using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;

namespace OpenMetaverse.TestClient
{
    public class ImCommand : Command
    {
        string ToAvatarName = string.Empty;
        ManualResetEvent NameSearchEvent = new ManualResetEvent(false);
        Dictionary<string, UUID> Name2Key = new Dictionary<string, UUID>();

        public ImCommand(TestClient testClient)
        {
            testClient.Avatars.AvatarPickerReply += Avatars_AvatarPickerReply;

            Name = "im";
            Description = "Instant message someone. Usage: im [firstname] [lastname] [message]";
            Category = CommandCategory.Communication;
        }
        
        public override string Execute(string[] args, UUID fromAgentID)
        {
            if (args.Length < 3)
                return "Usage: im [firstname] [lastname] [message]";

            ToAvatarName = args[0] + " " + args[1];

            // Build the message
            string message = string.Empty;
            for (int ct = 2; ct < args.Length; ct++)
                message += args[ct] + " ";
            message = message.TrimEnd();
            if (message.Length > 1023) message = message.Remove(1023);

            if (!Name2Key.ContainsKey(ToAvatarName.ToLower()))
            {
                // Send the Query
                Client.Avatars.RequestAvatarNameSearch(ToAvatarName, UUID.Random());

                NameSearchEvent.WaitOne(6000, false);
            }

            if (Name2Key.ContainsKey(ToAvatarName.ToLower()))
            {
                UUID id = Name2Key[ToAvatarName.ToLower()];

                Client.Self.InstantMessage(id, message);
                return "Instant Messaged " + id + " with message: " + message;
            }
            else
            {
                return "Name lookup for " + ToAvatarName + " failed";
            }
        }

        void Avatars_AvatarPickerReply(object sender, AvatarPickerReplyEventArgs e)
        {
            foreach (var kvp in e.Avatars.Where(kvp => string.Equals(kvp.Value, ToAvatarName, StringComparison.CurrentCultureIgnoreCase)))
            {
                Name2Key[ToAvatarName.ToLower()] = kvp.Key;
                NameSearchEvent.Set();
                return;
            }
        }
    }
}