from sqlalchemy import Column, Integer, String, ForeignKey, DateTime, func
from sqlalchemy.orm import relationship
from app.db.database import Base


class Collection(Base):
    __tablename__ = "collections"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(120), nullable=False, unique=True)
    created_at = Column(DateTime, server_default=func.now())

    characters = relationship(
        "Character",
        back_populates="collection",
        cascade="all, delete-orphan",
    )


class Character(Base):
    __tablename__ = "characters"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(255), nullable=False)
    filename = Column(String(255), nullable=False)
    s3_url = Column(String(1024), nullable=False)
    collection_id = Column(
        Integer, ForeignKey("collections.id", ondelete="CASCADE"), nullable=False
    )

    collection = relationship("Collection", back_populates="characters")