feat: deal product services

models/service.py

@@ -1,6 +1,7 @@
-from sqlalchemy import Column, Integer, String, ForeignKey, Double
+from sqlalchemy import Column, Integer, String, ForeignKey, Double, asc
 from sqlalchemy.orm import relationship, mapped_column, Mapped
 
+import enums.service
 from models import BaseModel
 
 
@@ -10,9 +11,26 @@ class Service(BaseModel):
     name = Column(String, nullable=False, comment='Название услуги')
 
     category_id = Column(Integer, ForeignKey('service_categories.id'), nullable=False, comment='ID категории услуги')
-    category = relationship('ServiceCategory')
+    category = relationship('ServiceCategory', lazy='joined')
 
     price = Column(Double, nullable=False, comment='Стоимость услуги')
+    service_type = Column(Integer,
+                          server_default=f'{enums.service.ServiceType.DEAL_SERVICE}',
+                          nullable=False,
+                          comment='Тип услуги')
+
+    price_ranges = relationship('ServicePriceRange', back_populates='service', lazy='selectin',
+                                order_by="asc(ServicePriceRange.from_quantity)")
+
+
+class ServicePriceRange(BaseModel):
+    __tablename__ = 'service_price_ranges'
+    id = Column(Integer, autoincrement=True, primary_key=True, index=True)
+    service_id = Column(Integer, ForeignKey('services.id'), nullable=False, comment='ID услуги')
+    service = relationship('Service', back_populates='price_ranges')
+    from_quantity = Column(Integer, nullable=False, comment='От количества')
+    to_quantity = Column(Integer, nullable=False, comment='До количества')
+    price = Column(Double, nullable=False, comment='Цена')
 
 
 class ServiceCategory(BaseModel):