                user?.UserId ?? 0,
+                user?.UserName ?? string.Empty,
+                user?.Colour ?? ChatColour.None,
+                user?.Rank ?? 0,
+                user?.NickName,
+                user?.Permissions ?? 0,
+                data,
+                flags
+            );
+
+            return id;
+        }
+
+        public StoredEventInfo? GetEvent(long seqId) {
+            try {
+                using MySqlDataReader? reader = RunQuery(
+                    "SELECT `event_id`, `event_type`, `event_flags`, `event_data`, `event_target`"
+                    + ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
+                    + ", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
+                    + ", UNIX_TIMESTAMP(`event_deleted`) AS `event_deleted`"
+                    + " FROM `sqc_events`"
+                    + " WHERE `event_id` = @id",
+                    new MySqlParameter("id", seqId)
+                );
+
+                if(reader != null)
+                    while(reader.Read()) {
+                        StoredEventInfo evt = ReadEvent(reader);
+                        if(evt != null)
+                            return evt;
+                    }
+            } catch(MySqlException ex) {
+                Logger.Write(ex);
+            }
+
+            return null;
+        }
+
+        private static StoredEventInfo ReadEvent(MySqlDataReader reader) {
+            return new StoredEventInfo(
+                reader.GetInt64("event_id"),
+                Encoding.ASCII.GetString((byte[])reader["event_type"]),
+                reader.IsDBNull(reader.GetOrdinal("event_sender")) ? null : new ChatUser(
+                    reader.GetInt64("event_sender"),
+                    reader.IsDBNull(reader.GetOrdinal("event_sender_name")) ? string.Empty : reader.GetString("event_sender_name"),
+                    ChatColour.FromMisuzu(reader.GetInt32("event_sender_colour")),
+                    reader.GetInt32("event_sender_rank"),
+                    (ChatUserPermissions)reader.GetInt32("event_sender_perms"),
+                    reader.IsDBNull(reader.GetOrdinal("event_sender_nick")) ? null : reader.GetString("event_sender_nick")
+                ),
+                DateTimeOffset.FromUnixTimeSeconds(reader.GetInt32("event_created")),
+                reader.IsDBNull(reader.GetOrdinal("event_deleted")) ? null : DateTimeOffset.FromUnixTimeSeconds(reader.GetInt32("event_deleted")),
+                reader.IsDBNull(reader.GetOrdinal("event_target")) ? null : Encoding.ASCII.GetString((byte[])reader["event_target"]),
+                JsonDocument.Parse(Encoding.ASCII.GetString((byte[])reader["event_data"])),
+                (StoredEventFlags)reader.GetByte("event_flags")
+            );
+        }
+
+        public IEnumerable<StoredEventInfo> GetChannelEventLog(string channelName, int amount = 20, int offset = 0) {
+            List<StoredEventInfo> events = new();
+
+            try {
+                using MySqlDataReader? reader = RunQuery(
+                    "SELECT `event_id`, `event_type`, `event_flags`, `event_data`, `event_target`"
+                    + ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
+                    + ", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
+                    + ", UNIX_TIMESTAMP(`event_deleted`) AS `event_deleted`"
+                    + " FROM `sqc_events`"
+                    + " WHERE `event_deleted` IS NULL AND (`event_target` = @target OR `event_target` IS NULL)"
+                    + " AND `event_id` > @offset"
+                    + " ORDER BY `event_id` DESC"
+                    + " LIMIT @amount",
+                    new MySqlParameter("target", channelName),
+                    new MySqlParameter("amount", amount),
+                    new MySqlParameter("offset", offset)
+                );
+
+                if(reader != null)
+                    while(reader.Read()) {
+                        StoredEventInfo evt = ReadEvent(reader);
+                        if(evt != null)
+                            events.Add(evt);
+                    }
+            } catch(MySqlException ex) {
+                Logger.Write(ex);
+            }
+
+            events.Reverse();
+
+            return events;
+        }
+
+        public void RemoveEvent(StoredEventInfo evt) {
+            if(evt == null)
+                throw new ArgumentNullException(nameof(evt));
+            RunCommand(
+                "UPDATE IGNORE `sqc_events` SET `event_deleted` = NOW() WHERE `event_id` = @id AND `event_deleted` IS NULL",
+                new MySqlParameter("id", evt.Id)
+            );
+        }
+    }
+}

SharpChat/EventStorage/MariaDBEventStorage_Database.cs

@@ -0,0 +1,82 @@
+using MySqlConnector;
+using SharpChat.Config;
+
+namespace SharpChat.EventStorage {
+    public partial class MariaDBEventStorage {
+        public static string BuildConnString(IConfig config) {
+            return BuildConnString(
+                config.ReadValue("host", "localhost") ?? string.Empty,
+                config.ReadValue("user") ?? string.Empty,
+                config.ReadValue("pass") ?? string.Empty,
+                config.ReadValue("db", "sharpchat") ?? string.Empty
+            );
+        }
+
+        public static string BuildConnString(string host, string username, string password, string database) {
+            return new MySqlConnectionStringBuilder {
+                Server = host,
+                UserID = username,
+                Password = password,
+                Database = database,
+                OldGuids = false,
+                TreatTinyAsBoolean = false,
+                CharacterSet = "utf8mb4",
+                SslMode = MySqlSslMode.None,
+                ForceSynchronous = true,
+                ConnectionTimeout = 5,
+            }.ToString();
+        }
+
+        private MySqlConnection GetConnection() {
+            MySqlConnection conn = new(ConnectionString);
+            conn.Open();
+            return conn;
+        }
+
+        private int RunCommand(string command, params MySqlParameter[] parameters) {
+            try {
+                using MySqlConnection conn = GetConnection();
+                using MySqlCommand cmd = conn.CreateCommand();
+                if(parameters?.Length > 0)
+                    cmd.Parameters.AddRange(parameters);
+                cmd.CommandText = command;
+                return cmd.ExecuteNonQuery();
+            } catch(MySqlException ex) {
+                Logger.Write(ex);
+            }
+
+            return 0;
+        }
+
+        private MySqlDataReader? RunQuery(string command, params MySqlParameter[] parameters) {
+            try {
+                MySqlConnection conn = GetConnection();
+                MySqlCommand cmd = conn.CreateCommand();
+                if(parameters?.Length > 0)
+                    cmd.Parameters.AddRange(parameters);
+                cmd.CommandText = command;
+                return cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
+            } catch(MySqlException ex) {
+                Logger.Write(ex);
+            }
+
+            return null;
+        }
+
+        private object? RunQueryValue(string command, params MySqlParameter[] parameters) {
+            try {
+                using MySqlConnection conn = GetConnection();
+                using MySqlCommand cmd = conn.CreateCommand();
+                if(parameters?.Length > 0)
+                    cmd.Parameters.AddRange(parameters);
+                cmd.CommandText = command;
+                cmd.Prepare();
+                return cmd.ExecuteScalar();
+            } catch(MySqlException ex) {
+                Logger.Write(ex);
+            }
+
+            return null;
+        }
+    }
+}

SharpChat/EventStorage/MariaDBEventStorage_Migrations.cs

@@ -0,0 +1,77 @@
+using MySqlConnector;
+using System;
+
+namespace SharpChat.EventStorage {
+    public partial class MariaDBEventStorage {
+        private void DoMigration(string name, Action action) {
+            bool done = (long?)RunQueryValue(
+                "SELECT COUNT(*) FROM `sqc_migrations` WHERE `migration_name` = @name",
+                new MySqlParameter("name", name)
+            ) > 0;
+            if(!done) {
+                Logger.Write($"Running migration '{name}'...");
+                action();
+                RunCommand(
+                    "INSERT INTO `sqc_migrations` (`migration_name`) VALUES (@name)",
+                    new MySqlParameter("name", name)
+                );
+            }
+        }
+
+        public void RunMigrations() {
+            RunCommand(
+                "CREATE TABLE IF NOT EXISTS `sqc_migrations` ("
+                + "`migration_name` VARCHAR(255) NOT NULL,"
+                + "`migration_completed` TIMESTAMP NOT NULL DEFAULT current_timestamp(),"
+                + "UNIQUE INDEX `migration_name` (`migration_name`),"
+                + "INDEX `migration_completed` (`migration_completed`)"
+                + ") COLLATE='utf8mb4_unicode_ci' ENGINE=InnoDB;"
+            );
+
+            DoMigration("create_events_table", CreateEventsTable);
+            DoMigration("allow_null_target", AllowNullTarget);
+            DoMigration("update_event_type_names", UpdateEventTypeNames);
+        }
+
+        private void UpdateEventTypeNames() {
+            RunCommand(@"UPDATE sqc_events SET event_type = ""msg:add"" WHERE event_type = ""SharpChat.Events.ChatMessage""");
+            RunCommand(@"UPDATE sqc_events SET event_type = ""user:connect"" WHERE event_type = ""SharpChat.Events.UserConnectEvent""");
+            RunCommand(@"UPDATE sqc_events SET event_type = ""user:disconnect"" WHERE event_type = ""SharpChat.Events.UserDisconnectEvent""");
+            RunCommand(@"UPDATE sqc_events SET event_type = ""chan:join"" WHERE event_type = ""SharpChat.Events.UserChannelJoinEvent""");
+            RunCommand(@"UPDATE sqc_events SET event_type = ""chan:leave"" WHERE event_type = ""SharpChat.Events.UserChannelLeaveEvent""");
+        }
+
+        private void AllowNullTarget() {
+            RunCommand(
+                "ALTER TABLE `sqc_events`"
+                + " CHANGE COLUMN `event_target` `event_target` VARBINARY(255) NULL AFTER `event_type`;"
+            );
+        }
+
+        private void CreateEventsTable() {
+            RunCommand(
+                "CREATE TABLE `sqc_events` ("
+                + "`event_id` BIGINT(20) NOT NULL,"
+                + "`event_sender` BIGINT(20) UNSIGNED NULL DEFAULT NULL,"
+                + "`event_sender_name` VARCHAR(255) NULL DEFAULT NULL,"
+                + "`event_sender_colour` INT(11) NULL DEFAULT NULL,"
+                + "`event_sender_rank` INT(11) NULL DEFAULT NULL,"
+                + "`event_sender_nick` VARCHAR(255) NULL DEFAULT NULL,"
+                + "`event_sender_perms` INT(11) NULL DEFAULT NULL,"
+                + "`event_created` TIMESTAMP NOT NULL DEFAULT current_timestamp(),"
+                + "`event_deleted` TIMESTAMP NULL DEFAULT NULL,"
+                + "`event_type` VARBINARY(255) NOT NULL,"
+                + "`event_target` VARBINARY(255) NOT NULL,"
+                + "`event_flags` TINYINT(3) UNSIGNED NOT NULL,"
+                + "`event_data` BLOB NULL DEFAULT NULL,"
+                + "PRIMARY KEY (`event_id`),"
+                + "INDEX `event_target` (`event_target`),"
+                + "INDEX `event_type` (`event_type`),"
+                + "INDEX `event_sender` (`event_sender`),"
+                + "INDEX `event_datetime` (`event_created`),"
+                + "INDEX `event_deleted` (`event_deleted`)"
+                + ") COLLATE='utf8mb4_unicode_ci' ENGINE=InnoDB;"
+            );
+        }
+    }
+}

SharpChat/EventStorage/StoredEventFlags.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace SharpChat.EventStorage
+{
+    [Flags]
+    public enum StoredEventFlags
+    {
+        None = 0,
+        Action = 1,
+        Broadcast = 1 << 1,
+        Log = 1 << 2,
+        Private = 1 << 3,
+    }
+}

SharpChat/EventStorage/StoredEventInfo.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Text.Json;
+
+namespace SharpChat.EventStorage {
+    public class StoredEventInfo {
+        public long Id { get; set; }
+        public string Type { get; set; }
+        public ChatUser? Sender { get; set; }
+        public DateTimeOffset Created { get; set; }
+        public DateTimeOffset? Deleted { get; set; }
+        public string? ChannelName { get; set; }
+        public StoredEventFlags Flags { get; set; }
+        public JsonDocument Data { get; set; }
+
+        public StoredEventInfo(
+            long id,
+            string type,
+            ChatUser? sender,
+            DateTimeOffset created,
+            DateTimeOffset? deleted,
+            string? channelName,
+            JsonDocument data,
+            StoredEventFlags flags
+        ) {
+            Id = id;
+            Type = type;
+            Sender = sender;
+            Created = created;
+            Deleted = deleted;
+            ChannelName = channelName;
+            Data = data;
+            Flags = flags;
+        }
+    }
+}

SharpChat/EventStorage/VirtualEventStorage.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+
+namespace SharpChat.EventStorage {
+    public class VirtualEventStorage : IEventStorage {
+        private readonly Dictionary<long, StoredEventInfo> Events = new();
+
+        public void AddEvent(
+            long id, string type,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, null, 0, null, ChatColour.None, 0, null, 0, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            string? channelName,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, channelName, 0, null, ChatColour.None, 0, null, 0, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            AddEvent(id, type, null, senderId, senderName, senderColour, senderRank, senderNick, senderPerms, data, flags);
+        }
+
+        public void AddEvent(
+            long id, string type,
+            string? channelName,
+            long senderId, string? senderName, ChatColour senderColour, int senderRank, string? senderNick, ChatUserPermissions senderPerms,
+            object? data = null,
+            StoredEventFlags flags = StoredEventFlags.None
+        ) {
+            if(type == null)
+                throw new ArgumentNullException(nameof(type));
+
+            // VES is meant as an emergency fallback but this is something else
+            JsonDocument hack = JsonDocument.Parse(data == null ? "{}" : JsonSerializer.Serialize(data));
+            Events.Add(id, new(id, type, senderId < 1 ? null : new ChatUser(
+                senderId,
+                senderName,
+                senderColour,
+                senderRank,
+                senderPerms,
+                senderNick
+            ), DateTimeOffset.Now, null, channelName, hack, flags));
+        }
+
+        public long AddEvent(string type, ChatUser user, ChatChannel channel, object? data = null, StoredEventFlags flags = StoredEventFlags.None) {
+            if(type == null)
+                throw new ArgumentNullException(nameof(type));
+
+            long id = SharpId.Next();
+
+            AddEvent(
+                id, type,
+                channel?.Name,
+                user?.UserId ?? 0,
+                user?.UserName,
+                user?.Colour ?? ChatColour.None,
+                user?.Rank ?? 0,
+                user?.NickName,
+                user?.Permissions ?? 0,
+                data,
+                flags
+            );
+
+            return id;
+        }
+
+        public StoredEventInfo? GetEvent(long seqId) {
+            return Events.TryGetValue(seqId, out StoredEventInfo? evt) ? evt : null;
+        }
+
+        public void RemoveEvent(StoredEventInfo evt) {
+            Events.Remove(evt.Id);
+        }
+
+        public IEnumerable<StoredEventInfo> GetChannelEventLog(string channelName, int amount = 20, int offset = 0) {
+            IEnumerable<StoredEventInfo> subset = Events.Values.Where(ev => ev.ChannelName == channelName);
+
+            int start = subset.Count() - offset - amount;
+            if(start < 0) {
+                amount += start;
+                start = 0;
+            }
+
+            return subset.Skip(start).Take(amount).ToArray();
+        }
+    }
+}

SharpChat/Events/ChatMessage.cs

@@ -1,31 +0,0 @@
-using System;
-using System.Text.Json.Serialization;
-
-namespace SharpChat.Events {
-    public class ChatMessage : IChatMessage {
-        [JsonIgnore]
-        public BasicUser Sender { get; set; }
-
-        [JsonIgnore]
-        public IPacketTarget Target { get; set; }
-
-        [JsonIgnore]
-        public string TargetName { get; set; }
-
-        [JsonIgnore]
-        public DateTimeOffset DateTime { get; set; }
-
-        [JsonIgnore]
-        public ChatMessageFlags Flags { get; set; } = ChatMessageFlags.None;
-
-        [JsonIgnore]
-        public long SequenceId { get; set; }
-
-        [JsonPropertyName(@"text")]
-        public string Text { get; set; }
-
-        public static string PackBotMessage(int type, string id, params string[] parts) {
-            return type.ToString() + '\f' + id + '\f' + string.Join('\f', parts);
-        }
-    }
-}

SharpChat/Events/IChatEvent.cs

@@ -1,25 +1,10 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
 
 namespace SharpChat.Events {
-    [Flags]
-    public enum ChatMessageFlags {
-        None = 0,
-        Action = 1,
-        Broadcast = 1 << 1,
-        Log = 1 << 2,
-        Private = 1 << 3,
-    }
-
     public interface IChatEvent {
-        DateTimeOffset DateTime { get; set; }
-        BasicUser Sender { get; set; }
-        IPacketTarget Target { get; set; }
-        string TargetName { get; set; }
-        ChatMessageFlags Flags { get; set; }
-        long SequenceId { get; set; }
-    }
-
-    public interface IChatMessage : IChatEvent {
-        string Text { get; }
     }
 }

SharpChat/Events/MessageCreateEvent.cs

@@ -0,0 +1,94 @@
+using System;
+
+namespace SharpChat.Events {
+    public class MessageCreateEvent : IChatEvent {
+        public long MessageId { get; }
+        public string? ChannelName { get; }
+        public long SenderId { get; }
+        public string? SenderName { get; }
+        public ChatColour SenderColour { get; }
+        public int SenderRank { get; }
+        public string? SenderNickName { get; }
+        public ChatUserPermissions SenderPerms { get; }
+        public DateTimeOffset MessageCreated { get; }
+        public string MessageText { get; }
+        public bool IsPrivate { get; }
+        public bool IsAction { get; }
+        public bool IsBroadcast { get; }
+
+        public MessageCreateEvent(
+            long msgId,
+            string? channelName,
+            long senderId,
+            string? senderName,
+            ChatColour senderColour,
+            int senderRank,
+            string? senderNickName,
+            ChatUserPermissions senderPerms,
+            DateTimeOffset msgCreated,
+            string msgText,
+            bool isPrivate,
+            bool isAction,
+            bool isBroadcast
+        ) {
+            MessageId = msgId;
+            ChannelName = channelName;
+            SenderId = senderId;
+            SenderName = senderName;
+            SenderColour = senderColour;
+            SenderRank = senderRank;
+            SenderNickName = senderNickName;
+            SenderPerms = senderPerms;
+            MessageCreated = msgCreated;
+            MessageText = msgText;
+            IsPrivate = isPrivate;
+            IsAction = isAction;
+            IsBroadcast = isBroadcast;
+        }
+
+        public MessageCreateEvent(
+            long msgId,
+            string? channelName,
+            ChatUser? sender,
+            DateTimeOffset msgCreated,
+            string msgText,
+            bool isPrivate,
+            bool isAction,
+            bool isBroadcast
+        ) : this(
+            msgId,
+            channelName,
+            sender?.UserId ?? -1,
+            sender?.UserName ?? null,
+            sender?.Colour ?? ChatColour.None,
+            sender?.Rank ?? 0,
+            sender?.NickName ?? null,
+            sender?.Permissions ?? 0,
+            msgCreated,
+            msgText,
+            isPrivate,
+            isAction,
+            isBroadcast
+        ) { }
+
+        public MessageCreateEvent(
+            long msgId,
+            ChatChannel channel,
+            ChatUser sender,
+            DateTimeOffset msgCreated,
+            string msgText,
+            bool isPrivate,
+            bool isAction,
+            bool isBroadcast
+        ) : this(
+            msgId,
+            channel?.Name ?? null,
+            sender,
+            msgCreated,
+            msgText,
+            isPrivate,
+            isAction,
+            isBroadcast
+        ) { }
+    }
+}

SharpChat/Events/UserChannelJoinEvent.cs

@@ -1,32 +0,0 @@
-using System;
-using System.Text.Json.Serialization;
-
-namespace SharpChat.Events {
-    public class UserChannelJoinEvent : IChatEvent {
-        [JsonIgnore]
-        public DateTimeOffset DateTime { get; set; }
-
-        [JsonIgnore]
-        public BasicUser Sender { get; set; }
-
-        [JsonIgnore]
-        public IPacketTarget Target { get; set; }
-
-        [JsonIgnore]
-        public string TargetName { get; set; }
-
-        [JsonIgnore]
-        public ChatMessageFlags Flags { get; set; } = ChatMessageFlags.Log;
-
-        [JsonIgnore]
-        public long SequenceId { get; set; }
-
-        public UserChannelJoinEvent() { }
-        public UserChannelJoinEvent(DateTimeOffset joined, BasicUser user, IPacketTarget target) {
-            DateTime = joined;
-            Sender = user;
-            Target = target;
-            TargetName = target?.TargetName;
-        }
-    }
-}

SharpChat/Events/UserChannelLeaveEvent.cs

@@ -1,32 +0,0 @@
-using System;
-using System.Text.Json.Serialization;
-
-namespace SharpChat.Events {
-    public class UserChannelLeaveEvent : IChatEvent {
-        [JsonIgnore]
-        public DateTimeOffset DateTime { get; set; }
-
-        [JsonIgnore]
-        public BasicUser Sender { get; set; }
-
-        [JsonIgnore]
-        public IPacketTarget Target { get; set; }
-
-        [JsonIgnore]
-        public string TargetName { get; set; }
-
-        [JsonIgnore]
-        public ChatMessageFlags Flags { get; set; } = ChatMessageFlags.Log;
-
-        [JsonIgnore]
-        public long SequenceId { get; set; }
-
-        public UserChannelLeaveEvent() { }
-        public UserChannelLeaveEvent(DateTimeOffset parted, BasicUser user, IPacketTarget target) {
-            DateTime = parted;
-            Sender = user;
-            Target = target;
-            TargetName = target?.TargetName;
-        }
-    }
-}

SharpChat/Events/UserConnectEvent.cs

@@ -1,32 +0,0 @@
-using System;
-using System.Text.Json.Serialization;
-
-namespace SharpChat.Events {
-    public class UserConnectEvent : IChatEvent {
-        [JsonIgnore]
-        public DateTimeOffset DateTime { get; set; }
-
-        [JsonIgnore]
-        public BasicUser Sender { get; set; }
-
-        [JsonIgnore]
-        public IPacketTarget Target { get; set; }
-
-        [JsonIgnore]
-        public string TargetName { get; set; }
-
-        [JsonIgnore]
-        public ChatMessageFlags Flags { get; set; } = ChatMessageFlags.Log;
-
-        [JsonIgnore]
-        public long SequenceId { get; set; }
-
-        public UserConnectEvent() { }
-        public UserConnectEvent(DateTimeOffset joined, BasicUser user, IPacketTarget target) {
-            DateTime = joined;
-            Sender = user;
-            Target = target;
-            TargetName = target?.TargetName;
-        }
-    }
-}

SharpChat/Events/UserDisconnectEvent.cs

@@ -1,38 +0,0 @@
-using SharpChat.Packet;
-using System;
-using System.Text.Json.Serialization;
-
-namespace SharpChat.Events {
-    public class UserDisconnectEvent : IChatEvent {
-
-        [JsonIgnore]
-        public DateTimeOffset DateTime { get; set; }
-
-        [JsonIgnore]
-        public BasicUser Sender { get; set; }
-
-        [JsonIgnore]
-        public IPacketTarget Target { get; set; }
-
-        [JsonIgnore]
-        public string TargetName { get; set; }
-
-        [JsonIgnore]
-        public ChatMessageFlags Flags { get; set; } = ChatMessageFlags.Log;
-
-        [JsonIgnore]
-        public long SequenceId { get; set; }
-
-        [JsonPropertyName(@"reason")]
-        public UserDisconnectReason Reason { get; set; }
-
-        public UserDisconnectEvent() { }
-        public UserDisconnectEvent(DateTimeOffset parted, BasicUser user, IPacketTarget target, UserDisconnectReason reason) {
-            DateTime = parted;
-            Sender = user;
-            Target = target;
-            TargetName = target?.TargetName;
-            Reason = reason;
-        }
-    }
-}

SharpChat/Extensions.cs

@@ -1,35 +0,0 @@
-using System;
-using System.IO;
-using System.Security.Cryptography;
-using System.Text;
-
-namespace SharpChat {
-    public static class Extensions {
-        public static string GetSignedHash(this string str, string key = null)
-            => Encoding.UTF8.GetBytes(str).GetSignedHash(key);
-
-        public static string GetSignedHash(this byte[] bytes, string key = null) {
-            if (key == null)
-                key = File.Exists(@"login_key.txt") ? File.ReadAllText(@"login_key.txt") : @"woomy";
-
-            StringBuilder sb = new StringBuilder();
-
-            using (HMACSHA256 algo = new HMACSHA256(Encoding.UTF8.GetBytes(key))) {
-                byte[] hash = algo.ComputeHash(bytes);
-
-                foreach (byte b in hash)
-                    sb.AppendFormat(@"{0:x2}", b);
-            }
-
-            return sb.ToString();
-        }
-
-        public static string GetIdString(this byte[] buffer) {
-            const string id_chars = @"abcdefghijklmnopqrstuvwxyz0123456789-_ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-            StringBuilder sb = new StringBuilder();
-            foreach(byte b in buffer)
-                sb.Append(id_chars[b % id_chars.Length]);
-            return sb.ToString();
-        }
-    }
-}

SharpChat/Flashii/FlashiiAuth.cs

@@ -1,85 +0,0 @@
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Net.Http;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading.Tasks;
-
-namespace SharpChat.Flashii {
-    public class FlashiiAuthRequest {
-        [JsonPropertyName(@"user_id")]
-        public long UserId { get; set; }
-
-        [JsonPropertyName(@"token")]
-        public string Token { get; set; }
-
-        [JsonPropertyName(@"ip")]
-        public string IPAddress { get; set; }
-
-        [JsonIgnore]
-        public string Hash
-            => string.Join(@"#", UserId, Token, IPAddress).GetSignedHash();
-
-        public byte[] GetJSON()
-            => JsonSerializer.SerializeToUtf8Bytes(this);
-    }
-
-    public class FlashiiAuth {
-        [JsonPropertyName(@"success")]
-        public bool Success { get; set; }
-
-        [JsonPropertyName(@"reason")]
-        public string Reason { get; set; } = @"none";
-
-        [JsonPropertyName(@"user_id")]
-        public long UserId { get; set; }
-
-        [JsonPropertyName(@"username")]
-        public string Username { get; set; }
-
-        [JsonPropertyName(@"colour_raw")]
-        public int ColourRaw { get; set; }
-
-        [JsonPropertyName(@"hierarchy")]
-        public int Rank { get; set; }
-
-        [JsonPropertyName(@"is_silenced")]
-        public DateTimeOffset SilencedUntil { get; set; }
-
-        [JsonPropertyName(@"perms")]
-        public ChatUserPermissions Permissions { get; set; }
-
-        public static async Task<FlashiiAuth> Attempt(HttpClient httpClient, FlashiiAuthRequest authRequest) {
-            if(httpClient == null)
-                throw new ArgumentNullException(nameof(httpClient));
-            if(authRequest == null)
-                throw new ArgumentNullException(nameof(authRequest));
-
-#if DEBUG
-            if (authRequest.UserId >= 10000)
-                return new FlashiiAuth {
-                    Success = true,
-                    UserId = authRequest.UserId,
-                    Username = @"Misaka-" + (authRequest.UserId - 10000),
-                    ColourRaw = (RNG.Next(0, 255) << 16) | (RNG.Next(0, 255) << 8) | RNG.Next(0, 255),
-                    Rank = 0,
-                    SilencedUntil = DateTimeOffset.MinValue,
-                    Permissions = ChatUserPermissions.SendMessage | ChatUserPermissions.EditOwnMessage | ChatUserPermissions.DeleteOwnMessage,
-                };
-#endif
-
-            using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, FlashiiUrls.AuthURL) {
-                Content = new ByteArrayContent(authRequest.GetJSON()),
-                Headers = {
-                    { @"X-SharpChat-Signature", authRequest.Hash },
-                },
-            };
-
-            using HttpResponseMessage response = await httpClient.SendAsync(request);
-
-            return JsonSerializer.Deserialize<FlashiiAuth>(
-                await response.Content.ReadAsByteArrayAsync()
-            );
-        }
-    }
-}

SharpChat/Flashii/FlashiiBan.cs

@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Net.Http;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading.Tasks;
-
-namespace SharpChat.Flashii {
-    public class FlashiiBan {
-        private const string STRING = @"givemethebeans";
-
-        [JsonPropertyName(@"id")]
-        public int UserId { get; set; }
-
-        [JsonPropertyName(@"ip")]
-        public string UserIP { get; set; }
-
-        [JsonPropertyName(@"expires")]
-        public DateTimeOffset Expires { get; set; }
-
-        [JsonPropertyName(@"username")]
-        public string Username { get; set; }
-
-        public static async Task<IEnumerable<FlashiiBan>> GetList(HttpClient httpClient) {
-            if(httpClient == null)
-                throw new ArgumentNullException(nameof(httpClient));
-
-            using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, FlashiiUrls.BansURL) {
-                Headers = {
-                    { @"X-SharpChat-Signature", STRING.GetSignedHash() },
-                },
-            };
-
-            using HttpResponseMessage response = await httpClient.SendAsync(request);
-
-            return JsonSerializer.Deserialize<IEnumerable<FlashiiBan>>(await response.Content.ReadAsByteArrayAsync());
-        }
-    }
-}

SharpChat/Flashii/FlashiiBump.cs

@@ -1,47 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Net.Http;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading.Tasks;
-
-namespace SharpChat.Flashii {
-    public class FlashiiBump {
-        [JsonPropertyName(@"id")]
-        public long UserId { get; set; }
-
-        [JsonPropertyName(@"ip")]
-        public string UserIP { get; set; }
-
-        public static void Submit(HttpClient httpClient, IEnumerable<ChatUser> users) {
-            List<FlashiiBump> bups = users.Where(u => u.HasSessions).Select(x => new FlashiiBump { UserId = x.UserId, UserIP = x.RemoteAddresses.First().ToString() }).ToList();
-
-            if (bups.Any())
-                Submit(httpClient, bups);
-        }
-
-        public static void Submit(HttpClient httpClient, IEnumerable<FlashiiBump> users) {
-            if(httpClient == null)
-                throw new ArgumentNullException(nameof(httpClient));
-            if(users == null)
-                throw new ArgumentNullException(nameof(users));
-            if(!users.Any())
-                return;
-
-            byte[] data = JsonSerializer.SerializeToUtf8Bytes(users);
-
-            using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, FlashiiUrls.BumpURL) {
-                Content = new ByteArrayContent(data),
-                Headers = {
-                    { @"X-SharpChat-Signature", data.GetSignedHash() },
-                }
-            };
-
-            httpClient.SendAsync(request).ContinueWith(x => {
-                if(x.IsFaulted)
-                    Logger.Write($@"Flashii Bump Error: {x.Exception}");
-            });
-        }
-    }
-}

SharpChat/Flashii/FlashiiUrls.cs

@@ -1,35 +0,0 @@
-using System.IO;
-
-namespace SharpChat.Flashii {
-    public static class FlashiiUrls {
-        private const string BASE_URL_FILE = @"msz_url.txt";
-        private const string BASE_URL_FALLBACK = @"https://flashii.net";
-
-        private const string AUTH = @"/_sockchat/verify";
-        private const string BANS = @"/_sockchat/bans";
-        private const string BUMP = @"/_sockchat/bump";
-
-        public static string AuthURL { get; }
-        public static string BansURL { get; }
-        public static string BumpURL { get; }
-            
-        static FlashiiUrls() {
-            AuthURL = GetURL(AUTH);
-            BansURL = GetURL(BANS);
-            BumpURL = GetURL(BUMP);
-        }
-
-        public static string GetBaseURL() {
-            if(!File.Exists(BASE_URL_FILE))
-                return BASE_URL_FALLBACK;
-            string url = File.ReadAllText(BASE_URL_FILE).Trim().Trim('/');
-            if(string.IsNullOrEmpty(url))
-                return BASE_URL_FALLBACK;
-            return url;
-        }
-
-        public static string GetURL(string path) {
-            return GetBaseURL() + path;
-        }
-    }
-}

SharpChat/IChatCommand.cs

@@ -1,8 +1,6 @@
-using SharpChat.Events;
-
-namespace SharpChat {
+namespace SharpChat {
     public interface IChatCommand {
-        bool IsMatch(string name);
-        IChatMessage Dispatch(IChatCommandContext context);
+        bool IsMatch(ChatCommandContext ctx);
+        void Dispatch(ChatCommandContext ctx);
     }
 }

SharpChat/IChatCommandContext.cs

@@ -1,22 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace SharpChat {
-    public interface IChatCommandContext {
-        IEnumerable<string> Args { get; }
-        ChatUser User { get; }
-        ChatChannel Channel { get; }
-    }
-
-    public class ChatCommandContext : IChatCommandContext {
-        public IEnumerable<string> Args { get; }
-        public ChatUser User { get; }
-        public ChatChannel Channel { get; }
-
-        public ChatCommandContext(IEnumerable<string> args, ChatUser user, ChatChannel channel) {
-            Args = args ?? throw new ArgumentNullException(nameof(args));
-            User = user ?? throw new ArgumentNullException(nameof(user));
-            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
-        }
-    }
-}

SharpChat/IChatPacketHandler.cs

@@ -0,0 +1,6 @@
+namespace SharpChat {
+    public interface IChatPacketHandler {
+        bool IsMatch(ChatPacketHandlerContext ctx);
+        void Handle(ChatPacketHandlerContext ctx);
+    }
+}

SharpChat/IPacketTarget.cs

@@ -1,6 +0,0 @@
-namespace SharpChat {
-    public interface IPacketTarget {
-        string TargetName { get; }
-        void Send(IServerPacket packet);
-    }
-}

SharpChat/IServerPacket.cs

@@ -1,22 +1,17 @@
-using System.Collections.Generic;
-using System.Threading;
-
-namespace SharpChat {
+namespace SharpChat {
     public interface IServerPacket {
         long SequenceId { get; }
-        IEnumerable<string> Pack();
+        string Pack();
     }
 
     public abstract class ServerPacket : IServerPacket {
-        private static long SequenceIdCounter = 0;
-
         public long SequenceId { get; }
 
         public ServerPacket(long sequenceId = 0) {
             // Allow sequence id to be manually set for potential message repeats
-            SequenceId = sequenceId > 0 ? sequenceId : Interlocked.Increment(ref SequenceIdCounter);
+            SequenceId = sequenceId > 0 ? sequenceId : SharpId.Next();
         }
 
-        public abstract IEnumerable<string> Pack();
+        public abstract string Pack();
     }
 }

SharpChat/Logger.cs

@@ -4,25 +4,31 @@ using System.Text;
 
 namespace SharpChat {
     public static class Logger {
-        public static void Write(string str)
-            => Console.WriteLine(string.Format(@"[{1}] {0}", str, DateTime.Now));
+        public static void Write(string str) {
+            Console.WriteLine(string.Format("[{1}] {0}", str, DateTime.Now));
+        }
 
-        public static void Write(byte[] bytes)
-            => Write(Encoding.UTF8.GetString(bytes));
+        public static void Write(byte[] bytes) {
+            Write(Encoding.UTF8.GetString(bytes));
+        }
 
-        public static void Write(object obj)
-            => Write(obj?.ToString() ?? string.Empty);
+        public static void Write(object obj) {
+            Write(obj?.ToString() ?? string.Empty);
+        }
 
-        [Conditional(@"DEBUG")]
-        public static void Debug(string str)
-            => Write(str);
+        [Conditional("DEBUG")]
+        public static void Debug(string str) {
+            Write(str);
+        }
 
-        [Conditional(@"DEBUG")]
-        public static void Debug(byte[] bytes)
-            => Write(bytes);
+        [Conditional("DEBUG")]
+        public static void Debug(byte[] bytes) {
+            Write(bytes);
+        }
 
-        [Conditional(@"DEBUG")]
-        public static void Debug(object obj)
-            => Write(obj);
+        [Conditional("DEBUG")]
+        public static void Debug(object obj) {
+            Write(obj);
+        }
     }
 }

SharpChat/Misuzu/MisuzuAuthInfo.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace SharpChat.Misuzu {
+    public class MisuzuAuthInfo {
+        [JsonPropertyName("success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName("reason")]
+        public string Reason { get; set; } = "none";
+
+        [JsonPropertyName("user_id")]
+        public long UserId { get; set; }
+
+        [JsonPropertyName("username")]
+        public string? UserName { get; set; }
+
+        [JsonPropertyName("colour_raw")]
+        public int ColourRaw { get; set; }
+
+        public ChatColour Colour => ChatColour.FromMisuzu(ColourRaw);
+
+        [JsonPropertyName("hierarchy")]
+        public int Rank { get; set; }
+
+        [JsonPropertyName("perms")]
+        public ChatUserPermissions Permissions { get; set; }
+
+        [JsonPropertyName("super")]
+        public bool IsSuper { get; set; }
+    }
+}

SharpChat/Misuzu/MisuzuBanInfo.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace SharpChat.Misuzu {
+    public class MisuzuBanInfo {
+        [JsonPropertyName("is_ban")]
+        public bool IsBanned { get; set; }
+
+        [JsonPropertyName("user_id")]
+        public string? UserId { get; set; }
+
+        [JsonPropertyName("ip_addr")]
+        public string? RemoteAddress { get; set; }
+
+        [JsonPropertyName("is_perma")]
+        public bool IsPermanent { get; set; }
+
+        [JsonPropertyName("expires")]
+        public DateTimeOffset ExpiresAt { get; set; }
+
+        // only populated in list request
+        [JsonPropertyName("user_name")]
+        public string? UserName { get; set; }
+
+        [JsonPropertyName("user_colour")]
+        public int UserColourRaw { get; set; }
+
+        public bool HasExpired => !IsPermanent && DateTimeOffset.UtcNow >= ExpiresAt;
+
+        public ChatColour UserColour => ChatColour.FromMisuzu(UserColourRaw);
+    }
+}

SharpChat/Misuzu/MisuzuClient.cs

@@ -0,0 +1,253 @@
+using SharpChat.Config;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace SharpChat.Misuzu {
+    public class MisuzuClient {
+        private const string DEFAULT_BASE_URL = "https://flashii.net/_sockchat";
+        private const string DEFAULT_SECRET_KEY = "woomy";
+
+        private const string BUMP_ONLINE_URL = "{0}/bump";
+        private const string AUTH_VERIFY_URL = "{0}/verify";
+
+        private const string BANS_CHECK_URL = "{0}/bans/check?u={1}&a={2}&x={3}&n={4}";
+        private const string BANS_CREATE_URL = "{0}/bans/create";
+        private const string BANS_REVOKE_URL = "{0}/bans/revoke?t={1}&s={2}&x={3}";
+        private const string BANS_LIST_URL = "{0}/bans/list?x={1}";
+
+        private const string VERIFY_SIG = "verify#{0}#{1}#{2}";
+        private const string BANS_CHECK_SIG = "check#{0}#{1}#{2}#{3}";
+        private const string BANS_REVOKE_SIG = "revoke#{0}#{1}#{2}";
+        private const string BANS_CREATE_SIG = "create#{0}#{1}#{2}#{3}#{4}#{5}#{6}#{7}";
+        private const string BANS_LIST_SIG = "list#{0}";
+
+        private readonly HttpClient HttpClient;
+
+        private CachedValue<string> BaseURL { get; }
+        private CachedValue<string> SecretKey { get; }
+
+        public MisuzuClient(HttpClient httpClient, IConfig config) {
+            if(config == null)
+                throw new ArgumentNullException(nameof(config));
+            HttpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
+
+            BaseURL = config.ReadCached("url", DEFAULT_BASE_URL);
+            SecretKey = config.ReadCached("secret", DEFAULT_SECRET_KEY);
+        }
+
+        public string CreateStringSignature(string str) {
+            return CreateBufferSignature(Encoding.UTF8.GetBytes(str));
+        }
+
+        public string CreateBufferSignature(byte[] bytes) {
+            using HMACSHA256 algo = new(Encoding.UTF8.GetBytes(SecretKey.Value ?? string.Empty));
+            return string.Concat(algo.ComputeHash(bytes).Select(c => c.ToString("x2")));
+        }
+
+        public async Task<MisuzuAuthInfo?> AuthVerifyAsync(string method, string token, string ipAddr) {
+            method ??= string.Empty;
+            token ??= string.Empty;
+            ipAddr ??= string.Empty;
+
+            string sig = string.Format(VERIFY_SIG, method, token, ipAddr);
+
+            HttpRequestMessage req = new(HttpMethod.Post, string.Format(AUTH_VERIFY_URL, BaseURL)) {
+                Content = new FormUrlEncodedContent(new Dictionary<string, string> {
+                    { "method", method },
+                    { "token", token },
+                    { "ipaddr", ipAddr },
+                }),
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sig) },
+                },
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            return JsonSerializer.Deserialize<MisuzuAuthInfo>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+
+        public async Task BumpUsersOnlineAsync(IEnumerable<(string userId, string ipAddr)> list) {
+            if(list == null)
+                throw new ArgumentNullException(nameof(list));
+            if(!list.Any())
+                return;
+
+            string now = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString();
+            StringBuilder sb = new();
+            sb.AppendFormat("bump#{0}", now);
+
+            Dictionary<string, string> formData = new() {
+                { "t", now }
+            };
+
+            foreach(var (userId, ipAddr) in list) {
+                sb.AppendFormat("#{0}:{1}", userId, ipAddr);
+                formData.Add(string.Format("u[{0}]", userId), ipAddr);
+            }
+
+            HttpRequestMessage req = new(HttpMethod.Post, string.Format(BUMP_ONLINE_URL, BaseURL)) {
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sb.ToString()) }
+                },
+                Content = new FormUrlEncodedContent(formData),
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            try {
+                res.EnsureSuccessStatusCode();
+            } catch(HttpRequestException) {
+                Logger.Debug(await res.Content.ReadAsStringAsync());
+#if DEBUG
+                throw;
+#endif
+            }
+        }
+
+        public async Task<MisuzuBanInfo?> CheckBanAsync(
+            string? userId = null,
+            string? ipAddr = null,
+            bool userIdIsName = false
+        ) {
+            userId ??= string.Empty;
+            ipAddr ??= string.Empty;
+
+            string userIdIsNameStr = userIdIsName ? "1" : "0";
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(BANS_CHECK_URL, BaseURL, Uri.EscapeDataString(userId), Uri.EscapeDataString(ipAddr), Uri.EscapeDataString(now), Uri.EscapeDataString(userIdIsNameStr));
+            string sig = string.Format(BANS_CHECK_SIG, now, userId, ipAddr, userIdIsNameStr);
+
+            HttpRequestMessage req = new(HttpMethod.Get, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sig) },
+                },
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            return JsonSerializer.Deserialize<MisuzuBanInfo>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+
+        public async Task<MisuzuBanInfo[]?> GetBanListAsync() {
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(BANS_LIST_URL, BaseURL, Uri.EscapeDataString(now));
+            string sig = string.Format(BANS_LIST_SIG, now);
+
+            HttpRequestMessage req = new(HttpMethod.Get, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sig) },
+                },
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            return JsonSerializer.Deserialize<MisuzuBanInfo[]>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+
+        public enum BanRevokeKind {
+            UserId,
+            RemoteAddress,
+        }
+
+        public async Task<bool> RevokeBanAsync(MisuzuBanInfo banInfo, BanRevokeKind kind) {
+            if(banInfo == null)
+                throw new ArgumentNullException(nameof(banInfo));
+
+            string type = kind switch {
+                BanRevokeKind.UserId => "user",
+                BanRevokeKind.RemoteAddress => "addr",
+                _ => throw new ArgumentException("Invalid kind specified.", nameof(kind)),
+            };
+
+            string target = kind switch {
+                BanRevokeKind.UserId => banInfo?.UserId ?? string.Empty,
+                BanRevokeKind.RemoteAddress => banInfo?.RemoteAddress ?? string.Empty,
+                _ => string.Empty,
+            };
+
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(BANS_REVOKE_URL, BaseURL, Uri.EscapeDataString(type), Uri.EscapeDataString(target), Uri.EscapeDataString(now));
+            string sig = string.Format(BANS_REVOKE_SIG, now, type, target);
+
+            HttpRequestMessage req = new(HttpMethod.Delete, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sig) },
+                },
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            if(res.StatusCode == HttpStatusCode.NotFound)
+                return false;
+
+            res.EnsureSuccessStatusCode();
+
+            return res.StatusCode == HttpStatusCode.NoContent;
+        }
+
+        public async Task CreateBanAsync(
+            string targetId,
+            string targetAddr,
+            string modId,
+            string modAddr,
+            TimeSpan duration,
+            string reason
+        ) {
+            if(string.IsNullOrWhiteSpace(targetAddr))
+                throw new ArgumentNullException(nameof(targetAddr));
+            if(string.IsNullOrWhiteSpace(modAddr))
+                throw new ArgumentNullException(nameof(modAddr));
+            if(duration <= TimeSpan.Zero)
+                return;
+
+            modId ??= string.Empty;
+            targetId ??= string.Empty;
+            reason ??= string.Empty;
+
+            string isPerma = duration == TimeSpan.MaxValue ? "1" : "0";
+            string durationStr = duration == TimeSpan.MaxValue ? "-1" : duration.TotalSeconds.ToString();
+
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string sig = string.Format(
+                BANS_CREATE_SIG,
+                now, targetId, targetAddr,
+                modId, modAddr,
+                durationStr, isPerma, reason
+            );
+
+            HttpRequestMessage req = new(HttpMethod.Post, string.Format(BANS_CREATE_URL, BaseURL)) {
+                Headers = {
+                    { "X-SharpChat-Signature", CreateStringSignature(sig) },
+                },
+                Content = new FormUrlEncodedContent(new Dictionary<string, string> {
+                    { "t", now },
+                    { "ui", targetId },
+                    { "ua", targetAddr },
+                    { "mi", modId },
+                    { "ma", modAddr },
+                    { "d", durationStr },
+                    { "p", isPerma },
+                    { "r", reason },
+                }),
+            };
+
+            using HttpResponseMessage res = await HttpClient.SendAsync(req);
+
+            res.EnsureSuccessStatusCode();
+        }
+    }
+}

SharpChat/Packet/AuthFailPacket.cs

@@ -1,57 +1,38 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
 
 namespace SharpChat.Packet {
-    public enum AuthFailReason {
-        AuthInvalid,
-        MaxSessions,
-        Banned,
-    }
-
     public class AuthFailPacket : ServerPacket {
-        public AuthFailReason Reason { get; private set; }
-        public DateTimeOffset Expires { get; private set; }
-
-        public AuthFailPacket(AuthFailReason reason, DateTimeOffset? expires = null) {
-            Reason = reason;
-
-            if (reason == AuthFailReason.Banned) {
-                if (!expires.HasValue)
-                    throw new ArgumentNullException(nameof(expires));
-                Expires = expires.Value;
-            }
+        public enum FailReason {
+            AuthInvalid,
+            MaxSessions,
+            Banned,
+            Null,
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
+        private readonly FailReason Reason;
+        private readonly long Expires;
 
-            sb.Append((int)SockChatServerPacket.UserConnect);
-            sb.Append("\tn\t");
+        public AuthFailPacket(FailReason reason) {
+            Reason = reason;
+        }
 
-            switch (Reason) {
-                case AuthFailReason.AuthInvalid:
-                default:
-                    sb.Append(@"authfail");
-                    break;
-                case AuthFailReason.MaxSessions:
-                    sb.Append(@"sockfail");
-                    break;
-                case AuthFailReason.Banned:
-                    sb.Append(@"joinfail");
-                    break;
-            }
+        public AuthFailPacket(DateTimeOffset expires) {
+            Reason = FailReason.Banned;
+            Expires = expires.Year >= 2100 ? -1 : expires.ToUnixTimeSeconds();
+        }
 
-            if (Reason == AuthFailReason.Banned) {
-                sb.Append('\t');
+        public override string Pack() {
+            string packet = string.Format("1\tn\t{0}fail", Reason switch {
+                FailReason.AuthInvalid => "auth",
+                FailReason.MaxSessions => "sock",
+                FailReason.Banned => "join",
+                _ => "user",
+            });
 
-                if (Expires == DateTimeOffset.MaxValue)
-                    sb.Append(@"-1");
-                else
-                    sb.Append(Expires.ToUnixTimeSeconds());
-            }
+            if(Reason == FailReason.Banned)
+                packet += string.Format("\t{0}", Expires);
 
-            yield return sb.ToString();
+            return packet;
         }
     }
 }

SharpChat/Packet/AuthSuccessPacket.cs

@@ -1,31 +1,49 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
 
 namespace SharpChat.Packet {
     public class AuthSuccessPacket : ServerPacket {
-        public ChatUser User { get; private set; }
-        public ChatChannel Channel { get; private set; }
-        public ChatUserSession Session { get; private set; }
+        private readonly long UserId;
+        private readonly string UserName;
+        private readonly ChatColour UserColour;
+        private readonly int UserRank;
+        private readonly ChatUserPermissions UserPerms;
+        private readonly string ChannelName;
+        private readonly int MaxMessageLength;
 
-        public AuthSuccessPacket(ChatUser user, ChatChannel channel, ChatUserSession sess) {
-            User = user ?? throw new ArgumentNullException(nameof(user));
-            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
-            Session = sess ?? throw new ArgumentNullException(nameof(channel));
+        public AuthSuccessPacket(
+            long userId,
+            string userName,
+            ChatColour userColour,
+            int userRank,
+            ChatUserPermissions userPerms,
+            string channelName,
+            int maxMsgLength
+        ) {
+            UserId = userId;
+            UserName = userName;
+            UserColour = userColour;
+            UserRank = userRank;
+            UserPerms = userPerms;
+            ChannelName = channelName;
+            MaxMessageLength = maxMsgLength;
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.UserConnect);
-            sb.Append("\ty\t");
-            sb.Append(User.Pack());
-            sb.Append('\t');
-            sb.Append(Channel.Name);
-            sb.Append('\t');
-            sb.Append(SockChatServer.MSG_LENGTH_MAX);
-
-            return new[] { sb.ToString() };
+        public override string Pack() {
+            return string.Format(
+                "1\ty\t{0}\t{1}\t{2}\t{3} {4} {5} {6} {7}\t{8}\t{9}",
+                UserId,
+                UserName,
+                UserColour,
+                UserRank,
+                UserPerms.HasFlag(ChatUserPermissions.KickUser) ? 1 : 0,
+                UserPerms.HasFlag(ChatUserPermissions.ViewLogs) ? 1 : 0,
+                UserPerms.HasFlag(ChatUserPermissions.SetOwnNickname) ? 1 : 0,
+                UserPerms.HasFlag(ChatUserPermissions.CreateChannel) ? (
+                    UserPerms.HasFlag(ChatUserPermissions.SetChannelPermanent) ? 2 : 1
+                ) : 0,
+                ChannelName,
+                MaxMessageLength
+            );
         }
     }
 }

SharpChat/Packet/BanListPacket.cs

@@ -1,35 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public class BanListPacket : ServerPacket {
-        public IEnumerable<IBan> Bans { get; private set; }
-
-        public BanListPacket(IEnumerable<IBan> bans) {
-            Bans = bans ?? throw new ArgumentNullException(nameof(bans));
-        }
-
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.MessageAdd);
-            sb.Append('\t');
-            sb.Append(DateTimeOffset.Now.ToUnixTimeSeconds());
-            sb.Append("\t-1\t0\fbanlist\f");
-
-            foreach (IBan ban in Bans)
-                sb.AppendFormat(@"<a href=""javascript:void(0);"" onclick=""Chat.SendMessageWrapper('/unban '+ this.innerHTML);"">{0}</a>, ", ban);
-
-            if (Bans.Any())
-                sb.Length -= 2;
-
-            sb.Append('\t');
-            sb.Append(SequenceId);
-            sb.Append("\t10010");
-
-            return new[] { sb.ToString() };
-        }
-    }
-}

SharpChat/Packet/BanListResponsePacket.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Text;
+
+namespace SharpChat.Packet {
+    public class BanListResponsePacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string[] Bans;
+
+        public BanListResponsePacket(string[] bans) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            Bans = bans;
+        }
+
+        public override string Pack() {
+            StringBuilder sb = new();
+
+            sb.AppendFormat("2\t{0}\t-1\t0\fbanlist\f", Timestamp);
+
+            foreach(string ban in Bans)
+                sb.AppendFormat(@"<a href=""javascript:void(0);"" onclick=""Chat.SendMessageWrapper('/unban '+ this.innerHTML);"">{0}</a>, ", ban);
+
+            if(Bans.Length > 0)
+                sb.Length -= 2;
+
+            sb.AppendFormat("\t{0}\t10010", SequenceId);
+
+            return sb.ToString();
+        }
+    }
+}

SharpChat/Packet/ChannelCreatePacket.cs

@@ -1,24 +1,28 @@
-using System.Collections.Generic;
-using System.Text;
+using System;
 
 namespace SharpChat.Packet {
     public class ChannelCreatePacket : ServerPacket {
-        public ChatChannel Channel { get; private set; }
+        private readonly string ChannelName;
+        private readonly bool ChannelHasPassword;
+        private readonly bool ChannelIsTemporary;
 
-        public ChannelCreatePacket(ChatChannel channel) {
-            Channel = channel;
+        public ChannelCreatePacket(
+            string channelName,
+            bool channelHasPassword,
+            bool channelIsTemporary
+        ) {
+            ChannelName = channelName;
+            ChannelHasPassword = channelHasPassword;
+            ChannelIsTemporary = channelIsTemporary;
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ChannelEvent);
-            sb.Append('\t');
-            sb.Append((int)SockChatServerChannelPacket.Create);
-            sb.Append('\t');
-            sb.Append(Channel.Pack());
-
-            yield return sb.ToString();
+        public override string Pack() {
+            return string.Format(
+                "4\t0\t{0}\t{1}\t{2}",
+                ChannelName,
+                ChannelHasPassword ? 1 : 0,
+                ChannelIsTemporary ? 1 : 0
+            );
         }
     }
 }

SharpChat/Packet/ChannelCreateResponsePacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelCreateResponsePacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelCreateResponsePacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t0\fcrchan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelDeleteNotAllowedErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelDeleteNotAllowedErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelDeleteNotAllowedErrorPacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fndchan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelDeletePacket.cs

@@ -1,25 +1,15 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
 
 namespace SharpChat.Packet {
     public class ChannelDeletePacket : ServerPacket {
-        public ChatChannel Channel { get; private set; }
+        private readonly string ChannelName;
 
-        public ChannelDeletePacket(ChatChannel channel) {
-            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
+        public ChannelDeletePacket(string channelName) {
+            ChannelName = channelName;
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ChannelEvent);
-            sb.Append('\t');
-            sb.Append((int)SockChatServerChannelPacket.Delete);
-            sb.Append('\t');
-            sb.Append(Channel.Name);
-
-            yield return sb.ToString();
+        public override string Pack() {
+            return string.Format("4\t2\t{0}", ChannelName);
         }
     }
 }

SharpChat/Packet/ChannelDeleteResponsePacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelDeleteResponsePacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelDeleteResponsePacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t0\fdelchan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelNameFormatErrorPacket.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelNameFormatErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+
+        public ChannelNameFormatErrorPacket() {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\finchan\t{1}\t10010", Timestamp, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelNameInUseErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelNameInUseErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelNameInUseErrorPacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fnischan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelNotFoundErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelNotFoundErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelNotFoundErrorPacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fnochan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelPasswordChangedResponsePacket.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelPasswordChangedResponsePacket : ServerPacket {
+        private readonly long Timestamp;
+
+        public ChannelPasswordChangedResponsePacket() {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t0\fcpwdchan\t{1}\t10010", Timestamp, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelPasswordWrongErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelPasswordWrongErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelPasswordWrongErrorPacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fipwchan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelRankChangedResponsePacket.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelRankChangedResponsePacket : ServerPacket {
+        private readonly long Timestamp;
+
+        public ChannelRankChangedResponsePacket() {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t0\fcprivchan\t{1}\t10010", Timestamp, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelRankTooHighErrorPacket.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelRankTooHighErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+
+        public ChannelRankTooHighErrorPacket() {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\frankerr\t{1}\t10010", Timestamp, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelRankTooLowErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class ChannelRankTooLowErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string ChannelName;
+
+        public ChannelRankTooLowErrorPacket(string channelName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            ChannelName = channelName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fipchan\f{1}\t{2}\t10010", Timestamp, ChannelName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ChannelUpdatePacket.cs

@@ -1,28 +1,32 @@
-using System.Collections.Generic;
-using System.Text;
+using System;
 
 namespace SharpChat.Packet {
     public class ChannelUpdatePacket : ServerPacket {
-        public string PreviousName { get; private set; }
-        public ChatChannel Channel { get; private set; }
+        private readonly string ChannelNamePrevious;
+        private readonly string ChannelNameNew;
+        private readonly bool ChannelHasPassword;
+        private readonly bool ChannelIsTemporary;
 
-        public ChannelUpdatePacket(string previousName, ChatChannel channel) {
-            PreviousName = previousName;
-            Channel = channel;
+        public ChannelUpdatePacket(
+            string channelNamePrevious,
+            string channelNameNew,
+            bool channelHasPassword,
+            bool channelIsTemporary
+        ) {
+            ChannelNamePrevious = channelNamePrevious;
+            ChannelNameNew = channelNameNew;
+            ChannelHasPassword = channelHasPassword;
+            ChannelIsTemporary = channelIsTemporary;
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ChannelEvent);
-            sb.Append('\t');
-            sb.Append((int)SockChatServerChannelPacket.Update);
-            sb.Append('\t');
-            sb.Append(PreviousName);
-            sb.Append('\t');
-            sb.Append(Channel.Pack());
-
-            yield return sb.ToString();
+        public override string Pack() {
+            return string.Format(
+                "4\t1\t{0}\t{1}\t{2}\t{3}",
+                ChannelNamePrevious,
+                ChannelNameNew,
+                ChannelHasPassword ? 1 : 0,
+                ChannelIsTemporary ? 1 : 0
+            );
         }
     }
 }

SharpChat/Packet/ChannelsPopulatePacket.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Text;
+
+namespace SharpChat.Packet {
+    public class ChannelsPopulatePacket : ServerPacket {
+        public record ListEntry(string Name, bool HasPassword, bool IsTemporary);
+
+        private readonly ListEntry[] Entries;
+
+        public ChannelsPopulatePacket(ListEntry[] entries) {
+            Entries = entries;
+        }
+
+        public override string Pack() {
+            StringBuilder sb = new();
+
+            sb.AppendFormat("7\t2\t{0}", Entries.Length);
+
+            foreach(ListEntry entry in Entries)
+                sb.AppendFormat(
+                    "\t{0}\t{1}\t{2}",
+                    entry.Name,
+                    entry.HasPassword ? 1 : 0,
+                    entry.IsTemporary ? 1 : 0
+                );
+
+            return sb.ToString();
+        }
+    }
+}

SharpChat/Packet/ChatMessageAddPacket.cs

@@ -1,55 +0,0 @@
-using SharpChat.Events;
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public class ChatMessageAddPacket : ServerPacket {
-        public IChatMessage Message { get; private set; }
-
-        public ChatMessageAddPacket(IChatMessage message) : base(message?.SequenceId ?? 0) {
-            Message = message ?? throw new ArgumentNullException(nameof(message));
-
-            if (Message.SequenceId < 1)
-                Message.SequenceId = SequenceId;
-        }
-
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.MessageAdd);
-            sb.Append('\t');
-
-            sb.Append(Message.DateTime.ToUnixTimeSeconds());
-            sb.Append('\t');
-
-            sb.Append(Message.Sender?.UserId ?? -1);
-            sb.Append('\t');
-
-            if (Message.Flags.HasFlag(ChatMessageFlags.Action))
-                sb.Append(@"<i>");
-
-            sb.Append(
-                Message.Text
-                    .Replace(@"<", @"&lt;")
-                    .Replace(@">", @"&gt;")
-                    .Replace("\n", @" <br/> ")
-                    .Replace("\t", @"    ")
-            );
-
-            if (Message.Flags.HasFlag(ChatMessageFlags.Action))
-                sb.Append(@"</i>");
-
-            sb.Append('\t');
-            sb.Append(SequenceId);
-            sb.AppendFormat(
-                "\t1{0}0{1}{2}",
-                Message.Flags.HasFlag(ChatMessageFlags.Action) ? '1' : '0',
-                Message.Flags.HasFlag(ChatMessageFlags.Action) ? '0' : '1',
-                Message.Flags.HasFlag(ChatMessageFlags.Private) ? '1' : '0'
-            );
-
-            yield return sb.ToString();
-        }
-    }
-}

SharpChat/Packet/ChatMessageDeletePacket.cs

@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public class ChatMessageDeletePacket : ServerPacket {
-        public long EventId { get; private set; }
-
-        public ChatMessageDeletePacket(long eventId) {
-            EventId = eventId;
-        }
-
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.MessageDelete);
-            sb.Append('\t');
-            sb.Append(EventId);
-
-            yield return sb.ToString();
-        }
-    }
-}

SharpChat/Packet/CommandFormatErrorPacket.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class CommandFormatErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+
+        public CommandFormatErrorPacket() {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fcmdna\t{1}\t10010", Timestamp, SequenceId);
+        }
+    }
+}

SharpChat/Packet/CommandNotAllowedErrorPacket.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace SharpChat.Packet {
+    public class CommandNotAllowedErrorPacket : ServerPacket {
+        private readonly long Timestamp;
+        private readonly string CommandName;
+
+        public CommandNotAllowedErrorPacket(string commandName) {
+            Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
+            CommandName = commandName;
+        }
+
+        public override string Pack() {
+            return string.Format("2\t{0}\t-1\t1\fcmdna\f/{1}\t{2}\t10010", Timestamp, CommandName, SequenceId);
+        }
+    }
+}

SharpChat/Packet/ContextChannelsPacket.cs

@@ -1,31 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public class ContextChannelsPacket : ServerPacket {
-        public IEnumerable<ChatChannel> Channels { get; private set; }
-
-        public ContextChannelsPacket(IEnumerable<ChatChannel> channels) {
-            Channels = channels?.Where(c => c != null) ?? throw new ArgumentNullException(nameof(channels));
-        }
-
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ContextPopulate);
-            sb.Append('\t');
-            sb.Append((int)SockChatServerContextPacket.Channels);
-            sb.Append('\t');
-            sb.Append(Channels.Count());
-
-            foreach (ChatChannel channel in Channels) {
-                sb.Append('\t');
-                sb.Append(channel.Pack());
-            }
-
-            yield return sb.ToString();
-        }
-    }
-}

SharpChat/Packet/ContextClearPacket.cs

@@ -1,35 +1,21 @@
-using System.Collections.Generic;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public enum ContextClearMode {
-        Messages = 0,
-        Users = 1,
-        Channels = 2,
-        MessagesUsers = 3,
-        MessagesUsersChannels = 4,
-    }
-
+namespace SharpChat.Packet {
     public class ContextClearPacket : ServerPacket {
-        public ChatChannel Channel { get; private set; }
-        public ContextClearMode Mode { get; private set; }
+        public enum ClearMode {
+            Messages = 0,
+            Users = 1,
+            Channels = 2,
+            MessagesUsers = 3,
+            MessagesUsersChannels = 4,
+        }
 
-        public bool IsGlobal
-            => Channel == null;
+        private readonly ClearMode Mode;
 
-        public ContextClearPacket(ChatChannel channel, ContextClearMode mode) {
-            Channel = channel;
+        public ContextClearPacket(ClearMode mode) {
             Mode = mode;
         }
 
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ContextClear);
-            sb.Append('\t');
-            sb.Append((int)Mode);
-
-            yield return sb.ToString();
+        public override string Pack() {
+            return string.Format("8\t{0}", (int)Mode);
         }
     }
 }

SharpChat/Packet/ContextMessagePacket.cs

@@ -1,99 +0,0 @@
-using SharpChat.Events;
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace SharpChat.Packet {
-    public class ContextMessagePacket : ServerPacket {
-        public IChatEvent Event { get; private set; }
-        public bool Notify { get; private set; }
-
-        public ContextMessagePacket(IChatEvent evt, bool notify = false) {
-            Event = evt ?? throw new ArgumentNullException(nameof(evt));
-            Notify = notify;
-        }
-
-        private const string V1_CHATBOT = "-1\tChatBot\tinherit\t\t";
-
-        public override IEnumerable<string> Pack() {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append((int)SockChatServerPacket.ContextPopulate);
-            sb.Append('\t');
-            sb.Append((int)SockChatServerContextPacket.Message);
-            sb.Append('\t');
-            sb.Append(Event.DateTime.ToUnixTimeSeconds());
-            sb.Append('\t');
-
-            switch (Event) {
-                case IChatMessage msg:
-                    sb.Append(Event.Sender.Pack());
-                    sb.Append('\t');
-                    sb.Append(
-                        msg.Text
-                            .Replace(@"<", @"&lt;")
-                            .Replace(@">", @"&gt;")
-                            .Replace("\n", @" <br/> ")
-                            .Replace("\t", @"    ")
-                    );
-                    break;
-
-                case UserConnectEvent _:
-                    sb.Append(V1_CHATBOT);
-                    sb.Append("0\fjoin\f");
-                    sb.Append(Event.Sender.Username);
-                    break;
-
-                case UserChannelJoinEvent _:
-                    sb.Append(V1_CHATBOT);
-                    sb.Append("0\fjchan\f");
-                    sb.Append(Event.Sender.Username);
-                    break;
-
-                case UserChannelLeaveEvent _:
-                    sb.Append(V1_CHATBOT);
-                    sb.Append("0\flchan\f");
-                    sb.Append(Event.Sender.Username);
-                    break;
-
-                case UserDisconnectEvent ude:
-                    sb.Append(V1_CHATBOT);
-                    sb.Append("0\f");
-
-                    switch (ude.Reason) {
-                        case UserDisconnectReason.Flood:
-                            sb.Append(@"flood");
-                            break;
-                        case UserDisconnectReason.Kicked:
-                            sb.Append(@"kick");
-                            break;
-                        case UserDisconnectReason.TimeOut:
-                            sb.Append(@"timeout");
-                            break;
-                        case UserDisconnectReason.Leave:
-                        default:
-                            sb.Append(@"leave");
-                            break;
-                    }
-
-                    sb.Append('\f');
-                    sb.Append(Event.Sender.Username);
-                    break;
-            }
-
-
-            sb.Append('\t');
-            sb.Append(Event.SequenceId < 1 ? SequenceId : Event.SequenceId);
-            sb.Append('\t');
-            sb.Append(Notify ? '1' : '0');
-            sb.AppendFormat(
-                "\t1{0}0{1}{2}",
-                Event.Flags.HasFlag(ChatMessageFlags.Action) ? '1' : '0',
-                Event.Flags.HasFlag(ChatMessageFlags.Action) ? '0' : '1',
-                Event.Flags.HasFlag(ChatMessageFlags.Private) ? '1' : '0'
-            );
-
-            yield return sb.ToString();
-        }
-    }
-}