Ready to implement the list of notifications

lib/helpers/notifications_helper.dart

@@ -0,0 +1,78 @@
+import 'package:comunic/lists/notifications_list.dart';
+import 'package:comunic/models/api_request.dart';
+import 'package:comunic/models/notification.dart';
+
+/// Notifications helper
+///
+/// @author Pierre HUBERT
+
+const _NotificationElementTypeAPImapping = {
+  "user_page": NotificationElementType.USER_PAGE,
+  "group_page": NotificationElementType.GROUP_PAGE,
+  "conversation": NotificationElementType.CONVERSATION,
+  "conversation_message": NotificationElementType.CONVERSATION_MESSAGE,
+  "post": NotificationElementType.POST,
+  "post_text": NotificationElementType.POST_TEXT,
+  "post_img": NotificationElementType.POST_IMAGE,
+  "post_youtube": NotificationElementType.POST_YOUTUBE,
+  "post_movie": NotificationElementType.POST_MOVIE,
+  "post_weblink": NotificationElementType.POST_WEBLINK,
+  "post_pdf": NotificationElementType.POST_PDF,
+  "post_timer": NotificationElementType.POST_TIMER,
+  "post_survey": NotificationElementType.POST_SURVEY,
+  "comment": NotificationElementType.COMMENT,
+  "friend_request": NotificationElementType.FRIENDSHIP_REQUEST,
+  "group_membership": NotificationElementType.GROUP_MEMBERSHIP,
+};
+
+const _NotificationsTypeAPImapping = {
+  "comment_created": NotificationType.COMMENT_CREATED,
+  "sent_friend_request": NotificationType.SENT_FRIEND_REQUEST,
+  "accepted_friend_request": NotificationType.ACCEPTED_FRIEND_REQUEST,
+  "rejected_friend_request": NotificationType.REJECTED_FRIEND_REQUEST,
+  "elem_created": NotificationType.ELEM_CREATED,
+  "elem_updated": NotificationType.ELEM_UPDATED,
+  "sent_group_membership_invitation":
+      NotificationType.SENT_GROUP_MEMBERSHIP_INVITATION,
+  "accepted_group_membership_invitation":
+      NotificationType.ACCEPTED_GROUP_MEMBERSHIP_INVITATION,
+  "rejected_group_membership_invitation":
+      NotificationType.REJECTED_GROUP_MEMBERSHIP_INVITATION,
+  "sent_group_membership_request":
+      NotificationType.SENT_GROUP_MEMBERSHIP_REQUEST,
+  "accepted_group_membership_request":
+      NotificationType.ACCEPTED_GROUP_MEMBERSHIP_REQUEST,
+  "rejected_group_membership_request":
+      NotificationType.REJECTED_GROUP_MEMBERSHIP_REQUEST,
+};
+
+class NotificationsHelper {
+  /// Get the list of unread notifications of the user
+  Future<NotificationsList> getUnread() async {
+    final response =
+        await APIRequest(uri: "notifications/get_list_unread", needLogin: true)
+            .exec();
+
+    if (!response.isOK)
+      throw Exception("Could not get the list of notifications!");
+
+    // Parse the list of notifications
+    return NotificationsList()
+      ..addAll(response
+          .getArray()
+          .map((f) => Notification(
+              id: f["id"],
+              timeCreate: f["time_create"],
+              seen: f["seen"],
+              fromUser: f["from_user_id"],
+              onElemId: f["on_elem_id"],
+              onElemType: _NotificationElementTypeAPImapping[f["on_elem_type"]],
+              type: _NotificationsTypeAPImapping[f["type"]],
+              fromContainerId: f["from_container_id"],
+              fromContainerType: f["from_container_type"] == ""
+                  ? null
+                  : _NotificationElementTypeAPImapping[
+                      f["from_container_type"]]))
+          .toList());
+  }
+}

lib/lists/abstract_list.dart

@@ -0,0 +1,19 @@
+import 'dart:collection';
+
+/// Abstract list
+///
+/// @author Pierre HUBERT
+
+class AbstractList<E> extends ListBase<E> {
+  final _list = List<E>();
+
+  int get length => _list.length;
+
+  set length(int l) => _list.length = l;
+
+  @override
+  E operator [](int index) => _list[index];
+
+  @override
+  void operator []=(int index, E value) => _list[index] = value;
+}

lib/lists/notifications_list.dart

@@ -0,0 +1,8 @@
+import 'package:comunic/lists/abstract_list.dart';
+import 'package:comunic/models/notification.dart';
+
+/// Notifications list
+///
+/// @author Pierre HUBERT
+
+class NotificationsList extends AbstractList<Notification> {}

lib/models/notification.dart

@@ -0,0 +1,69 @@
+import 'package:flutter/widgets.dart';
+
+/// Notification model
+///
+/// @author Pierre HUBERT
+
+enum NotificationElementType {
+  USER_PAGE,
+  GROUP_PAGE,
+  CONVERSATION,
+  CONVERSATION_MESSAGE,
+  POST,
+  POST_TEXT,
+  POST_IMAGE,
+  POST_YOUTUBE,
+  POST_MOVIE,
+  POST_WEBLINK,
+  POST_PDF,
+  POST_TIMER,
+  POST_SURVEY,
+  COMMENT,
+  FRIENDSHIP_REQUEST,
+  GROUP_MEMBERSHIP,
+}
+
+enum NotificationType {
+  COMMENT_CREATED,
+  SENT_FRIEND_REQUEST,
+  ACCEPTED_FRIEND_REQUEST,
+  REJECTED_FRIEND_REQUEST,
+  ELEM_CREATED,
+  ELEM_UPDATED,
+  SENT_GROUP_MEMBERSHIP_INVITATION,
+  ACCEPTED_GROUP_MEMBERSHIP_INVITATION,
+  REJECTED_GROUP_MEMBERSHIP_INVITATION,
+  SENT_GROUP_MEMBERSHIP_REQUEST,
+  ACCEPTED_GROUP_MEMBERSHIP_REQUEST,
+  REJECTED_GROUP_MEMBERSHIP_REQUEST,
+}
+
+class Notification {
+  final int id;
+  final int timeCreate;
+  final bool seen;
+  final int fromUser;
+  final int onElemId;
+  final NotificationElementType onElemType;
+  final NotificationType type;
+  final int fromContainerId;
+  final NotificationElementType fromContainerType;
+
+  const Notification({
+    @required this.id,
+    @required this.timeCreate,
+    @required this.seen,
+    @required this.fromUser,
+    @required this.onElemId,
+    @required this.onElemType,
+    @required this.type,
+    @required this.fromContainerId,
+    @required this.fromContainerType,
+  })  : assert(id != null),
+        assert(timeCreate != null),
+        assert(seen != null),
+        assert(fromUser != null),
+        assert(onElemId != null),
+        assert(onElemType != null),
+        assert(type != null);
+}

lib/ui/routes/home_route.dart

@@ -3,6 +3,7 @@ import 'package:comunic/ui/routes/app_settings_route.dart';
 import 'package:comunic/ui/screens/conversations_list_screen.dart';
 import 'package:comunic/ui/screens/friends_list_screen.dart';
 import 'package:comunic/ui/screens/newest_posts.dart';
+import 'package:comunic/ui/screens/notifications_screen.dart';
 import 'package:comunic/ui/widgets/navbar_widget.dart';
 import 'package:comunic/utils/account_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
@@ -76,6 +77,9 @@ class _HomeRouteState extends State<HomeRoute> {
   /// Build the body of the application
   Widget _buildBody(BuildContext context) {
     switch (_currTab) {
+      case BarCallbackActions.OPEN_NOTIFICATIONS:
+        return NotificationsScreen();
+
       case BarCallbackActions.OPEN_CONVERSATIONS:
         return ConversationsListScreen();
 

lib/ui/screens/notifications_screen.dart

@@ -0,0 +1,46 @@
+import 'package:comunic/lists/notifications_list.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Notifications screen
+///
+/// @author Pierre HUBERT
+
+enum _Status { LOADING, ERROR, NONE }
+
+class NotificationsScreen extends StatefulWidget {
+  @override
+  _NotificationsScreenState createState() => _NotificationsScreenState();
+}
+
+class _NotificationsScreenState extends State<NotificationsScreen> {
+  NotificationsList _list;
+  _Status _status = _Status.LOADING;
+
+  void setStatus(_Status s) => setState(() => _status = s);
+
+  Future<void> _loadList() async {
+    setStatus(_Status.LOADING);
+
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // In case of error
+    if (_status == _Status.ERROR)
+      return buildErrorCard(tr("Could not get the list of notifications!"),
+          actions: [
+            MaterialButton(
+              onPressed: () => _loadList(),
+              child: Text(tr("Try again".toUpperCase())),
+            )
+          ]);
+
+    // Loading status
+    if (_list == null || _status == _Status.LOADING)
+      return Center(
+        child: CircularProgressIndicator(),
+      );
+  }
+}

lib/ui/widgets/navbar_widget.dart

@@ -10,6 +10,7 @@ typedef OnSelectMenuAction = void Function(BarCallbackActions);
 
 /// Callback actions
 enum BarCallbackActions {
+  OPEN_NOTIFICATIONS,
   OPEN_CONVERSATIONS,
   OPEN_NEWEST_POSTS,
   OPEN_FRIENDS,
@@ -20,6 +21,7 @@ enum BarCallbackActions {
 }
 
 Color _primaryColor() => darkTheme() ? Colors.black : Colors.blue;
+
 Color _secondaryColor() => darkTheme() ? darkAccentColor : Colors.white;
 
 /// Menu item information
@@ -52,6 +54,10 @@ class _ActionMenuItem {
 
 /// List of menu items to show
 final _menuItems = <_MenuItem>[
+  _MenuItem(
+      label: tr("Notifications"),
+      icon: Icon(Icons.notifications),
+      action: BarCallbackActions.OPEN_NOTIFICATIONS),
   _MenuItem(
       label: tr("Conversations"),
       icon: Icon(Icons.comment),