Leave.cs

using System.Text;
using System.Threading.Tasks;
using Waher.IoTGateway;
 
namespace Waher.Service.IoTBroker.Admin.Muc
{
    public class Leave : CommandOneParameter
    {
        public Leave()
            : base()
        {
        }
 
        public override string Name => "Leave";
 
        public override async Task Execute(ChatState State, string[] Arguments, string OrgMessage, ResponseCallbackHandler ResponseCallback)
        {
            if (Gateway.MucClient is null)
            {
                await ResponseCallback("Multi-User Chat disabled.", string.Empty);
                return;
            }
 
            Enter.ParseRoom(Arguments[0], out string RoomId, out string Domain);
 
            if (!XmppServerModule.Instance.TryGetNickName(RoomId, Domain, out string NickName))
            {
                await ResponseCallback("Not occupant of room.", string.Empty);
                return;
            }
 
            await Gateway.MucClient.LeaveRoom(RoomId, Domain, NickName, async (Sender, e) =>
            {
                if (e.Ok)
                {
                    StringBuilder sb = new StringBuilder();
 
                    sb.Append("Left room `");
                    sb.Append(e.RoomId);
                    sb.Append('@');
                    sb.Append(e.Domain);
                    sb.Append("`.");
 
                    await ResponseCallback(sb.ToString(), string.Empty);
                }
                else
                    await ResponseCallback(string.IsNullOrEmpty(e.ErrorText) ? "Unable to leave room." : e.ErrorText, string.Empty);
 
            }, null);
 
            await XmppServerModule.Instance.LeaveRoom(RoomId, Domain);
        }
 
        public override string ParameterName => "ROOM";
 
        public override string[] HelpParagraphs => new string[] { "Leaves a Multi-User Chat Room named `ROOM`." };
    }
}