Add new API

lib/api/client.dart

@@ -248,6 +248,12 @@ abstract class _EHApi {
   Future<ApiResult<GMetaInfos>> _getGalleriesMeta(@Path("gids") String gids,
       // ignore: unused_element
       {@CancelRequest() CancelToken? cancel});
+  @GET('/gallery/thumbnail/{gids}')
+  // ignore: unused_element
+  Future<ApiResult<GalleryThumbnails>> _getGalleriesThumbnail(
+      @Path("gids") String gids,
+      // ignore: unused_element
+      {@CancelRequest() CancelToken? cancel});
   @GET('/gallery/list')
   Future<ApiResult<List<GMeta>>> listGalleries(
       {@Query("all") bool? all,
@@ -455,6 +461,11 @@ class EHApi extends __EHApi {
     return _getGalleriesMeta(gids.join(","), cancel: cancel);
   }
 
+  Future<ApiResult<GalleryThumbnails>> getGalleriesThumbnail(List<int> gids,
+      {CancelToken? cancel}) {
+    return _getGalleriesThumbnail(gids.join(","), cancel: cancel);
+  }
+
   Future<ApiResult<Tags>> getTags(List<int> ids, {CancelToken? cancel}) {
     return _getTags(ids.join(","), cancel: cancel);
   }

lib/api/client.g.dart

@@ -1174,6 +1174,47 @@ class __EHApi implements _EHApi {
     return _value;
   }
 
+  @override
+  Future<ApiResult<GalleryThumbnails>> _getGalleriesThumbnail(
+    String gids, {
+    CancelToken? cancel,
+  }) async {
+    final _extra = <String, dynamic>{};
+    final queryParameters = <String, dynamic>{};
+    queryParameters.removeWhere((k, v) => v == null);
+    final _headers = <String, dynamic>{};
+    const Map<String, dynamic>? _data = null;
+    final _options = _setStreamType<ApiResult<GalleryThumbnails>>(Options(
+      method: 'GET',
+      headers: _headers,
+      extra: _extra,
+    )
+        .compose(
+          _dio.options,
+          '/gallery/thumbnail/${gids}',
+          queryParameters: queryParameters,
+          data: _data,
+          cancelToken: cancel,
+        )
+        .copyWith(
+            baseUrl: _combineBaseUrls(
+          _dio.options.baseUrl,
+          baseUrl,
+        )));
+    final _result = await _dio.fetch<Map<String, dynamic>>(_options);
+    late ApiResult<GalleryThumbnails> _value;
+    try {
+      _value = ApiResult<GalleryThumbnails>.fromJson(
+        _result.data!,
+        (json) => GalleryThumbnails.fromJson(json as Map<String, dynamic>),
+      );
+    } on Object catch (e, s) {
+      errorLogger?.logError(e, s, _options);
+      rethrow;
+    }
+    return _value;
+  }
+
   @override
   Future<ApiResult<List<GMeta>>> listGalleries({
     bool? all,

lib/api/gallery.dart

@@ -237,3 +237,18 @@ class GMetaSearchInfo {
           : titleJpn
       : title;
 }
+
+class GalleryThumbnails {
+  const GalleryThumbnails({
+    required this.thumbnails,
+  });
+  final Map<int, ApiResult<ExtendedPMeta>> thumbnails;
+  factory GalleryThumbnails.fromJson(Map<String, dynamic> json) =>
+      GalleryThumbnails(
+          thumbnails: json.map((key, value) => MapEntry(
+              int.parse(key),
+              ApiResult<ExtendedPMeta>.fromJson(
+                  value as Map<String, dynamic>,
+                  (json) =>
+                      ExtendedPMeta.fromJson(json as Map<String, dynamic>)))));
+}