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;
                double num;
                SQL_game_sys.SQL_使用者_查詢編號();
                if(SQL_Module.dr.Read()){num = double.Parse(SQL_Module.dr[0].ToString());}else{num =0;}
                num += 1;
                SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString() ,"遊客",num.ToString().PadLeft(9,'0'), password,"0","","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){
        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{
                    double num;SQL_game_sys.SQL_使用者_查詢編號();
                    if(SQL_Module.dr.Read()){num = double.Parse(SQL_Module.dr[0].ToString());}else{num =0;}
                    num += 1;
                    SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString(),"GOOGLE遊客",num.ToString().PadLeft(9,'0'));
                }
                return "0";
            }else {
                return "1-2.未知错误";
            }
        }catch (Exception ex){
            return "1-3." + ex.Message;
        }
    }*/
    public async Task<string> AppleSignIn(string appletoken,string row_nonce,string password){
        Firebase.Auth.Credential credential = Firebase.Auth.OAuthProvider.GetCredential("apple.com",appletoken,row_nonce);
        var applesignintask = auth.SignInWithCredentialAsync(credential);
        await applesignintask;
        if(applesignintask.IsCanceled){
            return "3-1.Cabceld";
        }else if(applesignintask.IsFaulted){
            return "3-2."+applesignintask.Exception.InnerException.Message;
        }else if(applesignintask.IsCompletedSuccessfully){
            string userID = applesignintask.Result.UserId;
            ulong creationDate = applesignintask.Result.Metadata.CreationTimestamp;
            string email = applesignintask.Result.Email;
            SQL_game_sys.SQL_使用者_查詢暱稱(userID);
            if(SQL_Module.dr.Read()){}else{
                Main.Global.使用者ID=password;
                double num;SQL_game_sys.SQL_使用者_查詢編號();
                if(SQL_Module.dr.Read()){num = double.Parse(SQL_Module.dr[0].ToString());}else{num =0;}
                num += 1;
                SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString(),"APPLE遊客",num.ToString().PadLeft(9,'0'), password,"1",email,"1");
            }
            return "0";
        }else{
            return "3-3.未知錯誤";
        }
    }
    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;
                double num;SQL_game_sys.SQL_使用者_查詢編號();
                if(SQL_Module.dr.Read()){num = double.Parse(SQL_Module.dr[0].ToString());}else{num =0;}
                num += 1;
                SQL_game_sys.SQL_使用者_新增(userID,creationDate.ToString() ,"匿名遊客",num.ToString().PadLeft(9,'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 void DeleteUserInfo(){
        Firebase.Auth.FirebaseUser user = auth.CurrentUser;
        user?.DeleteAsync().ContinueWith(task => {
            if (task.IsCanceled) {
                Debug.LogError("DeleteAsync was canceled.");
                return;
            }
            if (task.IsFaulted) {
                Debug.LogError("DeleteAsync encountered an error: " + task.Exception);
                return;
            }
            Debug.Log("User deleted successfully.");
        });
    }
    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;
    }
}