Can delete posts

lib/helpers/posts_helper.dart

@@ -56,6 +56,16 @@ class PostsHelper {
     }
   }
 
+  /// Delete a post
+  Future<bool> delete(int id) async {
+    return (await APIRequest(
+      uri: "posts/delete",
+      needLogin: true,
+      args: {"postID": id.toString()},
+    ).exec())
+        .isOK;
+  }
+
   /// Turn an API entry into a [Post] object
   Post _apiToPost(Map<String, dynamic> map) {
     // Parse comments

lib/models/post.dart

@@ -32,29 +32,29 @@ class Post implements LikeElement {
   final UserAccessLevels access;
   final CommentsList comments;
 
-  Post({
-    @required this.id,
-    @required this.userID,
-    @required this.userPageID,
-    @required this.groupID,
-    @required this.timeSent,
-    @required this.content,
-    @required this.visibilityLevel,
-    @required this.kind,
-    @required this.fileSize,
-    @required this.fileType,
-    @required this.filePath,
-    @required this.fileURL,
-    @required this.timeEnd,
-    @required this.linkURL,
-    @required this.linkTitle,
-    @required this.linkDescription,
-    @required this.linkImage,
-    @required this.likes,
-    @required this.userLike,
-    @required this.access,
-    @required this.comments
-  })  : assert(id != null),
+  Post(
+      {@required this.id,
+      @required this.userID,
+      @required this.userPageID,
+      @required this.groupID,
+      @required this.timeSent,
+      @required this.content,
+      @required this.visibilityLevel,
+      @required this.kind,
+      @required this.fileSize,
+      @required this.fileType,
+      @required this.filePath,
+      @required this.fileURL,
+      @required this.timeEnd,
+      @required this.linkURL,
+      @required this.linkTitle,
+      @required this.linkDescription,
+      @required this.linkImage,
+      @required this.likes,
+      @required this.userLike,
+      @required this.access,
+      @required this.comments})
+      : assert(id != null),
         assert(userID != null),
         assert(userPageID != 0 || groupID != 0),
         assert(timeSent != null),
@@ -69,4 +69,8 @@ class Post implements LikeElement {
   bool get hasContent => content != null;
 
   bool get hasComments => comments != null;
+
+  bool get canDelete =>
+      access == UserAccessLevels.FULL ||
+      access == UserAccessLevels.INTERMEDIATE;
 }

lib/ui/tiles/post_tile.dart

@@ -4,6 +4,7 @@ import 'package:comunic/enums/likes_type.dart';
 import 'package:comunic/enums/post_kind.dart';
 import 'package:comunic/helpers/comments_helper.dart';
 import 'package:comunic/helpers/likes_helper.dart';
+import 'package:comunic/helpers/posts_helper.dart';
 import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/comment.dart';
 import 'package:comunic/models/like_element.dart';
@@ -29,16 +30,22 @@ const TextStyle _userNameStyle = TextStyle(
     fontWeight: FontWeight.w600,
     fontSize: 16.0);
 
+/// Post actions
+enum _PostActions { DELETE }
+
 class PostTile extends StatefulWidget {
   final Post post;
   final UsersList usersInfo;
+  final void Function(Post) onDeletedPost;
 
   const PostTile({
     Key key,
     @required this.post,
     @required this.usersInfo,
+    @required this.onDeletedPost,
   })  : assert(post != null),
         assert(usersInfo != null),
+        assert(onDeletedPost != null),
         super(key: key);
 
   @override
@@ -47,6 +54,7 @@ class PostTile extends StatefulWidget {
 
 class _PostTileState extends State<PostTile> {
   // Helpers
+  final _postsHelper = PostsHelper();
   final _likesHelper = LikesHelper();
   final _commentsHelper = CommentsHelper();
 
@@ -89,8 +97,16 @@ class _PostTileState extends State<PostTile> {
           ),
         ),
 
-        PopupMenuButton(
-          itemBuilder: (c) => [],
+        PopupMenuButton<_PostActions>(
+          itemBuilder: (c) => [
+                // Delete post
+                PopupMenuItem(
+                  child: Text(tr("Delete")),
+                  value: _PostActions.DELETE,
+                  enabled: widget.post.canDelete,
+                ),
+              ],
+          onSelected: _selectedPostMenuAction,
         )
       ],
     );
@@ -402,4 +418,30 @@ class _PostTileState extends State<PostTile> {
       widget.post.comments.remove(comment);
     });
   }
+
+  /// Method called each time the user has selected an option
+  void _selectedPostMenuAction(_PostActions value) {
+    switch (value) {
+      case _PostActions.DELETE:
+        confirmDelete();
+        break;
+    }
+  }
+
+  /// Perform the deletion of the post
+  Future<void> confirmDelete() async {
+    // Ask user confirmation
+    if (!await showConfirmDialog(
+      context: context,
+      message: tr(
+          "Do you really want to delete this post ? The operation can not be reverted !"),
+    )) return;
+
+    if (!await _postsHelper.delete(widget.post.id)) {
+      showSimpleSnack(context, tr("Could not delete the post!"));
+      return;
+    }
+
+    widget.onDeletedPost(widget.post);
+  }
 }

lib/ui/widgets/posts_list_widget.dart

@@ -1,6 +1,7 @@
 import 'package:comunic/helpers/users_helper.dart';
 import 'package:comunic/lists/posts_list.dart';
 import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/post.dart';
 import 'package:comunic/ui/screens/conversation_screen.dart';
 import 'package:comunic/ui/tiles/post_tile.dart';
 import 'package:comunic/utils/intl_utils.dart';
@@ -73,6 +74,7 @@ class _PostsListWidgetState extends State<PostsListWidget> {
       itemBuilder: (c, i) => PostTile(
             post: _list[i],
             usersInfo: _users,
+            onDeletedPost: _removePost,
           ),
     );
   }
@@ -83,4 +85,6 @@ class _PostsListWidgetState extends State<PostsListWidget> {
     if (_list == null) return buildCenteredProgressBar();
     return _buildListView();
   }
+
+  void _removePost(Post post) => setState(() => _list.remove(post));
 }