"""Artist — unified entity that is both the gallery's ``artist:`` tag concept
and GallerySubscriber's Subscription. ``is_subscription`` is True if any
Sources are attached.
"""

from datetime import datetime

from sqlalchemy import Boolean, DateTime, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from .base import Base


class Artist(Base):
    __tablename__ = "artist"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    name: Mapped[str] = mapped_column(String(255), nullable=False, unique=True)
    slug: Mapped[str] = mapped_column(String(255), nullable=False, unique=True)
    notes: Mapped[str | None] = mapped_column(Text, nullable=True)

    # True once a Source is attached; flips false if all sources removed.
    is_subscription: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)

    # Per-artist scheduling overrides; null means "use global default".
    auto_check: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    check_interval_seconds: Mapped[int | None] = mapped_column(Integer, nullable=True)

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, server_default=func.now()
    )

    sources = relationship("Source", back_populates="artist", cascade="all, delete-orphan")