#if ENABLE_UNET
using System;
using System.Collections.Generic;

namespace UnityEngine.Networking
{
    internal class NetworkMessageHandlers
    {
        Dictionary<short, NetworkMessageDelegate> m_MsgHandlers = new Dictionary<short, NetworkMessageDelegate>();

        internal void RegisterHandlerSafe(short msgType, NetworkMessageDelegate handler)
        {
            if (handler == null)
            {
                if (LogFilter.logError) { Debug.LogError("RegisterHandlerSafe id:" + msgType + " handler is null"); }
                return;
            }

            if (LogFilter.logDebug) { Debug.Log("RegisterHandlerSafe id:" + msgType + " handler:" + handler.GetMethodName()); }
            if (m_MsgHandlers.ContainsKey(msgType))
            {
                //if (LogFilter.logError) { Debug.LogError("RegisterHandlerSafe id:" + msgType + " handler:" + handler.GetMethodName() + " conflict"); }
                return;
            }
            m_MsgHandlers.Add(msgType, handler);
        }

        public void RegisterHandler(short msgType, NetworkMessageDelegate handler)
        {
            if (handler == null)
            {
                if (LogFilter.logError) { Debug.LogError("RegisterHandler id:" + msgType + " handler is null"); }
                return;
            }

            if (msgType <= MsgType.InternalHighest)
            {
                if (LogFilter.logError) { Debug.LogError("RegisterHandler: Cannot replace system message handler " + msgType); }
                return;
            }

            if (m_MsgHandlers.ContainsKey(msgType))
            {
                if (LogFilter.logDebug) { Debug.Log("RegisterHandler replacing " + msgType); }

                m_MsgHandlers.Remove(msgType);
            }
            if (LogFilter.logDebug) { Debug.Log("RegisterHandler id:" + msgType + " handler:" + handler.GetMethodName()); }
            m_MsgHandlers.Add(msgType, handler);
        }

        public void UnregisterHandler(short msgType)
        {
            m_MsgHandlers.Remove(msgType);
        }

        internal NetworkMessageDelegate GetHandler(short msgType)
        {
            if (m_MsgHandlers.ContainsKey(msgType))
            {
                return m_MsgHandlers[msgType];
            }
            return null;
        }

        internal Dictionary<short, NetworkMessageDelegate> GetHandlers()
        {
            return m_MsgHandlers;
        }

        internal void ClearMessageHandlers()
        {
            m_MsgHandlers.Clear();
        }
    }
}

#endif //ENABLE_UNET