fix: floating bookmarks

- update floating bookmarks
- fix search suggestions
- fix filters

backend/apps/books/serializers.py

@@ -3,6 +3,7 @@ from rest_framework import serializers
 import logging
 
 from apps.books.models import Book, BookChapter, EBook, ReadingProgress, ReadingStatus, DownloadRecord
+from apps.books.services.ebook_metadata import subjects_from_ebook
 from apps.books.services.metadata import enrich_ebook_metadata
 from apps.books.services.process_ebook import apply_processing_to_ebook
 from apps.reader.models import ReadingSettings
@@ -71,14 +72,18 @@ class EBookListSerializer(serializers.ModelSerializer):
     format = serializers.CharField(read_only=True)
     progress = serializers.SerializerMethodField()
     started = serializers.SerializerMethodField()
+    subjects = serializers.SerializerMethodField()
 
     class Meta:
         model = EBook
         fields = [
             "id", "title", "author", "filename", "format", "page_count", "file_size",
-            "cover_image", "created_at", "progress", "started",
+            "cover_image", "created_at", "progress", "started", "subjects",
         ]
 
+    def get_subjects(self, obj: EBook) -> list[str]:
+        return subjects_from_ebook(obj)
+
     def get_progress(self, obj):
         try:
             return obj.reading_progress.current_position

backend/apps/books/services/ebook_metadata.py

@@ -0,0 +1,8 @@
+from __future__ import annotations
+
+from apps.books.models import EBook
+
+
+def subjects_from_ebook(ebook: EBook) -> list[str]:
+    ol = (ebook.metadata_json or {}).get("openlibrary") or {}
+    return [s.strip() for s in (ol.get("subjects") or []) if isinstance(s, str) and s.strip()]

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: