sharp-chat/SharpChat/ClientCommands/BanListClientCommand.cs

using SharpChat.Misuzu;
using SharpChat.S2CPackets;

namespace SharpChat.ClientCommands {
    public class BanListClientCommand(MisuzuClient msz) : ClientCommand {
        private readonly MisuzuClient Misuzu = msz ?? throw new ArgumentNullException(nameof(msz));

        public bool IsMatch(ClientCommandContext ctx) {
            return ctx.NameEquals("bans")
                || ctx.NameEquals("banned");
        }

        public void Dispatch(ClientCommandContext ctx) {
            long msgId = ctx.Chat.RandomSnowflake.Next();

            if(!ctx.User.Can(UserPermissions.BanUser | UserPermissions.KickUser)) {
                ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_NOT_ALLOWED, true, $"/{ctx.Name}"));
                return;
            }

            Task.Run(async () => {
                MisuzuBanInfo[]? mbis = await Misuzu.GetBanListAsync();
                if(mbis is null)
                    ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.GENERIC_ERROR, true));
                else
                    ctx.Chat.SendTo(ctx.User, new BanListS2CPacket(
                        msgId,
                        mbis.Where(mbi => mbi.IsBanned && !mbi.HasExpired)
                            .Select(mbi => new BanListS2CPacket.Entry(
                                BanListS2CPacket.Type.UserName, // Misuzu currently only does username bans so we can just do this
                                mbi.UserName ?? $"({mbi.UserId})"
                            ))
                    ));
            }).Wait();
        }
    }
}