first cummit

Author: ankitpsamrat

android/app/build.gradle

@@ -22,6 +22,7 @@ if (flutterVersionName == null) {
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'com.google.gms.google-services'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
@@ -47,8 +48,8 @@ android {
         applicationId "com.example.login_page"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
-        minSdkVersion flutter.minSdkVersion
-        targetSdkVersion flutter.targetSdkVersion
+        minSdkVersion 21
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
@@ -68,4 +69,6 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation platform('com.google.firebase:firebase-bom:30.1.0')
+    implementation 'com.google.firebase:firebase-analytics'
 }

android/app/google-services.json

@@ -0,0 +1,39 @@
+{
+  "project_info": {
+    "project_number": "67146073120",
+    "project_id": "emailpasswordauth-38ee5",
+    "storage_bucket": "emailpasswordauth-38ee5.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:67146073120:android:f8af0d0f76b94112f5e845",
+        "android_client_info": {
+          "package_name": "com.example.login_page"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "67146073120-lakptfhc11lpvigs3n7ncq67n48mm186.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyBYABrgm-B98rEGi8g2xL5MjKkQxN6aCGg"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "67146073120-lakptfhc11lpvigs3n7ncq67n48mm186.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

android/build.gradle

@@ -7,6 +7,7 @@ buildscript {
 
     dependencies {
         classpath 'com.android.tools.build:gradle:7.1.2'
+        classpath 'com.google.gms:google-services:4.3.10'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

lib/main.dart

@@ -1,7 +1,10 @@
+import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/material.dart';
 import 'package:login_page/screens/login_screen.dart';
 
-void main() {
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  await Firebase.initializeApp();
   runApp(const MyApp());
 }
 

lib/screens/login_screen.dart

@@ -1,3 +1,4 @@
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
 import 'package:login_page/screens/home_screen.dart';
 import 'package:login_page/screens/registration_screen.dart';
@@ -15,6 +16,8 @@ class _LoginScreenState extends State<LoginScreen> {
   final TextEditingController emailController = new TextEditingController();
   final TextEditingController passwordController = new TextEditingController();
 
+  final _auth = FirebaseAuth.instance;
+
   @override
   Widget build(BuildContext context) {
     // emailfield
@@ -23,6 +26,15 @@ class _LoginScreenState extends State<LoginScreen> {
       autofocus: false,
       controller: emailController,
       keyboardType: TextInputType.emailAddress,
+      validator: (value) {
+        if (value!.isEmpty) {
+          return ('Please enter your email');
+        }
+        if (!RegExp("^[a-zA-Z0-9+_.-]+@[a-zA-Z0-9.-]+.[a-z]").hasMatch(value)) {
+          return ('Please enter a valid email');
+        }
+        return null;
+      },
       onSaved: (value) {
         emailController.text = value!;
       },
@@ -44,6 +56,16 @@ class _LoginScreenState extends State<LoginScreen> {
     final passwordField = TextFormField(
       autofocus: false,
       controller: passwordController,
+      validator: (value) {
+        RegExp regex = new RegExp(r'^.{6,}$');
+        if (value!.isEmpty) {
+          return ("Password is required for login");
+        }
+        if (!regex.hasMatch(value)) {
+          return ("Enter Valid Password(Min. 6 Character)");
+        }
+        return null;
+      },
       onSaved: (value) {
         passwordController.text = value!;
       },
@@ -70,12 +92,7 @@ class _LoginScreenState extends State<LoginScreen> {
         padding: EdgeInsets.fromLTRB(20, 15, 20, 15),
         minWidth: MediaQuery.of(context).size.width,
         onPressed: () {
-          Navigator.pushReplacement(
-            context,
-            MaterialPageRoute(
-              builder: (context) => HomeScreen(),
-            ),
-          );
+          signIn(emailController.text, passwordController.text);
         },
         child: Text(
           'Login',
@@ -161,3 +178,5 @@ class _LoginScreenState extends State<LoginScreen> {
     );
   }
 }
+
+  // login function

pubspec.lock

@@ -36,6 +36,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  cloud_firestore:
+    dependency: "direct main"
+    description:
+      name: cloud_firestore
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.17"
+  cloud_firestore_platform_interface:
+    dependency: transitive
+    description:
+      name: cloud_firestore_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.5.7"
+  cloud_firestore_web:
+    dependency: transitive
+    description:
+      name: cloud_firestore_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.6.16"
   collection:
     dependency: transitive
     description:
@@ -57,6 +78,48 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  firebase_auth:
+    dependency: "direct main"
+    description:
+      name: firebase_auth
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.3.19"
+  firebase_auth_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_auth_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.2.7"
+  firebase_auth_web:
+    dependency: transitive
+    description:
+      name: firebase_auth_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.3.16"
+  firebase_core:
+    dependency: "direct main"
+    description:
+      name: firebase_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.17.1"
+  firebase_core_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_core_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.4.0"
+  firebase_core_web:
+    dependency: transitive
+    description:
+      name: firebase_core_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.4"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -74,6 +137,39 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  fluttertoast:
+    dependency: "direct main"
+    description:
+      name: fluttertoast
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.0.9"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.1"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.0"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.4"
   lints:
     dependency: transitive
     description:
@@ -109,6 +205,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.1"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -156,6 +259,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.9"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
   vector_math:
     dependency: transitive
     description:
@@ -165,3 +275,4 @@ packages:
     version: "2.1.2"
 sdks:
   dart: ">=2.17.1 <3.0.0"
+  flutter: ">=1.12.13+hotfix.5"

pubspec.yaml

@@ -27,28 +27,21 @@ environment:
 # the latest version available on pub.dev. To see which dependencies have newer
 # versions available, run `flutter pub outdated`.
 dependencies:
+  cloud_firestore: ^3.1.17
+  cupertino_icons: ^1.0.2
+  firebase_auth: ^3.3.19
+  firebase_core: ^1.17.1
   flutter:
     sdk: flutter
-
-
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^1.0.2
+  fluttertoast: ^8.0.9
 
 dev_dependencies:
+  flutter_lints: ^2.0.0
   flutter_test:
     sdk: flutter
 
-  # The "flutter_lints" package below contains a set of recommended lints to
-  # encourage good coding practices. The lint set provided by the package is
-  # activated in the `analysis_options.yaml` file located at the root of your
-  # package. See that file for information about deactivating specific lint
-  # rules and activating additional ones.
-  flutter_lints: ^2.0.0
-
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
-
 # The following section is specific to Flutter packages.
 flutter:
 
@@ -61,13 +54,10 @@ flutter:
   assets:
     - assets/images/
   #   - images/a_dot_ham.jpeg
-
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware
-
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages
-
   # To add custom fonts to your application, add a fonts section here,
   # in this "flutter" section. Each entry in this list should have a
   # "family" key with the font family name, and a "fonts" key with a