Can update comments content

lib/helpers/comments_helper.dart

@@ -37,13 +37,24 @@ class CommentsHelper {
     return apiToComment(response.getObject());
   }
 
+  /// Update comment content
+  Future<bool> updateContent(int id, String newContent) async {
+    return (await APIRequest(uri: "comments/edit", needLogin: true, args: {
+      "commentID": id.toString(),
+      "content": newContent,
+    }).exec())
+        .isOK;
+  }
+
   /// Attempt to delete a comment
   Future<bool> delete(int id) async {
     return (await APIRequest(
           uri: "comments/delete",
           needLogin: true,
           args: {"commentID": id.toString()},
-    ).exec()).code == 200;
+        ).exec())
+            .code ==
+        200;
   }
 
   /// Turn an API entry into a [Comment] object

lib/models/api_response.dart

@@ -13,4 +13,7 @@ class APIResponse {
   List<dynamic> getArray() => jsonDecode(this.content);
 
   Map<String, dynamic> getObject() => jsonDecode(this.content);
+
+  /// Check if the request is successful or not
+  bool get isOK => code == 200;
 }

lib/models/comment.dart

@@ -13,7 +13,7 @@ class Comment implements LikeElement {
   final int userID;
   final int postID;
   final int timeSent;
-  final String content;
+  String content;
   final String imageURL;
   int likes;
   bool userLike;

lib/ui/tiles/comment_tile.dart

@@ -9,12 +9,13 @@ import 'package:flutter/material.dart';
 ///
 /// @author Pierre HUBERT
 
-enum _CommentAction { DELETE }
+enum _CommentAction { DELETE, UPDATE }
 
 class CommentTile extends StatelessWidget {
   final Comment comment;
   final User user;
   final void Function(Comment) onUpdateLike;
+  final void Function(Comment) onUpdateComment;
   final void Function(Comment) onDeleteComment;
 
   const CommentTile({
@@ -22,10 +23,13 @@ class CommentTile extends StatelessWidget {
     @required this.comment,
     @required this.user,
     @required this.onUpdateLike,
+    @required this.onUpdateComment,
     @required this.onDeleteComment,
   })  : assert(comment != null),
         assert(user != null),
         assert(onUpdateLike != null),
+        assert(onUpdateComment != null),
+        assert(onDeleteComment != null),
         super(key: key);
 
   @override
@@ -46,11 +50,19 @@ class CommentTile extends StatelessWidget {
       ),
       onSelected: _selectedMenuOption,
       itemBuilder: (c) => [
+            // Update comment content
             PopupMenuItem(
               enabled: comment.isOwner,
-              child: Text("Delete"),
+              child: Text(tr("Update")),
+              value: _CommentAction.UPDATE,
+            ),
+
+            // Delete comment
+            PopupMenuItem(
+              enabled: comment.isOwner,
+              child: Text(tr("Delete")),
               value: _CommentAction.DELETE,
-            )
+            ),
           ],
     );
   }
@@ -128,6 +140,11 @@ class CommentTile extends StatelessWidget {
   /// A menu option has been selected
   void _selectedMenuOption(_CommentAction value) {
     switch (value) {
+      // Update comment content
+      case _CommentAction.UPDATE:
+        onUpdateComment(comment);
+        break;
+
       // Delete comment
       case _CommentAction.DELETE:
         onDeleteComment(comment);

lib/ui/tiles/post_tile.dart

@@ -195,6 +195,7 @@ class _PostTileState extends State<PostTile> {
             comment: widget.post.comments[num],
             user: widget.usersInfo.getUser(widget.post.comments[num].userID),
             onUpdateLike: _updateCommentLike,
+            onUpdateComment: _updateCommentContent,
             onDeleteComment: _deleteComment,
           ),
     );
@@ -366,6 +367,24 @@ class _PostTileState extends State<PostTile> {
     });
   }
 
+  /// Update comment content
+  Future<void> _updateCommentContent(Comment comment) async {
+    final newContent = await askUserString(
+      context: context,
+      title: tr("Update comment content"),
+      message: tr("New content:"),
+      defaultValue: comment.content,
+      hint: tr("New content..."),
+    );
+
+    if (!(await _commentsHelper.updateContent(comment.id, newContent)))
+      return showSimpleSnack(context, tr("Could not update comment content!"));
+
+    setState(() {
+      comment.content = newContent;
+    });
+  }
+
   /// Process the deletion of a user
   Future<void> _deleteComment(Comment comment) async {
     if (!await showConfirmDialog(

lib/utils/ui_utils.dart

@@ -68,6 +68,8 @@ void showSimpleSnack(BuildContext context, String message) {
 }
 
 /// Show an alert dialog to ask the user to enter a string
+///
+/// Returns entered string if the dialog is confirmed, null else
 Future<String> askUserString({
   @required BuildContext context,
   @required String title,