using System;
using System.Collections.Generic;
using System.Threading;
using libsecondlife;

namespace libsecondlife.Utilities
{
    public partial class VoiceManager
    {
        /// <summary>Amount of time to wait for the voice daemon to respond.
        /// The value needs to stay relatively high because some of the calls
        /// require the voice daemon to make remote queries before replying</summary>
        public int BlockingTimeout = 30 * 1000;

        protected Dictionary<int, AutoResetEvent> Events = new Dictionary<int, AutoResetEvent>();

        public List<string> CaptureDevices()
        {
            AutoResetEvent evt = new AutoResetEvent(false);
            Events[_CommandCookie] = evt;

            if (RequestCaptureDevices() == -1)
            {
                Events.Remove(_CommandCookie);
                return new List<string>();
            }

            if (evt.WaitOne(BlockingTimeout, false))
                return CurrentCaptureDevices();
            else
                return new List<string>();
        }

        public List<string> RenderDevices()
        {
            AutoResetEvent evt = new AutoResetEvent(false);
            Events[_CommandCookie] = evt;

            if (RequestRenderDevices() == -1)
            {
                Events.Remove(_CommandCookie);
                return new List<string>();
            }

            if (evt.WaitOne(BlockingTimeout, false))
                return CurrentRenderDevices();
            else
                return new List<string>();
        }

        public string CreateConnector(out int status)
        {
            status = 0;

            AutoResetEvent evt = new AutoResetEvent(false);
            Events[_CommandCookie] = evt;

            if (RequestCreateConnector() == -1)
            {
                Events.Remove(_CommandCookie);
                return String.Empty;
            }

            bool success = evt.WaitOne(BlockingTimeout, false);
            status = statusCode;

            if (success && statusCode == 0)
                return connectorHandle;
            else
                return String.Empty;
        }

        public string Login(string accountName, string password, string connectorHandle, out int status)
        {
            status = 0;

            AutoResetEvent evt = new AutoResetEvent(false);
            Events[_CommandCookie] = evt;

            if (RequestLogin(accountHandle, password, connectorHandle) == -1)
            {
                Events.Remove(_CommandCookie);
                return String.Empty;
            }

            bool success = evt.WaitOne(BlockingTimeout, false);
            status = statusCode;

            if (success && statusCode == 0)
                return accountHandle;
            else
                return String.Empty;
        }

        protected void RegisterCallbacks()
        {
            OnCaptureDevices += new DevicesCallback(VoiceManager_OnCaptureDevices);
            OnRenderDevices += new DevicesCallback(VoiceManager_OnRenderDevices);
            OnConnectorCreated += new ConnectorCreatedCallback(VoiceManager_OnConnectorCreated);
            OnLogin += new LoginCallback(VoiceManager_OnLogin);
        }

        #region Callbacks

        private void VoiceManager_OnCaptureDevices(int cookie, int statusCode, string statusString, string currentDevice)
        {
            if (Events.ContainsKey(cookie))
                Events[cookie].Set();
        }

        private void VoiceManager_OnRenderDevices(int cookie, int statusCode, string statusString, string currentDevice)
        {
            if (Events.ContainsKey(cookie))
                Events[cookie].Set();
        }

        private void VoiceManager_OnConnectorCreated(int cookie, int statusCode, string statusString, string connectorHandle)
        {
            if (Events.ContainsKey(cookie))
                Events[cookie].Set();
        }

        private void VoiceManager_OnLogin(int cookie, int statusCode, string statusString, string accountHandle)
        {
            if (Events.ContainsKey(cookie))
                Events[cookie].Set();
        }

        #endregion Callbacks
    }
}