sharp-chat/SharpChat.Protocol.IRC/ClientCommands/PartCommand.cs

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2022-08-30 15:05:29 +00:00
using SharpChat.Channels;
using SharpChat.Protocol.IRC.Channels;
using SharpChat.Protocol.IRC.Replies;
using System;
using System.Collections.Generic;
using System.Linq;
namespace SharpChat.Protocol.IRC.ClientCommands {
public class PartCommand : IClientCommand {
public const string NAME = @"PART";
public string CommandName => NAME;
public bool RequireSession => true;
private ChannelManager Channels { get; }
private ChannelUserRelations ChannelUsers { get; }
public PartCommand(ChannelManager channels, ChannelUserRelations channelUsers) {
Channels = channels ?? throw new ArgumentNullException(nameof(channels));
ChannelUsers = channelUsers ?? throw new ArgumentNullException(nameof(channelUsers));
}
public void HandleCommand(ClientCommandContext ctx) {
IEnumerable<string> channelNames = (ctx.Arguments.FirstOrDefault() ?? string.Empty).Split(',').Select(n => n.ToLowerInvariant());
if(!channelNames.Any()) {
ctx.Connection.SendReply(new NeedMoreParamsReply(NAME));
return;
}
foreach(string channelName in channelNames) {
Channels.GetChannel(c => channelName.Equals(c.GetIRCName()), channel => {
if(channel == null) {
ctx.Connection.SendReply(new NoSuchChannelReply(channelName));
return;
}
ChannelUsers.HasSession(channel, ctx.Session, hasUser => {
if(!hasUser) {
ctx.Connection.SendReply(new NotOnChannelReply(channel));
return;
}
ChannelUsers.LeaveChannel(channel, ctx.Session);
});
});
}
}
}
}