neon: Fix note editing problems

packages/neon/lib/src/apps/notes/app.dart

@@ -1,6 +1,5 @@
 library notes;
 
-import 'dart:async';
 import 'dart:convert';
 
 import 'package:crypto/crypto.dart';

packages/neon/lib/src/apps/notes/blocs/note.dart

@@ -4,20 +4,18 @@ import 'package:neon/src/apps/notes/app.dart';
 import 'package:neon/src/apps/notes/blocs/notes.dart';
 import 'package:neon/src/neon.dart';
 import 'package:nextcloud/nextcloud.dart';
+import 'package:queue/queue.dart';
 import 'package:rx_bloc/rx_bloc.dart';
 import 'package:rxdart/rxdart.dart';
 
 part 'note.rxb.g.dart';
 
 abstract class NotesNoteBlocEvents {
-  void updateNote(
+  void updateContent(final String content);
-    final int id,
+
-    final String etag, {
+  void updateTitle(final String title);
-    final String? title,
+
-    final String? category,
+  void updateCategory(final String category);
-    final String? content,
-    final bool? favorite,
-  });
 }
 
 abstract class NotesNoteBlocStates {
@@ -27,8 +25,6 @@ abstract class NotesNoteBlocStates {
 
   BehaviorSubject<String> get category;
 
-  BehaviorSubject<String> get etag;
-
   Stream<Exception> get errors;
 }
 
@@ -41,52 +37,69 @@ class NotesNoteBloc extends $NotesNoteBloc {
     this._notesBloc,
     final NotesNote note,
   ) {
-    _$updateNoteEvent.listen((final event) {
+    _$updateContentEvent.debounceTime(const Duration(seconds: 1)).listen((final content) {
+      _wrapAction(
+        (final etag) async => _client.notes.updateNote(
+          id: id,
+          content: content,
+          ifMatch: '"$etag"',
+        ),
+      );
+    });
+
+    _$updateTitleEvent.debounceTime(const Duration(seconds: 1)).listen((final title) {
+      _wrapAction(
+        (final etag) async => _client.notes.updateNote(
+          id: id,
+          title: title,
+          ifMatch: '"$etag"',
+        ),
+      );
+    });
+
+    _$updateCategoryEvent.listen((final category) {
       _wrapAction(
-        () async {
+        (final etag) async => _client.notes.updateNote(
-          _emitNote(
+          id: id,
-            await _client.notes.updateNote(
+          category: category,
-              id: event.id,
+          ifMatch: '"$etag"',
-              title: event.title,
+        ),
-              category: event.category,
-              content: event.content,
-              favorite: event.favorite ?? false ? 1 : 0,
-              ifMatch: '"${event.etag}"',
-            ),
-          );
-        },
       );
     });
 
+    _contentSubject.add(note.content);
+    _titleSubject.add(note.title);
     _emitNote(note);
     id = note.id;
   }
 
   void _emitNote(final NotesNote note) {
-    _contentSubject.add(note.content);
-    _titleSubject.add(note.title);
     _categorySubject.add(note.category);
-    _etagSubject.add(note.etag);
+    _etag = note.etag;
   }
 
-  void _wrapAction(final Future Function() call) {
+  void _wrapAction(final Future<NotesNote> Function(String etag) call) {
-    final stream = _requestManager.wrapWithoutCache(call).asBroadcastStream();
+    unawaited(
-    stream.whereError().listen(_errorsStreamController.add);
+      _updateQueue.add(() async {
-    stream.whereSuccess().listen((final _) async {
+        final stream = _requestManager.wrapWithoutCache(() async => _emitNote(await call(_etag))).asBroadcastStream();
-      _notesBloc.refresh();
+        stream.whereError().listen(_errorsStreamController.add);
-    });
+        stream.whereSuccess().listen((final _) => _notesBloc.refresh());
+        await stream.last;
+      }),
+    );
   }
 
   final NotesAppSpecificOptions options;
   final RequestManager _requestManager;
   final NextcloudClient _client;
   final NotesBloc _notesBloc;
+  final _updateQueue = Queue();
 
   late final int id;
+  late String _etag;
   final _contentSubject = BehaviorSubject<String>();
   final _titleSubject = BehaviorSubject<String>();
   final _categorySubject = BehaviorSubject<String>();
-  final _etagSubject = BehaviorSubject<String>();
   final _errorsStreamController = StreamController<Exception>();
 
   @override
@@ -94,7 +107,6 @@ class NotesNoteBloc extends $NotesNoteBloc {
     unawaited(_contentSubject.close());
     unawaited(_titleSubject.close());
     unawaited(_categorySubject.close());
-    unawaited(_etagSubject.close());
     unawaited(_errorsStreamController.close());
     super.dispose();
   }
@@ -110,7 +122,4 @@ class NotesNoteBloc extends $NotesNoteBloc {
 
   @override
   BehaviorSubject<String> _mapToCategoryState() => _categorySubject;
-
-  @override
-  BehaviorSubject<String> _mapToEtagState() => _etagSubject;
 }

packages/neon/lib/src/apps/notes/blocs/note.rxb.g.dart

@@ -19,8 +19,14 @@ abstract class $NotesNoteBloc extends RxBlocBase
     implements NotesNoteBlocEvents, NotesNoteBlocStates, NotesNoteBlocType {
   final _compositeSubscription = CompositeSubscription();
 
-  /// Тhe [Subject] where events sink to by calling [updateNote]
+  /// Тhe [Subject] where events sink to by calling [updateContent]
-  final _$updateNoteEvent = PublishSubject<_UpdateNoteEventArgs>();
+  final _$updateContentEvent = PublishSubject<String>();
+
+  /// Тhe [Subject] where events sink to by calling [updateTitle]
+  final _$updateTitleEvent = PublishSubject<String>();
+
+  /// Тhe [Subject] where events sink to by calling [updateCategory]
+  final _$updateCategoryEvent = PublishSubject<String>();
 
   /// The state of [content] implemented in [_mapToContentState]
   late final BehaviorSubject<String> _contentState = _mapToContentState();
@@ -31,29 +37,17 @@ abstract class $NotesNoteBloc extends RxBlocBase
   /// The state of [category] implemented in [_mapToCategoryState]
   late final BehaviorSubject<String> _categoryState = _mapToCategoryState();
 
-  /// The state of [etag] implemented in [_mapToEtagState]
-  late final BehaviorSubject<String> _etagState = _mapToEtagState();
-
   /// The state of [errors] implemented in [_mapToErrorsState]
   late final Stream<Exception> _errorsState = _mapToErrorsState();
 
   @override
-  void updateNote(
+  void updateContent(String content) => _$updateContentEvent.add(content);
-    int id,
+
-    String etag, {
+  @override
-    String? title,
+  void updateTitle(String title) => _$updateTitleEvent.add(title);
-    String? category,
+
-    String? content,
+  @override
-    bool? favorite,
+  void updateCategory(String category) => _$updateCategoryEvent.add(category);
-  }) =>
-      _$updateNoteEvent.add(_UpdateNoteEventArgs(
-        id,
-        etag,
-        title: title,
-        category: category,
-        content: content,
-        favorite: favorite,
-      ));
 
   @override
   BehaviorSubject<String> get content => _contentState;
@@ -64,9 +58,6 @@ abstract class $NotesNoteBloc extends RxBlocBase
   @override
   BehaviorSubject<String> get category => _categoryState;
 
-  @override
-  BehaviorSubject<String> get etag => _etagState;
-
   @override
   Stream<Exception> get errors => _errorsState;
 
@@ -76,8 +67,6 @@ abstract class $NotesNoteBloc extends RxBlocBase
 
   BehaviorSubject<String> _mapToCategoryState();
 
-  BehaviorSubject<String> _mapToEtagState();
-
   Stream<Exception> _mapToErrorsState();
 
   @override
@@ -88,33 +77,10 @@ abstract class $NotesNoteBloc extends RxBlocBase
 
   @override
   void dispose() {
-    _$updateNoteEvent.close();
+    _$updateContentEvent.close();
+    _$updateTitleEvent.close();
+    _$updateCategoryEvent.close();
     _compositeSubscription.dispose();
     super.dispose();
   }
 }
-
-/// Helps providing the arguments in the [Subject.add] for
-/// [NotesNoteBlocEvents.updateNote] event
-class _UpdateNoteEventArgs {
-  const _UpdateNoteEventArgs(
-    this.id,
-    this.etag, {
-    this.title,
-    this.category,
-    this.content,
-    this.favorite,
-  });
-
-  final int id;
-
-  final String etag;
-
-  final String? title;
-
-  final String? category;
-
-  final String? content;
-
-  final bool? favorite;
-}

packages/neon/lib/src/apps/notes/pages/note.dart

@@ -19,7 +19,6 @@ class _NotesNotePageState extends State<NotesNotePage> {
   late final _titleController = TextEditingController();
   final _contentFocusNode = FocusNode();
   final _titleFocusNode = FocusNode();
-  final _updateController = StreamController();
   bool _showEditor = false;
 
   void _focusEditor() {
@@ -27,24 +26,6 @@ class _NotesNotePageState extends State<NotesNotePage> {
     _contentController.selection = TextSelection.collapsed(offset: _contentController.text.length);
   }
 
-  Future _update({
-    final String? category,
-  }) async {
-    final updatedTitle = await widget.bloc.title.first != _titleController.text ? _titleController.text : null;
-    final updatedCategory = category != null && await widget.bloc.category.first != category ? category : null;
-    final updatedContent = await widget.bloc.content.first != _contentController.text ? _contentController.text : null;
-
-    if (updatedTitle != null || updatedCategory != null || updatedContent != null) {
-      widget.bloc.updateNote(
-        widget.bloc.id,
-        await widget.bloc.etag.first,
-        title: updatedTitle,
-        category: updatedCategory,
-        content: updatedContent,
-      );
-    }
-  }
-
   @override
   void initState() {
     super.initState();
@@ -71,9 +52,16 @@ class _NotesNotePageState extends State<NotesNotePage> {
       }
     });
 
-    _contentController.addListener(() => _updateController.add(null));
+    _contentController.addListener(() async {
-    _titleController.addListener(() => _updateController.add(null));
+      if (await widget.bloc.content.first != _contentController.text) {
-    _updateController.stream.debounceTime(const Duration(seconds: 1)).listen((final _) async => _update());
+        widget.bloc.updateContent(_contentController.text);
+      }
+    });
+    _titleController.addListener(() async {
+      if (await widget.bloc.title.first != _titleController.text) {
+        widget.bloc.updateTitle(_titleController.text);
+      }
+    });
 
     WidgetsBinding.instance.addPostFrameCallback((final _) async {
       if (Provider.of<NeonPlatform>(context, listen: false).canUseWakelock) {
@@ -89,27 +77,16 @@ class _NotesNotePageState extends State<NotesNotePage> {
     });
   }
 
-  @override
-  void dispose() {
-    unawaited(_updateController.close());
-    super.dispose();
-  }
-
   @override
   Widget build(final BuildContext context) => WillPopScope(
         onWillPop: () async {
-          await _update();
-
-          if (!mounted) {
-            return true;
-          }
           if (Provider.of<NeonPlatform>(context, listen: false).canUseWakelock) {
             await Wakelock.disable();
           }
           return true;
         },
         child: Scaffold(
-          resizeToAvoidBottomInset: false,
+          resizeToAvoidBottomInset: true,
           appBar: AppBar(
             titleSpacing: 0,
             title: TextField(
@@ -159,9 +136,7 @@ class _NotesNotePageState extends State<NotesNotePage> {
                         ),
                       );
                       if (result != null) {
-                        await _update(
+                        widget.bloc.updateCategory(result);
-                          category: result,
-                        );
                       }
                     },
                     icon: Icon(