from sqlalchemy.orm import Session

from . import models, schemas


def get_player_by_id(db: Session, player_id: int):
    return db.query(models.Player).filter(models.Player.id == player_id).first()


def get_players(db: Session, skip: int = 0, limit: int = 100):
    return db.query(models.Player).offset(skip).limit(limit).all()


def create_player(db: Session, player: schemas.PlayerCreate):
    db_player = models.Player(**player.model_dump())
    db.add(db_player)
    db.commit()
    db.refresh(db_player)
    return db_player


def delete_player_by_id(db: Session, player_id: int):
    db.query(models.Player).filter(models.Player.id == player_id).delete()
    db.commit()


def get_deck_by_id(db: Session, deck_id: int):
    return db.query(models.Deck).filter(models.Deck.id == deck_id).first()


def get_decks(db: Session, skip: int = 0, limit: int = 100):
    return db.query(models.Deck).offset(skip).limit(limit).all()


def create_deck(db: Session, deck: schemas.DeckCreate):
    db_deck = models.Deck(**deck.model_dump())
    db.add(db_deck)
    db.commit()
    db.refresh(db_deck)
    return db_deck


def delete_deck_by_id(db: Session, deck_id: int):
    db.query(models.Deck).filter(models.Deck.id == deck_id).delete()
    db.commit()
    return "", 204


def get_game_by_id(db: Session, game_id: int):
    return db.query(models.Game).filter(models.Game.id == game_id).first()


def get_games(db: Session, skip: int = 0, limit: int = 100):
    return db.query(models.Game).offset(skip).limit(limit).all()


def create_game(db: Session, game: schemas.GameCreate):
    db_game = models.Game(**game.model_dump())
    db.add(db_game)
    db.commit()
    db.refresh(db_game)
    return db_game


def delete_game_by_id(db: Session, game_id: int):
    db.query(models.Game).filter(models.Game.id == game_id).delete()
    db.commit()
    return "", 204


# Note - I'm _super_ new to FastAPI and have no idea about best practices - I don't know whether it's correct to put
# these "higher-level than basic CRUD, but still database-interacting" methods in `crud.py`, or if they should go
# elsewhere. Feedback welcome! (Lol as if anyone but me is ever going to actually look at this code :P )


def get_latest_score_for_deck(db: Session, deck_id: int):
    scores = get_all_scores_for_deck(db, deck_id)

    if scores:
        return scores[0].score
    else:
        # Really we could pick any value as the initial rating for an as-yet-unplayed deck -
        # scores are all relative, not absolutely, so any value would be appropriate!
        # This was chosen just because it's a nice round number :)
        return 1000.0


def get_all_scores_for_deck(db: Session, deck_id: int):
    return (
        db.query(models.EloScore)
        .join(models.Game)
        .filter(models.EloScore.deck_id == deck_id)
        .order_by(models.Game.id.desc())
        .all()
    )