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81 lines
3.6 KiB
Python
81 lines
3.6 KiB
Python
"""Maintenance tracking models."""
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from datetime import datetime
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from sqlalchemy import Boolean, DateTime, Float, ForeignKey, String, Text, 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 MaintenanceType(Base):
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"""Defines a type of maintenance task with default interval."""
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__tablename__ = "maintenance_types"
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id: Mapped[int] = mapped_column(primary_key=True)
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name: Mapped[str] = mapped_column(String(100))
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description: Mapped[str | None] = mapped_column(Text)
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default_interval_hours: Mapped[float] = mapped_column(Float, default=100.0)
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# Interval type: "hours" (print hours) or "days" (calendar days)
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interval_type: Mapped[str] = mapped_column(String(20), default="hours")
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icon: Mapped[str | None] = mapped_column(String(50)) # Icon name for UI
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wiki_url: Mapped[str | None] = mapped_column(String(500)) # Documentation link
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is_system: Mapped[bool] = mapped_column(Boolean, default=False) # Pre-defined vs custom
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is_deleted: Mapped[bool] = mapped_column(Boolean, default=False) # Hidden/removed type
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created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
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# Relationships
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printer_maintenance: Mapped[list["PrinterMaintenance"]] = relationship(
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back_populates="maintenance_type", cascade="all, delete-orphan"
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)
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class PrinterMaintenance(Base):
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"""Tracks maintenance status for a specific printer."""
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__tablename__ = "printer_maintenance"
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id: Mapped[int] = mapped_column(primary_key=True)
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printer_id: Mapped[int] = mapped_column(ForeignKey("printers.id", ondelete="CASCADE"))
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maintenance_type_id: Mapped[int] = mapped_column(ForeignKey("maintenance_types.id", ondelete="CASCADE"))
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# Custom interval for this printer (overrides default if set)
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custom_interval_hours: Mapped[float | None] = mapped_column(Float, nullable=True)
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# Custom interval type for this printer (overrides default if set)
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custom_interval_type: Mapped[str | None] = mapped_column(String(20), nullable=True)
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# Tracking
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enabled: Mapped[bool] = mapped_column(Boolean, default=True)
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last_performed_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
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last_performed_hours: Mapped[float] = mapped_column(Float, default=0.0) # Hours at last reset
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created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
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updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now())
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# Relationships
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printer: Mapped["Printer"] = relationship(back_populates="maintenance_items")
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maintenance_type: Mapped["MaintenanceType"] = relationship(back_populates="printer_maintenance")
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history: Mapped[list["MaintenanceHistory"]] = relationship(
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back_populates="printer_maintenance", cascade="all, delete-orphan"
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)
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class MaintenanceHistory(Base):
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"""Log of maintenance actions performed."""
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__tablename__ = "maintenance_history"
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id: Mapped[int] = mapped_column(primary_key=True)
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printer_maintenance_id: Mapped[int] = mapped_column(ForeignKey("printer_maintenance.id", ondelete="CASCADE"))
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performed_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
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hours_at_maintenance: Mapped[float] = mapped_column(Float, default=0.0)
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notes: Mapped[str | None] = mapped_column(Text, nullable=True)
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# Relationships
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printer_maintenance: Mapped["PrinterMaintenance"] = relationship(back_populates="history")
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# Import at end to avoid circular imports
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from backend.app.models.printer import Printer # noqa: E402
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