added firebase auth + login

firestore_test.iml

@@ -45,7 +45,6 @@
       <excludeFolder url="file://$MODULE_DIR$/cloud_firestore/packages" />
       <excludeFolder url="file://$MODULE_DIR$/cloud_firestore/test/packages" />
       <excludeFolder url="file://$MODULE_DIR$/packages" />
-      <excludeFolder url="file://$MODULE_DIR$/test/packages" />
     </content>
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="Dart SDK" level="project" />

lib/main.dart

@@ -1,6 +1,43 @@
 import 'package:flutter/material.dart';
 import 'feed.dart';
 import 'upload_page.dart';
+import 'dart:async';
+import 'package:google_sign_in/google_sign_in.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+
+final auth = FirebaseAuth.instance;
+final googleSignIn = new GoogleSignIn();
+
+Future<Null> _ensureLoggedIn() async {
+  GoogleSignInAccount user = googleSignIn.currentUser;
+  if (user == null) {
+    user = await googleSignIn.signInSilently();
+  }
+  if (user == null) {
+    await googleSignIn.signIn();
+  }
+
+  if (await auth.currentUser() == null) {
+    GoogleSignInAuthentication credentials =
+        await googleSignIn.currentUser.authentication;
+    await auth.signInWithGoogle(
+        idToken: credentials.idToken, accessToken: credentials.accessToken);
+  }
+}
+
+Future<Null> _silentLogin() async {
+  GoogleSignInAccount user = googleSignIn.currentUser;
+  if (user == null) {
+    user = await googleSignIn.signInSilently();
+  }
+
+  if (await auth.currentUser() == null && user != null) {
+    GoogleSignInAuthentication credentials =
+        await googleSignIn.currentUser.authentication;
+    await auth.signInWithGoogle(
+        idToken: credentials.idToken, accessToken: credentials.accessToken);
+  }
+}
 
 void main() => runApp(new MyApp());
 
@@ -21,7 +58,7 @@ class MyApp extends StatelessWidget {
         // counter didn't reset back to zero; the application is not restarted.
         primarySwatch: Colors.blue,
       ),
-      home: new HomePage(title: 'Flutter Demo Home Page'),
+      home: new HomePage(title: 'Fluttergram'),
     );
   }
 }
@@ -38,20 +75,38 @@ class _HomePageState extends State<HomePage> {
   PageController _pageController;
 
   int _page = 0;
+  bool triedSilentLogin = false;
 
   @override
   Widget build(BuildContext context) {
-    return new Scaffold(
+    if (triedSilentLogin == false) {
+      silentLogin();
+    } // might cause performance issues?
+    return googleSignIn.currentUser == null
+        ? new Container(
+            alignment: FractionalOffset.center,
+            width: 20.0,
+            child: new RaisedButton(
+              onPressed: login,
+              child: new Row(children: <Widget>[
+                new Icon(Icons.business),
+                new Text("Sign in with Google")
+              ]),
+            ),
+          )
+        : new Scaffold(
             body: new PageView(
               children: [
                 new Container(
                   color: Colors.white,
                   child: new Feed(),
                 ),
-          new Container(color: Colors.green,),
+                new Container(
+                  color: Colors.green,
+                ),
                 new Container(color: Colors.white, child: new Uploader()),
                 new Container(color: Colors.amber),
-          new Container(color: Colors.white, child: new PostForm()),
+                new Container(color: Colors.white, child: new Text('Test')),
               ],
               controller: _pageController,
               physics: new NeverScrollableScrollPhysics(),
@@ -86,6 +141,18 @@ class _HomePageState extends State<HomePage> {
           );
   }
 
+  void login() async {
+    await _ensureLoggedIn();
+    setState(() {
+      triedSilentLogin = true;
+    });
+  }
+
+  void silentLogin() async {
+    await _silentLogin();
+    setState(() {});
+  }
+
   void navigationTapped(int page) {
     //Animating Page
     _pageController.jumpToPage(page);

pubspec.lock

@@ -92,6 +92,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.1"
+  firebase_auth:
+    dependency: "direct main"
+    description:
+      name: firebase_auth
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.5.0"
   firebase_storage:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -7,9 +7,11 @@ dependencies:
   cloud_firestore: 0.3.0
   image_picker: 0.1.1
   firebase_storage: 0.2.0
+  firebase_auth: 0.5.0
   google_sign_in: 3.0.0
   uuid: 0.5.3
 
+
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.0