from datetime import datetime

from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, UniqueConstraint
from app.database import Base


class UserCollection(Base):
    __tablename__ = "user_collections"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    title = Column(String(200), nullable=False)
    created_at = Column(DateTime, default=datetime.utcnow)


class UserCollectionQuestion(Base):
    __tablename__ = "user_collection_questions"
    __table_args__ = (UniqueConstraint("collection_id", "question_id", name="uq_collection_question"),)

    id = Column(Integer, primary_key=True, index=True)
    collection_id = Column(Integer, ForeignKey("user_collections.id", ondelete="CASCADE"), nullable=False)
    question_id = Column(Integer, ForeignKey("questions.id", ondelete="CASCADE"), nullable=False)