crappy

services/product.py

@@ -0,0 +1,37 @@
+from fastapi import HTTPException
+from sqlalchemy import select
+
+from models.product import Product
+from schemas.base import PaginationSchema
+from services.base import BaseService
+from schemas.product import *
+
+
+class ProductService(BaseService):
+    async def create(self, request: ProductCreateRequest) -> ProductCreateResponse:
+        existing_product_query = await self.session.execute(
+            select(Product)
+            .where(Product.client_id == request.client_id,
+                   Product.article == request.article)
+        )
+        existing_product = existing_product_query.first()
+        if existing_product:
+            raise HTTPException(status_code=403, detail="Product already exists")
+        product = Product(**request.dict())
+        self.session.add(product)
+        await self.session.commit()
+        return ProductCreateResponse(product_id=product.id)
+
+    async def get_by_client_id(self, client_id: int, pagination: PaginationSchema) -> ProductGetResponse:
+        query = await self.session.execute(
+            select(Product)
+            .where(Product.client_id == client_id)
+            .offset(pagination.page * pagination.items_per_page)
+            .limit(pagination.items_per_page)
+        )
+        products: list[ProductSchema] = []
+        for product in query.scalars().all():
+            products.append(
+                ProductSchema.model_validate(product)
+            )
+        return ProductGetResponse(products=products)