using UnityEngine;
using UnityEngine.UI;
using PlayFab;
using PlayFab.ClientModels;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using OneSignalSDK;
using System.Collections;

public class GoogleSignInManager : MonoBehaviour
{
    // private GoogleSignInConfiguration configuration;
    public Bootstrapper bootstrapper;
    public Button guestLoginButton;
    
    void Awake()
    {
        Application.quitting += SyncPlayerPrefsToPlayFabOnQuit;
    }

    void Start()
    {
        guestLoginButton.onClick.RemoveAllListeners();
        guestLoginButton.onClick.AddListener(GuestLogin);

        if (PlayerPrefs.HasKey("GuestMode"))
        {
            Debug.Log("Guest mode previously selected. Letting user choose again.");
            guestLoginButton.gameObject.SetActive(true);
        }
        else
        {
            Debug.Log("No login info found. Showing login options.");
            guestLoginButton.gameObject.SetActive(true);
        }
    }

    public void GuestLogin()
    {
        Debug.Log("Starting game in Guest Mode...");
        SafePlayerPrefs.SetInt("GuestMode", 1);
        PlayerPrefs.Save();

        guestLoginButton.gameObject.SetActive(false);

        PlayFabSettings.staticSettings.TitleId = GameConstants.PlayfabTitleId;

        string customId = SystemInfo.deviceUniqueIdentifier;
        SafePlayerPrefs.SetString("GuestCustomID", customId); // Save customId

        var request = new LoginWithCustomIDRequest
        {
            CustomId = customId,
            CreateAccount = true
        };

        PlayFabClientAPI.LoginWithCustomID(request, result =>
        {
            Debug.Log("✅ Guest Login Success! PlayFab ID: " + result.PlayFabId);
            SafePlayerPrefs.SetString("PlayFabID", result.PlayFabId);
            PlayerPrefs.Save();

            if (result.NewlyCreated)
            {
                SafePlayerPrefs.SetInt("NeedsDisplayNameUpload", 1);
                PlayerPrefs.Save();
            }

            bootstrapper.StartGame();
        },
        error =>
        {
            Debug.LogError("❌ Guest PlayFab login failed: " + error.GenerateErrorReport());
            guestLoginButton.gameObject.SetActive(true);
        });
    }

    public void SignInWithGoogle()
    {
        PlayerPrefs.DeleteKey("GuestMode");
        PlayerPrefs.DeleteAll();
        PlayerPrefs.Save();

        guestLoginButton.interactable = false;

    }
    
    private void LoginToPlayFab(string authCode)
    {
        PlayFabSettings.staticSettings.TitleId = GameConstants.PlayfabTitleId;
        var request = new LoginWithGoogleAccountRequest
        {
            TitleId = GameConstants.PlayfabTitleId,
            ServerAuthCode = authCode,
            CreateAccount = true
        };

        PlayFabClientAPI.LoginWithGoogleAccount(request, OnPlayFabLoginSuccess, OnPlayFabLoginFailure);
    }

    private void OnPlayFabLoginSuccess(LoginResult result)
    {
        Debug.Log("✅ PlayFab Login Success! PlayFab ID: " + result.PlayFabId);

        SafePlayerPrefs.SetString("PlayFabID", result.PlayFabId);
        PlayerPrefs.Save();

        OneSignal.Login(result.PlayFabId);
        StartCoroutine(SaveOneSignalPlayerIdToPlayFab());

        LoadPlayerPrefsFromPlayFab(() =>
        {
            guestLoginButton.gameObject.SetActive(false);
            bootstrapper.StartGame();
        });
    }

    private IEnumerator SaveOneSignalPlayerIdToPlayFab()
    {
        yield return new WaitForSeconds(1f);

        string playerId = OneSignal.User.PushSubscription.Id;

        if (!string.IsNullOrEmpty(playerId))
        {
            Debug.Log("✅ Got OneSignal Player ID: " + playerId);

            var request = new UpdateUserDataRequest
            {
                Data = new Dictionary<string, string>
                {
                    { "OneSignalPlayerId", playerId }
                }
            };

            PlayFabClientAPI.UpdateUserData(request,
                result => Debug.Log("✅ Saved OneSignal Player ID to PlayFab"),
                error => Debug.LogError("❌ Failed to save OneSignal Player ID: " + error.GenerateErrorReport()));
        }
        else
        {
            Debug.LogWarning("⚠️ OneSignal Player ID not available yet.");
        }
    }

    private void OnPlayFabLoginFailure(PlayFabError error)
    {
        Debug.LogError("❌ PlayFab Login Failed: " + error.GenerateErrorReport());
        
        guestLoginButton.gameObject.SetActive(true);
        guestLoginButton.interactable = true;
    }

    private void LoadPlayerPrefsFromPlayFab(Action onComplete)
    {
        PlayFabClientAPI.GetUserData(new GetUserDataRequest(), result =>
        {
            if (result.Data != null)
            {
                foreach (var entry in result.Data)
                {
                    string key = entry.Key;
                    string rawValue = entry.Value.Value;

                    if (rawValue.StartsWith("int:") && int.TryParse(rawValue.Substring(4), out int i))
                        SafePlayerPrefs.SetInt(key, i);
                    else if (rawValue.StartsWith("float:") && float.TryParse(rawValue.Substring(6), out float f))
                        SafePlayerPrefs.SetFloat(key, f);
                    else if (rawValue.StartsWith("string:"))
                        SafePlayerPrefs.SetString(key, rawValue.Substring(7));
                    else
                        SafePlayerPrefs.SetString(key, rawValue);

                    PlayerPrefsKeys.RegisterKey(key);
                }
                PlayerPrefs.Save();
            }

            onComplete?.Invoke();
        },
        error =>
        {
            Debug.LogError("❌ Failed to load SafePlayerPrefs from PlayFab: " + error.GenerateErrorReport());
            onComplete?.Invoke();
        });
    }

    private void SyncPlayerPrefsToPlayFabOnQuit()
    {
        if (PlayerPrefs.GetInt("GuestMode", 0) == 1) return;

        Dictionary<string, string> allPrefs = new Dictionary<string, string>();
        foreach (var key in PlayerPrefsKeys.GetAllKeys())
        {
            allPrefs[key] = PlayerPrefs.GetString(key);
        }

        var request = new UpdateUserDataRequest
        {
            Data = allPrefs
        };

        if (PlayFabClientAPI.IsClientLoggedIn())
        {
            PlayFabClientAPI.UpdateUserData(request,
                result => Debug.Log("✅ Synced SafePlayerPrefs to PlayFab on quit."),
                error => Debug.LogError("❌ Failed to sync SafePlayerPrefs: " + error.GenerateErrorReport()));
        }
    }

    public void SignOut()
    {
        // 1) Clear PlayFab session in memory
        PlayFabClientAPI.ForgetAllCredentials();

        // 2) Delete every PlayerPref we’ve registered
        foreach (var key in PlayerPrefsKeys.GetAllKeys())
            PlayerPrefs.DeleteKey(key);
        // Also remove any extra cruft
        PlayerPrefs.DeleteKey("GuestMode");
        PlayerPrefs.DeleteKey("GuestCustomID");
        PlayerPrefs.Save();

        // 3) Sign out of Google

        // 4) Unlink OneSignal from this user
        OneSignal.Logout();

        // 5) Bring back your login buttons
        guestLoginButton.gameObject.SetActive(true);
        guestLoginButton.interactable = true;

        Debug.Log("✅ User fully signed out.");
    }

}