Occupants.cs

using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Waher.IoTGateway;
using Waher.Persistence;
 
namespace Waher.Service.IoTBroker.Admin.Muc
{
    public class Occupants : CommandOneParameter
    {
        public Occupants()
            : base()
        {
        }
 
        public override string Name => "Occupants";
 
        public override string[] HelpParagraphs => new string[]
        {
            "Lists occupants in a room named `ROOM`."
        };
 
        public override string ParameterName => "ROOM";
 
        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 _))
            {
                await ResponseCallback("Not occupant of room.", string.Empty);
                return;
            }
 
            KeyValuePair<CaseInsensitiveString, Networking.XMPP.MUC.UserPresenceEventArgs>[] Occupants =
                XmppServerModule.Instance.GetOccupants(Arguments[0]);
 
            if ((Occupants?.Length ?? 0) == 0)
            {
                await ResponseCallback("No occupants in room.", string.Empty);
                return;
            }
 
            StringBuilder Response = new StringBuilder();
 
            Response.AppendLine("| Occupants in room |||||");
            Response.AppendLine("| Nick-name | Availability | Affiliation | Role | JID |");
            Response.AppendLine("|:----|:----|:----|:----|:----|");
 
            foreach (KeyValuePair<CaseInsensitiveString, Networking.XMPP.MUC.UserPresenceEventArgs> P in Occupants)
            {
                Response.Append("| `");
                Response.Append(P.Key.Value);
                Response.Append("` | `");
                Response.Append(P.Value.Availability.ToString());
                Response.Append("` | ");
 
                if (P.Value.Affiliation.HasValue)
                {
                    Response.Append('`');
                    Response.Append(P.Value.Affiliation.Value.ToString());
                    Response.Append('`');
                }
 
                Response.Append(" | ");
 
                if (P.Value.Role.HasValue)
                {
                    Response.Append('`');
                    Response.Append(P.Value.Role.Value.ToString());
                    Response.Append('`');
                }
 
                Response.Append(" | `");
                Response.Append(P.Value.FullJid);
                Response.AppendLine("` |");
            }
 
            await ResponseCallback(Response.ToString(), string.Empty);
        }
    }
}