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35 lines
1.5 KiB
Python
35 lines
1.5 KiB
Python
from datetime import datetime
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from sqlalchemy import DateTime, ForeignKey, Integer, String, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from backend.app.core.database import Base
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class SpoolAssignment(Base):
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"""Assignment of a spool to a specific AMS slot on a printer."""
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__tablename__ = "spool_assignment"
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id: Mapped[int] = mapped_column(primary_key=True)
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spool_id: Mapped[int] = mapped_column(ForeignKey("spool.id", ondelete="CASCADE"))
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printer_id: Mapped[int] = mapped_column(ForeignKey("printers.id", ondelete="CASCADE"))
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ams_id: Mapped[int] = mapped_column(Integer) # 0-3, 128+ (HT), 254/255 (ext)
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tray_id: Mapped[int] = mapped_column(Integer) # 0-3
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fingerprint_color: Mapped[str | None] = mapped_column(String(8)) # tray_color snapshot
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fingerprint_type: Mapped[str | None] = mapped_column(String(50)) # tray_type snapshot
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created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
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spool: Mapped["Spool"] = relationship(back_populates="assignments")
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printer: Mapped["Printer"] = relationship()
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__table_args__ = (UniqueConstraint("printer_id", "ams_id", "tray_id"),)
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@property
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def printer_name(self) -> str | None:
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"""Get printer name from loaded relationship."""
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return self.printer.name if self.printer else None
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from backend.app.models.printer import Printer # noqa: E402, F401
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from backend.app.models.spool import Spool # noqa: E402, F401
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