fix: floating bookmarks

- update floating bookmarks
- fix search suggestions
- fix filters

backend/apps/books/views.py

@@ -21,6 +21,7 @@ from apps.books.serializers import (
     ReadingProgressSerializer, StorageSummarySerializer,
 )
 from apps.reader.models import ReadingSettings
+from apps.books.services.ebook_metadata import subjects_from_ebook
 from apps.books.services.metadata import enrich_ebook_metadata
 
 logger = logging.getLogger(__name__)
@@ -96,7 +97,30 @@ class EBookViewSet(viewsets.ModelViewSet):
         return EBookDetailSerializer
 
     def get_queryset(self):
-        return EBook.objects.filter(user=self.request.user).select_related("reading_progress", "user")
+        qs = EBook.objects.filter(user=self.request.user).select_related("reading_progress", "user")
+        query = self.request.query_params.get("q", "").strip()
+        if query and self.action == "list":
+            qs = qs.filter(
+                Q(title__icontains=query) | Q(author__icontains=query),
+            )
+        return qs
+
+    @action(detail=False, methods=["get"])
+    def genres(self, request: Request) -> Response:
+        genre_set: set[str] = set()
+        for ebook in self.get_queryset():
+            genre_set.update(subjects_from_ebook(ebook))
+        return Response(sorted(genre_set))
+
+    @action(detail=False, methods=["get"])
+    def authors(self, request: Request) -> Response:
+        author_list = (
+            self.get_queryset()
+            .values_list("author", flat=True)
+            .distinct()
+            .order_by("author")
+        )
+        return Response([a for a in author_list if a])
 
     @action(detail=True, methods=["get", "patch"])
     def progress(self, request: Request, pk: int | None = None) -> Response: