using CodeJay.Classes;
using GooglePlayGames;
using GooglePlayGames.BasicApi;
using GooglePlayGames.BasicApi.SavedGame;
using Newtonsoft.Json;
using System;
using UnityEngine;

public class GPGSInfo : MonoBehaviour
{
    public static GPGSInfo Ins;
    private void Awake() { Ins = this; }

    private ISavedGameClient savedGameClient;

    string str_savedata;
    Action<int> act_save, act_load;
    string gamedataname = "mygamedata";

    void Run_act(int status)
    {
        if (act_save != null) act_save(status);
        act_save = null;

        if (act_load != null) act_load(status);
        act_load = null;
    }

    internal void ProcessAuthentication(SignInStatus status)
    {
        if (status == SignInStatus.Success)
        {
            // Continue with Play Games Services
            savedGameClient = PlayGamesPlatform.Instance.SavedGame;
            if (act_save != null) SaveGameAfterLogin();
            else if (act_load != null) LoadGameAfterLogin();
        }
        else
        {
            // Disable your integration with Play Games Services or show a login button
            // to ask users to sign-in. Clicking it should call
            // PlayGamesPlatform.Instance.ManuallyAuthenticate(ProcessAuthentication).

            Run_act(-1);
        }
    }

    public void SaveGame(string data, Action<int> act)
    {
        str_savedata = data;
        act_save = act;
        act_load = null;
        PlayGamesPlatform.Instance.ManuallyAuthenticate(ProcessAuthentication);
    }
    void SaveGameAfterLogin()
    {
        if (savedGameClient != null)
        {
            byte[] byteData = System.Text.Encoding.UTF8.GetBytes(str_savedata);

            savedGameClient.OpenWithAutomaticConflictResolution(
                gamedataname,
                DataSource.ReadCacheOrNetwork,
                ConflictResolutionStrategy.UseLongestPlaytime,
                (status, metadata) => OnSavedGameOpenedForSave(status, metadata, byteData));
        }
        else
            Run_act(-1);
    }

    private void OnSavedGameOpenedForSave(SavedGameRequestStatus status, ISavedGameMetadata game, byte[] data)
    {
        if (status == SavedGameRequestStatus.Success)
            savedGameClient.CommitUpdate(game, new SavedGameMetadataUpdate.Builder().Build(), data, OnGameSaved);
        else
            Run_act(-1);
    }

    private void OnGameSaved(SavedGameRequestStatus status, ISavedGameMetadata game)
    {
        Run_act(status == SavedGameRequestStatus.Success ? 0 : -1);
    }

    public void LoadGame(Action<int> act)
    {
        act_save = null;
        act_load = act;
        PlayGamesPlatform.Instance.ManuallyAuthenticate(ProcessAuthentication);
    }
    void LoadGameAfterLogin()
    {
        if (savedGameClient != null)
        {
            savedGameClient.OpenWithAutomaticConflictResolution(
            gamedataname,
            DataSource.ReadCacheOrNetwork,
            ConflictResolutionStrategy.UseLongestPlaytime,
            (status, metadata) => OnSavedGameOpenedForLoad(status, metadata));
        }
        else
            Run_act(-1);
    }

    private void OnSavedGameOpenedForLoad(SavedGameRequestStatus status, ISavedGameMetadata game)
    {
        if (status == SavedGameRequestStatus.Success)
            savedGameClient.ReadBinaryData(game, OnGameLoaded);
        else
            Run_act(-1);
    }

    private void OnGameLoaded(SavedGameRequestStatus status, byte[] data)
    {
        if (status == SavedGameRequestStatus.Success)
        {
            if (data != null && data.Length > 0)
            {
                string loadedData = System.Text.Encoding.UTF8.GetString(data);
                GameManager.DB.Set_SaveData(JsonConvert.DeserializeObject<SaveData>(loadedData));
                Run_act(0);
            }
            else
                Run_act(-2);
        }
        else
            Run_act(-1);
    }
}