import uuid
from datetime import datetime
from typing import TYPE_CHECKING

from sqlalchemy import DateTime, ForeignKey, Integer, String, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base

if TYPE_CHECKING:
    from app.models.object import InventoryObject


class ObjectPhoto(Base):
    __tablename__ = "object_photos"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    object_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("objects.id", ondelete="CASCADE"), nullable=False, index=True
    )
    storage_key: Mapped[str] = mapped_column(String(512), nullable=False)
    content_type: Mapped[str] = mapped_column(String(128), nullable=False)
    position: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    object: Mapped["InventoryObject"] = relationship(back_populates="photos")