using System;
using System.Collections.Generic;
using System.Threading;
using System.Diagnostics;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.Log;
using PunkHPX8_Core;
using System.Reflection;
using DocumentFormat.OpenXml.Wordprocessing;

namespace Aitex.Core.RT.Fsm
{
    public class Entity
    {
        protected Thread thread = null;
        protected IStateMachine fsm = null;
        
        public bool Running { get; protected set;}
        /// <summary>
        /// 剩余时长ToReady 
        /// </summary>
        public virtual int TimeToReady
        {
            get { return int.MaxValue / 2; }
        }

        public Entity()
        {
        }

        public bool Initialize()
        {
            Init();
            if (fsm != null)
            {
                fsm.Start();
                thread = new Thread(new ThreadStart(fsm.Loop));
                thread.Name = fsm.Name;
                thread.Start();
                LOG.WriteLog(eEvent.EV_SCHEDULER, "System", $"Create Entity Thread {fsm.Name}");
                while (!thread.IsAlive)
                    Thread.Sleep(1);
            }


            return true;
        }

        public void Terminate()
        {
            if (fsm != null)
            {
                fsm.Stop();
            }

            Term();
        

            if (thread!=null&&thread.IsAlive)
            {
                Thread.Sleep(100);
                if (thread.IsAlive)
                {
                    try
                    {
                        thread.Abort();
                    }
                    catch (Exception ex)
                    {
                        LOG.WriteExeption(String.Format("Entity terminate has exception."), ex);
                    }
                }
            }
            //Term();
        }

        protected virtual bool Init()
        {
            return true;
        }

        protected virtual void Term()
        { 
        }

        protected void Transition<T, V>(T state, V msg, FsmFunc func, T next)
        {
            Debug.Assert(typeof(T).IsEnum && typeof(V).IsEnum);

            int _state = Convert.ToInt32(state);
            int _next = Convert.ToInt32(next);
            int _msg = Convert.ToInt32(msg);

            Transition(_state, _msg, func, _next);
        }

        protected void Transition<T,V>(T state,V msg,FsmFunc func,FsmFunc waitFunc,T next)
        {
            Debug.Assert(typeof(T).IsEnum && typeof(V).IsEnum);

            int _state = Convert.ToInt32(state);
            int _next = Convert.ToInt32(next);
            int _msg = Convert.ToInt32(msg);

            Transition(_state, _msg, func,waitFunc, _next);
        }

        protected void Transition(int state, int msg, FsmFunc func, int next)
        {
            if (fsm != null)
                fsm.Transition(state, msg, func, next);
        }

        protected void Transition(int state, int msg, FsmFunc func,FsmFunc waitFunc, int next)
        {
            if (fsm != null)
                fsm.Transition(state, msg, func,waitFunc, next);
        }

        protected void AnyStateTransition(int msg, FsmFunc func, int next)
        {
            if (fsm != null)
                fsm.AnyStateTransition(msg, func, next);
        }

        //protected void AnyStateTransition(int msg, FsmFunc func, int next, FsmFunc monitorFunc)
        //{
        //    if (fsm != null)
        //        fsm.AnyStateTransition(msg, func, next,monitorFunc);
        //}

        protected void AnyStateTransition<T, V>(V msg, FsmFunc func, T next)
        {
            Debug.Assert(typeof(T).IsEnum && typeof(V).IsEnum);

            int _next = Convert.ToInt32(next);
            int _msg = Convert.ToInt32(msg);
            AnyStateTransition(_msg, func, _next);

        }
        protected void AnyStateTransition<T, V>(V msg, FsmFunc func, T next, FsmFunc monitorFunc)
        {
            Debug.Assert(typeof(T).IsEnum && typeof(V).IsEnum);

            int _next = Convert.ToInt32(next);
            int _msg = Convert.ToInt32(msg);
            AnyStateTransition(_msg, func, _next,  monitorFunc);

        }
        protected void EnterExitTransition<T, V>(T state, FsmFunc enter, Nullable<V> msg, FsmFunc exit) where V : struct
        {
            Debug.Assert(typeof(T).IsEnum && ((msg == null) || typeof(V).IsEnum));

            int _state = Convert.ToInt32(state);

            int _msg = msg == null ? (int)FSM_MSG.NONE : Convert.ToInt32(msg);
            EnterExitTransition(_state, enter, _msg, exit);
        }

        protected void EnterExitTransition(int state, FsmFunc enter, int msg, FsmFunc exit)
        {
            if (fsm != null)
                fsm.EnterExitTransition(state, enter, msg, exit);
        }


        public void PostMsg<T>(T msg, params object[] args) where T : struct
        {
            Debug.Assert(typeof(T).IsEnum);
            int id = Convert.ToInt32(msg);
            PostMsg(id, args);
        }

        public void PostMsg(int msg, params object[] args)
        {
            if (fsm == null)
            {
                //LOG.Error($"fsm is null, post msg {msg}");
                return;
            }
 
            fsm.PostMsg(msg, args);
        }

        public bool CheckToPostMessage<T,V>(eEvent eEvent,string moduleName,int msg, params object[] args)
        {
            string state = Enum.GetName(typeof(T), fsm.State);
            string strMsg = Enum.GetName(typeof(V), msg);
            if (!fsm.FindTransition(fsm.State, msg))
            {
                LOG.WriteLog(eEvent, moduleName, $"{moduleName} is in {state} state，can not do {strMsg}");
                return false;
            }

            Running = true;
            fsm.PostMsg(msg, args);
            LOG.WriteLog(eEvent.EV_FSM_NOTIFY, moduleName, $"{moduleName} is in {state} state，do {strMsg}");
            return true;
        }
        public bool NullFunc(object[] param)
        {
            return true;
        }
    }
}