using SharpChat.S2CPackets;

namespace SharpChat.Commands {
    public class RankChannelCommand : IChatCommand {
        public bool IsMatch(ChatCommandContext ctx) {
            return ctx.NameEquals("rank")
                || ctx.NameEquals("privilege")
                || ctx.NameEquals("priv");
        }

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

            if(!ctx.User.Can(ChatUserPermissions.SetChannelHierarchy) || ctx.Channel.IsOwner(ctx.User)) {
                ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_NOT_ALLOWED, true, $"/{ctx.Name}"));
                return;
            }

            if(ctx.Args.Length < 1 || !int.TryParse(ctx.Args.First(), out int chanHierarchy) || chanHierarchy > ctx.User.Rank) {
                ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.INSUFFICIENT_HIERARCHY));
                return;
            }

            ctx.Chat.UpdateChannel(ctx.Channel, hierarchy: chanHierarchy);
            ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.CHANNEL_HIERARCHY_CHANGED, false));
        }
    }
}