[REF] Refactor

app/schema/library/book.py

@@ -1,6 +1,6 @@
 from typing import List
 from typing import Optional
-from sqlalchemy import String
+from sqlalchemy import String, ForeignKey
 from sqlalchemy.orm import Mapped
 from sqlalchemy.orm import mapped_column
 from sqlalchemy.orm import relationship
@@ -10,14 +10,16 @@ from .base import Base
 class Book(Base):
     __tablename__ = "book"
     id: Mapped[int] = mapped_column(primary_key=True)
+    hash: Mapped[str] = mapped_column(String(255))
+    file_name: Mapped[str] = mapped_column(String(255))
+    file_path: Mapped[str] = mapped_column(String(65656))
     name: Mapped[str] = mapped_column(String(255))
     publisher: Mapped[str] = mapped_column(String(255))
     notes: Mapped[str] = mapped_column(String(65656))
     classification: Mapped[int] = mapped_column(primary_key=True)
 
-    tags: Mapped[List["Tags"]] = relationship(
-        back_populates="books", cascade="all, delete-orphan"
-    )
+    library_id: Mapped[int] = mapped_column(ForeignKey("library.id"))
+    library: Mapped[int] = relationship("Library", back_populates="books")
 
     def __repr__(self) -> str:
         return f"Book(id={self.id!r}, name={self.name!r}, publisher={self.publisher!r}," \