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 threading import Lock

critical_function_lock = Lock()

from src.classes import boardgame_classes, play_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 critical_function_lock:
        with Session(engine) as session:
            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()

def add_multiple_boardgames(boardgame_list: list[Union[
    boardgame_classes.BoardGame, boardgame_classes.BoardGameExpansion,
    boardgame_classes.OwnedBoardGame, boardgame_classes.OwnedBoardGameExpansion,
    boardgame_classes.WishlistBoardGame, boardgame_classes.WishlistBoardGameExpansion]]):

    with critical_function_lock:
        with Session(engine) as session:
            for boardgame in boardgame_list:
                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()

def get_boardgame(boardgame_id: int) -> Union[
    boardgame_classes.BoardGame, boardgame_classes.BoardGameExpansion]:

    with Session(engine) as session: 
        statement = select(boardgame_classes.BoardGame).where(boardgame_classes.BoardGame.id == boardgame_id)
        
        base_boardgames = session.exec(statement).all()

        statement = select(boardgame_classes.BoardGameExpansion).where(boardgame_classes.BoardGameExpansion.id == boardgame_id)

        expansion_boardgames = session.exec(statement).all()

        returned_boardgames = base_boardgames + expansion_boardgames

        if len(returned_boardgames) == 0:
            boardgame = None
        else:
            boardgame = returned_boardgames[0]

        return boardgame
   
def get_multiple_boardgames(boardgame_ids: list[int]) -> tuple[Union[
    list[boardgame_classes.BoardGame], list[boardgame_classes.BoardGameExpansion]], list[int]]:

        with Session(engine) as session:
            statement = select(boardgame_classes.BoardGame).where(boardgame_classes.BoardGame.id.in_(boardgame_ids))
            results = session.exec(statement)

            boardgames = results.all()

            statement = select(boardgame_classes.BoardGameExpansion).where(boardgame_classes.BoardGameExpansion.id.in_(boardgame_ids))
            results = session.exec(statement)

            expansions = results.all()

            boardgames += expansions

            missing_boardgame_ids = list(filter(lambda x: x not in [boardgame.id for boardgame in boardgames], boardgame_ids))

            return boardgames, missing_boardgame_ids

def get_all_boardgames(boardgame_type: SQLModel) -> 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:
        statement = select(boardgame_type)
            
        results = session.exec(statement)
        
        boardgame_list = results.all()

        return boardgame_list   

def add_play(play: play_classes.Play):

    with critical_function_lock:

        with Session(engine) as session:
            session.add(play)

            session.commit()
            session.refresh(play)

def add_multiple_plays(play_list: list[play_classes.Play]):

    with critical_function_lock:
        with Session(engine) as session:
            for play in play_list:
                is_play_present = len(session.exec(select(play_classes.Play).where(play_classes.Play.id == play.id)).all()) != 0

                if not is_play_present:
                    session.add(play)

            session.commit()

def get_plays() -> list[play_classes.Play]:
    with Session(engine) as session:
        statement = select(play_classes.Play)
        results = session.exec(statement)

        play_list = results.all()

        return play_list

def get_players_from_play(play_id: int) -> list[play_classes.PlayPlayer]:
    with Session(engine) as session:
        statement = select(play_classes.PlayPlayer).where(play_classes.PlayPlayer.play_id == play_id)
        results = session.exec(statement)

        player_list = results.all()

        return player_list

def delete_database():
    SQLModel.metadata.drop_all(engine)


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