[Add] feed added

frontend/lib/screens/home/feed.dart

@@ -1,4 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:twitter/screens/main/posts/list.dart';
+import 'package:twitter/services/posts.dart';
 
 class Feed extends StatefulWidget {
  Feed({Key key}) : super(key: key);
@@ -8,8 +11,12 @@ class Feed extends StatefulWidget {
 }
 
 class FeedState extends State<Feed> {
+ PostService _postService = PostService();
  @override
  Widget build(BuildContext context) {
- return Text('feed');
+ return FutureProvider.value(
+ value: _postService.getFeed(),
+ child: Scaffold(body: ListPosts()),
+ );
  }
 }

frontend/lib/screens/main/posts/list.dart

@@ -15,7 +15,6 @@ class _ListPostsState extends State<ListPosts> {
  final posts = Provider.of<List<PostModel>>(context) ?? [];
 
  return ListView.builder(
- physics: const NeverScrollableScrollPhysics(),
  itemCount: posts.length,
  itemBuilder: (context, index) {
  final post = posts[index];

frontend/lib/services/posts.dart

@@ -1,6 +1,10 @@
+import 'dart:developer';
+
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:twitter/models/post.dart';
+import 'package:twitter/services/user.dart';
+import 'package:quiver/iterables.dart';
 
 class PostService {
  List<PostModel> _postListFromSnapshot(QuerySnapshot snapshot) {
@@ -29,4 +33,33 @@ class PostService {
  .snapshots()
  .map(_postListFromSnapshot);
  }
+
+ Future<List<PostModel>> getFeed() async {
+ List<String> usersFollowing = await UserService() //['uid1', 'uid2']
+ .getUserFollowing(FirebaseAuth.instance.currentUser.uid);
+
+ var splitUsersFollowing = partition<dynamic>(usersFollowing, 10);
+ inspect(splitUsersFollowing);
+
+ List<PostModel> feedList = [];
+
+ for (int i = 0; i < splitUsersFollowing.length; i++) {
+ inspect(splitUsersFollowing.elementAt(i));
+ QuerySnapshot querySnapshot = await FirebaseFirestore.instance
+ .collection('posts')
+ .where('creator', whereIn: splitUsersFollowing.elementAt(i))
+ .orderBy('timestamp', descending: true)
+ .get();
+
+ feedList.addAll(_postListFromSnapshot(querySnapshot));
+ }
+
+ feedList.sort((a, b) {
+ var adate = a.timestamp;
+ var bdate = b.timestamp;
+ return bdate.compareTo(adate);
+ });
+
+ return feedList;
+ }
 }

frontend/lib/services/user.dart

@@ -42,6 +42,17 @@ class UserService {
  .map(_userFromFirebaseSnapshot);
  }
 
+ Future<List<String>> getUserFollowing(uid) async {
+ QuerySnapshot querySnapshot = await FirebaseFirestore.instance
+ .collection('users')
+ .doc(uid)
+ .collection('following')
+ .get();
+
+ final users = querySnapshot.docs.map((doc) => doc.id).toList();
+ return users;
+ }
+
  Stream<List<UserModel>> queryByName(search) {
  return FirebaseFirestore.instance
  .collection("users")

frontend/pubspec.lock

@@ -7,35 +7,35 @@ packages:
  name: async
  url: "https://pub.dartlang.org"
  source: hosted
- version: "2.5.0"
+ version: "2.5.0-nullsafety.1"
  boolean_selector:
  dependency: transitive
  description:
  name: boolean_selector
  url: "https://pub.dartlang.org"
  source: hosted
- version: "2.1.0"
+ version: "2.1.0-nullsafety.1"
  characters:
  dependency: transitive
  description:
  name: characters
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.1.0"
+ version: "1.1.0-nullsafety.3"
  charcode:
  dependency: transitive
  description:
  name: charcode
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.2.0"
+ version: "1.2.0-nullsafety.1"
  clock:
  dependency: transitive
  description:
  name: clock
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.1.0"
+ version: "1.1.0-nullsafety.1"
  cloud_firestore:
  dependency: "direct main"
  description:
@@ -63,7 +63,7 @@ packages:
  name: collection
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.15.0"
+ version: "1.15.0-nullsafety.3"
  convert:
  dependency: transitive
  description:
@@ -91,7 +91,7 @@ packages:
  name: fake_async
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.2.0"
+ version: "1.2.0-nullsafety.1"
  firebase_auth:
  dependency: "direct main"
  description:
@@ -218,21 +218,21 @@ packages:
  name: js
  url: "https://pub.dartlang.org"
  source: hosted
- version: "0.6.3"
+ version: "0.6.2"
  matcher:
  dependency: transitive
  description:
  name: matcher
  url: "https://pub.dartlang.org"
  source: hosted
- version: "0.12.10"
+ version: "0.12.10-nullsafety.1"
  meta:
  dependency: transitive
  description:
  name: meta
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.3.0"
+ version: "1.3.0-nullsafety.3"
  nested:
  dependency: transitive
  description:
@@ -246,7 +246,7 @@ packages:
  name: path
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.8.0"
+ version: "1.8.0-nullsafety.1"
  pedantic:
  dependency: transitive
  description:
@@ -286,56 +286,56 @@ packages:
  name: source_span
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.8.0"
+ version: "1.8.0-nullsafety.2"
  stack_trace:
  dependency: transitive
  description:
  name: stack_trace
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.10.0"
+ version: "1.10.0-nullsafety.1"
  stream_channel:
  dependency: transitive
  description:
  name: stream_channel
  url: "https://pub.dartlang.org"
  source: hosted
- version: "2.1.0"
+ version: "2.1.0-nullsafety.1"
  string_scanner:
  dependency: transitive
  description:
  name: string_scanner
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.1.0"
+ version: "1.1.0-nullsafety.1"
  term_glyph:
  dependency: transitive
  description:
  name: term_glyph
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.2.0"
+ version: "1.2.0-nullsafety.1"
  test_api:
  dependency: transitive
  description:
  name: test_api
  url: "https://pub.dartlang.org"
  source: hosted
- version: "0.2.19"
+ version: "0.2.19-nullsafety.2"
  typed_data:
  dependency: transitive
  description:
  name: typed_data
  url: "https://pub.dartlang.org"
  source: hosted
- version: "1.3.0"
+ version: "1.3.0-nullsafety.3"
  vector_math:
  dependency: transitive
  description:
  name: vector_math
  url: "https://pub.dartlang.org"
  source: hosted
- version: "2.1.0"
+ version: "2.1.0-nullsafety.3"
 sdks:
- dart: ">=2.12.0-0.0 <3.0.0"
- flutter: ">=1.20.0"
+ dart: ">=2.10.0-110 <2.11.0"
+ flutter: ">=1.20.0 <2.0.0"

frontend/pubspec.yaml

@@ -29,8 +29,6 @@ dependencies:
  cloud_firestore: ^0.16.0
  firebase_storage: ^7.0.0
  image_picker: ^0.6.7+21
-
-
  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.0