From 302e5f22ce576dada42a72c5df540f5022f2d9ca Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Thu, 16 Apr 2020 09:17:10 +0200
Subject: [PATCH] Can load older posts on user page

---
 lib/helpers/posts_helper.dart      |  7 +++---
 lib/ui/routes/user_page_route.dart | 36 +++++++++++++++++++++---------
 2 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/lib/helpers/posts_helper.dart b/lib/helpers/posts_helper.dart
index 8bdac36..0f554e2 100644
--- a/lib/helpers/posts_helper.dart
+++ b/lib/helpers/posts_helper.dart
@@ -67,10 +67,9 @@ class PostsHelper {
 
   /// Get the list of posts of a user
   Future<PostsList> getUserPosts(int userID, {int from = 0}) async {
-    final response = await APIRequest(
-            uri: "posts/get_user",
-            needLogin: true,
-            args: {"userID": userID.toString(), "startFrom": from.toString()})
+    final response = await (APIRequest(uri: "posts/get_user", needLogin: true)
+          ..addInt("userID", userID)
+          ..addInt("startFrom", from == 0 ? 0 : from - 1))
         .exec();
 
     if (response.code != 200) return null;
diff --git a/lib/ui/routes/user_page_route.dart b/lib/ui/routes/user_page_route.dart
index d4d2f74..2b47e68 100644
--- a/lib/ui/routes/user_page_route.dart
+++ b/lib/ui/routes/user_page_route.dart
@@ -7,6 +7,7 @@ import 'package:comunic/ui/routes/user_access_denied_route.dart';
 import 'package:comunic/ui/widgets/network_image_widget.dart';
 import 'package:comunic/ui/widgets/post_create_form_widget.dart';
 import 'package:comunic/ui/widgets/posts_list_widget.dart';
+import 'package:comunic/ui/widgets/scroll_watcher.dart';
 import 'package:comunic/utils/conversations_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
@@ -43,8 +44,19 @@ class _UserPageRouteState extends State<UserPageRoute> {
   GlobalKey<RefreshIndicatorState> _refreshIndicatorKey =
       GlobalKey<RefreshIndicatorState>();
 
+  // Scroll detection (to load more user posts automatically)
+  final _postListKey = GlobalKey<PostsListWidgetState>();
+  ScrollWatcher _scrollWatcher;
+
   _setStatus(_PageStatus s) => setState(() => _status = s);
 
+  @override
+  void initState() {
+    _scrollWatcher = ScrollWatcher(
+        onReachBottom: () => _postListKey.currentState.reachedPostsBottom());
+    super.initState();
+  }
+
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
@@ -69,8 +81,8 @@ class _UserPageRouteState extends State<UserPageRoute> {
         Navigator.of(context).pushReplacement(
           MaterialPageRoute(
             builder: (c) => UserAccessDeniedRoute(
-                  userID: widget.userID,
-                ),
+              userID: widget.userID,
+            ),
           ),
         );
     }
@@ -88,6 +100,7 @@ class _UserPageRouteState extends State<UserPageRoute> {
         child: CustomScrollView(
           slivers: <Widget>[_buildHeader(), _buildBody()],
           physics: AlwaysScrollableScrollPhysics(),
+          controller: _scrollWatcher,
         ),
         onRefresh: _getUserInfo,
       ),
@@ -165,12 +178,12 @@ class _UserPageRouteState extends State<UserPageRoute> {
         ),
         PopupMenuButton<_MenuOptions>(
           itemBuilder: (c) => [
-                PopupMenuItem(
-                  child: Text(tr("Friends")),
-                  enabled: _userInfo != null,
-                  value: _MenuOptions.FRIENDS_LIST,
-                )
-              ],
+            PopupMenuItem(
+              child: Text(tr("Friends")),
+              enabled: _userInfo != null,
+              value: _MenuOptions.FRIENDS_LIST,
+            )
+          ],
           onSelected: _selectedMenuOption,
         ),
       ],
@@ -192,7 +205,10 @@ class _UserPageRouteState extends State<UserPageRoute> {
 
           // Posts list
           PostsListWidget(
+            key: _postListKey,
             getPostsList: () => _postsHelper.getUserPosts(widget.userID),
+            getOlder: (from) =>
+                _postsHelper.getUserPosts(widget.userID, from: from),
             showPostsTarget: false,
             buildListView: false,
           ),
@@ -208,8 +224,8 @@ class _UserPageRouteState extends State<UserPageRoute> {
         Navigator.of(context).push(
           MaterialPageRoute(
             builder: (c) => OtherUserFriendsListRoute(
-                  user: _userInfo,
-                ),
+              user: _userInfo,
+            ),
           ),
         );
         break;