from sqlalchemy import Enum, ForeignKey, String, Text, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base
from app.models.enums import ContentLanguage, ContentLength


class PlaceContent(Base):
    __tablename__ = "place_content"
    __table_args__ = (UniqueConstraint("place_id", "language", "length", name="uq_place_content_variant"),)

    id: Mapped[int] = mapped_column(primary_key=True)
    place_id: Mapped[int] = mapped_column(ForeignKey("places.id", ondelete="CASCADE"), nullable=False)
    language: Mapped[ContentLanguage] = mapped_column(
        Enum(ContentLanguage, name="content_language", native_enum=True), nullable=False
    )
    length: Mapped[ContentLength] = mapped_column(
        Enum(ContentLength, name="content_length", native_enum=True), nullable=False
    )
    title: Mapped[str] = mapped_column(String(256), nullable=False)
    body: Mapped[str] = mapped_column(Text, nullable=False)

    place: Mapped["Place"] = relationship(back_populates="contents")