Add like button on group page

lib/helpers/groups_helper.dart

@@ -210,7 +210,7 @@ class GroupsHelper {
         timeCreate: map["time_create"],
         description: map["description"],
         url: map["url"],
-        numberLikes: map["number_likes"],
-        isLiking: map["is_liking"],
+        likes: map["number_likes"],
+        userLike: map["is_liking"],
       );
 }

lib/models/advanced_group_info.dart

@@ -1,3 +1,5 @@
+import 'package:comunic/enums/likes_type.dart';
+import 'package:comunic/models/like_element.dart';
 import 'package:flutter/material.dart';
 
 import 'group.dart';
@@ -6,12 +8,12 @@ import 'group.dart';
 ///
 /// @author Pierre Hubert
 
-class AdvancedGroupInfo extends Group {
+class AdvancedGroupInfo extends Group implements LikeElement {
   final int timeCreate;
   final String description;
   final String url;
-  final int numberLikes;
-  final bool isLiking;
+  int likes;
+  bool userLike;
 
   AdvancedGroupInfo({
     @required int id,
@@ -27,8 +29,8 @@ class AdvancedGroupInfo extends Group {
     @required this.timeCreate,
     @required this.description,
     @required this.url,
-    @required this.numberLikes,
-    @required this.isLiking,
+    @required this.likes,
+    @required this.userLike,
   }) : super(
             id: id,
             name: name,
@@ -40,4 +42,7 @@ class AdvancedGroupInfo extends Group {
             postCreationLevel: postCreationLevel,
             virtualDirectory: virtualDirectory,
             following: following);
+
+  @override
+  LikesType likeType = LikesType.GROUP;
 }

lib/ui/screens/authorized_group_page_screen.dart

@@ -2,6 +2,7 @@ import 'package:comunic/models/advanced_group_info.dart';
 import 'package:comunic/ui/widgets/group_following_widget.dart';
 import 'package:comunic/ui/widgets/group_icon_widget.dart';
 import 'package:comunic/ui/widgets/group_membership_widget.dart';
+import 'package:comunic/ui/widgets/like_widget.dart';
 import 'package:flutter/material.dart';
 
 /// Authorized group page screen
@@ -57,11 +58,19 @@ class _AuthorizedGroupPageScreenState extends State<AuthorizedGroupPageScreen> {
                 group: _group,
                 onUpdated: () => widget.needRefresh(),
               ),
-              Container(height: 10,),
+              Container(
+                height: 4,
+              ),
               GroupFollowingWidget(
                 group: _group,
                 onUpdated: () => widget.needRefresh(),
               ),
+              Container(
+                height: 2,
+              ),
+              LikeWidget(
+                likeElement: _group,
+              )
             ],
           )
         ],