Can send comments

lib/helpers/comments_helper.dart

@@ -1,10 +1,30 @@
+import 'package:comunic/models/api_request.dart';
 import 'package:comunic/models/comment.dart';
+import 'package:comunic/models/new_comment.dart';
 
 /// Comments helper
 ///
 /// @author Pierre HUBERT
 
 class CommentsHelper {
+  /// Send a new comment
+  ///
+  /// Returns 0 or below in case of failure, the ID of the comment else
+  Future<int> createComment(NewComment comment) async {
+    final request = APIRequest(uri: "comments/create", needLogin: true, args: {
+      "postID": comment.postID.toString(),
+      "content": comment.hasContent ? comment.content : "",
+    });
+
+    if (comment.hasImage) request.addFile("image", comment.image);
+
+    final response = await request.execWithFiles();
+
+    if (response.code != 200) return -1;
+
+    return response.getObject()["commentID"];
+  }
+
   /// Turn an API entry into a [Comment] object
   static Comment apiToComment(Map<String, dynamic> entry) {
     return Comment(

lib/models/new_comment.dart

@@ -0,0 +1,23 @@
+import 'dart:io';
+
+import 'package:meta/meta.dart';
+
+/// New comment information
+///
+/// @author Pierre HUBERT
+
+class NewComment {
+  final int postID;
+  final String content;
+  final File image;
+
+  const NewComment({
+    @required this.postID,
+    @required this.content,
+    @required this.image,
+  }) : assert(postID != null);
+
+  bool get hasContent => content != null && content.length > 0;
+
+  bool get hasImage => image != null;
+}

lib/ui/tiles/post_tile.dart

@@ -1,7 +1,9 @@
 import 'dart:io';
 
 import 'package:comunic/enums/post_kind.dart';
+import 'package:comunic/helpers/comments_helper.dart';
 import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/new_comment.dart';
 import 'package:comunic/models/post.dart';
 import 'package:comunic/models/user.dart';
 import 'package:comunic/ui/tiles/comment_tile.dart';
@@ -44,15 +46,20 @@ class PostTile extends StatefulWidget {
 
 class _PostTileState extends State<PostTile> {
   // Class members
-  TextEditingController _controller = TextEditingController();
+  TextEditingController _commentController = TextEditingController();
   File _commentImage;
+  bool _submitting = false;
 
   User get _user => widget.usersInfo.getUser(widget.post.userID);
 
-  bool get _commentValid => _controller.text.toString().length > 3;
+  bool get _commentValid => _commentController.text.toString().length > 3;
 
   bool get _hasImage => _commentImage != null;
 
+  bool get _canSubmitComment => !_submitting && (_commentValid || _hasImage);
+
+  set _sendingComment(bool sending) => setState(() => _submitting = sending);
+
   Widget _buildHeaderRow() {
     // Header row
     return Row(
@@ -211,9 +218,9 @@ class _PostTileState extends State<PostTile> {
           // Comment input
           Expanded(
             child: TextField(
-              controller: _controller,
+              controller: _commentController,
               onChanged: (s) => setState(() {}),
-              onSubmitted: _commentValid ? (s) => _submitComment() : null,
+              onSubmitted: _canSubmitComment ? (s) => _submitComment() : null,
               decoration: InputDecoration(
                   hintText: tr("New comment..."),
                   hintStyle: TextStyle(color: Colors.grey, fontSize: 12),
@@ -253,11 +260,10 @@ class _PostTileState extends State<PostTile> {
             width: 40,
             child: FlatButton(
               padding: EdgeInsets.only(),
-              onPressed:
+              onPressed: _canSubmitComment ? () => _submitComment() : null,
-                  _commentValid || _hasImage ? () => _submitComment() : null,
               child: Icon(
                 Icons.send,
-                color: _commentValid || _hasImage ? Colors.blue : Colors.grey,
+                color: _canSubmitComment ? Colors.blue : Colors.grey,
               ),
             ),
           ),
@@ -266,6 +272,14 @@ class _PostTileState extends State<PostTile> {
     );
   }
 
+  /// Clear comments submitting form
+  void clearCommentForm() {
+    setState(() {
+      _commentController.text = "";
+      _commentImage = null;
+    });
+  }
+
   /// Pick an image
   Future<void> _pickImage() async {
     // Ask the user to confirm image removal if there is already one selected
@@ -291,5 +305,22 @@ class _PostTileState extends State<PostTile> {
   }
 
   /// Submit comment entered by the user
-  Future<bool> _submitComment() async {}
+  Future<void> _submitComment() async {
+    _sendingComment = true;
+
+    final commentID = await CommentsHelper().createComment(NewComment(
+      postID: widget.post.id,
+      content: _commentController.text,
+      image: _commentImage,
+    ));
+
+    _sendingComment = false;
+
+    if (commentID < 1)
+      return showSimpleSnack(context, tr("Could not create comment!"));
+
+    clearCommentForm();
+
+    // Get and show new comment
+  }
 }