88 lines
3.8 KiB
Python
88 lines
3.8 KiB
Python
from __future__ import annotations
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from datetime import datetime
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from decimal import Decimal
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from enum import Enum
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from sqlalchemy import (
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String,
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Integer,
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DateTime,
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Text,
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ForeignKey,
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UniqueConstraint,
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Boolean,
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Numeric,
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Enum as SQLEnum,
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)
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from sqlalchemy.orm import Mapped, mapped_column
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from adapters.db.session import Base
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class ProductItemType(str, Enum):
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PRODUCT = "کالا"
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SERVICE = "خدمت"
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class Product(Base):
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"""
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موجودیت کالا/خدمت در سطح هر کسب‌وکار
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- کد دستی/اتوماتیک یکتا در هر کسب‌وکار
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- پشتیبانی از مالیات فروش/خرید، کنترل موجودی و واحدها
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- اتصال به دسته‌بندی‌ها و ویژگی‌ها (ویژگی‌ها از طریق جدول لینک)
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"""
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__tablename__ = "products"
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__table_args__ = (
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UniqueConstraint("business_id", "code", name="uq_products_business_code"),
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)
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id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
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business_id: Mapped[int] = mapped_column(Integer, ForeignKey("businesses.id", ondelete="CASCADE"), nullable=False, index=True)
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item_type: Mapped[ProductItemType] = mapped_column(
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SQLEnum(ProductItemType, values_callable=lambda obj: [e.value for e in obj], name="product_item_type_enum"),
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nullable=False,
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default=ProductItemType.PRODUCT,
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comment="نوع آیتم (کالا/خدمت)",
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)
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code: Mapped[str] = mapped_column(String(64), nullable=False, comment="کد یکتا در هر کسب‌وکار")
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name: Mapped[str] = mapped_column(String(255), nullable=False, index=True)
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description: Mapped[str | None] = mapped_column(Text, nullable=True)
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# دسته‌بندی (اختیاری)
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category_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("categories.id", ondelete="SET NULL"), nullable=True, index=True)
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# واحدها
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main_unit_id: Mapped[int | None] = mapped_column(Integer, nullable=True, index=True)
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secondary_unit_id: Mapped[int | None] = mapped_column(Integer, nullable=True, index=True)
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unit_conversion_factor: Mapped[Decimal | None] = mapped_column(Numeric(18, 6), nullable=True)
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# قیمت‌های پایه (نمایشی)
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base_sales_price: Mapped[Decimal | None] = mapped_column(Numeric(18, 2), nullable=True)
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base_sales_note: Mapped[str | None] = mapped_column(Text, nullable=True)
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base_purchase_price: Mapped[Decimal | None] = mapped_column(Numeric(18, 2), nullable=True)
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base_purchase_note: Mapped[str | None] = mapped_column(Text, nullable=True)
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# کنترل موجودی
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track_inventory: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
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reorder_point: Mapped[int | None] = mapped_column(Integer, nullable=True)
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min_order_qty: Mapped[int | None] = mapped_column(Integer, nullable=True)
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lead_time_days: Mapped[int | None] = mapped_column(Integer, nullable=True)
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# مالیات
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is_sales_taxable: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
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is_purchase_taxable: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
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sales_tax_rate: Mapped[Decimal | None] = mapped_column(Numeric(5, 2), nullable=True)
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purchase_tax_rate: Mapped[Decimal | None] = mapped_column(Numeric(5, 2), nullable=True)
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tax_type_id: Mapped[int | None] = mapped_column(Integer, nullable=True, index=True)
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tax_code: Mapped[str | None] = mapped_column(String(100), nullable=True)
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tax_unit_id: Mapped[int | None] = mapped_column(Integer, nullable=True, index=True)
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created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
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updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
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