Complete Initial Implementation

Author: Okanlawon Jamiu

lib/main.dart

@@ -1,8 +1,8 @@
-import 'package:books/src/core/constants/strings.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 
+import 'src/core/constants/strings.dart';
 import 'src/core/routes.dart';
 import 'src/core/theme.dart';
 import 'src/features/startup/views/startup_view.dart';

lib/src/core/constants/strings.dart

@@ -48,6 +48,7 @@ class AppStrings {
   static const changeEmail = 'Change Email';
   static const changePassword = 'Change Password';
   static const logout = 'Logout';
+  static const deleteAccount = 'Delete Account';
   static const updateEmail = 'Update Email Address';
   static const updatePassword = 'Update Password';
   static const oldPassword = 'Old Password';

lib/src/features/books/views/books_view.dart

@@ -1,13 +1,13 @@
-import 'package:books/src/core/constants/strings.dart';
-import 'package:books/src/core/routes.dart';
-import 'package:books/src/services/navigation_service.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 
 import '../../../core/constants/colors.dart';
 import '../../../core/constants/dimensions.dart';
+import '../../../core/constants/strings.dart';
+import '../../../core/routes.dart';
 import '../../../core/utilities/base_change_notifier.dart';
+import '../../../services/navigation_service.dart';
 import '../../../widgets/pill.dart';
 import '../../../widgets/responsive.dart';
 import '../../../widgets/spacing.dart';

lib/src/features/profile/notifiers/profile_notifier.dart

@@ -4,7 +4,9 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 import '../../../core/routes.dart';
 import '../../../core/utilities/base_change_notifier.dart';
 import '../../../repositories/authentication_repository.dart';
+import '../../../services/base/failure.dart';
 import '../../../services/navigation_service.dart';
+import '../../../services/snackbar_service.dart';
 
 class ProfileNotifier extends BaseChangeNotifier {
   ProfileNotifier(this._read);
@@ -21,6 +23,25 @@ class ProfileNotifier extends BaseChangeNotifier {
       (_) => false,
     );
   }
+
+  Future<void> deleteUser() async {
+    try {
+      setState(state: AppState.loading);
+
+      final message = await _read(authenticationRepository).deleteUser();
+
+      _read(navigationService).navigateOffAllNamed(
+        Routes.login,
+        (_) => false,
+      );
+
+      _read(snackbarService).showSuccessSnackBar(message);
+    } on Failure catch (f) {
+      _read(snackbarService).showErrorSnackBar(f.message);
+    } finally {
+      setState(state: AppState.idle);
+    }
+  }
 }
 
 final profileNotifierProvider = ChangeNotifierProvider.autoDispose(

lib/src/features/profile/views/profile_view.dart

@@ -94,17 +94,35 @@ class ProfileView extends ConsumerWidget {
                       ),
                     ),
                     const Spacing.largeHeight(),
-                    ElevatedButton(
-                      child: const Text(AppStrings.logout),
-                      style: ElevatedButton.styleFrom(
-                        primary: colorScheme.secondary,
-                        minimumSize: const Size(140, 40),
-                        shape: RoundedRectangleBorder(
-                          borderRadius: BorderRadius.circular(16),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        ElevatedButton(
+                          child: const Text(AppStrings.logout),
+                          style: ElevatedButton.styleFrom(
+                            primary: colorScheme.secondary,
+                            minimumSize: const Size(140, 40),
+                            shape: RoundedRectangleBorder(
+                              borderRadius: BorderRadius.circular(16),
+                            ),
+                          ),
+                          onPressed:
+                              context.read(profileNotifierProvider).logoutUser,
                         ),
-                      ),
-                      onPressed:
-                          context.read(profileNotifierProvider).logoutUser,
+                        const Spacing.mediumWidth(),
+                        ElevatedButton(
+                          child: const Text(AppStrings.deleteAccount),
+                          style: ElevatedButton.styleFrom(
+                            primary: colorScheme.secondary,
+                            minimumSize: const Size(140, 40),
+                            shape: RoundedRectangleBorder(
+                              borderRadius: BorderRadius.circular(16),
+                            ),
+                          ),
+                          onPressed:
+                              context.read(profileNotifierProvider).deleteUser,
+                        ),
+                      ],
                     ),
                   ],
                 ),

lib/src/repositories/authentication_repository.dart

@@ -1,3 +1,4 @@
+import 'package:cloud_functions/cloud_functions.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/foundation.dart';
 import 'package:google_sign_in/google_sign_in.dart';
@@ -9,10 +10,12 @@ import '../services/base/failure.dart';
 class AuthenticationRepository {
   AuthenticationRepository({
     required this.firebaseAuth,
+    required this.firebaseFunctions,
     required this.googleSignIn,
   });
 
   final FirebaseAuth firebaseAuth;
+  final FirebaseFunctions firebaseFunctions;
   final GoogleSignIn googleSignIn;
 
   User? get currentUser => firebaseAuth.currentUser;
@@ -25,6 +28,9 @@ class AuthenticationRepository {
         password: params.password,
       );
 
+      // I'm not creating a new user on firestore and using this instead
+      // because all I have to store is full name and the firebase auth user
+      // object is faster to access
       _userCredential.user!.updateDisplayName(params.fullName);
 
       await _userCredential.user!.sendEmailVerification();
@@ -129,6 +135,23 @@ class AuthenticationRepository {
     }
   }
 
+  Future<String> deleteUser() async {
+    try {
+      final HttpsCallable callable = firebaseFunctions.httpsCallable(
+        'deleteUserAccount',
+        options: HttpsCallableOptions(timeout: const Duration(seconds: 10)),
+      );
+
+      final result = await callable();
+
+      logout();
+
+      return result.data;
+    } on FirebaseFunctionsException catch (ex) {
+      throw Failure(ex.message ?? 'Something went wrong!');
+    }
+  }
+
   Future<void> logout() async {
     if (!kIsWeb) {
       await googleSignIn.signOut();
@@ -140,6 +163,7 @@ class AuthenticationRepository {
 final authenticationRepository = Provider(
   (ref) => AuthenticationRepository(
     firebaseAuth: FirebaseAuth.instance,
+    firebaseFunctions: FirebaseFunctions.instance,
     googleSignIn: GoogleSignIn(),
   ),
 );

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -6,12 +6,14 @@ import FlutterMacOS
 import Foundation
 
 import cloud_firestore
+import cloud_functions
 import firebase_auth
 import firebase_core
 import path_provider_macos
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FLTFirebaseFirestorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseFirestorePlugin"))
+  FLTFirebaseFunctionsPlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseFunctionsPlugin"))
   FLTFirebaseAuthPlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseAuthPlugin"))
   FLTFirebaseCorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseCorePlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))

pubspec.lock

@@ -85,6 +85,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.4.3"
+  cloud_functions:
+    dependency: "direct main"
+    description:
+      name: cloud_functions
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.4"
+  cloud_functions_platform_interface:
+    dependency: transitive
+    description:
+      name: cloud_functions_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.11"
+  cloud_functions_web:
+    dependency: transitive
+    description:
+      name: cloud_functions_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.13"
   collection:
     dependency: transitive
     description:

pubspec.yaml

@@ -20,6 +20,7 @@ dependencies:
   firebase_core: ^1.7.0
   firebase_auth: ^3.1.3
   cloud_firestore: ^2.5.3
+  cloud_functions: ^3.0.4
   google_sign_in: ^5.1.1
 
 dev_dependencies: