driver-app/lib/core/viewModels/authentication_view_model.dart

import 'package:driverapp/config/shared_pref_kay.dart';
import 'package:driverapp/core/model/authentication/authenticated_user.dart';
import 'package:driverapp/core/model/authentication/login_request.dart';
import 'package:driverapp/core/service/authentication_service.dart';
import 'package:driverapp/core/service/client/base_app_client.dart';
import 'package:flutter/cupertino.dart';

import '../../locator.dart';

enum APP_STATUS { LOADING, UNAUTHENTICATED, AUTHENTICATED }

class AuthenticationViewModel with ChangeNotifier {
  AuthenticationService _authenticationService =
      locator<AuthenticationService>();
  AuthenticatedUser user;
  bool isLogin = false;
  bool isLoading = false;
  bool isError = false;
  String error;

  AuthenticationViewModel() {
    getUser();
  }

  getUser() async {
    if (user == null) {
      isLoading = true;
      notifyListeners();
      var userProfile = await sharedPref.getObject(USER_PROFILE);
      if (userProfile != null) {
        user = AuthenticatedUser.fromJson(
            await sharedPref.getObject(USER_PROFILE));
        isLogin = true;
        isLoading = false;
        notifyListeners();
      } else {
        isLogin = false;
        isLoading = false;
        notifyListeners();
      }
    }
//    else
//      {
//        isLogin = true;
//        isLoading = false;
//        notifyListeners();
//      }
  }

  APP_STATUS get status {
    if (isLoading) {
      return APP_STATUS.LOADING;
    } else {
      if (isLogin) {
        return APP_STATUS.AUTHENTICATED;
      } else {
        return APP_STATUS.UNAUTHENTICATED;
      }
    }
  }

  login(LoginRequest loginRequest) async {
    isLoading = true;
    notifyListeners();
    await _authenticationService.login(loginRequest);
    if (_authenticationService.hasError) {
      error = _authenticationService.error;
      isLoading = false;
      isError = true;
      notifyListeners();
    } else {
      isLoading = false;
      isError = false;
      isLogin = true;
      await sharedPref.setObject(
          USER_PROFILE, _authenticationService.authenticatedUser);
      sharedPref.setString(TOKEN, _authenticationService.token);
      user = _authenticationService.authenticatedUser;
      notifyListeners();
    }
  }

  getOpt(int driverID) async {
    isLoading = true;
    notifyListeners();
    await _authenticationService.getOpt(driverID);
    if (_authenticationService.hasError) {
      error = _authenticationService.error;
      isLoading = false;
      isError = true;
      notifyListeners();
    } else {
      isLoading = false;
      isError = false;
      notifyListeners();
    }
  }

  changePassword(String password, String confirmPassword) async {
    isLoading = true;
    notifyListeners();
    await _authenticationService.changePassword(password, confirmPassword);
    if (_authenticationService.hasError) {
      error = _authenticationService.error;
      isLoading = false;
      isError = true;
      notifyListeners();
    } else {
      isLoading = false;
      isError = false;
      notifyListeners();
    }
  }

  checkActivationCode(int driverID) async {
    isLoading = true;
    notifyListeners();
    await _authenticationService.checkActivationCode(driverID);
    if (_authenticationService.hasError) {
      error = _authenticationService.error;
      isLoading = false;
      isError = true;
      notifyListeners();
    } else {
      isLoading = false;
      isError = false;
      notifyListeners();
    }
  }

  logout() async {
    isLoading = false;
    isError = false;
    isLogin = false;
    await sharedPref.clear();
    notifyListeners();
  }
}