Displaying Timeline Posts

lib/pages/home.dart

@@ -15,6 +15,9 @@ import 'timeline.dart';
 import 'upload.dart';
 
 final GoogleSignIn googleSignIn = GoogleSignIn();
+final DateTime timestamp = DateTime.now();
+User currentUser;
+
 final StorageReference storageRef = FirebaseStorage.instance.ref();
 final CollectionReference usersRef = Firestore.instance.collection('users');
 final CollectionReference postsRef = Firestore.instance.collection('posts');
@@ -26,8 +29,8 @@ final CollectionReference followersRef =
     Firestore.instance.collection('followers');
 final CollectionReference followingRef =
     Firestore.instance.collection('following');
-final DateTime timestamp = DateTime.now();
-User currentUser;
+final CollectionReference timelineRef =
+    Firestore.instance.collection('timeline');
 
 class Home extends StatefulWidget {
   @override
@@ -131,7 +134,7 @@ class _HomeState extends State<Home> {
     return Scaffold(
       body: PageView(
         children: <Widget>[
-          Timeline(),
+          Timeline(currentUser: currentUser),
           ActivityFeed(),
           Upload(currentUser: currentUser),
           Search(),

lib/pages/timeline.dart

@@ -1,23 +1,63 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
+import 'package:fluttershare/models/post.dart';
+import 'package:fluttershare/models/user.dart';
+import 'package:fluttershare/pages/home.dart';
+import 'package:fluttershare/widgets/post_widget.dart';
+import 'package:fluttershare/widgets/progress.dart';
 
 import '../widgets/header.dart';
 
 class Timeline extends StatefulWidget {
+  final User currentUser;
+  Timeline({this.currentUser});
+
   @override
   _TimelineState createState() => _TimelineState();
 }
 
 class _TimelineState extends State<Timeline> {
+  List<PostWidget> posts = [];
   @override
   void initState() {
     super.initState();
+    getTimeline();
+  }
+
+  getTimeline() async {
+    QuerySnapshot snapshot = await timelineRef
+        .document(widget.currentUser.id)
+        .collection('timelinePosts')
+        .orderBy('timestamp', descending: true)
+        .getDocuments();
+    List<PostWidget> posts = snapshot.documents
+        .map((doc) => PostWidget(Post.fromDocument(doc)))
+        .toList();
+    setState(() {
+      this.posts = posts;
+    });
+  }
+
+  buildTimeline() {
+    if (posts == null) {
+      return circularProgress();
+    } else if (posts.isEmpty) {
+      return Text('No posts');
+    } else {
+      return ListView(
+        children: posts,
+      );
+    }
   }
 
   @override
   Widget build(context) {
     return Scaffold(
       appBar: header(context, isAppTitle: true),
-      body: Text('Timeline'),
+      body: RefreshIndicator(
+        onRefresh: () => getTimeline(),
+        child: buildTimeline(),
+      ),
     );
   }
 }