Added login page

lib/firebase_options.dart

@@ -0,0 +1,60 @@
+// File generated by FlutterFire CLI.
+// ignore_for_file: lines_longer_than_80_chars
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+/// Default [FirebaseOptions] for use with your Firebase apps.
+///
+/// Example:
+/// ```dart
+/// import 'firebase_options.dart';
+/// // ...
+/// await Firebase.initializeApp(
+///   options: DefaultFirebaseOptions.currentPlatform,
+/// );
+/// ```
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      throw UnsupportedError(
+        'DefaultFirebaseOptions have not been configured for web - '
+        'you can reconfigure this by running the FlutterFire CLI again.',
+      );
+    }
+    // ignore: missing_enum_constant_in_switch
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for macos - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+    }
+
+    throw UnsupportedError(
+      'DefaultFirebaseOptions are not supported for this platform.',
+    );
+  }
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: 'AIzaSyAmUEAR1SB7bf29XoGNpOExo_GWoNl68J8',
+    appId: '1:903921644523:android:8b1be795cfa3b71a079fae',
+    messagingSenderId: '903921644523',
+    projectId: 'leg-barkr',
+    storageBucket: 'leg-barkr.appspot.com',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: 'AIzaSyA6haaqDGLGt5gYLc_z1r0P-jWl0bF3Xlc',
+    appId: '1:903921644523:ios:9294b2d611ff71fc079fae',
+    messagingSenderId: '903921644523',
+    projectId: 'leg-barkr',
+    storageBucket: 'leg-barkr.appspot.com',
+    iosClientId: '903921644523-cq15mvp7kj64spro7ugkh781kvp4bm42.apps.googleusercontent.com',
+    iosBundleId: 'com.legbarkr.app',
+  );
+}

lib/home.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:leg_barkr_app/view/auth/register_form.dart';
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:leg_barkr_app/view/metrics/metrics_page.dart';
 import 'package:leg_barkr_app/view/steps/steps_page.dart';
 import 'package:leg_barkr_app/view/map_page.dart';
@@ -16,6 +16,16 @@ class _HomeScreenState extends State<HomeScreen> {
   int _page = 0;
   PageController _pageController = PageController();
 
+  _HomeScreenState(){
+    FirebaseAuth.instance
+        .authStateChanges()
+        .listen((User? user) {
+            if (user == null) {
+              Navigator.pushNamed(context, "/login");
+            }
+    });
+  }
+
   void onBottomBarPressed(int page) {
     setState(() {
       _page = page;
@@ -30,8 +40,7 @@ class _HomeScreenState extends State<HomeScreen> {
       body: PageView(
         controller: _pageController,
         children: const <Widget>[
-          RegisterForm(),   // Purely for testing purposes.
-          //MetricsPage(),
+          MetricsPage(),
           StepsPage(),
           MapPage(),
           SettingsPage()

lib/main.dart

@@ -1,10 +1,18 @@
+import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/material.dart';
 import 'package:leg_barkr_app/home.dart';
 import 'package:flutter/services.dart';
+import 'package:leg_barkr_app/view/auth/login_form.dart';
+import 'package:leg_barkr_app/view/auth/register_form.dart';
+import 'firebase_options.dart';
 
-void main() {
+void main() async {
   SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(statusBarColor: Colors.black12));
-  runApp(const Main());
+  WidgetsFlutterBinding.ensureInitialized();
+  await Firebase.initializeApp(
+    options: DefaultFirebaseOptions.currentPlatform,
+  );
+  runApp(Main());
 }
 
 class Main extends StatelessWidget {
@@ -14,7 +22,13 @@ class Main extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
         theme: ThemeData.light(),
-        home: HomeScreen()
+        //home: HomeScreen(),
+        initialRoute: '/',
+        routes: {
+          '/': (context) => const HomeScreen(),
+          '/login': (context) => const LoginForm(),
+          '/register': (context) => const RegisterForm()
+        }
     );
   }
 }

lib/view/auth/login_form.dart

@@ -0,0 +1,150 @@
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:flutter/material.dart';
+
+
+class LoginForm extends StatefulWidget {
+  const LoginForm({Key? key}) : super(key: key);
+
+  @override
+  _LoginFormState createState() => _LoginFormState();
+}
+
+class _LoginFormState extends State<LoginForm> {
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+  late String _email, _password;
+  bool _loggingIn = false;
+
+  void attemptLogin(){
+    final form = _formKey.currentState;
+    if (form!.validate()) {
+      form.save();
+      setState(() { _loggingIn = true; });
+      loginUser();
+    } else {
+      setState(() { _loggingIn = false; });
+    }
+  }
+
+  Future<void> loginUser() async {
+    try {
+      await FirebaseAuth.instance.signInWithEmailAndPassword(email: _email, password: _password);
+      Navigator.pushNamed(context, "/");
+    } on FirebaseAuthException catch (e) {
+      if (e.code == 'user-not-found') {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Invalid email")));
+        setState(() { _loggingIn = false; });
+      } else if (e.code == 'wrong-password') {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Incorrect password")));
+        setState(() { _loggingIn = false; });
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final TextFormField emailInput = TextFormField(
+      autofocus: false,
+      cursorColor: Colors.green,
+      decoration: const InputDecoration(
+        border: OutlineInputBorder(),
+        focusedBorder: OutlineInputBorder(
+            borderSide: BorderSide(
+                color: Colors.green,
+                width: 2
+            )
+        ),
+        hintText: 'Email',
+        //labelStyle: TextStyle(color: Colors.green),
+      ),
+      validator: (value) => value!.isEmpty ? "Please enter email" : null,
+      onSaved: (value) => _email = value!,
+    );
+
+    final TextFormField passwordInput = TextFormField(
+      autofocus: false,
+      obscureText: true,
+      cursorColor: Colors.green,
+      decoration: const InputDecoration(
+        border: OutlineInputBorder(),
+        focusedBorder: OutlineInputBorder(
+            borderSide: BorderSide(
+                color: Colors.green,
+                width: 2
+            )
+        ),
+        hintText: 'Password',
+        //labelStyle: TextStyle(color: Colors.green),
+      ),
+      validator: (value) => value!.isEmpty ? "Please enter password" : null,
+      onSaved: (value) => _password = value!,
+    );
+    
+    final Container loading = Container(
+      alignment: Alignment.center,
+      child: CircularProgressIndicator(
+        backgroundColor: Colors.green,
+        color: Colors.green,
+      ),
+    );
+
+    final Container loginBtn = Container(
+        width: double.infinity,
+        height: 50,
+        child: ElevatedButton(
+            onPressed: attemptLogin,
+            child: Text('Sign In'),
+            style: ElevatedButton.styleFrom(
+              alignment: Alignment.center,
+              primary: Colors.green,
+            )
+        )
+    );
+
+    final Container registerBtn = Container(
+        width: double.infinity,
+        height: 50,
+        child: ElevatedButton(
+            onPressed: (){ Navigator.pushNamed(context, '/register'); },
+            child: Text('No account? Register now!',
+                style: TextStyle(
+                    color: Colors.black,
+                    fontSize: 15
+                )
+            ),
+            style: ElevatedButton.styleFrom(
+              alignment: Alignment.center,
+              primary: Colors.white,
+              side: BorderSide(
+                color: Colors.green,
+                width: 2
+              )
+            )
+        )
+    );
+
+    return Scaffold(
+        appBar: null,
+        body: Center(
+          child: SingleChildScrollView(
+            child: Form(
+                key: _formKey,
+                child:Container(
+                    padding: EdgeInsets.all(10),
+                    child: Column(
+                        children: [
+                          emailInput,
+                          SizedBox(height: 20),
+                          passwordInput,
+                          SizedBox(height: 20),
+                          _loggingIn ? loading : loginBtn,
+                          SizedBox(height: 20),
+                          _loggingIn ? Text("") : registerBtn
+                        ]
+                    )
+                )
+            ),
+          )
+      )
+    );
+  }
+}

lib/view/auth/register_form.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
 import 'package:leg_barkr_app/home.dart';
 import 'package:leg_barkr_app/utils/endpoints.dart' as Endpoints;
+import 'package:leg_barkr_app/view/auth/login_form.dart';
 
 class RegisterForm extends StatefulWidget {
   const RegisterForm({Key? key}) : super(key: key);
@@ -47,7 +48,7 @@ class _RegisterFormState extends State<RegisterForm> {
       }),
     );
     if (response.statusCode == 201){
-      Navigator.push(context, MaterialPageRoute(builder: (context) => HomeScreen()));
+      Navigator.push(context, MaterialPageRoute(builder: (context) => LoginForm()));
     } else if (response.statusCode == 400){
       ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Fields missing!")));
     } else if (response.statusCode == 409){
@@ -204,8 +205,9 @@ class _RegisterFormState extends State<RegisterForm> {
 
     );
 
-    return SafeArea(
-        child: SingleChildScrollView(
+    return Scaffold(
+      appBar: null,
+      body: SingleChildScrollView(
           child: Form(
             key: _formKey,
             child:Container(

pubspec.lock

@@ -78,6 +78,48 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
+  firebase_auth:
+    dependency: "direct main"
+    description:
+      name: firebase_auth
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.3.7"
+  firebase_auth_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_auth_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.11"
+  firebase_auth_web:
+    dependency: transitive
+    description:
+      name: firebase_auth_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.3.7"
+  firebase_core:
+    dependency: "direct main"
+    description:
+      name: firebase_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.12.0"
+  firebase_core_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_core_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.2.4"
+  firebase_core_web:
+    dependency: transitive
+    description:
+      name: firebase_core_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.4"
   flutter:
     dependency: "direct main"
     description: flutter

pubspec.yaml

@@ -39,6 +39,8 @@ dependencies:
   charts_flutter: ^0.12.0
   syncfusion_flutter_gauges: ^19.4.50
   http: ^0.13.4
+  firebase_core: ^1.12.0
+  firebase_auth: ^3.3.7
 
 
 dev_dependencies: