Partidas BOM y partes para SCAI

backend/api/v1/modules/a24/inv/bom/models.py

@@ -0,0 +1,56 @@
+"""
+Modelo ORM para la lista de materiales (BOM) de una parte - Anexo 24
+"""
+
+from typing import TYPE_CHECKING, Optional
+from decimal import Decimal
+from api.v1.common.base_models import TenantScopedMixin, TimestampMixin
+from core.database import Base
+from sqlalchemy import (
+    Integer,
+    Numeric,
+    String,
+    PrimaryKeyConstraint,
+    ForeignKeyConstraint
+)
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+if TYPE_CHECKING:
+    from api.v1.modules.a76.parts.models import Part
+
+
+class BillOfMaterial(Base, TenantScopedMixin, TimestampMixin):
+    """
+    Tabla inv_bom: Lista de materiales para una parte.
+    """
+    __tablename__ = "inv_bom"
+    __table_args__ = (
+        PrimaryKeyConstraint("id", name="inv_bom_pkey"),
+        ForeignKeyConstraint(
+            ["parent_part_id"], ["a76.parts.id"], name="fk_inv_bom_parent"
+        ),
+        ForeignKeyConstraint(
+            ["component_part_id"], ["a76.parts.id"], name="fk_inv_bom_component"
+        ),
+        {"schema": "a24", "extend_existing": True},
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    parent_part_id: Mapped[int] = mapped_column(Integer, nullable=False)
+    component_part_id: Mapped[int] = mapped_column(Integer, nullable=False)
+    quantity: Mapped[Decimal] = mapped_column(Numeric(19, 8), default=Decimal('1.0'))
+    
+    # Nuevos campos Legacy
+    uom_code: Mapped[str] = mapped_column(String(5), nullable=False)
+    procedure_type: Mapped[Optional[str]] = mapped_column(String(10), nullable=True) # TEMPORAL, DEFINITIVA, CTM
+    is_percentage: Mapped[bool] = mapped_column(default=True)
+    raw_material: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
+    waste: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
+    merma: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
+
+    # Relaciones
+    parent_part: Mapped["Part"] = relationship("Part", foreign_keys=[parent_part_id], back_populates="bom_items")
+    component_part: Mapped["Part"] = relationship("Part", foreign_keys=[component_part_id])
+
+    def __repr__(self) -> str:
+        return f"<BillOfMaterial(id={self.id}, parent={self.parent_part_id}, component={self.component_part_id}, uom={self.uom_code})>"