37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
"""Post — provenance anchor for content downloaded from a Source.
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A Post is one creator post; it may contain many images/videos.
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"""
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from datetime import datetime
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from sqlalchemy import JSON, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column
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from .base import Base
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class Post(Base):
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__tablename__ = "post"
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__table_args__ = (
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UniqueConstraint("source_id", "external_post_id", name="uq_post_source_external_id"),
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)
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id: Mapped[int] = mapped_column(Integer, primary_key=True)
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source_id: Mapped[int] = mapped_column(
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ForeignKey("source.id", ondelete="CASCADE"), nullable=False, index=True
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)
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external_post_id: Mapped[str] = mapped_column(String(128), nullable=False)
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post_url: Mapped[str | None] = mapped_column(Text, nullable=True)
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post_title: Mapped[str | None] = mapped_column(Text, nullable=True)
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post_date: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
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raw_metadata: Mapped[dict | None] = mapped_column(JSON, nullable=True)
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description: Mapped[str | None] = mapped_column(Text, nullable=True)
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attachment_count: Mapped[int | None] = mapped_column(Integer, nullable=True)
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downloaded_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), nullable=False, server_default=func.now()
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)
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