from sqlalchemy.orm import Session

from app.domain.models.answer_files import AnswerFile


class AnswerFilesRepository:
    def __init__(self, db: Session):
        self.db = db

    def get_all(self):
        return self.db.query(AnswerFile).all()

    def get_by_id(self, answer_file_id: int):
        return self.db.query(AnswerFile).filter(AnswerFile.id == answer_file_id).first()

    def create(self, answer_file: AnswerFile):
        self.db.add(answer_file)
        self.db.commit()
        self.db.refresh(answer_file)
        return answer_file

    def update(self, answer_file: AnswerFile):
        self.db.merge(answer_file)
        self.db.commit()
        self.db.refresh(answer_file)
        return answer_file

    def delete(self, answer_file_id: int):
        answer_file = self.db.query(AnswerFile).filter(AnswerFile.id == answer_file_id).first()
        if answer_file:
            self.db.delete(answer_file)
            self.db.commit()
            return answer_file

        return None