feat: Product module events (#7598)

WIP, not ready to review

**what**
- add events
- integration tests of emitted events
- remove integration tests on auto generated services in favor of module method integration tests

packages/modules/product/src/services/product-module-service.ts

@@ -22,6 +22,7 @@ import { ProductCategoryService, ProductService } from "@services"
 
 import {
   arrayDifference,
+  EmitEvents,
   InjectManager,
   InjectTransactionManager,
   isPresent,
@@ -51,6 +52,7 @@ import {
   UpdateTypeInput,
 } from "../types"
 import { entityNameToLinkableKeysMap, joinerConfig } from "./../joiner-config"
+import { eventBuilders } from "../utils"
 
 type InjectedDependencies = {
   baseRepository: DAL.RepositoryService
@@ -128,7 +130,6 @@ export default class ProductModuleService<
   protected readonly productService_: ProductService<TProduct>
   // eslint-disable-next-line max-len
   protected readonly productVariantService_: ModulesSdkTypes.InternalModuleService<TProductVariant>
-
   // eslint-disable-next-line max-len
   protected readonly productCategoryService_: ProductCategoryService<TProductCategory>
   // eslint-disable-next-line max-len
@@ -193,6 +194,7 @@ export default class ProductModuleService<
   ): Promise<ProductTypes.ProductVariantDTO>
 
   @InjectManager("baseRepository_")
+  @EmitEvents()
   async createVariants(
     data:
       | ProductTypes.CreateProductVariantDTO[]
@@ -220,7 +222,7 @@ export default class ProductModuleService<
     if (data.some((v) => !v.product_id)) {
       throw new MedusaError(
         MedusaError.Types.INVALID_DATA,
-        "Tried to create variants without specifying a product_id"
+        "Unable to create variants without specifying a product_id"
       )
     }
 
@@ -238,10 +240,17 @@ export default class ProductModuleService<
     const productVariantsWithOptions =
       ProductModuleService.assignOptionsToVariants(data, productOptions)
 
-    return await this.productVariantService_.create(
+    const createdVariants = await this.productVariantService_.create(
       productVariantsWithOptions,
       sharedContext
     )
+
+    eventBuilders.createdProductVariant({
+      data: createdVariants,
+      sharedContext,
+    })
+
+    return createdVariants
   }
 
   async upsertVariants(
@@ -254,6 +263,7 @@ export default class ProductModuleService<
   ): Promise<ProductTypes.ProductVariantDTO>
 
   @InjectTransactionManager("baseRepository_")
+  @EmitEvents()
   async upsertVariants(
     data:
       | ProductTypes.UpsertProductVariantDTO[]
@@ -300,6 +310,7 @@ export default class ProductModuleService<
   ): Promise<ProductTypes.ProductVariantDTO[]>
 
   @InjectManager("baseRepository_")
+  @EmitEvents()
   async updateVariants(
     idOrSelector: string | ProductTypes.FilterableProductVariantProps,
     data: ProductTypes.UpdateProductVariantDTO,
@@ -373,7 +384,7 @@ export default class ProductModuleService<
       sharedContext
     )
 
-    const { entities: productVariants } =
+    const { entities: productVariants, performedActions } =
       await this.productVariantService_.upsertWithReplace(
         ProductModuleService.assignOptionsToVariants(
           variantsWithProductId,
@@ -385,6 +396,19 @@ export default class ProductModuleService<
         sharedContext
       )
 
+    eventBuilders.createdProductVariant({
+      data: performedActions.created[ProductVariant.name] ?? [],
+      sharedContext,
+    })
+    eventBuilders.updatedProductVariant({
+      data: performedActions.updated[ProductVariant.name] ?? [],
+      sharedContext,
+    })
+    eventBuilders.deletedProductVariant({
+      data: performedActions.deleted[ProductVariant.name] ?? [],
+      sharedContext,
+    })
+
     return productVariants
   }