"""Videos/trailers as normalized entities (section 11).

Aurora never downloads copyrighted video media — only stores the
provider's reference/URL and metadata about it.
"""

from __future__ import annotations

import uuid
from datetime import date

from sqlalchemy import Boolean, Date, ForeignKey, Index, String, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base, TimestampMixin, UUIDPrimaryKeyMixin
from app.models.enums import VideoType
from app.models.provider import Provider


class Video(Base, UUIDPrimaryKeyMixin, TimestampMixin):
    __tablename__ = "videos"
    __table_args__ = (
        Index("ix_videos_entity", "entity_type", "entity_id"),
        UniqueConstraint("provider_id", "provider_video_id", name="uq_video_provider_source"),
    )

    # Polymorphic target: "movie", "series", "season", "episode".
    entity_type: Mapped[str] = mapped_column(String(30), nullable=False)
    entity_id: Mapped[uuid.UUID] = mapped_column(nullable=False)

    video_type: Mapped[VideoType] = mapped_column(nullable=False)

    provider_id: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("providers.id", ondelete="CASCADE"), nullable=False
    )
    provider_video_id: Mapped[str] = mapped_column(String(200), nullable=False)
    site: Mapped[str | None] = mapped_column(String(100), nullable=True)  # "YouTube", "Vimeo"
    url: Mapped[str] = mapped_column(String(1000), nullable=False)

    language_code: Mapped[str | None] = mapped_column(
        ForeignKey("languages.code"), nullable=True
    )
    country_code: Mapped[str | None] = mapped_column(ForeignKey("countries.code"), nullable=True)
    is_official: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
    published_at: Mapped[date | None] = mapped_column(Date, nullable=True)

    provider: Mapped[Provider] = relationship()


__all__ = ["Video"]