Files
FabledCurator/backend/app/models/image_record.py
T
2026-05-18 21:33:11 -04:00

83 lines
3.2 KiB
Python

"""ImageRecord — the gallery's primary entity, ported from ImageRepo.
ML fields and thumbnails are declared now (in FC-1) so FC-2 can populate them
without a schema migration. The SigLIP embedding column uses pgvector's Vector
type — pgvector extension is enabled in the initial migration.
"""
from datetime import datetime
from pgvector.sqlalchemy import Vector
from sqlalchemy import (
JSON,
BigInteger,
DateTime,
Enum,
ForeignKey,
Integer,
String,
Text,
func,
)
from sqlalchemy.orm import Mapped, mapped_column
from .base import Base
ORIGIN_CHOICES = ("downloaded", "imported_filesystem", "uploaded")
class ImageRecord(Base):
__tablename__ = "image_record"
id: Mapped[int] = mapped_column(Integer, primary_key=True)
# On-disk identity
path: Mapped[str] = mapped_column(Text, nullable=False, unique=True)
sha256: Mapped[str] = mapped_column(String(64), nullable=False, unique=True, index=True)
phash: Mapped[str | None] = mapped_column(String(32), nullable=True, index=True)
size_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
mime: Mapped[str] = mapped_column(String(64), nullable=False)
width: Mapped[int | None] = mapped_column(Integer, nullable=True)
height: Mapped[int | None] = mapped_column(Integer, nullable=True)
# Integrity verification status. FC-2e populates this; FC-2a leaves rows at 'unknown'.
# Values: 'unknown' (default), 'ok', 'corrupt', 'failed_verification'.
integrity_status: Mapped[str] = mapped_column(
String(24), nullable=False, default="unknown", index=True
)
# Thumbnail (populated by FC-2)
thumbnail_path: Mapped[str | None] = mapped_column(Text, nullable=True)
# Origin / provenance pointers
origin: Mapped[str] = mapped_column(Enum(*ORIGIN_CHOICES, name="origin_enum"), nullable=False)
primary_post_id: Mapped[int | None] = mapped_column(
ForeignKey("post.id", ondelete="SET NULL"), nullable=True, index=True
)
# FC-2d-vii-c: canonical per-image artist (the single source of truth
# for attribution; provenance posts remain lineage detail).
artist_id: Mapped[int | None] = mapped_column(
ForeignKey("artist.id", ondelete="SET NULL"), nullable=True, index=True
)
# ML fields (populated by FC-2's ml-worker)
tagger_predictions: Mapped[dict | None] = mapped_column(JSON, nullable=True)
tagger_model_version: Mapped[str | None] = mapped_column(String(128), nullable=True)
# 1152 = SigLIP-so400m embedding dim. Swapping models in FC-2 may require
# a column-width migration.
siglip_embedding: Mapped[list[float] | None] = mapped_column(Vector(1152), nullable=True)
siglip_model_version: Mapped[str | None] = mapped_column(String(128), nullable=True)
# Centroid score cache (populated post-tagging)
centroid_scores: Mapped[dict | None] = mapped_column(JSON, nullable=True)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True),
nullable=False,
server_default=func.now(),
onupdate=func.now(),
)