added initial activity feed

lib/activity_feed.dart

@@ -0,0 +1,145 @@
+import 'package:flutter/material.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
+
+class ActivityFeedPage extends StatefulWidget {
+  @override
+  _ActivityFeedPageState createState() => new _ActivityFeedPageState();
+}
+
+class _ActivityFeedPageState extends State<ActivityFeedPage> {
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      appBar: new AppBar(
+        title: new Text(
+          "Activity Feed",
+          style: new TextStyle(color: Colors.black),
+        ),
+        backgroundColor: Colors.white,
+      ),
+      body: buildActivityFeed(),
+    );
+  }
+
+  buildActivityFeed() {
+    return new Container(
+      child: new FutureBuilder(
+          future: getFeed(),
+          builder: (context, snapshot) {
+            if (!snapshot.hasData)
+              return new Container(
+                  alignment: FractionalOffset.center,
+                  padding: const EdgeInsets.only(top: 10.0),
+                  child: new CircularProgressIndicator());
+            else {
+              return new ListView(children: snapshot.data);
+            }
+          }),
+    );
+  }
+
+  getFeed() async {
+    List<ActivityFeedItem> items = [];
+    var snap = await Firestore.instance
+        .collection('insta_a_feed')
+        .document("xnnP5qKOw10S8hRyhG0B" /*currentUserModel.id*/)
+        .getCollection("items")
+        .orderBy("timestamp")
+        .getDocuments();
+
+    for (var doc in snap.documents) {
+      items.add(new ActivityFeedItem.fromDocument(doc));
+    }
+    return items;
+  }
+}
+
+class ActivityFeedItem extends StatelessWidget {
+  final String username;
+  final String userId;
+  final String
+      type; // potetial types include liked photo, follow user, comment on photo
+  final String mediaUrl;
+  final String userProfileImg;
+  final String commentData;
+
+  ActivityFeedItem(
+      {this.username,
+      this.userId,
+      this.type,
+      this.mediaUrl,
+      this.userProfileImg,
+      this.commentData});
+
+  factory ActivityFeedItem.fromDocument(DocumentSnapshot document) {
+    return new ActivityFeedItem(
+      username: document['username'],
+      userId: document['userId'],
+      type: document['type'],
+      mediaUrl: document['mediaUrl'],
+      userProfileImg: document['userProfileImg'],
+      commentData: document["commentData"],
+    );
+  }
+
+  Widget mediaPreview = new Container();
+  String actionText;
+
+  void configureItem() {
+    if (type == "like") {
+      actionText = "$username liked your post.";
+
+      mediaPreview = // new Image.network(mediaUrl, height: 100.0, fit: BoxFit.cover);
+
+          new Container(
+        height: 45.0,
+        width: 45.0,
+        child: new AspectRatio(
+          aspectRatio: 487 / 451,
+          child: new Container(
+            decoration: new BoxDecoration(
+                image: new DecorationImage(
+              fit: BoxFit.fill,
+              alignment: FractionalOffset.topCenter,
+              image: new NetworkImage(mediaUrl),
+            )),
+          ),
+        ),
+      );
+    } else if (type == "follow") {
+      actionText = "$username starting following you.";
+    } else if (type == "comment") {
+      actionText = "$username commented: $commentData";
+
+      mediaPreview = new Image.network(mediaUrl);
+    } else {
+      actionText = "Error - invalid activityFeed type: $type";
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    configureItem();
+    return new Row(
+      children: <Widget>[
+        new Padding(
+          padding: const EdgeInsets.only(left: 20.0, right: 15.0),
+          child: new CircleAvatar(
+            radius: 23.0,
+            backgroundImage: new NetworkImage(userProfileImg),
+          ),
+        ),
+        new Text(actionText),
+        new Expanded(child: new Align(
+            child: new Padding(
+              child: mediaPreview,
+              padding: new EdgeInsets.all(15.0),
+            ),
+            alignment: AlignmentDirectional.bottomEnd
+        ))
+
+      ],
+    );
+
+  }
+}

lib/main.dart

@@ -7,6 +7,7 @@ import 'package:firebase_auth/firebase_auth.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'profile_page.dart';
 import 'search_page.dart';
+import 'activity_feed.dart';
 
 final auth = FirebaseAuth.instance;
 final googleSignIn = new GoogleSignIn();
@@ -20,7 +21,9 @@ Future<Null> _ensureLoggedIn() async {
     user = await googleSignIn.signInSilently();
   }
   if (user == null) {
-    await googleSignIn.signIn().then((_) {tryCreateUserRecord();});
+    await googleSignIn.signIn().then((_) {
+      tryCreateUserRecord();
+    });
   }
 
   if (await auth.currentUser() == null) {
@@ -35,7 +38,9 @@ Future<Null> _silentLogin() async {
   GoogleSignInAccount user = googleSignIn.currentUser;
 
   if (user == null) {
-    user = await googleSignIn.signInSilently().then((_) {tryCreateUserRecord();});
+    user = await googleSignIn.signInSilently().then((_) {
+      tryCreateUserRecord();
+    });
   }
 
   if (await auth.currentUser() == null && user != null) {
@@ -85,8 +90,7 @@ class Fluttergram extends StatelessWidget {
           // counter didn't reset back to zero; the application is not restarted.
           primarySwatch: Colors.blue,
           buttonColor: Colors.pink,
-        primaryIconTheme: new IconThemeData(color: Colors.black)
-      ),
+          primaryIconTheme: new IconThemeData(color: Colors.black)),
       home: new HomePage(title: 'Fluttergram'),
     );
   }
@@ -139,7 +143,7 @@ class _HomePageState extends State<HomePage> {
   Widget build(BuildContext context) {
     if (triedSilentLogin == false) {
       silentLogin();
-    } // might cause performance issues?
+    }
     return googleSignIn.currentUser == null
         ? buildLoginPage()
         : new Scaffold(
@@ -149,12 +153,13 @@ class _HomePageState extends State<HomePage> {
                   color: Colors.white,
                   child: new Feed(),
                 ),
+                new Container(color: Colors.white, child: new SearchPage()),
+
                 new Container(
                   color: Colors.green,
-                  child: new SearchPage(),
+                  child: new Uploader(),
                 ),
-                new Container(color: Colors.white, child: new Uploader()),
-                new Container(color: Colors.amber),
+                new Container(color: Colors.white, child: new ActivityFeedPage()),
                 new Container(
                     color: Colors.white,
                     child: new ProfilePage(

lib/profile_page.dart

@@ -65,7 +65,7 @@ class _ProfilePage extends State<ProfilePage> {
       "ownerId": profileId,
       "username": currentUserModel.username,
       "userId": currentUserId,
-      "type": "like",
+      "type": "follow",
       "userProfileImg": currentUserModel.photoUrl,
       "timestamp": new DateTime.now().toString()
     });

lib/upload_page.dart

@@ -21,13 +21,22 @@ class _Uploader extends State<Uploader> {
   bool uploading = false;
   bool promted = false;
 
-  Widget build(BuildContext context) {
+  @override
+  initState(){
+
+
     if (file == null && promted == false) {
       _selectImage();
       setState(() {
         promted = true;
       });
     }
+    print("ss");
+    super.initState();
+  }
+
+  Widget build(BuildContext context) {
+
 
     return file == null
         ? new IconButton(
@@ -72,7 +81,7 @@ class _Uploader extends State<Uploader> {
         barrierDismissible: false, // user must tap button!
 
         child: new SimpleDialog(
-          title: const Text('Select assignment'),
+          title: const Text('Create a Post'),
           children: <Widget>[
             new SimpleDialogOption(
                 child: const Text('Take a photo'),