using UnityEngine;
#if UNITY_IOS && !UNITY_EDITOR
using System.Runtime.InteropServices;
#endif

namespace BF
{
    public class GameLaunchManager : ManagerBase
    {
#if UNITY_IOS && !UNITY_EDITOR
        [DllImport("__Internal")] 
        private static extern void IOS_ATTrack();
#endif

        public LaunchRequester LaunchRequester { get; private set; }
        public int LaunchTimes { get; private set; }
        public bool LoadedFirstAb = false;

        GameLaunchProcessorBase currentProcessor;

        static GameLaunchManager instance;

        public static GameLaunchManager Create()
        {
            BFLog.LogAssert(instance == null, "This method only allows BFMain to call once");
            instance = new GameLaunchManager();
            return instance;
        }

        GameLaunchManager() { }

        public override void SetMono(MonoBehaviour mono)
        {
            base.SetMono(mono);
        }

        public override void Init()
        {
            LaunchRequester = new LaunchRequester();
            LaunchTimes = 0;
        }

        public override void Update()
        {
            if (currentProcessor != null)
            {
                currentProcessor.Update();
            }
        }

        public override void Destroy()
        {
        }

        /// <summary>
        /// 游戏启动入口
        /// </summary>
        public void LaunchGame()
        {
#if UNITY_IOS && !UNITY_EDITOR
            IOS_ATTrack();
#endif
            LaunchTimes++;
#if USE_AB
            GameLaunchProcessorBase processor = new LaunchSuccProcessor();

            BFMain.IsStandAlone = false;
            processor = new FixUpProcessor(processor);
            processor = new DownloadUpdateProcessor(processor);
            processor = new CalculateDiffProcessor(processor);
            processor = new OnGetVersionProcessor(processor);
            processor = new RequestVersionProcessor(processor);
            processor = new PreCheckProcessor(processor);
            processor = new FirstABProcessor(processor);
            processor = new PrepareProcessor(processor);
            processor.Process(LaunchRequester);
#else
            GameLaunchProcessorBase processor = new LaunchSuccProcessor();
            processor = new RequestLoginCenterConfigProcessor(processor);
            processor.Process(LaunchRequester);
#endif
        }

        /// <summary>
        /// 选服拉更新时版本不一致调用，除首包外的资源和lua全部要卸载掉
        /// </summary>
        public void LaunchForLogin(string versionJson)
        {
            LaunchTimes++;
            GameLaunchProcessorBase processor = new LaunchSuccProcessor();
            processor = new FixUpProcessor(processor);
            processor = new DownloadUpdateProcessor(processor);
            processor = new CalculateDiffProcessor(processor);
            processor = new OnGetVersionProcessor(processor);

            LaunchRequester.SetVersionInfo(versionJson);
            processor.Process(LaunchRequester);

            BFLog.LogDebug(BFLog.DEBUG_GAME_LAUNCH, "green", "LaunchForLogin " + versionJson);
        }

        /// <summary>
        /// 游戏过程中踢下线再登陆时版本不一致调用，要卸载掉所有资源和lua，重新把首包加回来
        /// </summary>
        public void LaunchForRelogin(string versionJson)
        {
            LaunchTimes++;
            GameLaunchProcessorBase processor = new LaunchSuccProcessor();
            processor = new FixUpProcessor(processor);
            processor = new DownloadUpdateProcessor(processor);
            processor = new CalculateDiffProcessor(processor);
            processor = new OnGetVersionProcessor(processor);
            processor = new FirstABProcessor(processor);

            LaunchRequester.SetVersionInfo(versionJson);
            processor.Process(LaunchRequester);

            BFLog.LogDebug(BFLog.DEBUG_GAME_LAUNCH, "green", "LaunchForRelogin " + versionJson);
        }

        /// <summary>
        /// 切语言调用，不用请求版本
        /// </summary>
        public void LaunchForLanguage(string language)
        {
            LaunchTimes++;
            LaunchRequester.isHotUpdate = true;
            LaunchRequester.versionAbcc = LaunchRequester.persistentAbcc;

            GameLaunchProcessorBase processor = new LaunchSuccProcessor();
            processor = new FixUpProcessor(processor);
            processor = new DownloadUpdateProcessor(processor);
            processor = new CalculateDiffProcessor(processor);
            processor = new OnGetVersionProcessor(processor);
            processor = new FirstABProcessor(processor);

            processor.Process(LaunchRequester);
            BFLog.LogDebug(BFLog.DEBUG_GAME_LAUNCH, "green", "LaunchForLanguage " + language);
        }

        public bool IsNetworkReachability()
        {
            return Application.internetReachability != NetworkReachability.NotReachable;
        }

        public bool IsWifi()
        {
            return Application.internetReachability == NetworkReachability.ReachableViaLocalAreaNetwork;
        }

        public void SetCurrentProcessor(GameLaunchProcessorBase processor)
        {
            BFLog.LogDebug(BFLog.DEBUG_GAME_LAUNCH, "green", "current processor " + processor);
            currentProcessor = processor;
        }

        /// <summary>
        /// 是否是白名单版本
        /// </summary>
        public bool IsVersionWhiteList()
        {
            if (BFPlatform.IsPublishChannel())
            {
                return false;
            }
            else
            {
#if SKIP_VERSION
                return true;
#else
                return false;
#endif
            }
        }

        public AssetBundle GetFirstAB()
        {
            return LaunchRequester.firstAb;
        }

        public string GetCurrentVersion()
        {
            if (LaunchRequester.persistentAbcc != null)
            {
                return LaunchRequester.persistentAbcc.version;
            }
#if UNITY_EDITOR && !USE_AB
            return "0.1.0";
#else
            return "";
#endif
        }

        public void QuitGame()
        {
            Application.Quit();
        }

        public static string ForJustice(string str)
        {
            if (!str.StartsWith(BFMain.FILE_HEAD_BASE64))
            {
                return str;
            }
            var bytes = System.Convert.FromBase64String(str);
            var index = 0;
            var headCount = BFMain.FILE_HEAD.Length;
            var bytesCount = bytes.Length;
            var key = BF.Utils.GetFreeChar();
            var keyLength = key.Length;
            var realCount = bytesCount - headCount;
            for (int i = 0; i < realCount; i++)
            {
                bytes[i] = (byte)(bytes[i + headCount] ^ (key[index % key.Length]));
                index++;
                if (index >= keyLength) {
                    index = 0;
                }
            }
            return System.Text.Encoding.UTF8.GetString(bytes, 0, realCount);
        }
    }
}