sharp-chat/SharpChat/Commands/DeleteMessageCommand.cs

40 lines
1.6 KiB
C#

using SharpChat.Events;
using SharpChat.Packet;
using System.Linq;
namespace SharpChat.Commands {
public class DeleteMessageCommand : 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 LegacyCommandResponse(LCR.COMMAND_NOT_ALLOWED, true, $"/{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 LegacyCommandResponse(LCR.COMMAND_FORMAT_ERROR));
return;
}
IChatEvent 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 LegacyCommandResponse(LCR.MESSAGE_DELETE_ERROR));
return;
}
ctx.Chat.Events.RemoveEvent(delMsg);
ctx.Chat.Send(new ChatMessageDeletePacket(delMsg.SequenceId));
}
}
}