bgg_api/src/modules/db_connection.py

from sqlmodel import create_engine, SQLModel, Session, select
from src.config import definitions
from typing import Union

from src.classes import boardgame_classes

sqlite_url = definitions.SQLITE_URL


connect_args = {"check_same_thread": False}
engine = create_engine(sqlite_url, echo=True, connect_args=connect_args)

def add_boardgame(boardgame: Union[
    boardgame_classes.BoardGame, boardgame_classes.BoardGameExpansion,
    boardgame_classes.OwnedBoardGame, boardgame_classes.OwnedBoardGameExpansion,
    boardgame_classes.WishlistBoardGame, boardgame_classes.WishlistBoardGameExpansion]):

    with Session(engine) as session:

        #First check if board game is not already present
        is_boardgame_present = len(session.exec(
            select(boardgame.__class__).where(boardgame.__class__.id == boardgame.id)
            ).all()) != 0

        if not is_boardgame_present:
            session.add(boardgame)

            session.commit()
            session.refresh(boardgame)

def get_boardgames(boardgame_type: SQLModel, boardgame_id = None) -> Union[
    list[boardgame_classes.BoardGame], list[boardgame_classes.BoardGameExpansion],
    list[boardgame_classes.OwnedBoardGame], list[boardgame_classes.OwnedBoardGameExpansion],
    list[boardgame_classes.WishlistBoardGame], list[boardgame_classes.WishlistBoardGameExpansion]]:

    with Session(engine) as session:
        session.expire_on_commit = False
        if boardgame_id == None:
            statement = select(boardgame_type)
        else:
            statement = select(boardgame_type).where(boardgame_type.id == boardgame_id)
        results = session.exec(statement)
        
        boardgame_list = results.all()

        return boardgame_list   


def delete_database():
    boardgame_classes.BoardGame.__table__.drop(engine)
    boardgame_classes.OwnedBoardGame.__table__.drop(engine)
    boardgame_classes.OwnedBoardGameExpansion.__table__.drop(engine)
    boardgame_classes.WishlistBoardGame.__table__.drop(engine)
    boardgame_classes.WishlistBoardGameExpansion.__table__.drop(engine)


def create_db_and_tables():
    SQLModel.metadata.create_all(engine)