namespace Guru
{
    using UnityEngine;
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.IO;
    
    public partial class GuruSDK: MonoBehaviour
    {
        public const string Version = "1.0.0";
        public const string Tag = "[Guru]";
        public const string ServicesConfigKey = "guru_services";
        
        private static GuruSDK _instance;
        /// <summary>
        /// 单利引用
        /// </summary>
        public static GuruSDK Instance
        {
            get
            {
                if(null == _instance)
                {
                    _instance = CreateInstance();
                }
                return _instance;
            }
            
        }

        private GuruSDKInitConfig _initConfig;
        private Action<bool> _onCompleteCallback;

        private static GuruSDKModel _model;

        internal static GuruSDKInitConfig InitConfig => Instance._initConfig;
        internal static GuruSDKModel Model => GuruSDKModel.Instance;
        private static GuruServicesConfig _appServicesConfig;
        
        /// <summary>
        /// Debug Mode
        /// </summary>
        public static bool IsDebugMode
        {
            get
            {
#if UNITY_EDITOR || DEBUG
                return true;
#endif
                return false;
            }
        }

        /// <summary>
        /// 初始化成功标志位
        /// </summary>
        public static bool IsInitialSuccess { get; private set; } = false;

        #region 初始化
        
        private static GuruSDK CreateInstance()
        {
            var go = new GameObject(nameof(GuruSDK));
            DontDestroyOnLoad(go);
            _instance = go.AddComponent<GuruSDK>();
            return _instance;
        }

        public static GuruSDKInitConfig BuildConfig(
            bool useCustomConsent = false, 
            bool autoLoadAds = true, 
            bool iapEnabled = true, 
            bool autoRecordFinishedLevels = true, 
            bool showDebugLog = false,
            Dictionary<string, object> defaultRemoteData = null,
            byte[] googleKeys = null,
            byte[] appleRootCerts = null)
        {
            var config = GuruSDKInitConfig.Build(useCustomConsent, autoLoadAds, iapEnabled, 
                autoRecordFinishedLevels, showDebugLog, defaultRemoteData, googleKeys, appleRootCerts);
            return config;
        }

        public static void Init(Action<bool> onComplete)
        {
            Init(GuruSDKInitConfig.Build(), onComplete);
        }
        
        public static void Init(GuruSDKInitConfig config, Action<bool> onComplete)
        {
            LogI($"---- Guru SDK init ----\n{config.ToString()}");
            Instance.StartWithConfig(config, onComplete);
        }


        /// <summary>
        /// 启动SDK
        /// </summary>
        /// <param name="config"></param>
        /// <param name="onComplete"></param>
        private void StartWithConfig(GuruSDKInitConfig config, Action<bool> onComplete)
        {
            Model.PropBLevel.OnValueChanged += OnBLevelChanged;
            Model.PropBPlay.OnValueChanged += OnBPlayChanged;
            
            _initConfig = config;
            _onCompleteCallback = onComplete;
            IsInitialSuccess = false;
            
            //---------- Start Firebase ------------
            FirebaseUtil.InitFirebase(OnFirebaseReady);
            // FirebaseUtil.OnFetchRemoteSuccess+= OnFetchRemoteCallback;
            //---------- Start Facebook ------------
            FBService.Instance.StartService();
        }



        /// <summary>
        /// 开始各种组件初始化
        /// </summary>
        private void OnFirebaseReady()
        {
            if (!InitConfig.UseCustomConsent)
            {
                // LogI($"--- #3 Start Consent Flow ---");
                StartConsentFlow();
            }
            
            if(!string.IsNullOrEmpty(IPMConfig.IPM_UID)) SetUID(IPMConfig.IPM_UID);

            // 开始Remote Manager初始化 
            RemoteConfigManager.Init(BuildDefaultRemoteData(_initConfig.DefaultRemoteData));
            RemoteConfigManager.OnFetchCompleted += OnFetchRemoteCallback;
            
            // 根据上次的云控配置来初始化参数
            SetupServicesConfig();

            IsInitialSuccess = true;
            _onCompleteCallback?.Invoke(true);
        }
        
        /// <summary>
        /// 注入云控参数基础数据
        /// </summary>
        /// <param name="dict"></param>
        /// <returns></returns>
        private Dictionary<string, object> BuildDefaultRemoteData(Dictionary<string, object> dict)
        {
            if (dict == null) dict = new Dictionary<string, object>(3);
            
            // 注入默认的 Services 配置值
            string json = Model.LoadDefaltServicesConfigJson(); 
            if (!string.IsNullOrEmpty(json)) dict[ServicesConfigKey] = json;
       
            return dict;
        }
        
        /// <summary>
        /// 拉取云控参数完成
        /// </summary>
        /// <param name="success"></param>
        private void OnFetchRemoteCallback(bool success)
        {
            LogI($"--- Remote fetch complete: {success} ---");
            ABTestManager.Init(); // 启动AB测试解析器
            Callbacks.Remote._onRemoteFetchComplete?.Invoke(success);
        }
        
        #endregion

        #region App Remote Update

        private void SetupServicesConfig()
        {
            bool useKeywords = true;
            bool useIAP = true;
            var guruSettings = GuruSettings.Instance;
            
            var services = GetRemoteServicesConfig();
            if (services != null)
            {
                _appServicesConfig = services;
                useKeywords = _appServicesConfig.IsKeywordsEnabled();
                
                if (null != guruSettings)
                {
                    if(_appServicesConfig.adjust_settings != null)
                    {    
                        // 更新 Adjust Tokens
                        guruSettings.UpdateAdjustTokens(_appServicesConfig.adjust_settings.AndroidToken
                            ,_appServicesConfig.adjust_settings.iOSToken);
                        // 更新 Adjust Events
                        guruSettings.UpdateAdjustEvents(_appServicesConfig.adjust_settings.events);
                    }
                }
                useIAP = _appServicesConfig.IsIAPEnabled();
            }
            
            // AdjustService.StartService();
            
            if(useIAP) {
                InitIAP(_initConfig.GoogleKeys, _initConfig.AppleRootCerts); // 初始化IAP
            }
            
            if(useKeywords) {
                KeywordsManager.Install(Model.IsIAPUser, Model.SuccessLevelCount); // 启动Keyword管理器
            }
        }


        private GuruServicesConfig GetRemoteServicesConfig()
        {
            var json = GetRemoteString(ServicesConfigKey);
            if (!string.IsNullOrEmpty(json))
            {
                return JsonParser.ToObject<GuruServicesConfig>(json);
            }
            return null;
        }
        #endregion

        #region 数据

        private void OnBLevelChanged(int blevel)
        {
            SetUserBLevel(blevel);
        }

        private void OnBPlayChanged(int bplay)
        {
            SetUserBPlay(bplay);
        }

        public static string UID => _model?.UserId ?? "";

        #endregion
        
        #region Misc
        
        /// <summary>
        /// 打开页面
        /// </summary>
        /// <param name="url"></param>
        public static void OpenURL(string url)
        {
            GuruWebview.OpenPage(url);
        }


        #endregion

        #region Logging
        
        
        public static void LogI(object message)
        {
            Debug.Log($"{Tag} {message}");
        }
        
        public static void LogW(object message)
        {
            Debug.LogWarning($"{Tag} {message}");
        }
        
        public static void LogE(object message)
        {
            Debug.LogError($"{Tag} {message}");
        }

        
        public static void LogException(string message)
        {
            LogException( new Exception($"{Tag} {message}"));
        }
        
        public static void LogException(Exception e)
        {
            Debug.LogException(e);
        }
        
        #endregion

        #region 生命周期

        /// <summary>
        /// 暂停时处理
        /// </summary>
        /// <param name="paused"></param>
        private void OnAppPauseHandler(bool paused)
        {
            if(paused) Model.Save(true); // 强制保存数据
            Callbacks.App._onAppPaused?.Invoke(paused);
        }
        
        private void OnApplicationPause(bool paused)
        {
            OnAppPauseHandler(paused);
        }

        private void OnApplicationFocus(bool hasFocus)
        {
            OnAppPauseHandler(!hasFocus);
        }

        private void OnApplicationQuit()
        {
            Model.Save(true);
            Callbacks.App._onAppQuit?.Invoke();
        }

        #endregion

        #region 延迟处理

        /// <summary>
        /// 启动协程
        /// </summary>
        /// <param name="enumerator"></param>
        /// <returns></returns>
        public static Coroutine DoCoroutine(IEnumerator enumerator)
        {
            return Instance != null ? Instance.StartCoroutine(enumerator) : null;
        }

        public static void KillCoroutine(Coroutine coroutine)
        {
            if(coroutine != null)
                Instance.StopCoroutine(coroutine);
        }


        /// <summary>
        /// 延时执行
        /// </summary>
        /// <param name="seconds"></param>
        /// <param name="callback"></param>
        public static void Delay(float seconds, Action callback)
        {
            DoCoroutine(Instance.OnDelayCall(seconds, callback));
        }

        private IEnumerator OnDelayCall(float delay, Action callback)
        {
            if (delay > 0)
            {
                yield return new WaitForSeconds(delay);
            }
            else
            {
                yield return null;
            }
            callback?.Invoke();
        }


        #endregion
        
    }
}