sharp-chat/SharpChat.Protocol.SockChat/Commands/DeleteMessageCommand.cs

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2022-08-30 15:05:29 +00:00
using SharpChat.Messages;
using SharpChat.Protocol.SockChat.Packets;
using SharpChat.Users;
using System;
using System.Collections.Generic;
using System.Linq;
namespace SharpChat.Protocol.SockChat.Commands {
public class DeleteMessageCommand : ICommand {
public bool IsCommandMatch(string name, IEnumerable<string> args)
=> name == @"delmsg" || (name == @"delete" && args.ElementAtOrDefault(1)?.All(char.IsDigit) == true);
private MessageManager Messages { get; }
private IUser Sender { get; }
public DeleteMessageCommand(MessageManager messages, IUser sender) {
Messages = messages ?? throw new ArgumentNullException(nameof(messages));
Sender = sender ?? throw new ArgumentNullException(nameof(sender));
}
public bool DispatchCommand(CommandContext ctx) {
bool deleteAnyMessage = ctx.User.Can(UserPermissions.DeleteAnyMessage);
if(!deleteAnyMessage && !ctx.User.Can(UserPermissions.DeleteOwnMessage)) {
ctx.Connection.SendPacket(new CommandNotAllowedErrorPacket(Sender, ctx.Args));
return true;
}
if(!long.TryParse(ctx.Args.ElementAtOrDefault(1), out long messageId)) {
ctx.Connection.SendPacket(new CommandFormatErrorPacket(Sender));
return true;
}
Messages.GetMessage(messageId, msg => {
if(msg == null || msg.Sender.Rank > ctx.User.Rank
|| (!deleteAnyMessage && msg.Sender.UserId != ctx.User.UserId))
ctx.Connection.SendPacket(new DeleteMessageNotFoundErrorPacket(Sender));
else
Messages.Delete(ctx.User, msg);
});
return true;
}
}
}