syncrow-app/lib/features/auth/bloc/auth_cubit.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';

import 'package:syncrow_app/features/auth/model/login_with_email_model.dart';
import 'package:syncrow_app/features/auth/model/token.dart';
import 'package:syncrow_app/features/auth/model/user_model.dart';
import 'package:syncrow_app/navigation/navigation_service.dart';
import 'package:syncrow_app/navigation/routing_constants.dart';
import 'package:syncrow_app/services/api/authentication_api.dart';
import 'package:syncrow_app/services/api/network_exception.dart';

part 'auth_state.dart';

class AuthCubit extends Cubit<AuthState> {
  AuthCubit() : super(AuthInitial()) {
    getTokenAndValidate();
  }

  static AuthCubit get(context) => BlocProvider.of(context);

  TextEditingController emailController = TextEditingController();
  TextEditingController passwordController = TextEditingController();
  bool isPasswordVisible = false;

  static GlobalKey<FormState> formKey = GlobalKey<FormState>();

  void changePasswordVisibility() {
    isPasswordVisible = !isPasswordVisible;
    emit(AuthPasswordVisibilityChanged());
  }

  bool agreeToTerms = false;

  void changeAgreeToTerms() {
    agreeToTerms = !agreeToTerms;
    emit(AuthAgreeToTermsChanged());
  }

  static UserModel? user;

  static Token token = Token.emptyConstructor();

  login() async {
    emit(AuthLoginLoading());
    try {
      token = await AuthenticationAPI.loginWithEmail(
        model: LoginWithEmailModel(
          email: emailController.text.toLowerCase(),
          password: passwordController.text,
        ),
      );

      if (token.accessTokenIsNotEmpty) {
        FlutterSecureStorage storage = const FlutterSecureStorage();
        await storage.write(
            key: Token.loginAccessTokenKey, value: token.accessToken);
        const FlutterSecureStorage().write(
            key: UserModel.userUuidKey,
            value: Token.decodeToken(token.accessToken)['uuid'].toString());
        user = UserModel.fromToken(token);
        emailController.clear();
        passwordController.clear();
        emit(AuthLoginSuccess());
      } else {
        emit(AuthLoginError(message: 'Something went wrong'));
      }
    } on ServerFailure catch (failure) {
      emit(AuthError(message: failure.errMessage));
    }
  }

  logout() async {
    emit(AuthLogoutLoading());
    try {
      FlutterSecureStorage storage = const FlutterSecureStorage();
      await storage.delete(key: Token.loginAccessTokenKey);
      NavigationService.navigatorKey.currentState!
          .popAndPushNamed(Routes.authLogin);
      emit(AuthLogoutSuccess());
    } on ServerFailure catch (failure) {
      emit(AuthError(message: failure.errMessage));
    }
  }

  getTokenAndValidate() async {
    emit(AuthTokenLoading());
    final value =
        await const FlutterSecureStorage().read(key: Token.loginAccessTokenKey);

    if (value == null) {
      emit(AuthTokenError(message: "Token not found"));
      return;
    }

    final tokenData = Token.decodeToken(value);

    if (tokenData.containsKey('exp')) {
      final exp = tokenData['exp'] ?? 0;
      final currentTime = DateTime.now().millisecondsSinceEpoch ~/ 1000;

      if (currentTime < exp) {
        emit(AuthTokenSuccess());
      } else {
        emit(AuthTokenError(message: "Token expired"));
      }
    } else {
      emit(AuthTokenError(message: "Something went wrong"));
    }
  }

  static void logUserOut() async {
    user = null;
    token = Token.emptyConstructor();
    FlutterSecureStorage storage = const FlutterSecureStorage();
    await storage.delete(key: Token.loginAccessTokenKey);
  }
}