97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
from typing import List, Optional
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from sqlalchemy.orm import Session
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from models.book import Book
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from schemas.book import UserBookCreate, UserBookUpdate
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import uuid
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def get_user_books(db: Session, title: Optional[str] = None, author: Optional[str] = None, genre: Optional[str] = None) -> List[Book]:
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"""
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Retrieves a list of user books from the database based on optional filters.
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Args:
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db (Session): The database session.
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title (Optional[str]): Filter by book title.
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author (Optional[str]): Filter by book author.
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genre (Optional[str]): Filter by book genre.
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Returns:
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List[Book]: A list of book objects matching the filters.
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"""
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query = db.query(Book)
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if title:
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query = query.filter(Book.title.ilike(f"%{title}%"))
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if author:
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query = query.filter(Book.author.ilike(f"%{author}%"))
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if genre:
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query = query.filter(Book.genre.ilike(f"%{genre}%"))
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return query.all()
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def create_user_book(db: Session, book_data: UserBookCreate) -> Book:
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"""
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Creates a new user book in the database.
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Args:
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db (Session): The database session.
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book_data (UserBookCreate): The data for the book to create.
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Returns:
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Book: The newly created book object.
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"""
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db_book = Book(**book_data.dict())
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db.add(db_book)
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db.commit()
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db.refresh(db_book)
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return db_book
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def get_user_book_by_id(db: Session, book_id: uuid.UUID) -> Optional[Book]:
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"""
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Retrieves a single user book by its ID.
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Args:
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db (Session): The database session.
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book_id (UUID): The ID of the book to retrieve.
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Returns:
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Optional[Book]: The book object if found, otherwise None.
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"""
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return db.query(Book).filter(Book.id == book_id).first()
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def update_user_book(db: Session, book_id: uuid.UUID, book_data: UserBookUpdate) -> Optional[Book]:
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"""
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Updates an existing user book in the database.
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Args:
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db (Session): The database session.
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book_id (UUID): The ID of the book to update.
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book_data (UserBookUpdate): The updated data for the book.
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Returns:
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Optional[Book]: The updated book object if found, otherwise None.
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"""
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db_book = db.query(Book).filter(Book.id == book_id).first()
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if db_book:
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update_data = book_data.dict(exclude_unset=True)
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for key, value in update_data.items():
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setattr(db_book, key, value)
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db.commit()
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db.refresh(db_book)
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return db_book
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return None
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def delete_user_book(db: Session, book_id: uuid.UUID) -> bool:
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"""
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Deletes a user book from the database.
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Args:
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db (Session): The database session.
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book_id (UUID): The ID of the book to delete.
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Returns:
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bool: True if the book was deleted, False otherwise.
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"""
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db_book = db.query(Book).filter(Book.id == book_id).first()
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if db_book:
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db.delete(db_book)
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db.commit()
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return True
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return False |