auth_logic.dart

class SessionManagement extends ChangeNotifier{
  FirebaseUser fUser;

  Future<FirebaseUser> currentUser()async{
    FirebaseUser user = await FirebaseAuth.instance.currentUser();
    if(user == null){
      print("No User");
    }else{
      print("Current User : "+user.uid);
      return user;
    }
    return null;
  }
  


  Future<bool> logout()async{
    try{
      await FirebaseAuth.instance.signOut();
      return true;
    }catch(e){
      return false;
    }
  }

}

class LoginLogic extends ChangeNotifier{
  bool loginButton = false;
  bool showPassword = false;
  bool isAuthenticating = false;

  void showPassFun(){
    showPassword = !showPassword;
    notifyListeners();
  }

  void loginButtonListener(String username, String password){
    if(username.length > 5 && password.length > 5){
      loginButton = true;
      notifyListeners();
    }else{
      loginButton = false;
      notifyListeners();
    }
  }


  void loginIn(BuildContext context ,String email, String pass)async{
    print("Username : "+email+"Password : "+pass);
    isAuthenticating = true;
    notifyListeners();
    try{
      FirebaseUser user = await FirebaseAuth.instance.signInWithEmailAndPassword(email: email, password: pass);
      print(user.uid);
      isAuthenticating = false;
      notifyListeners();
      Navigator.pushAndRemoveUntil(context, MaterialPageRoute(builder: (context)=>MultiProvider(
        providers: [
          ChangeNotifierProvider(builder: (_)=>SessionManagement(),)
        ],
        child: SpotifyHome(),
      )), (Route<dynamic> route)=>false);
    }catch(e){
      final ShowCustomAlertDialog showCustomAlertDialog = ShowCustomAlertDialog();
      print("Catch Error : "+e.message);
      showCustomAlertDialog.showCustomDialog(context, e.message);
      isAuthenticating = false;
      loginButton = false;
      notifyListeners();
    }
  }
}

class CreateUserAccount extends ChangeNotifier{

  final PageController pctrl = PageController(initialPage: 0);
  bool emailNextEnabled = false;
  bool passNextEnabled = false;
  bool nameNextEnabled = false;

  bool isCreatingAccount = false;

  bool showPassword = false;
  String name, email, password;

  void emailNextButtonListener(String text){
    if(text.length > 5){
      emailNextEnabled = true;
    }else{
      emailNextEnabled = false;
    }
    notifyListeners();
  }

  void passNextButtonListener(String text){
    if(text.length > 6){
      passNextEnabled = true;
    }else{
      passNextEnabled = false;
    }
    notifyListeners();
  }

  void nameNextButtonListener(String text){
    if(text.length > 6){
      nameNextEnabled = true;
    }else{
      nameNextEnabled = false;
    }
    notifyListeners();
  }

  void showPassFun(){
    showPassword = !showPassword;
    notifyListeners();
  }

  Future<bool> signUp(BuildContext context ,String name ,String email, String password)async{
    isCreatingAccount = true;
    notifyListeners();
    try{
      FirebaseUser user = await FirebaseAuth.instance.createUserWithEmailAndPassword(email: email, password: password);
      print("Signed up as : "+user.uid);
      isCreatingAccount = false;
      notifyListeners();
      Navigator.pushAndRemoveUntil(context, MaterialPageRoute(builder: (context)=>MultiProvider(
        providers: [
          ChangeNotifierProvider(builder: (_)=>SessionManagement(),)
        ],
        child: SpotifyHome(),
      )), (Route<dynamic> route)=>false);
      return true;
    }catch(e){
      final ShowCustomAlertDialog showCustomAlertDialog = ShowCustomAlertDialog();
      print(e.message);
      isCreatingAccount = false;
      notifyListeners();
      showCustomAlertDialog.showCustomDialog(context, e.message);
      return false;
    }

    
  }

}