feat: Add authentication

Author: gausoft

.metadata

@@ -15,7 +15,7 @@ migration:
     - platform: root
       create_revision: 85684f9300908116a78138ea4c6036c35c9a1236
       base_revision: 85684f9300908116a78138ea4c6036c35c9a1236
-    - platform: android
+    - platform: linux
       create_revision: 85684f9300908116a78138ea4c6036c35c9a1236
       base_revision: 85684f9300908116a78138ea4c6036c35c9a1236
 

lib/common/form_validator.dart

@@ -24,4 +24,36 @@ class FormValidator {
   static String? validateProductQuantity(String? value) {
     return value!.isEmpty ? 'Please enter product quantity' : null;
   }
+
+  //Authentication
+  static String? validateEmail(String? value) {
+    String emailPattern =
+        r'^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$';
+    RegExp regExp = RegExp(emailPattern);
+
+    if (value!.isEmpty) {
+      return 'Please enter your email address';
+    } else if (!regExp.hasMatch(value)) {
+      return 'Please enter a valid email';
+    }
+    return null;
+  }
+
+  static String? validatePassword(String? value) {
+    return value!.isEmpty ? 'Please enter your password' : null;
+  }
+
+  static String? validateFullName(String? value) {
+    return value!.isEmpty ? 'Please enter your fullname' : null;
+  }
+
+  //validatePasswordConfirmation
+  static String? validatePasswordConfirmation(String? value, String password) {
+    if (value!.isEmpty) {
+      return 'Please enter your password confirmation';
+    } else if (value != password) {
+      return 'Password confirmation does not match';
+    }
+    return null;
+  }
 }

lib/common/providers.dart

@@ -1,10 +1,13 @@
 import 'package:dio/dio.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
+import '../providers/auth/auth_notifier.dart';
+import '../providers/auth/auth_state.dart';
 import '../providers/quotes_list_notifier.dart';
 import '../providers/quotes_list_state.dart';
 import '../providers/submit_quote_notifier.dart';
 import '../providers/submit_quote_state.dart';
+import '../repositories/auth_repository.dart';
 import '../repositories/quote_repository.dart';
 import 'constants.dart';
 
@@ -20,10 +23,16 @@ final dioProvider = Provider<Dio>(
   ),
 );
 
+//Repositories
 final repositoryProvider = Provider<QuoteRepository>(
   (ref) => QuoteRepositoryImpl(ref.read(dioProvider)),
 );
 
+final authRepositoryProvider = Provider<AuthRepository>(
+  (ref) => AuthRepositoryImpl(ref.read(dioProvider)),
+);
+
+//Notifiers
 final quotesListNotifier =
     StateNotifierProvider<QuotesListNotifier, QuotesListState>(
   (ref) => QuotesListNotifier(ref.read(repositoryProvider)),
@@ -36,3 +45,7 @@ final submitQuoteNotifier =
     return SubmitQuoteNotifier(ref.read(repositoryProvider), notifier);
   },
 );
+
+final authNotifier = StateNotifierProvider<AuthNotifier, AuthState>(
+  (ref) => AuthNotifier(ref.read(authRepositoryProvider)),
+);

lib/common/routes.dart

@@ -1,24 +1,38 @@
 import 'package:flutter/cupertino.dart';
 
-import '../screens/home_screen.dart';
-import '../screens/submit_request_screen.dart';
+import '../screens/auth/login_screen.dart';
+import '../screens/auth/register_screen.dart';
+import '../screens/home/request_list_screen.dart';
+import '../screens/home/submit_request_screen.dart';
 
 Route<dynamic> onGenerate(RouteSettings settings) {
   switch (settings.name) {
-    case '/':
+    case '/request-list':
       return CupertinoPageRoute(
+        builder: (_) => const RequestListScreen(),
         settings: settings,
-        builder: (_) => const HomeScreen(),
       );
     case '/request-quote':
       return CupertinoPageRoute(
         settings: settings,
         builder: (BuildContext context) => const RequestQuoteScreen(),
       );
+    case '/login':
+      return CupertinoPageRoute(
+        settings: settings,
+        builder: (BuildContext context) => const LoginScreen(),
+      );
+    case '/register':
+      return CupertinoPageRoute(
+        settings: settings,
+        builder: (BuildContext context) => const RegisterScreen(),
+      );
     default:
       return CupertinoPageRoute(
         settings: settings,
-        builder: (_) => const CupertinoPageScaffold(child: SizedBox()),
+        builder: (_) => const CupertinoPageScaffold(
+          child: Center(child: Text('Not Found')),
+        ),
       );
   }
 }

lib/main.dart

@@ -1,11 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:google_fonts/google_fonts.dart';
+import 'package:quote_request_app/screens/auth/login_screen.dart';
 
 import 'common/routes.dart' as routes;
 
-import 'screens/home_screen.dart';
-
 void main() {
   runApp(const QuoteRequestApp());
 }
@@ -24,7 +23,7 @@ class QuoteRequestApp extends StatelessWidget {
           textTheme: GoogleFonts.dosisTextTheme(),
         ),
         onGenerateRoute: routes.onGenerate,
-        home: const HomeScreen(),
+        home: const LoginScreen(),
       ),
     );
   }

lib/models/user_model.dart

@@ -0,0 +1,26 @@
+import 'package:flutter/foundation.dart';
+
+class UserModel {
+  final String? uuid;
+  final String email;
+  final String? password;
+  final String fullname;
+  final String? address;
+
+  UserModel({
+    this.uuid,
+    this.password,
+    this.address,
+    required this.email,
+    required this.fullname,
+  });
+
+  factory UserModel.fromJson(Map<String, dynamic> json) {
+    return UserModel(
+      uuid: json['id'],
+      email: json['email'],
+      fullname: json['user_metadata']['fullname'],
+      address: json['user_metadata']['address'],
+    );
+  }
+}

lib/providers/auth/auth_notifier.dart

@@ -0,0 +1,32 @@
+import 'package:quote_request_app/providers/auth/auth_state.dart';
+import 'package:quote_request_app/repositories/auth_repository.dart';
+import 'package:riverpod/riverpod.dart';
+
+class AuthNotifier extends StateNotifier<AuthState> {
+  AuthNotifier(this._authRepository) : super(AuthInitial());
+
+  final AuthRepository _authRepository;
+
+  Future<void> login(Map<String, dynamic> credentials) async {
+    state = AuthLoading();
+    try {
+      final user = await _authRepository.login(
+        credentials['email'],
+        credentials['password'],
+      );
+      state = AuthSuccess(user);
+    } catch (e) {
+      state = AuthError(e.toString());
+    }
+  }
+
+  Future<void> register(Map<String, dynamic> userData) async {
+    state = AuthLoading();
+    try {
+      final user = await _authRepository.register(userData);
+      state = AuthSuccess(user);
+    } catch (e) {
+      state = AuthError(e.toString());
+    }
+  }
+}

lib/providers/auth/auth_state.dart

@@ -0,0 +1,35 @@
+import 'package:equatable/equatable.dart';
+
+import '../../models/user_model.dart';
+
+abstract class AuthState extends Equatable {
+  const AuthState();
+}
+
+class AuthInitial extends AuthState {
+  @override
+  List<Object> get props => [];
+}
+
+class AuthLoading extends AuthState {
+  @override
+  List<Object> get props => [];
+}
+
+class AuthSuccess extends AuthState {
+  const AuthSuccess(this.user);
+
+  final UserModel user;
+
+  @override
+  List<Object> get props => [user];
+}
+
+class AuthError extends AuthState {
+  final String message;
+
+  const AuthError(this.message);
+
+  @override
+  List<Object> get props => [message];
+}

lib/repositories/auth_repository.dart

@@ -0,0 +1,54 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+
+import '../models/user_model.dart';
+
+abstract class AuthRepository {
+  Future<UserModel> login(String email, String password);
+  Future<UserModel> register(Map<String, dynamic> userData);
+}
+
+class AuthRepositoryImpl implements AuthRepository {
+  final Dio _dio;
+
+  AuthRepositoryImpl(this._dio);
+
+  @override
+  Future<UserModel> login(String email, String password) async {
+    try {
+      final response = await _dio.post(
+        '/auth/v1/token',
+        queryParameters: {'grant_type': 'password'},
+        data: {'email': email, 'password': password},
+      );
+
+      if (response.statusCode == 200) {
+        return UserModel.fromJson(response.data['user']);
+      } else {
+        throw Exception('An error occurred');
+      }
+    } on DioError catch (e) {
+      throw await Future.error(e.response!.data['error_description']);
+    } catch (e) {
+      debugPrint('AuthRepositoryImpl.login: $e');
+      throw await Future.error("Couldn't login. Is the device online?");
+    }
+  }
+
+  @override
+  Future<UserModel> register(Map<String, dynamic> userData) async {
+    try {
+      final response = await _dio.post('/auth/v1/signup', data: userData);
+      return UserModel.fromJson(response.data);
+    } on DioError catch (e) {
+      if (e.response!.statusCode == 400) {
+        throw await Future.error(e.response!.data['error_description']);
+      } else {
+        throw await Future.error(e.message);
+      }
+    } catch (e, stack) {
+      debugPrint('Error: $e\nStack : $stack');
+      throw await Future.error("Couldn't register. Is the device online?");
+    }
+  }
+}

lib/repositories/quote_repository.dart

@@ -13,22 +13,10 @@ class QuoteRepositoryImpl implements QuoteRepository {
 
   QuoteRepositoryImpl(this._dio);
 
-  @override
-  Future<void> deleteRequestedQuote(int requestedQuoteId) async {
-    try {
-      await _dio.delete(
-        '/requests',
-        queryParameters: {'id': 'eq.$requestedQuoteId'}, //check PostgREST docs
-      );
-    } catch (_) {
-      throw Future.error("Couldn't delete quote. Is the device online?");
-    }
-  }
-
   @override
   Future<List<Quote>> getQuotes() async {
     try {
-      final response = await _dio.get('/requests', queryParameters: {
+      final response = await _dio.get('/rest/v1/requests', queryParameters: {
         'order': 'created_at.desc',
       });
 
@@ -43,15 +31,27 @@ class QuoteRepositoryImpl implements QuoteRepository {
   @override
   Future<Quote> submitQuote(Map<String, dynamic> quote) async {
     try {
-      final response = await _dio.post('/requests', data: quote);
+      final response = await _dio.post('/rest/v1/requests', data: quote);
 
       if (response.statusCode == 201) {
-        return Quote.fromMap(response.data[0]);
+        return Quote.fromMap(response.data.first);
       } else {
         throw Exception('Error submitting request quote');
       }
     } catch (_) {
       throw Future.error("Couldn't submit quote. Is the device online?");
     }
   }
+
+  @override
+  Future<void> deleteRequestedQuote(int requestedQuoteId) async {
+    try {
+      await _dio.delete(
+        '/rest/v1/requests',
+        queryParameters: {'id': 'eq.$requestedQuoteId'}, //check PostgREST docs
+      );
+    } catch (_) {
+      throw Future.error("Couldn't delete quote. Is the device online?");
+    }
+  }
 }