sharp-chat/SharpChat/Commands/RankChannelCommand.cs

using SharpChat.Packet;
using System.Linq;

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

            if(!ctx.Args.Any() || !int.TryParse(ctx.Args.First(), out int chanHierarchy) || chanHierarchy > ctx.User.Rank) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.INSUFFICIENT_HIERARCHY));
                return;
            }

            lock(ctx.Chat.ChannelsAccess)
                ctx.Chat.UpdateChannel(ctx.Channel, hierarchy: chanHierarchy);
            ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.CHANNEL_HIERARCHY_CHANGED, false));
        }
    }
}