from sqlalchemy.orm import Session

from app.domain.models.lecture import Lecture


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

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

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

    def create(self, lecture: Lecture):
        self.db.add(lecture)
        self.db.commit()
        self.db.refresh(lecture)
        return lecture

    def update(self, lecture: Lecture):
        self.db.merge(lecture)
        self.db.commit()
        self.db.refresh(lecture)
        return lecture

    def delete(self, lecture_id: int):
        lecture = self.db.query(Lecture).filter(Lecture.id == lecture_id).first()
        if lecture:
            self.db.delete(lecture)
            self.db.commit()
            return lecture

        return None