using UnityEngine;
using Firebase;
using UnityEngine.Events;

using System.Threading.Tasks;
using System;


public class FirebaseManager : MonoBehaviour
{
    public Firebase.Auth.FirebaseAuth auth;
    public Firebase.Auth.FirebaseUser user;
    void Start()
    {
        auth = Firebase.Auth.FirebaseAuth.DefaultInstance;
        auth.StateChanged  += AuthStateChanged;
    }
    public async Task<string> Register(string email,string password){
        try{
            var RegisterTask = auth.CreateUserWithEmailAndPasswordAsync(email, password);
            await RegisterTask;
            if(RegisterTask.IsCanceled){
                return "2-取消";
            }else if(RegisterTask.IsFaulted){
                Debug.Log(RegisterTask.Exception.InnerException.Message);
                return "1-"+RegisterTask.Exception.InnerException.Message;
            }else if (RegisterTask.IsCompletedSuccessfully){
                Debug.Log("註冊成功");
                string userID = RegisterTask.Result.User.UserId;
                ulong creationDate = RegisterTask.Result.User.Metadata.CreationTimestamp;
                SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString() ,"遊客", password,"0","","1","0");
                return "0-註冊成功";
            }else{
                Debug.Log("註冊失敗，未知錯誤");
                return "1-未知错误";
            }
        }catch(Exception ex){
            Debug.Log("註冊失敗:" + ex.Message);
            return "1-" + ex.Message;
        }
    }
    public async Task<string> 登入(string email,string password){
        try{
            var signInTask = auth.SignInWithEmailAndPasswordAsync(email, password);
            await signInTask;
            if (signInTask.IsFaulted){
                Debug.Log(signInTask.Exception.InnerException.Message);
                return "1-" + signInTask.Exception.InnerException.Message;
            }else if (signInTask.IsCompletedSuccessfully){
                
                Debug.Log("登录成功!");
                Main.Global.登入條件=0;
                return "0-登录成功!";
            }else{
                Debug.Log("登录失败：未知错误");
                return "1-未知错误";
            }
        }catch (Exception ex){
            Debug.Log("登录失败：" + ex.Message);
            return "1-" + ex.Message;
        }
    }
    public async Task<string> Google登入(string googleIdToken,string googleAccessToken,string passowrd){
        try{
            Firebase.Auth.Credential credential = Firebase.Auth.GoogleAuthProvider.GetCredential(googleIdToken, googleAccessToken);
            var googlesignintask=auth.SignInAndRetrieveDataWithCredentialAsync(credential);
            await googlesignintask;
            if (googlesignintask.IsFaulted) {
                return "1-1."+googlesignintask.Exception.InnerException.Message;
            }else if(googlesignintask.IsCompletedSuccessfully){
                Main.Global.登入條件=1;
                string userID = googlesignintask.Result.User.UserId;
                ulong creationDate = googlesignintask.Result.User.Metadata.CreationTimestamp;
                
                SQL_game_sys.SQL_使用者_查詢暱稱(userID);
                if(SQL_Module.dr.Read()){}else{
                    SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString(),"GOOGLE遊客", passowrd,"0","","0","1");
                }
                return "0";
            }else {
                return "1-2.未知错误";
            }
        }catch (Exception ex){
            return "1-3." + ex.Message;
        }
    }
    public async Task<string> 遊客登入(){
        try{
            var signInTask = auth.SignInAnonymouslyAsync();
            await signInTask;
            if (signInTask.IsCompleted && !signInTask.IsCanceled && !signInTask.IsFaulted){
                Debug.Log("遊客登入成功!");
                string userID = signInTask.Result.User.UserId;
                ulong creationDate = signInTask.Result.User.Metadata.CreationTimestamp;
                Debug.Log(userID);
                SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString() ,"遊客","", "0", "", "0", "0");
                return "0";
            }else{
                Debug.LogError("2-1." + signInTask.Exception);
                return "2-1." + signInTask.Exception;
            }
        }catch (Exception ex){
            Debug.LogError("2-2." + ex.Message);
            return "2-2." + ex.Message;
        }
    }
    public async Task<string> 刪除使用者()
    {
        try
        {
            Firebase.Auth.FirebaseUser currentUser = auth.CurrentUser;
            if (currentUser != null)
            {
                await currentUser.DeleteAsync();
                return "0-使用者資料刪除成功";
            }
            else
            {
                return "1-沒有使用者登入";
            }
        }
        catch (Exception ex)
        {
            return "1-" + ex.Message;
        }
    }
    public async void 重設密碼(string password){
        Firebase.Auth.FirebaseUser user = auth.CurrentUser;
        var usertask = user.UpdatePasswordAsync(password);
        await usertask;
    }
    public async Task<string> 重設EMAIL(string password)
    {
        try
        {
            Firebase.Auth.FirebaseUser user = auth.CurrentUser;
            var usertask = user.UpdateEmailAsync(password);
            await usertask;
            return "邮箱重设成功";
        }
        catch (Exception ex)
        {
            return "重设邮箱时出错：" + ex.Message;
        }
    }
    public void 登出(){
        auth.SignOut();
    }
    void AuthStateChanged(object sender, System.EventArgs eventArgs)
    {
        if (auth.CurrentUser != user)
        {
            user = auth.CurrentUser;
            if (user != null)
            {
                Debug.Log($"登入帳號 - {user.Email}");
            }
        }
    }
    void OnDestroy()
    {
        auth.StateChanged  -= AuthStateChanged;
    }
}