using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using AOT;
using UnityEngine;
using UnityEngine.UI;

public class WalletPanel : MonoBehaviour
{
  private static ILogger logger = Debug.unityLogger;
  private float update = 0.0f;
  private float tickRate = 1/30;
  private static bool walletInited = false;
  private static bool reqBegin = false;

  // 用于保存调用js方法的callback
  private static readonly Dictionary<string, Action<string>>
    requestCallback = new Dictionary<string, Action<string>>();

  private static string TAG = "JCWallet";

  // 钱包env初始化结束的事件名
  private static string WALLET_INIT_EVENT = "wallet_init_event";


#if UNITY_IOS || UNITY_IPHONE
  private const string DLL_NAME = "__Internal";
#else
  private const string DLL_NAME = "cocos2djs";
#endif


  // Start is called before the first frame update
  void Start()
  {
    // AndroidJNIHelper.debug = true;
    Application.runInBackground = true;
    registWalletEventDelegate (walletEvent);
    SetAndrodCallback _setAndrodCallback = new SetAndrodCallback();
    AndroidJavaClass jc = new AndroidJavaClass("com.jc.jcfw.JcSDK");
    jc.CallStatic("initCommonCB", _setAndrodCallback);
  }

  // Update is called once per frame
  void FixedUpdate(){
    //Time.deltaTime
    if (walletInited && reqBegin) {
      tick(Time.deltaTime);
    }
    // update += Time.deltaTime;
    // if (walletInited && update > tickRate) {
    //   update = 0.0f;
    //   tick();
    // }
    
  }

  public class SetAndrodCallback : AndroidJavaProxy
  {
    public SetAndrodCallback() :
      base("com.jc.jcfw.UnityCallback")
    {
    }

    public void nativeCallback(string funId, string msg, int type)
    {
      Debug.Log("From Android: funId: " + funId + " msg: " + msg + " type: " + type);
      if (type == 0 && requestCallback.ContainsKey(funId)){
        requestCallback[funId](msg);
      } else if (type == 1) {
        // TODO::TEST 
        string[] paramList = new [] { msg };
        int result = runWalletMethod(funId, "nativeCallback", 1, paramList);
      }
    }
  }

  public delegate void WalletCallback(string jsonStr);

  /**
   * 初始换钱包环境
   * 该方法只需调用一次
   * 钱包任何操作之前须保证该方法已正常调用
   */
  public static void initWalletEnv(WalletCallback callback){
    requestCallback[WALLET_INIT_EVENT] = (data) =>{
      Debug.Log("wallet env inited: ");
      walletInited = true;
      callback (data);
    };
    initEnv();
  }

  /**
   * 调用main.js中定义好的js方法
   * @param methodName: 调用的方法名
   * @param paramList:  所有参数都放在string数组中, 没参数的话就传new string[0]
   * @param callback: unity进程收到js执行结果事件后, 会调用callback方法 
   */
  public static void callWalletMethod(
      string methodName,
      string[] paramList,
      WalletCallback callback
      ){
    if (methodName == "initWallet") {
      reqBegin = true;
    }
    string funId = System.Guid.NewGuid().ToString();
    logger.Log(TAG, "wallet method : " + methodName + " ID: " + funId);
    requestCallback[funId] = (data) =>{
      callback (data);
    };
    int result = runWalletMethod(funId, methodName, paramList.Length, paramList);
    if (result == 0){
      requestCallback.Remove (funId);
    }
  }

  // begin of wallet event
  // 用于接收js端返回的数据
  [MonoPInvokeCallback(typeof (WalletEventDelegate))]
  static void walletEvent(IntPtr name, IntPtr message)
  {
    string funId = Marshal.PtrToStringAnsi(name);
    string msg = Marshal.PtrToStringAnsi(message);
    string s_msg = "Wallet Event::";
    s_msg += "ID: " + funId;
    s_msg += " MSG: " + msg;
    logger.Log (TAG, s_msg);
    if (requestCallback.ContainsKey(funId)){
      requestCallback[funId](msg);
      // 这里有些情况下会导致crash, 待想到好的办法后再处理
      // requestCallback.Remove (funId);
    }
  }

  public delegate void WalletEventDelegate(IntPtr name, IntPtr message);

  // 注册wallet event事件回调
  [DllImport(DLL_NAME)]
  public static extern void registWalletEventDelegate(WalletEventDelegate bt);

  // end of wallet event
  [DllImport(DLL_NAME)]
  public static extern void initEnv();

  [DllImport(DLL_NAME)]
  public static extern void tick(float dt);

  // 通用的wallet方法调用,
  [DllImport(DLL_NAME)]
  public static extern int
    runWalletMethod(
        string funId,
        string methodName,
        int paramCount,
        string[] paramList
        );
}