using SharpChat.SockChat.S2CPackets;

namespace SharpChat.ClientCommands;

public class DeleteChannelClientCommand : ClientCommand {
    public bool IsMatch(ClientCommandContext ctx) {
        return ctx.NameEquals("delchan") || (
            ctx.NameEquals("delete")
            && ctx.Args.FirstOrDefault()?.All(char.IsDigit) == false
        );
    }

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

        if(ctx.Args.Length < 1 || string.IsNullOrWhiteSpace(ctx.Args.FirstOrDefault())) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_FORMAT_ERROR));
            return;
        }

        string delChanName = string.Join('_', ctx.Args);
        Channel? delChan = ctx.Chat.Channels.FirstOrDefault(c => c.NameEquals(delChanName));

        if(delChan == null) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.CHANNEL_NOT_FOUND, true, delChanName));
            return;
        }

        if(!ctx.User.Can(UserPermissions.DeleteChannel) && delChan.IsOwner(ctx.User)) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.CHANNEL_DELETE_FAILED, true, delChan.Name));
            return;
        }

        await ctx.Chat.RemoveChannel(delChan);
        await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.CHANNEL_DELETED, false, delChan.Name));
    }
}