превью и улучшение seo

.gitignore

@@ -1,4 +1,5 @@
 .env
+library_service/static/books/
 *.log
 
 # Byte-compiled / optimized / DLL files

library_service/main.py

@@ -184,6 +184,7 @@ if __name__ == "__main__":
         "library_service.main:app",
         host="0.0.0.0",
         port=8000,
+        proxy_headers=True,
         forwarded_allow_ips="*",
         log_config=LOGGING_CONFIG,
         access_log=False,

library_service/models/db/book.py

@@ -1,6 +1,7 @@
 """Модуль DB-моделей книг"""
 
 from typing import TYPE_CHECKING, List
+from uuid import UUID
 
 from pgvector.sqlalchemy import Vector
 from sqlalchemy import Column, String
@@ -26,7 +27,8 @@ class Book(BookBase, table=True):
         sa_column=Column(String, nullable=False, default="active"),
         description="Статус",
     )
-    embedding: list[float] | None = Field(sa_column=Column(Vector(1024)))
+    embedding: list[float] | None = Field(sa_column=Column(Vector(1024)), description="Эмбэдинг для векторного поиска")
+    preview_id: UUID | None = Field(default=None, unique=True, index=True, description="UUID файла изображения")
     authors: List["Author"] = Relationship(
         back_populates="books", link_model=AuthorBookLink
     )

library_service/models/dto/book.py

@@ -46,6 +46,7 @@ class BookRead(BookBase):
 
     id: int = Field(description="Идентификатор")
     status: BookStatus = Field(description="Статус")
+    preview_urls: dict[str, str] = Field(default_factory=dict, description="URL изображений")
 
 
 class BookList(SQLModel):

library_service/models/dto/misc.py

@@ -39,6 +39,7 @@ class BookWithAuthors(SQLModel):
     description: str = Field(description="Описание")
     page_count: int = Field(description="Количество страниц")
     status: BookStatus | None = Field(None, description="Статус")
+    preview_urls: dict[str, str] = Field(default_factory=dict, description="URL изображений")
     authors: List[AuthorRead] = Field(
         default_factory=list, description="Список авторов"
     )
@@ -52,6 +53,7 @@ class BookWithGenres(SQLModel):
     description: str = Field(description="Описание")
     page_count: int = Field(description="Количество страниц")
     status: BookStatus | None = Field(None, description="Статус")
+    preview_urls: dict[str, str] | None = Field(default=None, description="URL изображений")
     genres: List[GenreRead] = Field(default_factory=list, description="Список жанров")
 
 
@@ -63,6 +65,7 @@ class BookWithAuthorsAndGenres(SQLModel):
     description: str = Field(description="Описание")
     page_count: int = Field(description="Количество страниц")
     status: BookStatus | None = Field(None, description="Статус")
+    preview_urls: dict[str, str] | None = Field(default=None, description="URL изображений")
     authors: List[AuthorRead] = Field(
         default_factory=list, description="Список авторов"
     )

library_service/routers/books.py

@@ -1,4 +1,7 @@
 """Модуль работы с книгами"""
+from library_service.services import transcode_image
+import shutil
+from uuid import uuid4
 
 from pydantic import Field
 from typing_extensions import Annotated
@@ -10,12 +13,12 @@ from sqlalchemy import text, case, distinct
 from datetime import datetime, timezone
 from typing import List
 
-from fastapi import APIRouter, Depends, HTTPException, Path, Query, status
+from fastapi import APIRouter, Depends, HTTPException, Path, Query, status, UploadFile, File
 from ollama import Client
 from sqlmodel import Session, select, col, func
 
 from library_service.auth import RequireStaff
-from library_service.settings import get_session, OLLAMA_URL
+from library_service.settings import get_session, OLLAMA_URL, BOOKS_PREVIEW_DIR
 from library_service.models.enums import BookStatus
 from library_service.models.db import (
     Author,
@@ -47,9 +50,9 @@ def close_active_loan(session: Session, book_id: int) -> None:
     """Закрывает активную выдачу книги при изменении статуса"""
     active_loan = session.exec(
         select(BookUserLink)
-        .where(BookUserLink.book_id == book_id)
+        .where(BookUserLink.book_id == book_id) # ty: ignore
-        .where(BookUserLink.returned_at == None)  # noqa: E711
+        .where(BookUserLink.returned_at == None) # ty: ignore
-    ).first()
+    ).first() # ty: ignore
 
     if active_loan:
         active_loan.returned_at = datetime.now(timezone.utc)
@@ -72,19 +75,19 @@ def filter_books(
     size: int = Query(20, gt=0, le=100),
 ):
     statement = select(Book).options(
-        selectinload(Book.authors), selectinload(Book.genres), defer(Book.embedding)
+        selectinload(Book.authors), selectinload(Book.genres), defer(Book.embedding) # ty: ignore
     )
 
     if min_page_count:
-        statement = statement.where(Book.page_count >= min_page_count)
+        statement = statement.where(Book.page_count >= min_page_count) # ty: ignore
     if max_page_count:
-        statement = statement.where(Book.page_count <= max_page_count)
+        statement = statement.where(Book.page_count <= max_page_count) # ty: ignore
 
     if author_ids:
         statement = statement.where(
             exists().where(
-                AuthorBookLink.book_id == Book.id,
+                AuthorBookLink.book_id == Book.id, # ty: ignore
-                AuthorBookLink.author_id.in_(author_ids),
+                AuthorBookLink.author_id.in_(author_ids), # ty: ignore
             )
         )
 
@@ -92,7 +95,7 @@ def filter_books(
         for genre_id in genre_ids:
             statement = statement.where(
                 exists().where(
-                    GenreBookLink.book_id == Book.id, GenreBookLink.genre_id == genre_id
+                    GenreBookLink.book_id == Book.id, GenreBookLink.genre_id == genre_id # ty: ignore
                 )
             )
 
@@ -101,13 +104,13 @@ def filter_books(
 
     if q:
         emb = ollama_client.embeddings(model="mxbai-embed-large", prompt=q)["embedding"]
-        distance_col = Book.embedding.cosine_distance(emb)
+        distance_col = Book.embedding.cosine_distance(emb) # ty: ignore
-        statement = statement.where(Book.embedding.is_not(None))
+        statement = statement.where(Book.embedding.is_not(None)) # ty: ignore
 
-        keyword_match = case((Book.title.ilike(f"%{q}%"), 0), else_=1)
+        keyword_match = case((Book.title.ilike(f"%{q}%"), 0), else_=1) # ty: ignore
         statement = statement.order_by(keyword_match, distance_col)
     else:
-        statement = statement.order_by(Book.id)
+        statement = statement.order_by(Book.id) # ty: ignore
 
     offset = (page - 1) * size
     statement = statement.offset(offset).limit(size)
@@ -131,10 +134,18 @@ def create_book(
     full_text = book.title + " " + book.description
     emb = ollama_client.embeddings(model="mxbai-embed-large", prompt=full_text)
     db_book = Book(**book.model_dump(), embedding=emb["embedding"])
+
     session.add(db_book)
     session.commit()
     session.refresh(db_book)
-    return BookRead(**db_book.model_dump(exclude={"embedding"}))
+
+    book_data = db_book.model_dump(exclude={"embedding", "preview_id"})
+    book_data["preview_urls"] = {
+        "png": f"/static/books/{db_book.preview_id}.png",
+        "jpeg": f"/static/books/{db_book.preview_id}.jpg",
+        "webp": f"/static/books/{db_book.preview_id}.webp",
+    } if db_book.preview_id else {}
+    return BookRead(**book_data)
 
 
 @router.get(
@@ -145,9 +156,20 @@ def create_book(
 )
 def read_books(session: Session = Depends(get_session)):
     """Возвращает список всех книг"""
-    books = session.exec(select(Book)).all()
+    books = session.exec(select(Book)).all() # ty: ignore
+
+    books_data = []
+    for book in books:
+        book_data = book.model_dump(exclude={"embedding", "preview_id"})
+        book_data["preview_urls"] = {
+            "png": f"/static/books/{book.preview_id}.png",
+            "jpeg": f"/static/books/{book.preview_id}.jpg",
+            "webp": f"/static/books/{book.preview_id}.webp",
+        } if book.preview_id else {}
+        books_data.append(book_data)
+
     return BookList(
-        books=[BookRead(**book.model_dump(exclude={"embedding"})) for book in books],
+        books=[BookRead(**book_data) for book_data in books_data],
         total=len(books),
     )
 
@@ -170,18 +192,23 @@ def get_book(
         )
 
     authors = session.scalars(
-        select(Author).join(AuthorBookLink).where(AuthorBookLink.book_id == book_id)
+        select(Author).join(AuthorBookLink).where(AuthorBookLink.book_id == book_id) # ty: ignore
     ).all()
 
     author_reads = [AuthorRead(**author.model_dump()) for author in authors]
 
     genres = session.scalars(
-        select(Genre).join(GenreBookLink).where(GenreBookLink.book_id == book_id)
+        select(Genre).join(GenreBookLink).where(GenreBookLink.book_id == book_id) # ty: ignore
     ).all()
 
     genre_reads = [GenreRead(**genre.model_dump()) for genre in genres]
 
-    book_data = book.model_dump(exclude={"embedding"})
+    book_data = book.model_dump(exclude={"embedding", "preview_id"})
+    book_data["preview_urls"] = {
+        "png": f"/static/books/{book.preview_id}.png",
+        "jpeg": f"/static/books/{book.preview_id}.jpg",
+        "webp": f"/static/books/{book.preview_id}.webp",
+    } if book.preview_id else {}
     book_data["authors"] = author_reads
     book_data["genres"] = genre_reads
 
@@ -233,11 +260,21 @@ def update_book(
         emb = ollama_client.embeddings(model="mxbai-embed-large", prompt=full_text)
         db_book.embedding = emb["embedding"]
 
+    if book_update.page_count is not None:
+        db_book.page_count = book_update.page_count
+
     session.add(db_book)
     session.commit()
     session.refresh(db_book)
 
-    return BookRead(**db_book.model_dump(exclude={"embedding"}))
+    book_data = db_book.model_dump(exclude={"embedding", "preview_id"})
+    book_data["preview_urls"] = {
+        "png": f"/static/books/{db_book.preview_id}.png",
+        "jpeg": f"/static/books/{db_book.preview_id}.jpg",
+        "webp": f"/static/books/{db_book.preview_id}.webp",
+    } if db_book.preview_id else {}
+
+    return BookRead(**book_data)
 
 
 @router.delete(
@@ -267,3 +304,69 @@ def delete_book(
     session.delete(book)
     session.commit()
     return book_read
+
+@router.post("/{book_id}/preview")
+async def upload_book_preview(
+    current_user: RequireStaff,
+    file: UploadFile = File(...),
+    book_id: int = Path(..., gt=0),
+    session: Session = Depends(get_session)
+):
+    if not (file.content_type or "").startswith("image/"):
+        raise HTTPException(status.HTTP_415_UNSUPPORTED_MEDIA_TYPE, "Image required")
+
+    if (file.size or 0) > 32 * 1024 * 1024:
+        raise HTTPException(status.HTTP_413_REQUEST_ENTITY_TOO_LARGE, "File larger than 10 MB")
+
+    file_uuid= uuid4()
+    tmp_path = BOOKS_PREVIEW_DIR / f"{file_uuid}.upload"
+
+    with open(tmp_path, "wb") as f:
+        shutil.copyfileobj(file.file, f)
+
+    book = session.get(Book, book_id)
+    if not book:
+        tmp_path.unlink()
+        raise HTTPException(status.HTTP_404_NOT_FOUND, "Book not found")
+
+    transcode_image(tmp_path)
+    tmp_path.unlink()
+
+    if book.preview_id:
+        for path in BOOKS_PREVIEW_DIR.glob(f"{book.preview_id}.*"):
+            if path.exists():
+                path.unlink(missing_ok=True)
+
+    book.preview_id = file_uuid
+    session.add(book)
+    session.commit()
+
+    return {
+            "preview": {
+                "png": f"/static/books/{file_uuid}.png",
+                "jpeg": f"/static/books/{file_uuid}.jpg",
+                "webp": f"/static/books/{file_uuid}.webp",
+            }
+        }
+
+
+@router.delete("/{book_id}/preview")
+async def remove_book_preview(
+    current_user: RequireStaff,
+    book_id: int = Path(..., gt=0),
+    session: Session = Depends(get_session)
+):
+    book = session.get(Book, book_id)
+    if not book:
+        raise HTTPException(status.HTTP_404_NOT_FOUND, "Book not found")
+
+    if book.preview_id:
+        for path in BOOKS_PREVIEW_DIR.glob(f"{book.preview_id}.*"):
+            if path.exists():
+                path.unlink(missing_ok=True)
+
+    book.preview_id = None
+    session.add(book)
+    session.commit()
+
+    return {"preview_urls": []}

library_service/routers/misc.py

@@ -40,109 +40,110 @@ def get_info(app) -> Dict:
 @router.get("/", include_in_schema=False)
 async def root(request: Request, app=Depends(lambda: get_app())):
     """Рендерит главную страницу"""
-    return templates.TemplateResponse(request, "index.html", get_info(app) | {"title": "LiB - Библиотека"})
+    return templates.TemplateResponse(request, "index.html", get_info(app) | {"request": request, "title": "LiB - Библиотека"})
 
 
 @router.get("/unknown", include_in_schema=False)
 async def unknown(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу 404 ошибки"""
-    return templates.TemplateResponse(request, "unknown.html", get_info(app) | {"title": "LiB - Страница не найдена"})
+    return templates.TemplateResponse(request, "unknown.html", get_info(app) | {"request": request, "title": "LiB - Страница не найдена"})
 
 
 @router.get("/genre/create", include_in_schema=False)
 async def create_genre(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу создания жанра"""
-    return templates.TemplateResponse(request, "create_genre.html", get_info(app) | {"title": "LiB - Создать жанр"})
+    return templates.TemplateResponse(request, "create_genre.html", get_info(app) | {"request": request, "title": "LiB - Создать жанр"})
 
 
 @router.get("/genre/{genre_id}/edit", include_in_schema=False)
 async def edit_genre(request: Request, genre_id: int, app=Depends(lambda: get_app())):
     """Рендерит страницу редактирования жанра"""
-    return templates.TemplateResponse(request, "edit_genre.html", get_info(app) | {"id": genre_id} | {"id": genre_id, "title": "LiB - Редактировать жанр"})
+    return templates.TemplateResponse(request, "edit_genre.html", get_info(app) | {"request": request, "title": "LiB - Редактировать жанр", "id": genre_id})
 
 
 @router.get("/authors", include_in_schema=False)
 async def authors(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу списка авторов"""
-    return templates.TemplateResponse(request, "authors.html", get_info(app) | {"title": "LiB - Авторы"})
+    return templates.TemplateResponse(request, "authors.html", get_info(app) | {"request": request, "title": "LiB - Авторы"})
 
 
 @router.get("/author/create", include_in_schema=False)
 async def create_author(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу создания автора"""
-    return templates.TemplateResponse(request, "create_author.html", get_info(app) | {"title": "LiB - Создать автора"})
+    return templates.TemplateResponse(request, "create_author.html", get_info(app) | {"request": request, "title": "LiB - Создать автора"})
 
 
 @router.get("/author/{author_id}/edit", include_in_schema=False)
 async def edit_author(request: Request, author_id: int, app=Depends(lambda: get_app())):
     """Рендерит страницу редактирования автора"""
-    return templates.TemplateResponse(request, "edit_author.html", get_info(app) | {"id": author_id, "title": "LiB - Редактировать автора"})
+    return templates.TemplateResponse(request, "edit_author.html", get_info(app) | {"request": request, "title": "LiB - Редактировать автора", "id": author_id})
 
 
 @router.get("/author/{author_id}", include_in_schema=False)
 async def author(request: Request, author_id: int, app=Depends(lambda: get_app())):
     """Рендерит страницу просмотра автора"""
-    return templates.TemplateResponse(request, "author.html", get_info(app) | {"id": author_id, "title": "LiB - Автор"})
+    return templates.TemplateResponse(request, "author.html", get_info(app) | {"request": request, "title": "LiB - Автор", "id": author_id})
 
 
 @router.get("/books", include_in_schema=False)
 async def books(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу списка книг"""
-    return templates.TemplateResponse(request, "books.html", get_info(app) | {"title": "LiB - Книги"})
+    return templates.TemplateResponse(request, "books.html", get_info(app) | {"request": request, "title": "LiB - Книги"})
 
 
 @router.get("/book/create", include_in_schema=False)
 async def create_book(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу создания книги"""
-    return templates.TemplateResponse(request, "create_book.html", get_info(app) | {"title": "LiB - Создать книгу"})
+    return templates.TemplateResponse(request, "create_book.html", get_info(app) | {"request": request, "title": "LiB - Создать книгу"})
 
 
 @router.get("/book/{book_id}/edit", include_in_schema=False)
 async def edit_book(request: Request, book_id: int, app=Depends(lambda: get_app())):
     """Рендерит страницу редактирования книги"""
-    return templates.TemplateResponse(request, "edit_book.html", get_info(app) | {"id": book_id, "title": "LiB - Редактировать книгу"})
+    return templates.TemplateResponse(request, "edit_book.html", get_info(app) | {"request": request, "title": "LiB - Редактировать книгу", "id": book_id})
 
 
 @router.get("/book/{book_id}", include_in_schema=False)
-async def book(request: Request, book_id: int, app=Depends(lambda: get_app())):
+async def book(request: Request, book_id: int, app=Depends(lambda: get_app()), session=Depends(get_session)):
     """Рендерит страницу просмотра книги"""
-    return templates.TemplateResponse(request, "book.html", get_info(app) | {"id": book_id, "title": "LiB - Книга"})
+    book = session.get(Book, book_id)
+    return templates.TemplateResponse(request, "book.html", get_info(app) | {"request": request, "title": "LiB - Книга", "id": book_id, "img": book.preview_id})
 
 
 @router.get("/auth", include_in_schema=False)
 async def auth(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу авторизации"""
-    return templates.TemplateResponse(request, "auth.html", get_info(app) | {"title": "LiB - Авторизация"})
+    return templates.TemplateResponse(request, "auth.html", get_info(app) | {"request": request, "title": "LiB - Авторизация"})
 
 
 @router.get("/2fa", include_in_schema=False)
 async def set2fa(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу установки двухфакторной аутентификации"""
-    return templates.TemplateResponse(request, "2fa.html", get_info(app) | {"title": "LiB - Двухфакторная аутентификация"})
+    return templates.TemplateResponse(request, "2fa.html", get_info(app) | {"request": request, "title": "LiB - Двухфакторная аутентификация"})
 
 
 @router.get("/profile", include_in_schema=False)
 async def profile(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу профиля пользователя"""
-    return templates.TemplateResponse(request, "profile.html", get_info(app) | {"title": "LiB - Профиль"})
+    return templates.TemplateResponse(request, "profile.html", get_info(app) | {"request": request, "title": "LiB - Профиль"})
 
 
 @router.get("/users", include_in_schema=False)
 async def users(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу управления пользователями"""
-    return templates.TemplateResponse(request, "users.html", get_info(app) | {"title": "LiB - Пользователи"})
+    return templates.TemplateResponse(request, "users.html", get_info(app) | {"request": request, "title": "LiB - Пользователи"})
 
 
 @router.get("/my-books", include_in_schema=False)
 async def my_books(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу моих книг пользователя"""
-    return templates.TemplateResponse(request, "my_books.html", get_info(app) | {"title": "LiB - Мои книги"})
+    return templates.TemplateResponse(request, "my_books.html", get_info(app) | {"request": request, "title": "LiB - Мои книги"})
 
 
 @router.get("/analytics", include_in_schema=False)
 async def analytics(request: Request, app=Depends(lambda: get_app())):
     """Рендерит страницу аналитики выдач"""
-    return templates.TemplateResponse(request, "analytics.html", get_info(app) | {"title": "LiB - Аналитика"})
+    return templates.TemplateResponse(request, "analytics.html", get_info(app) | {"request": request, "title": "LiB - Аналитика"})
 
 
 @router.get("/favicon.ico", include_in_schema=False)
@@ -181,6 +182,7 @@ async def api_info(app=Depends(lambda: get_app())):
     description="Возвращает схему базы данных с описаниями полей",
 )
 async def api_schema():
+    """Возвращает информацию для создания er-диаграммы"""
     return generator.generate()
 
 
@@ -189,7 +191,7 @@ async def api_schema():
     summary="Статистика сервиса",
     description="Возвращает статистическую информацию о системе",
 )
-async def api_stats(session: Session = Depends(get_session)):
+async def api_stats(session=Depends(get_session)):
     """Возвращает статистику системы"""
     authors = select(func.count()).select_from(Author)
     books = select(func.count()).select_from(Book)

library_service/services/__init__.py

@@ -13,6 +13,7 @@ from .captcha import (
     prng,
 )
 from .describe_er import SchemaGenerator
+from .image_processing import transcode_image
 
 __all__ = [
     "limiter",
@@ -28,4 +29,5 @@ __all__ = [
     "REDEEM_TTL",
     "prng",
     "SchemaGenerator",
+    "transcode_image",
 ]

library_service/services/image_processing.py

@@ -0,0 +1,81 @@
+from pathlib import Path
+from PIL import Image
+
+
+TARGET_RATIO = 5 / 7
+
+
+def crop_image(img: Image.Image, target_ratio: float = TARGET_RATIO) -> Image.Image:
+    w, h = img.size
+    current_ratio = w / h
+
+    if current_ratio > target_ratio:
+        new_w = int(h * target_ratio)
+        left = (w - new_w) // 2
+        right = left + new_w
+        top = 0
+        bottom = h
+    else:
+        new_h = int(w / target_ratio)
+        top = (h - new_h) // 2
+        bottom = top + new_h
+        left = 0
+        right = w
+
+    return img.crop((left, top, right, bottom))
+
+
+def transcode_image(
+    src_path: str | Path,
+    *,
+    jpeg_quality: int = 85,
+    webp_quality: int = 80,
+    webp_lossless: bool = False,
+    resize_to: tuple[int, int] | None = None,
+):
+    src_path = Path(src_path)
+
+    if not src_path.exists():
+        raise FileNotFoundError(src_path)
+
+    stem = src_path.stem
+    folder = src_path.parent
+
+    img = Image.open(src_path).convert("RGBA")
+    img = crop_image(img)
+
+    if resize_to:
+        img = img.resize(resize_to, Image.LANCZOS)
+
+    png_path = folder / f"{stem}.png"
+    img.save(
+        png_path,
+        format="PNG",
+        optimize=True,
+        interlace=1,
+    )
+
+    jpg_path = folder / f"{stem}.jpg"
+    img.convert("RGB").save(
+        jpg_path,
+        format="JPEG",
+        quality=jpeg_quality,
+        progressive=True,
+        optimize=True,
+        subsampling="4:2:0",
+    )
+
+    webp_path = folder / f"{stem}.webp"
+    img.save(
+        webp_path,
+        format="WEBP",
+        quality=webp_quality,
+        lossless=webp_lossless,
+        method=6,
+    )
+
+    return {
+        "png": png_path,
+        "jpeg": jpg_path,
+        "webp": webp_path,
+    }

library_service/settings.py

@@ -10,6 +10,9 @@ from toml import load
 
 load_dotenv()
 
+BOOKS_PREVIEW_DIR = Path(__file__).parent / "static" / "books"
+BOOKS_PREVIEW_DIR.mkdir(parents=True, exist_ok=True)
+
 with open("pyproject.toml", "r", encoding="utf-8") as f:
     _pyproject = load(f)
 

library_service/static/page/book.js

@@ -34,6 +34,7 @@ $(document).ready(() => {
 
   const pathParts = window.location.pathname.split("/");
   const bookId = parseInt(pathParts[pathParts.length - 1]);
+  let isDraggingOver = false;
   let currentBook = null;
   let cachedUsers = null;
   let selectedLoanUserId = null;
@@ -48,6 +49,28 @@ $(document).ready(() => {
     }
     loadBookData();
     setupEventHandlers();
+    setupCoverUpload();
+  }
+
+  function getPreviewUrl(book) {
+    if (!book.preview_urls) {
+      return null;
+    }
+
+    const priorities = ["webp", "jpeg", "jpg", "png"];
+
+    for (const format of priorities) {
+      if (book.preview_urls[format]) {
+        return book.preview_urls[format];
+      }
+    }
+
+    const availableFormats = Object.keys(book.preview_urls);
+    if (availableFormats.length > 0) {
+      return book.preview_urls[availableFormats[0]];
+    }
+
+    return null;
   }
 
   function setupEventHandlers() {
@@ -75,6 +98,270 @@ $(document).ready(() => {
     $("#loan-due-date").val(future.toISOString().split("T")[0]);
   }
 
+  function setupCoverUpload() {
+    const $container = $("#book-cover-container");
+    const $fileInput = $("#cover-file-input");
+
+    $fileInput.on("change", function (e) {
+      const file = e.target.files[0];
+      if (file) {
+        uploadCover(file);
+      }
+      $(this).val("");
+    });
+
+    $container.on("dragenter", function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      if (!window.canManage()) return;
+      isDraggingOver = true;
+      showDropOverlay();
+    });
+
+    $container.on("dragover", function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      if (!window.canManage()) return;
+      isDraggingOver = true;
+    });
+
+    $container.on("dragleave", function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      if (!window.canManage()) return;
+
+      const rect = this.getBoundingClientRect();
+      const x = e.clientX;
+      const y = e.clientY;
+
+      if (x < rect.left || x > rect.right || y < rect.top || y > rect.bottom) {
+        isDraggingOver = false;
+        hideDropOverlay();
+      }
+    });
+
+    $container.on("drop", function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      if (!window.canManage()) return;
+
+      isDraggingOver = false;
+      hideDropOverlay();
+
+      const files = e.dataTransfer?.files || [];
+      if (files.length > 0) {
+        const file = files[0];
+
+        if (!file.type.startsWith("image/")) {
+          Utils.showToast("Пожалуйста, загрузите изображение", "error");
+          return;
+        }
+
+        uploadCover(file);
+      }
+    });
+  }
+
+  function showDropOverlay() {
+    const $container = $("#book-cover-container");
+    $container.find(".drop-overlay").remove();
+
+    const $overlay = $(`
+      <div class="drop-overlay absolute inset-0 flex flex-col items-center justify-center z-20 pointer-events-none">
+        <div class="absolute inset-2 border-2 border-dashed border-gray-600 rounded-lg"></div>
+        <svg class="w-10 h-10 text-gray-600 mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
+        </svg>
+        <span class="text-gray-700 text-sm font-medium text-center px-4">Отпустите для загрузки</span>
+      </div>
+    `);
+
+    $container.append($overlay);
+  }
+
+  function hideDropOverlay() {
+    $("#book-cover-container .drop-overlay").remove();
+  }
+
+  async function uploadCover(file) {
+    const $container = $("#book-cover-container");
+
+    const maxSize = 32 * 1024 * 1024;
+    if (file.size > maxSize) {
+      Utils.showToast("Файл слишком большой. Максимум 32 MB", "error");
+      return;
+    }
+
+    if (!file.type.startsWith("image/")) {
+      Utils.showToast("Пожалуйста, загрузите изображение", "error");
+      return;
+    }
+
+    const $loader = $(`
+      <div class="upload-loader absolute inset-0 bg-black bg-opacity-50 flex flex-col items-center justify-center z-20">
+        <svg class="animate-spin w-8 h-8 text-white mb-2" fill="none" viewBox="0 0 24 24">
+          <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+          <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+        </svg>
+        <span class="text-white text-sm">Загрузка...</span>
+      </div>
+    `);
+
+    $container.find(".upload-loader").remove();
+    $container.append($loader);
+
+    try {
+      const formData = new FormData();
+      formData.append("file", file);
+
+      const response = await Api.uploadFile(
+        `/api/books/${bookId}/preview`,
+        formData,
+      );
+
+      if (!response) {
+        return;
+      }
+
+      if (response.preview) {
+        currentBook.preview_urls = response.preview;
+      } else if (response.preview_urls) {
+        currentBook.preview_urls = response.preview_urls;
+      } else {
+        currentBook = response;
+      }
+
+      Utils.showToast("Обложка успешно загружена", "success");
+      renderBookCover(currentBook);
+    } catch (error) {
+      console.error("Upload error:", error);
+      Utils.showToast(error.message || "Ошибка загрузки обложки", "error");
+    } finally {
+      $container.find(".upload-loader").remove();
+    }
+  }
+
+  async function deleteCover() {
+    if (!confirm("Удалить обложку книги?")) {
+      return;
+    }
+
+    const $container = $("#book-cover-container");
+
+    const $loader = $(`
+      <div class="upload-loader absolute inset-0 bg-black bg-opacity-50 flex items-center justify-center z-20">
+        <svg class="animate-spin w-8 h-8 text-white" fill="none" viewBox="0 0 24 24">
+          <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+          <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+        </svg>
+      </div>
+    `);
+
+    $container.find(".upload-loader").remove();
+    $container.append($loader);
+
+    try {
+      await Api.delete(`/api/books/${bookId}/preview`);
+
+      currentBook.preview_urls = null;
+      Utils.showToast("Обложка удалена", "success");
+      renderBookCover(currentBook);
+    } catch (error) {
+      console.error("Delete error:", error);
+      Utils.showToast(error.message || "Ошибка удаления обложки", "error");
+    } finally {
+      $container.find(".upload-loader").remove();
+    }
+  }
+
+  function renderBookCover(book) {
+    const $container = $("#book-cover-container");
+    const canManage = window.canManage();
+    const previewUrl = getPreviewUrl(book);
+
+    if (previewUrl) {
+      $container.html(`
+        <img
+          src="${Utils.escapeHtml(previewUrl)}"
+          alt="Обложка книги ${Utils.escapeHtml(book.title)}"
+          class="w-full h-full object-cover"
+          onerror="this.onerror=null; this.parentElement.querySelector('.cover-fallback').classList.remove('hidden'); this.classList.add('hidden');"
+        />
+        <div class="cover-fallback hidden w-full h-full bg-gradient-to-br from-gray-400 to-gray-600 flex items-center justify-center absolute inset-0">
+          <svg class="w-20 h-20 text-white opacity-80" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path>
+          </svg>
+        </div>
+        ${
+          canManage
+            ? `
+          <button
+            id="delete-cover-btn"
+            class="absolute top-2 right-2 w-7 h-7 bg-red-500 hover:bg-red-600 text-white rounded-full flex items-center justify-center shadow-lg opacity-0 group-hover:opacity-100 transition-opacity z-10"
+            title="Удалить обложку"
+          >
+            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
+            </svg>
+          </button>
+          <div class="absolute inset-0 bg-black bg-opacity-0 group-hover:bg-opacity-30 transition-all flex flex-col items-center justify-center cursor-pointer z-0" id="cover-replace-overlay">
+            <svg class="w-8 h-8 text-white opacity-0 group-hover:opacity-100 transition-opacity mb-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
+            </svg>
+            <span class="text-white text-center opacity-0 group-hover:opacity-100 transition-opacity text-xs font-medium pointer-events-none px-2">
+              Заменить
+            </span>
+          </div>
+        `
+            : ""
+        }
+      `);
+
+      if (canManage) {
+        $("#delete-cover-btn").on("click", function (e) {
+          e.stopPropagation();
+          deleteCover();
+        });
+
+        $("#cover-replace-overlay").on("click", function () {
+          $("#cover-file-input").trigger("click");
+        });
+      }
+    } else {
+      if (canManage) {
+        $container.html(`
+          <div
+            id="cover-upload-zone"
+            class="w-full h-full bg-gray-100 flex flex-col items-center justify-center cursor-pointer hover:bg-gray-200 transition-all text-center relative"
+          >
+            <div class="absolute inset-2 border-2 border-dashed border-gray-300 rounded-lg pointer-events-none"></div>
+            <svg class="w-8 h-8 text-gray-400 mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
+            </svg>
+            <span class="text-gray-500 text-xs font-medium px-2">
+              Добавить обложку
+            </span>
+            <span class="text-gray-400 text-xs mt-1 px-2">
+              или перетащите
+            </span>
+          </div>
+        `);
+
+        $("#cover-upload-zone").on("click", function () {
+          $("#cover-file-input").trigger("click");
+        });
+      } else {
+        $container.html(`
+          <div class="w-full h-full bg-gradient-to-br from-gray-400 to-gray-600 flex items-center justify-center">
+            <svg class="w-20 h-20 text-white opacity-80" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path>
+            </svg>
+          </div>
+        `);
+      }
+    }
+  }
+
   function loadBookData() {
     Api.get(`/api/books/${bookId}`)
       .then((book) => {
@@ -234,12 +521,16 @@ $(document).ready(() => {
   function renderBook(book) {
     $("#book-title").text(book.title);
     $("#book-id").text(`ID: ${book.id}`);
+
+    renderBookCover(book);
+
     if (book.page_count && book.page_count > 0) {
       $("#book-page-count-value").text(book.page_count);
       $("#book-page-count-text").removeClass("hidden");
     } else {
       $("#book-page-count-text").addClass("hidden");
     }
+
     $("#book-authors-text").text(
       book.authors.map((a) => a.name).join(", ") || "Автор неизвестен",
     );

library_service/static/utils.js

@@ -160,6 +160,67 @@ const Api = {
       body: formData.toString(),
     });
   },
+
+  async uploadFile(endpoint, formData) {
+    const fullUrl = this.getBaseUrl() + endpoint;
+    const token = StorageHelper.get("access_token");
+
+    const headers = {};
+    if (token) {
+      headers["Authorization"] = `Bearer ${token}`;
+    }
+
+    try {
+      const response = await fetch(fullUrl, {
+        method: "POST",
+        headers: headers,
+        body: formData,
+        credentials: "include",
+      });
+
+      if (response.status === 401) {
+        const refreshed = await Auth.tryRefresh();
+        if (refreshed) {
+          headers["Authorization"] =
+            `Bearer ${StorageHelper.get("access_token")}`;
+          const retryResponse = await fetch(fullUrl, {
+            method: "POST",
+            headers: headers,
+            body: formData,
+            credentials: "include",
+          });
+          if (retryResponse.ok) {
+            return retryResponse.json();
+          }
+        }
+        Auth.logout();
+        return null;
+      }
+
+      if (!response.ok) {
+        const errorData = await response.json().catch(() => ({}));
+        let errorMessage = `Ошибка ${response.status}`;
+
+        if (typeof errorData.detail === "string") {
+          errorMessage = errorData.detail;
+        } else if (Array.isArray(errorData.detail)) {
+          errorMessage = errorData.detail.map((e) => e.msg || e).join(", ");
+        } else if (errorData.detail?.message) {
+          errorMessage = errorData.detail.message;
+        } else if (errorData.message) {
+          errorMessage = errorData.message;
+        }
+
+        const error = new Error(errorMessage);
+        error.status = response.status;
+        throw error;
+      }
+
+      return response.json();
+    } catch (error) {
+      throw error;
+    }
+  },
 };
 
 const Auth = {

library_service/templates/analytics.html

@@ -9,8 +9,8 @@
         <div class="flex items-center gap-4">
             <label class="text-sm font-medium text-gray-600">Период анализа:</label>
             <select id="period-select" class="px-3 py-1.5 text-sm border border-gray-200 rounded-lg focus:outline-none focus:ring-1 focus:ring-gray-400 transition bg-white">
-                <option value="7">7 дней</option>
+                <option value="7" selected>7 дней</option>
-                <option value="30" selected>30 дней</option>
+                <option value="30">30 дней</option>
                 <option value="90">90 дней</option>
                 <option value="180">180 дней</option>
                 <option value="365">365 дней</option>

library_service/templates/base.html

@@ -7,9 +7,7 @@
         <meta property="og:title" content="{{ title }}" />
         <meta property="og:type" content="website" />
         <meta property="og:description" content="Ваша персональная библиотека книг" />
-        <meta property="og:url" content="//{{ domain }}/" />
+        <meta property="og:url" content="{{ request.url.scheme }}://{{ domain }}/" />
-        <!--<meta property="og:image" content="//{{ domain }}/img/{{ img }}.png" />-->
-
         <script
             defer
             src="https://cdn.jsdelivr.net/npm/alpinejs@3.13.3/dist/cdn.min.js"
@@ -24,6 +22,7 @@
         class="flex flex-col min-h-screen bg-gray-100"
         x-data="{
             user: null,
+            menuOpen: false,
             async init() {
                 document.addEventListener('auth:login', async (e) => {
                     this.user = e.detail;
@@ -34,31 +33,43 @@
         }"
     >
         <header class="bg-gray-600 text-white p-4 shadow-md">
-            <div class="mx-auto pl-5 pr-3 flex justify-between items-center">
+            <div class="mx-auto px-3 md:pl-5 md:pr-3 flex justify-between items-center">
-                <a class="flex gap-4 items-center max-w-10 h-auto" href="/">
+                <div class="flex items-center">
+                    <button
+                        @click="menuOpen = !menuOpen"
+                        class="md:hidden flex gap-2 items-center hover:opacity-80 transition focus:outline-none"
+                        :aria-expanded="menuOpen"
+                        aria-label="Меню навигации"
+                    >
+                        <img class="invert max-w-10 h-auto" src="/static/logo.svg" />
+                        <h1 class="text-xl font-bold">
+                            <span class="text-gray-300 mr-1">≡</span>LiB
+                        </h1>
+                    </button>
+
+                    <a class="hidden md:flex gap-4 items-center max-w-10 h-auto" href="/">
                         <img class="invert" src="/static/logo.svg" />
                         <h1 class="text-2xl font-bold">LiB</h1>
                     </a>
-                <nav>
+                </div>
+
+                <nav class="hidden md:block">
                     <ul class="flex space-x-4">
                         <li>
                             <a href="/" class="hover:text-gray-200">Главная</a>
                         </li>
                         <li>
-                            <a href="/books" class="hover:text-gray-200"
+                            <a href="/books" class="hover:text-gray-200">Книги</a>
-                                >Книги</a
-                            >
                         </li>
                         <li>
-                            <a href="/authors" class="hover:text-gray-200"
+                            <a href="/authors" class="hover:text-gray-200">Авторы</a>
-                                >Авторы</a
-                            >
                         </li>
                         <li>
                             <a href="/api" class="hover:text-gray-200">API</a>
                         </li>
                     </ul>
                 </nav>
+
                 <div class="relative" x-data="{ open: false }">
                     <template x-if="!user">
                         <a
@@ -110,7 +121,7 @@
                             <div
                                 x-show="open"
                                 x-transition
-                                class="absolute right-0 mt-2 w-56 bg-white rounded-lg shadow-lg border border-gray-200 z-50 overflow-hidden text-gray-900"
+                                class="absolute right-0 mt-2 w-56 max-w-[calc(100vw-2rem)] bg-white rounded-lg shadow-lg border border-gray-200 z-50 overflow-hidden text-gray-900"
                                 style="display: none"
                             >
                                 <div class="px-4 py-3 border-b border-gray-200">
@@ -235,17 +246,71 @@
                     </template>
                 </div>
             </div>
+
+            <nav
+                x-show="menuOpen"
+                x-transition:enter="transition ease-out duration-200"
+                x-transition:enter-start="opacity-0 -translate-y-2"
+                x-transition:enter-end="opacity-100 translate-y-0"
+                x-transition:leave="transition ease-in duration-150"
+                x-transition:leave-start="opacity-100 translate-y-0"
+                x-transition:leave-end="opacity-0 -translate-y-2"
+                @click.outside="menuOpen = false"
+                class="md:hidden mt-4 pb-2 border-t border-gray-500"
+                style="display: none"
+            >
+                <ul class="flex flex-col space-y-1 pt-3">
+                    <li>
+                        <a
+                            href="/"
+                            @click="menuOpen = false"
+                            class="block px-3 py-2 rounded hover:bg-gray-500 transition"
+                        >
+                            Главная
+                        </a>
+                    </li>
+                    <li>
+                        <a
+                            href="/books"
+                            @click="menuOpen = false"
+                            class="block px-3 py-2 rounded hover:bg-gray-500 transition"
+                        >
+                            Книги
+                        </a>
+                    </li>
+                    <li>
+                        <a
+                            href="/authors"
+                            @click="menuOpen = false"
+                            class="block px-3 py-2 rounded hover:bg-gray-500 transition"
+                        >
+                            Авторы
+                        </a>
+                    </li>
+                    <li>
+                        <a
+                            href="/api"
+                            @click="menuOpen = false"
+                            class="block px-3 py-2 rounded hover:bg-gray-500 transition"
+                        >
+                            API
+                        </a>
+                    </li>
+                </ul>
+            </nav>
         </header>
         <main class="flex-grow">{% block content %}{% endblock %}</main>
         <div
             id="toast-container"
-            class="fixed bottom-5 right-5 flex flex-col gap-2 z-50"
+            class="fixed bottom-5 left-4 right-4 md:left-auto md:right-5 flex flex-col gap-2 z-50 items-center md:items-end"
         ></div>
-
         <footer class="bg-gray-800 text-white p-4 mt-8">
-            <div class="container mx-auto text-center">
+            <div class="container mx-auto text-center text-sm md:text-base">
-                <p>&copy; 2026 LiB Library. Разработано в рамках дипломного проекта.
+                <p>
-                  Код открыт под лицензией <a href="https://github.com/wowlikon/LiB/blob/main/LICENSE">MIT</a>.
+                    &copy; 2026 LiB Library. Разработано в рамках дипломного проекта.
+                    <br class="sm:hidden" />
+                    Код открыт под лицензией
+                    <a href="https://github.com/wowlikon/LiB/blob/main/LICENSE" class="underline hover:text-gray-300">MIT</a>.
                 </p>
             </div>
         </footer>

library_service/templates/book.html

@@ -66,8 +66,10 @@
                 class="flex flex-col items-center mb-6 md:mb-0 md:mr-8 flex-shrink-0 w-full md:w-auto"
             >
                 <div
-                    class="w-40 h-56 bg-gradient-to-br from-gray-400 to-gray-600 rounded-lg flex items-center justify-center shadow-md mb-4"
+                    id="book-cover-container"
+                    class="relative w-40 h-56 rounded-lg shadow-md mb-4 overflow-hidden flex items-center justify-center bg-gray-100 group"
                 >
+                    <div class="w-full h-full bg-gradient-to-br from-gray-400 to-gray-600 flex items-center justify-center">
                         <svg
                             class="w-20 h-20 text-white opacity-80"
                             fill="none"
@@ -82,13 +84,14 @@
                             ></path>
                         </svg>
                     </div>
+                </div>
+                <input type="file" id="cover-file-input" class="hidden" accept="image/*" />
                 <div
                     id="book-status-container"
                     class="relative w-full flex justify-center z-10 mb-4"
                 ></div>
                 <div id="book-actions-container" class="w-full"></div>
             </div>
-
             <div class="flex-1 w-full">
                 <div
                     class="flex flex-col md:flex-row md:items-start md:justify-between mb-2"
@@ -300,3 +303,8 @@
 {% endblock %} {% block scripts %}
 <script src="/static/page/book.js"></script>
 {% endblock %}
+{% block extra_head %}
+{% if img %}
+<meta property="og:image" content="{{ request.url.scheme }}://{{ domain }}/static/books/{{ img }}.jpg" />
+{% endif %}
+{% endblock %}

migrations/versions/abbc38275032_book_preview.py

@@ -0,0 +1,33 @@
+"""Book preview
+
+Revision ID: abbc38275032
+Revises: 6c616cc9d1f0
+Create Date: 2026-02-01 14:41:14.611420
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel, pgvector
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'abbc38275032'
+down_revision: Union[str, None] = '6c616cc9d1f0'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('book', sa.Column('preview_id', sa.Uuid(), nullable=True))
+    op.create_index(op.f('ix_book_preview_id'), 'book', ['preview_id'], unique=True)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_book_preview_id'), table_name='book')
+    op.drop_column('book', 'preview_id')
+    # ### end Alembic commands ###

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "LiB"
-version = "0.8.1"
+version = "0.9.0"
 description = "Это простое API для управления авторами, книгами и их жанрами."
 authors = [{ name = "wowlikon" }]
 readme = "README.md"

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