3 files changed, 174 insertions, 0 deletions
diff --git a/lib/screens/home/home_screen.dart b/lib/screens/home/home_screen.dart
new file mode 100644
index 0000000..46acd22
--- /dev/null
+++ b/lib/screens/home/home_screen.dart
@@ -0,0 +1,14 @@
+import 'package:flutter/material.dart';
+
+class HomeScreen extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      appBar: new AppBar(title: new Text("Home"),),
+      body: new Center(
+        child: new Text("Welcome home!"),
+      ),
+    );
+  }
+
+}
+\ No newline at end of file
diff --git a/lib/screens/login/login_screen.dart b/lib/screens/login/login_screen.dart
new file mode 100644
index 0000000..7c8845e
--- /dev/null
+++ b/lib/screens/login/login_screen.dart
@@ -0,0 +1,141 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:beam_messenger/auth.dart';
+import 'package:beam_messenger/data/database_helper.dart';
+import 'package:beam_messenger/models/user.dart';
+import 'package:beam_messenger/screens/login/login_screen_presenter.dart';
+
+class LoginScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() {
+    return new LoginScreenState();
+  }
+}
+
+class LoginScreenState extends State<LoginScreen>
+    implements LoginScreenContract, AuthStateListener {
+  BuildContext _ctx;
+
+  bool _isLoading = false;
+  final formKey = new GlobalKey<FormState>();
+  final scaffoldKey = new GlobalKey<ScaffoldState>();
+  String _password, _email;
+
+  LoginScreenPresenter _presenter;
+
+  LoginScreenState() {
+    _presenter = new LoginScreenPresenter(this);
+    var authStateProvider = new AuthStateProvider();
+    authStateProvider.subscribe(this);
+  }
+
+  void _submit() {
+    final form = formKey.currentState;
+
+    if (form.validate()) {
+      setState(() => _isLoading = true);
+      form.save();
+      _presenter.doLogin(_email, _password);
+    }
+  }
+
+  void _showSnackBar(String text) {
+    scaffoldKey.currentState
+        .showSnackBar(new SnackBar(content: new Text(text)));
+  }
+
+  @override
+  onAuthStateChanged(AuthState state) {
+    if (state == AuthState.LOGGED_IN)
+      Navigator.of(_ctx).pushReplacementNamed("/home");
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    _ctx = context;
+    var loginBtn = new RaisedButton(
+      onPressed: _submit,
+      child: new Text("LOGIN"),
+      color: Colors.primaries[0],
+    );
+    var loginForm = new Column(
+      children: <Widget>[
+        new Text(
+          "Login",
+          textScaleFactor: 2.0,
+        ),
+        new Form(
+          key: formKey,
+          child: new Column(
+            children: <Widget>[
+              new Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: new TextFormField(
+                  onSaved: (val) => _email = val,
+                  validator: (val) {
+                    return val.length < 10
+                        ? "email must have atleast 10 chars"
+                        : null;
+                  },
+                  decoration: new InputDecoration(labelText: "email"),
+                ),
+              ),
+              new Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: new TextFormField(
+                  onSaved: (val) => _password = val,
+                  decoration: new InputDecoration(labelText: "Password"),
+                ),
+              ),
+            ],
+          ),
+        ),
+        _isLoading ? new CircularProgressIndicator() : loginBtn
+      ],
+      crossAxisAlignment: CrossAxisAlignment.center,
+    );
+
+    return new Scaffold(
+      appBar: null,
+      key: scaffoldKey,
+      body: new Container(
+        decoration: new BoxDecoration(
+          image: new DecorationImage(
+              image: new AssetImage("assets/login_background.jpg"),
+              fit: BoxFit.cover),
+        ),
+        child: new Center(
+          child: new ClipRect(
+            child: new BackdropFilter(
+              filter: new ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
+              child: new Container(
+                child: loginForm,
+                height: 300.0,
+                width: 300.0,
+                decoration: new BoxDecoration(
+                    color: Colors.grey.shade200.withOpacity(0.5)),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  @override
+  void onLoginError(String errorTxt) {
+    _showSnackBar(errorTxt);
+    setState(() => _isLoading = false);
+  }
+
+  @override
+  void onLoginSuccess(User user) async {
+    _showSnackBar(user.toString());
+    setState(() => _isLoading = false);
+    var db = new DatabaseHelper();
+    await db.saveUser(user);
+    var authStateProvider = new AuthStateProvider();
+    authStateProvider.notify(AuthState.LOGGED_IN);
+  }
+}
diff --git a/lib/screens/login/login_screen_presenter.dart b/lib/screens/login/login_screen_presenter.dart
new file mode 100644
index 0000000..fc5da4f
--- /dev/null
+++ b/lib/screens/login/login_screen_presenter.dart
@@ -0,0 +1,19 @@
+import 'package:beam_messenger/data/rest_ds.dart';
+import 'package:beam_messenger/models/user.dart';
+
+abstract class LoginScreenContract {
+  void onLoginSuccess(User user);
+  void onLoginError(String errorTxt);
+}
+
+class LoginScreenPresenter {
+  LoginScreenContract _view;
+  RestDatasource api = new RestDatasource();
+  LoginScreenPresenter(this._view);
+
+  doLogin(String email, String password) {
+    api.login(email, password).then((User user) {
+      _view.onLoginSuccess(user);
+    }).catchError((Exception error) => _view.onLoginError(error.toString()));
+  }
+}