using System.Collections.Generic;
using ILRuntime.CLR.Method;
using ILRuntime.Runtime.Enviorment;
using ILRuntime.Runtime.Intepreter;
using UnityEngine;


/// <summary>
/// 热更工程使用monovehavior的基础代理类
/// </summary>
public class ILBehaviourProxy : WidgetBehavior
{
    [SerializeField]
    [Tooltip("Logic工程的代码，例：命名空间.类名")]
    List<string> classNames;
    Dictionary<string, ILBehaviourHolder> ilBehaviourHolders = new Dictionary<string, ILBehaviourHolder>();
    AppDomain appDomain {
        get { return ILLauncherProxy.Instance.appdomain; }
    }

    private void Init()
    {
        InitWidgts();
        ilBehaviourHolders.Clear();
        var baseType = appDomain.LoadedTypes["ILBehaviour"];
        foreach (var name in classNames)
        {
            if (ilBehaviourHolders.ContainsKey(name))
            {
                DebugEx.LogErrorFormat("ILBehaviour 脚本代码有重复项：{0}", name);
                continue;
            }
            var obj = appDomain.Instantiate(name);
            if (obj == null)
            {
                DebugEx.LogErrorFormat("ILBehaviour 脚本代码不存在：{0}", name);
                continue;
            }
            var setProxy = baseType.GetMethod("SetProxy", 1);
            appDomain.Invoke(setProxy, obj, this);//将当前代理对象传过去

            var holder = new ILBehaviourHolder(obj);

            //此处用type获取的方法，子类不定义是不会执行Logic工程父类的方法
            var type = obj.Type;

            holder.awake = type.GetMethod("Awake");
            holder.start = type.GetMethod("Start");
            holder.onEnable = type.GetMethod("OnEnable");
            holder.onDisable = type.GetMethod("OnDisable");
            holder.update = type.GetMethod("Update");
            holder.fixedUpdate = type.GetMethod("FixedUpdate");
            holder.lateUpdate = type.GetMethod("LateUpdate");
            holder.onDestroy = type.GetMethod("OnDestroy", 0);

            //baseType 获取的方法，才会执行父类Logic工程的父类方法，但同时也不会调用子类重写的方法
            holder.dipose = baseType.GetMethod("Dipose", 0);

            ilBehaviourHolders.Add(name, holder);
        }
    }

    //获取IL热更工程的脚本实例，供热更工程调用，不要在主工程使用
    public object GetILBehaviour(string name)
    {
        ILBehaviourHolder holder;
        if (ilBehaviourHolders.TryGetValue(name, out holder))
            return holder.instance;
        else
            return null;
    }

    private void Awake()
    {
        Init();
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.awake != null)
                    appDomain.Invoke(holder.awake, holder.instance);
            }
        }
    }

    private void Start()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.start != null)
                    appDomain.Invoke(holder.start, holder.instance);
            }
        }
    }

    private void OnEnable()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.onEnable != null)
                    appDomain.Invoke(holder.onEnable, holder.instance);
            }
        }
    }

    private void OnDisable()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.onDisable != null)
                { 
                    appDomain.Invoke(holder.onDisable, holder.instance);
                }    
            }
        }
    }

    private void Update()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.update != null)
                    appDomain.Invoke(holder.update, holder.instance);
            }
        }
    }

    private void FixedUpdate()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.fixedUpdate != null)
                    appDomain.Invoke(holder.fixedUpdate, holder.instance);
            }
        }
    }

    private void LateUpdate()
    {
        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (holder.lateUpdate != null)
                    appDomain.Invoke(holder.lateUpdate, holder.instance);
            }
        }
    }

    private void OnDestroy()
    {

        foreach (var name in classNames)
        {
            ILBehaviourHolder holder;
            if (ilBehaviourHolders.TryGetValue(name, out holder))
            {
                if (appDomain != null && holder.onDestroy != null)
                    appDomain?.Invoke(holder.onDestroy, holder.instance);
                if (appDomain != null && holder.dipose != null)
                    appDomain?.Invoke(holder.dipose, holder.instance);
            }
        }
        ilBehaviourHolders.Clear();
    }

    private class ILBehaviourHolder
    {
        public object instance;
        public IMethod awake, start, onEnable, onDisable, update, fixedUpdate, lateUpdate, onDestroy;
        public IMethod dipose;

        public ILBehaviourHolder(object instance)
        {
            this.instance = instance;
        }
    }

}