from sqlalchemy import Column, String, Integer, DateTime, func, ForeignKey, Text
from sqlalchemy.dialects.postgresql import UUID
import uuid
from sqlalchemy.orm import relationship

from app.db.session import Base

class Scene(Base):
    __tablename__ = "scenes"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    project_id = Column(UUID(as_uuid=True), ForeignKey("projects.id", ondelete="CASCADE"), nullable=False)
    slugline = Column(String, nullable=False)
    raw_content = Column(Text, nullable=True)
    sequence_number = Column(Integer, nullable=False)
    created_at = Column(DateTime, default=func.now())

    project = relationship("Project", back_populates="scenes")
    shots = relationship("Shot", back_populates="scene", cascade="all, delete-orphan")