feat: add comments for gelbooru

lib/api/gelbooru/gelbooru_api.dart

@@ -42,4 +42,15 @@ abstract class GelbooruApi {
     @Query('term') String term, {
     @CancelRequest() CancelToken? cancelToken,
   });
+
+  @GET('/index.php')
+  Future<HttpResponse> getComments(
+    @Query('api_key') String? apiKey,
+    @Query('user_id') String? userId,
+    @Query('page') String page,
+    @Query('s') String s,
+    @Query('q') String q,
+    @Query('post_id') int postId, {
+    @CancelRequest() CancelToken? cancelToken,
+  });
 }

lib/boorus/gelbooru/feats/comments/comments.dart

@@ -0,0 +1,4 @@
+export 'gelbooru_comment.dart';
+export 'gelbooru_comment_dto.dart';
+export 'gelbooru_comment_provider.dart';
+export 'gelbooru_comment_repository.dart';

lib/boorus/gelbooru/feats/comments/gelbooru_comment.dart

@@ -0,0 +1,30 @@
+// Package imports:
+import 'package:equatable/equatable.dart';
+
+class GelbooruComment extends Equatable {
+  const GelbooruComment({
+    required this.id,
+    required this.postId,
+    required this.body,
+    required this.creatorId,
+    required this.creator,
+    required this.createdAt,
+  });
+
+  final int id;
+  final int postId;
+  final String body;
+  final int creatorId;
+  final String creator;
+  final DateTime createdAt;
+
+  @override
+  List<Object?> get props => [
+        id,
+        postId,
+        body,
+        creatorId,
+        createdAt,
+        creator,
+      ];
+}

lib/boorus/gelbooru/feats/comments/gelbooru_comment_dto.dart

@@ -0,0 +1,31 @@
+// Package imports:
+import 'package:xml/xml.dart' as xml;
+
+class GelbooruCommentDto {
+  final String? createdAt;
+  final String? postId;
+  final String? body;
+  final String? creator;
+  final String? id;
+  final String? creatorId;
+
+  GelbooruCommentDto({
+    this.createdAt,
+    this.postId,
+    this.body,
+    this.creator,
+    this.id,
+    this.creatorId,
+  });
+
+  factory GelbooruCommentDto.fromXml(xml.XmlElement element) {
+    return GelbooruCommentDto(
+      createdAt: element.getAttribute('created_at'),
+      postId: element.getAttribute('post_id'),
+      body: element.getAttribute('body'),
+      creator: element.getAttribute('creator'),
+      id: element.getAttribute('id'),
+      creatorId: element.getAttribute('creator_id'),
+    );
+  }
+}

lib/boorus/gelbooru/feats/comments/gelbooru_comment_provider.dart

@@ -0,0 +1,18 @@
+// Package imports:
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+// Project imports:
+import 'package:boorusama/boorus/core/feats/boorus/providers.dart';
+import 'package:boorusama/boorus/gelbooru/feats/comments/comments.dart';
+import 'package:boorusama/boorus/gelbooru/gelbooru_provider.dart';
+
+final gelbooruCommentRepoProvider = Provider<GelbooruCommentRepository>(
+  (ref) => GelbooruCommentRepositoryApi(
+    api: ref.read(gelbooruApiProvider),
+    booruConfig: ref.read(currentBooruConfigProvider),
+  ),
+);
+
+final gelbooruCommentsProvider =
+    FutureProvider.family<List<GelbooruComment>, int>((ref, postId) =>
+        ref.read(gelbooruCommentRepoProvider).getComments(postId));

lib/boorus/gelbooru/feats/comments/gelbooru_comment_repository.dart

@@ -0,0 +1,63 @@
+// Dart imports:
+import 'dart:async';
+
+// Package imports:
+import 'package:intl/intl.dart';
+import 'package:xml/xml.dart';
+
+// Project imports:
+import 'package:boorusama/api/gelbooru/gelbooru_api.dart';
+import 'package:boorusama/boorus/core/feats/boorus/boorus.dart';
+import 'package:boorusama/boorus/gelbooru/feats/comments/gelbooru_comment.dart';
+import 'package:boorusama/dart.dart';
+import 'gelbooru_comment_dto.dart';
+
+abstract interface class GelbooruCommentRepository {
+  Future<List<GelbooruComment>> getComments(int postId);
+}
+
+class GelbooruCommentRepositoryApi implements GelbooruCommentRepository {
+  GelbooruCommentRepositoryApi({
+    required this.api,
+    required this.booruConfig,
+  });
+
+  final GelbooruApi api;
+  final BooruConfig booruConfig;
+
+  @override
+  Future<List<GelbooruComment>> getComments(int postId) => api
+      .getComments(
+        booruConfig.login,
+        booruConfig.apiKey,
+        'dapi',
+        'comment',
+        'index',
+        postId,
+      )
+      .then(_parseCommentDtos)
+      .then((value) => value.map(gelboorucommentDtoToGelbooruComment).toList())
+      .catchError((e) => <GelbooruComment>[]);
+}
+
+FutureOr<List<GelbooruCommentDto>> _parseCommentDtos(value) {
+  final dtos = <GelbooruCommentDto>[];
+  final xmlDocument = XmlDocument.parse(value.data);
+  final comments = xmlDocument.findAllElements('comment');
+  for (final item in comments) {
+    dtos.add(GelbooruCommentDto.fromXml(item));
+  }
+  return dtos;
+}
+
+GelbooruComment gelboorucommentDtoToGelbooruComment(GelbooruCommentDto dto) {
+  return GelbooruComment(
+    id: int.tryParse(dto.id ?? '') ?? 0,
+    postId: int.tryParse(dto.postId ?? '') ?? 0,
+    body: dto.body ?? '',
+    creator: dto.creator ?? '',
+    creatorId: int.tryParse(dto.creatorId ?? '') ?? 0,
+    createdAt: DateFormat('yyyy-MM-dd HH:mm').tryParse(dto.createdAt ?? '') ??
+        DateTime.now(),
+  );
+}

lib/boorus/gelbooru/pages/comments/gelbooru_comment_item.dart

@@ -0,0 +1,52 @@
+// Flutter imports:
+import 'package:flutter/material.dart';
+
+// Package imports:
+import 'package:flutter_html/flutter_html.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+// Project imports:
+import 'package:boorusama/boorus/core/feats/boorus/boorus.dart';
+import 'package:boorusama/boorus/core/feats/dtext/html_converter.dart';
+import 'package:boorusama/boorus/core/widgets/comment_header.dart';
+import 'package:boorusama/boorus/gelbooru/feats/comments/comments.dart';
+import 'package:boorusama/flutter.dart';
+
+class GelbooruCommentItem extends ConsumerWidget {
+  const GelbooruCommentItem({
+    super.key,
+    required this.comment,
+  });
+
+  final GelbooruComment comment;
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final booru = ref.watch(currentBooruProvider);
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        CommentHeader(
+          authorName: comment.creator.isEmpty
+              ? comment.creatorId.toString()
+              : comment.creator,
+          authorTitleColor: context.colorScheme.primary,
+          createdAt: comment.createdAt,
+        ),
+        const SizedBox(height: 4),
+        Html(
+          style: {
+            'body': Style(
+              margin: EdgeInsets.zero,
+            ),
+          },
+          data: dtext(
+            comment.body,
+            booru: booru,
+          ),
+        )
+      ],
+    );
+  }
+}

lib/boorus/gelbooru/pages/comments/gelbooru_comment_page.dart

@@ -0,0 +1,45 @@
+// Flutter imports:
+import 'package:flutter/material.dart';
+
+// Package imports:
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+// Project imports:
+import 'package:boorusama/boorus/core/widgets/widgets.dart';
+import 'package:boorusama/boorus/gelbooru/feats/comments/comments.dart';
+import 'package:boorusama/boorus/gelbooru/pages/comments/gelbooru_comment_item.dart';
+import 'package:boorusama/foundation/i18n.dart';
+
+class GelbooruCommentPage extends ConsumerWidget {
+  const GelbooruCommentPage({
+    super.key,
+    required this.postId,
+  });
+
+  final int postId;
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final comments = ref.watch(gelbooruCommentsProvider(postId));
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('comment.comments').tr(),
+      ),
+      body: comments.when(
+        data: (comments) => comments.isNotEmpty
+            ? ListView.builder(
+                itemCount: comments.length,
+                itemBuilder: (context, index) => Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 8),
+                  child: GelbooruCommentItem(comment: comments[index]),
+                ),
+              )
+            : const NoDataBox(),
+        loading: () =>
+            const Center(child: CircularProgressIndicator.adaptive()),
+        error: (error, stackTrace) => Center(child: Text(error.toString())),
+      ),
+    );
+  }
+}

lib/boorus/gelbooru/pages/posts/gelbooru_infinite_post_list.dart

@@ -13,6 +13,7 @@ import 'package:boorusama/boorus/core/feats/settings/settings.dart';
 import 'package:boorusama/boorus/core/provider.dart';
 import 'package:boorusama/boorus/core/widgets/widgets.dart';
 import 'package:boorusama/boorus/gelbooru/router.dart';
+import 'package:boorusama/boorus/gelbooru/widgets/gelbooru_post_context_menu.dart';
 import 'package:boorusama/dart.dart';
 import 'package:boorusama/foundation/error.dart';
 import 'package:boorusama/widgets/widgets.dart';
@@ -104,7 +105,7 @@ class _DanbooruInfinitePostListState
 
         return ContextMenuRegion(
           isEnabled: !multiSelect,
-          contextMenu: GeneralPostContextMenu(
+          contextMenu: GelbooruPostContextMenu(
             hasAccount: false,
             onMultiSelect: () {
               _multiSelectController.enableMultiSelect();

lib/boorus/gelbooru/pages/posts/gelbooru_post_action_toolbar.dart

@@ -3,7 +3,9 @@ import 'package:flutter/material.dart';
 
 // Project imports:
 import 'package:boorusama/boorus/core/feats/posts/posts.dart';
+import 'package:boorusama/boorus/core/widgets/comment_post_button.dart';
 import 'package:boorusama/boorus/core/widgets/widgets.dart';
+import 'package:boorusama/boorus/gelbooru/router.dart';
 import 'package:boorusama/flutter.dart';
 
 class GelbooruPostActionToolbar extends StatelessWidget {
@@ -24,6 +26,10 @@ class GelbooruPostActionToolbar extends StatelessWidget {
         children: [
           BookmarkPostButton(post: post),
           DownloadPostButton(post: post),
+          CommentPostButton(
+            post: post,
+            onPressed: () => goToGelbooruCommentsPage(context, post.id),
+          ),
           SharePostButton(post: post),
         ],
       ),

lib/boorus/gelbooru/router.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 
 // Package imports:
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
 import 'package:scroll_to_index/scroll_to_index.dart';
 
 // Project imports:
@@ -12,6 +13,7 @@ import 'package:boorusama/boorus/core/feats/settings/settings.dart';
 import 'package:boorusama/boorus/core/widgets/widgets.dart';
 import 'package:boorusama/boorus/gelbooru/gelbooru_provider.dart';
 import 'package:boorusama/boorus/gelbooru/pages/artists/gelbooru_artist_page.dart';
+import 'package:boorusama/boorus/gelbooru/pages/comments/gelbooru_comment_page.dart';
 import 'package:boorusama/boorus/gelbooru/pages/posts.dart';
 import 'package:boorusama/boorus/gelbooru/pages/search/gelbooru_search_page.dart';
 import 'package:boorusama/flutter.dart';
@@ -57,6 +59,19 @@ void goToGelbooruArtistPage(
   ));
 }
 
+void goToGelbooruCommentsPage(
+  BuildContext context,
+  int postId,
+) {
+  showMaterialModalBottomSheet(
+    context: context,
+    duration: const Duration(milliseconds: 250),
+    builder: (context) => GelbooruProvider(
+      builder: (context) => GelbooruCommentPage(postId: postId),
+    ),
+  );
+}
+
 Widget provideArtistPageDependencies(
   WidgetRef ref, {
   required String artist,