Feat: Bulk add customers to customer group (#1095)

* fix babel transform-runtime regenerator required for migrations

* add customer group model

* add migration for customer group

* add customer group model export

* add customer group repository

* add customer group service

* add CustomerGroupRepository to "withTransaction" in CustomerGroupService

* remove unnecessary argument to runtime plugin

* service export ordering

* add create customer group endpoint

* add customergroup to route index in admin

* add customer group service

* add customer groups test

* cleanup

* add customers batch initial

* batch creation of customer groups

* integration testing batch creation

* integration tests

* chaining existing customers creation in repo

* remove commented test

* update unit tests to reflect change in idempotent behavior

* ensure that exceptions are expected

* update idempotency behavior

* update formatting

* update format

* Update packages/medusa/src/repositories/customer-group.ts

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

* pr feedback

* add In import

* add seperate model dto

* add integration test

* error handling in repository

* remove unused import

* jsdoc

* Update packages/medusa/src/api/routes/admin/customer-groups/add-customers-batch.ts

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

* Update packages/medusa/src/api/routes/admin/customer-groups/add-customers-batch.ts

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

* pr review comments

* rename variable

* fix: adds atomic phase clean up callback

* fix: call error handler in new transaction block too

* restore

* error handling

* fix: error handler in no isolation case

* add integration test for missing group on update

* final adjustments to test

* fix pr feedback

* cleanup core for pr

* remove console.log

* remove customergroupservice test from customers

* Apply suggestions from code review

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

* add end bracket to customer tests

* remove comments

* change model decorator

* fix integration test merge

* onDelete cascade instead of cascade:true

* remove verbose flag

* fix: dedupe type

* add save to customer groups

* customer model delete cascade

* add await to asyncronous save operations

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

integration-tests/api/__tests__/admin/customer-groups.js

@@ -130,7 +130,7 @@ describe("/admin/customer-groups", () => {
         .catch((error) => {
           expect(error.response.data.type).toEqual("not_found")
           expect(error.response.data.message).toEqual(
-            `CustomerGroup with ${id} was not found`
+            `CustomerGroup with id ${id} was not found`
           )
         })
     })
@@ -193,6 +193,182 @@ describe("/admin/customer-groups", () => {
     })
   })
 
+  describe("POST /admin/customer-groups/{id}/customers/batch", () => {
+    beforeEach(async () => {
+      try {
+        await adminSeeder(dbConnection)
+        await customerSeeder(dbConnection)
+      } catch (err) {
+        console.log(err)
+        throw err
+      }
+    })
+
+    afterEach(async () => {
+      const db = useDb()
+      await db.teardown()
+    })
+
+    it("adds multiple customers to a group", async () => {
+      const api = useApi()
+
+      const payload = {
+        customer_ids: [{ id: "test-customer-1" }, { id: "test-customer-2" }],
+      }
+
+      const batchAddResponse = await api.post(
+        "/admin/customer-groups/customer-group-1/customers/batch",
+        payload,
+        {
+          headers: {
+            Authorization: "Bearer test_token",
+          },
+        }
+      )
+
+      expect(batchAddResponse.status).toEqual(200)
+      expect(batchAddResponse.data.customer_group).toEqual(
+        expect.objectContaining({
+          name: "vip-customers",
+        })
+      )
+
+      const getCustomerResponse = await api.get(
+        "/admin/customers?expand=groups",
+        {
+          headers: { Authorization: "Bearer test_token" },
+        }
+      )
+
+      expect(getCustomerResponse.data.customers).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            id: "test-customer-1",
+            groups: [
+              expect.objectContaining({
+                name: "vip-customers",
+                id: "customer-group-1",
+              }),
+            ],
+          }),
+          expect.objectContaining({
+            id: "test-customer-2",
+            groups: [
+              expect.objectContaining({
+                name: "vip-customers",
+                id: "customer-group-1",
+              }),
+            ],
+          }),
+        ])
+      )
+    })
+
+    it("presents a descriptive error when presented with a non-existing group", async () => {
+      expect.assertions(2)
+
+      const api = useApi()
+
+      const payload = {
+        customer_ids: [{ id: "test-customer-1" }, { id: "test-customer-2" }],
+      }
+
+      await api
+        .post(
+          "/admin/customer-groups/non-existing-customer-group-1/customers/batch",
+          payload,
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          expect(err.response.data.type).toEqual("not_found")
+          expect(err.response.data.message).toEqual(
+            "CustomerGroup with id non-existing-customer-group-1 was not found"
+          )
+        })
+    })
+
+    it("adds customers to a group idempotently", async () => {
+      expect.assertions(3)
+
+      const api = useApi()
+
+      // add customer-1 to the customer group
+      const payload_1 = {
+        customer_ids: [{ id: "test-customer-1" }],
+      }
+
+      await api
+        .post(
+          "/admin/customer-groups/customer-group-1/customers/batch",
+          payload_1,
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => console.log(err))
+
+      // re-adding customer-1 to the customer group along with new addintion:
+      // customer-2 and some non-existing customers should cause the request to fail
+      const payload_2 = {
+        customer_ids: [
+          { id: "test-customer-1" },
+          { id: "test-customer-27" },
+          { id: "test-customer-28" },
+          { id: "test-customer-2" },
+        ],
+      }
+
+      await api
+        .post(
+          "/admin/customer-groups/customer-group-1/customers/batch",
+          payload_2,
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          expect(err.response.data.type).toEqual("not_found")
+          expect(err.response.data.message).toEqual(
+            'The following customer ids do not exist: "test-customer-27, test-customer-28"'
+          )
+        })
+
+      // check that customer-1 is only added once and that customer-2 is added correctly
+      const getCustomerResponse = await api.get(
+        "/admin/customers?expand=groups",
+        {
+          headers: { Authorization: "Bearer test_token" },
+        }
+      )
+
+      expect(getCustomerResponse.data.customers).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            id: "test-customer-1",
+            groups: [
+              expect.objectContaining({
+                name: "vip-customers",
+                id: "customer-group-1",
+              }),
+            ],
+          }),
+          expect.objectContaining({
+            id: "test-customer-2",
+            groups: [],
+          }),
+        ])
+      )
+    })
+  })
+
   describe("POST /admin/customer-groups/:id", () => {
     beforeEach(async () => {
       try {
@@ -336,8 +512,6 @@ describe("/admin/customer-groups", () => {
     })
 
     it("throws error when a customer group doesn't exist", async () => {
-      expect.assertions(3)
-
       const api = useApi()
 
       const id = "test-group-000"
@@ -352,7 +526,7 @@ describe("/admin/customer-groups", () => {
           expect(err.response.status).toEqual(404)
           expect(err.response.data.type).toEqual("not_found")
           expect(err.response.data.message).toEqual(
-            `CustomerGroup with ${id} was not found`
+            `CustomerGroup with id ${id} was not found`
           )
         })
     })

integration-tests/api/__tests__/admin/customer.js

@@ -229,6 +229,32 @@ describe("/admin/customers", () => {
       )
     })
 
+    it("fails when adding a customer group which doesn't exist", async () => {
+      expect.assertions(3)
+      // Try adding a non existing group
+      const api = useApi()
+
+      await api
+        .post(
+          "/admin/customers/test-customer-3?expand=groups",
+          {
+            groups: [{ id: "fake-group-0" }],
+          },
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((error) => {
+          expect(error.response.status).toEqual(404)
+          expect(error.response.data.type).toEqual("not_found")
+          expect(error.response.data.message).toEqual(
+            "Customer_group with customer_group_id fake-group-0 does not exist."
+          )
+        })
+    })
+
     it("Correctly updates customer groups", async () => {
       const api = useApi()
       let response = await api
@@ -254,32 +280,6 @@ describe("/admin/customers", () => {
         ])
       )
 
-      // Try adding a non existing group
-
-      response = await api
-        .post(
-          "/admin/customers/test-customer-3?expand=groups",
-          {
-            groups: [{ id: "test-group-4" }, { id: "fake-group-0" }],
-          },
-          {
-            headers: {
-              Authorization: "Bearer test_token",
-            },
-          }
-        )
-        .catch((err) => {
-          console.log(err)
-        })
-
-      expect(response.status).toEqual(200)
-      expect(response.data.customer.groups.length).toEqual(1)
-      expect(response.data.customer.groups).toEqual(
-        expect.arrayContaining([
-          expect.objectContaining({ id: "test-group-4", name: "test-group-4" }),
-        ])
-      )
-
       // Delete all groups
 
       response = await api

integration-tests/api/__tests__/admin/discount.js

@@ -882,8 +882,8 @@ describe("/admin/discounts", () => {
           }
         )
       } catch (error) {
-        expect(error.response.data.message).toMatch(
+        expect(error.response.data.message).toEqual(
-          /duplicate key value violates unique constraint/i
+          "Discount with code TESTING already exists."
         )
       }
     })

integration-tests/api/__tests__/admin/product.js

@@ -1627,7 +1627,7 @@ describe("/admin/products", () => {
         })
       } catch (error) {
         expect(error.response.data.message).toMatch(
-          /duplicate key value violates unique constraint/i
+          "Product with handle test-product already exists."
         )
       }
     })
@@ -1699,7 +1699,7 @@ describe("/admin/products", () => {
         })
       } catch (error) {
         expect(error.response.data.message).toMatch(
-          /duplicate key value violates unique constraint/i
+          "Product_collection with handle test-collection already exists."
         )
       }
     })

integration-tests/api/__tests__/taxes/admin-tax-rates.js

@@ -28,7 +28,7 @@ describe("/admin/tax-rates", () => {
     const cwd = path.resolve(path.join(__dirname, "..", ".."))
     try {
       dbConnection = await initDb({ cwd })
-      medusaProcess = await setupServer({ cwd, verbose: true })
+      medusaProcess = await setupServer({ cwd })
     } catch (error) {
       console.log(error)
     }

integration-tests/api/helpers/customer-seeder.js

@@ -40,6 +40,7 @@ module.exports = async (connection, data = {}) => {
     id: "test-customer-delete-cg",
     email: "test-deletetion-cg@email.com",
   })
+  await manager.save(deletionCustomer)
 
   await manager.insert(CustomerGroup, {
     id: "customer-group-1",
@@ -66,26 +67,31 @@ module.exports = async (connection, data = {}) => {
     id: "test-customer-5",
     email: "test5@email.com",
   })
+  await manager.save(customer5)
 
   const customer6 = manager.create(Customer, {
     id: "test-customer-6",
     email: "test6@email.com",
   })
+  await manager.save(customer6)
 
   const customer7 = manager.create(Customer, {
     id: "test-customer-7",
     email: "test7@email.com",
   })
+  await manager.save(customer7)
 
   const c_group_5 = manager.create(CustomerGroup, {
     id: "test-group-5",
     name: "test-group-5",
   })
+  await manager.save(c_group_5)
 
   const c_group_6 = manager.create(CustomerGroup, {
     id: "test-group-6",
     name: "test-group-6",
   })
+  await manager.save(c_group_6)
 
   customer5.groups = [c_group_5]
   await manager.save(customer5)
@@ -100,6 +106,7 @@ module.exports = async (connection, data = {}) => {
     id: "test-group-delete",
     name: "test-group-delete",
   })
+  await manager.save(c_group_delete)
 
   deletionCustomer.groups = [c_group_delete]
   await manager.save(deletionCustomer)

packages/medusa/src/api/middlewares/error-handler.js

@@ -46,7 +46,13 @@ export default () => {
         statusCode = 500
         errObj.code = API_ERROR
         break
+      case MedusaError.Types.UNEXPECTED_STATE:
+      case MedusaError.Types.INVALID_ARGUMENT:
+        break
       default:
+        errObj.code = "unknown_error"
+        errObj.message = "An unknown error occurred."
+        errObj.type = "unknown_error"
         break
     }
 

packages/medusa/src/api/routes/admin/collections/__tests__/add-products.js

@@ -33,9 +33,10 @@ describe("POST /admin/collections/:id/products/batch", () => {
 
     it("product collection service update", () => {
       expect(ProductCollectionServiceMock.addProducts).toHaveBeenCalledTimes(1)
-      expect(
+      expect(ProductCollectionServiceMock.addProducts).toHaveBeenCalledWith(
-        ProductCollectionServiceMock.addProducts
+        IdMap.getId("col"),
-      ).toHaveBeenCalledWith(IdMap.getId("col"), ["prod_1", "prod_2"])
+        ["prod_1", "prod_2"]
+      )
     })
   })
 
@@ -60,7 +61,9 @@ describe("POST /admin/collections/:id/products/batch", () => {
     })
 
     it("throws error", () => {
-      expect(subject.body.message).toBe("Product collection not found")
+      expect(subject.body.message).toBe(
+        "Product collection with id: null was not found"
+      )
     })
   })
 

packages/medusa/src/api/routes/admin/customer-groups/add-customers-batch.ts

@@ -0,0 +1,51 @@
+import { Type } from "class-transformer"
+import { ValidateNested } from "class-validator"
+import { CustomerGroupService } from "../../../../services"
+import { CustomerGroupsBatchCustomer } from "../../../../types/customer-groups"
+import { validator } from "../../../../utils/validator"
+
+/**
+ * @oas [post] /customer-groups/{id}/customers/batch
+ * operationId: "PostCustomerGroupsGroupCustomersBatch"
+ * summary: "Add a list of customers to a customer group "
+ * description: "Adds a list of customers, represented by id's, to a customer group."
+ * x-authenticated: true
+ * parameters:
+ *   - (path) id=* {string} The id of the customer group.
+ *   - (body) customers=* {{id: string }[]} ids of the customers to add
+ * tags:
+ *   - CustomerGroup
+ * responses:
+ *   200:
+ *     description: OK
+ *     content:
+ *       application/json:
+ *         schema:
+ *           properties:
+ *             customerGroup:
+ *               $ref: "#/components/schemas/customergroup"
+ */
+
+export default async (req, res) => {
+  const { id } = req.params
+  const validated = await validator(
+    AdminPostCustomerGroupsGroupCustomersBatchReq,
+    req.body
+  )
+
+  const customerGroupService: CustomerGroupService = req.scope.resolve(
+    "customerGroupService"
+  )
+
+  const customer_group = await customerGroupService.addCustomers(
+    id,
+    validated.customer_ids.map(({ id }) => id)
+  )
+  res.status(200).json({ customer_group })
+}
+
+export class AdminPostCustomerGroupsGroupCustomersBatchReq {
+  @ValidateNested({ each: true })
+  @Type(() => CustomerGroupsBatchCustomer)
+  customer_ids: CustomerGroupsBatchCustomer[]
+}

packages/medusa/src/api/routes/admin/customer-groups/index.ts

@@ -10,6 +10,10 @@ export default (app) => {
 
   route.get("/:id", middlewares.wrap(require("./get-customer-group").default))
   route.post("/", middlewares.wrap(require("./create-customer-group").default))
+  route.post(
+    "/:id/customers/batch",
+    middlewares.wrap(require("./add-customers-batch").default)
+  )
   route.delete(
     "/:id/customers/batch",
     middlewares.wrap(require("./delete-customers-batch").default)

packages/medusa/src/models/customer.ts

@@ -69,7 +69,9 @@ export class Customer {
       referencedColumnName: "id",
     },
   })
-  @ManyToMany(() => CustomerGroup, (cg) => cg.customers, { cascade: true })
+  @ManyToMany(() => CustomerGroup, (cg) => cg.customers, {
+    onDelete: "CASCADE",
+  })
   groups: CustomerGroup[]
 
   @CreateDateColumn({ type: resolveDbType("timestamptz") })

packages/medusa/src/repositories/customer-group.ts

@@ -3,6 +3,27 @@ import { CustomerGroup } from "../models/customer-group"
 
 @EntityRepository(CustomerGroup)
 export class CustomerGroupRepository extends Repository<CustomerGroup> {
+  async addCustomers(
+    groupId: string,
+    customerIds: string[]
+  ): Promise<CustomerGroup> {
+    const customerGroup = await this.findOne(groupId)
+
+    await this.createQueryBuilder()
+      .insert()
+      .into("customer_group_customers")
+      .values(
+        customerIds.map((id) => ({
+          customer_id: id,
+          customer_group_id: groupId,
+        }))
+      )
+      .orIgnore()
+      .execute()
+
+    return customerGroup as CustomerGroup
+  }
+  
   async removeCustomers(
     groupId: string,
     customerIds: string[]

packages/medusa/src/services/__mocks__/product-collection.js

@@ -1,3 +1,4 @@
+import { MedusaError } from "medusa-core-utils"
 import { IdMap } from "medusa-test-utils"
 
 export const ProductCollectionServiceMock = {
@@ -23,7 +24,10 @@ export const ProductCollectionServiceMock = {
         products: product_ids.map((i) => ({ id: i })),
       })
     }
-    throw new Error("Product collection not found")
+    throw new MedusaError(
+      MedusaError.Types.NOT_FOUND,
+      `Product collection with id: ${id} was not found`
+    )
   }),
   removeProducts: jest.fn().mockReturnValue(Promise.resolve()),
   list: jest.fn().mockImplementation((data) => {

packages/medusa/src/services/__tests__/customer.js

@@ -282,18 +282,6 @@ describe("CustomerService", () => {
       jest.clearAllMocks()
     })
 
-    it("calls `customerGroupService.list` if `groups` prop is received as a param", async () => {
-      await customerService.update(IdMap.getId("ironman"), {
-        groups: [{ id: "group-id" }],
-      })
-
-      expect(customerGroupService.list).toBeCalledTimes(1)
-      expect(customerGroupService.list).toBeCalledWith({ id: ["group-id"] })
-
-      expect(customerRepository.save).toBeCalledTimes(1)
-    })
-  })
-
     describe("updateAddress", () => {
       const addressRepository = MockRepository({
         findOne: (query) => {
@@ -417,3 +405,4 @@ describe("CustomerService", () => {
       })
     })
   })
+})

packages/medusa/src/services/customer-group.ts

@@ -1,9 +1,11 @@
 import { MedusaError } from "medusa-core-utils"
 import { BaseService } from "medusa-interfaces"
 import { DeepPartial, EntityManager } from "typeorm"
+import { CustomerService } from "."
 import { CustomerGroup } from ".."
 import { CustomerGroupRepository } from "../repositories/customer-group"
 import { FindConfig } from "../types/common"
+import { formatException } from "../utils/exception-formatter"
 import {
   CustomerGroupUpdate,
   FilterableCustomerGroupProps,
@@ -12,21 +14,33 @@ import {
 type CustomerGroupConstructorProps = {
   manager: EntityManager
   customerGroupRepository: typeof CustomerGroupRepository
+  customerService: CustomerService
 }
+
+/**
+ * Provides layer to manipulate discounts.
+ * @implements {BaseService}
+ */
 class CustomerGroupService extends BaseService {
   private manager_: EntityManager
 
   private customerGroupRepository_: typeof CustomerGroupRepository
 
+  private customerService_: CustomerService
+
   constructor({
     manager,
     customerGroupRepository,
+    customerService,
   }: CustomerGroupConstructorProps) {
     super()
 
     this.manager_ = manager
 
     this.customerGroupRepository_ = customerGroupRepository
+
+    /** @private @const {CustomerGroupService} */
+    this.customerService_ = customerService
   }
 
   withTransaction(transactionManager: EntityManager): CustomerGroupService {
@@ -37,6 +51,7 @@ class CustomerGroupService extends BaseService {
     const cloned = new CustomerGroupService({
       manager: transactionManager,
       customerGroupRepository: this.customerGroupRepository_,
+      customerService: this.customerService_,
     })
 
     cloned.transactionManager_ = transactionManager
@@ -56,7 +71,7 @@ class CustomerGroupService extends BaseService {
     if (!customerGroup) {
       throw new MedusaError(
         MedusaError.Types.NOT_FOUND,
-        `CustomerGroup with ${id} was not found`
+        `CustomerGroup with id ${id} was not found`
       )
     }
 
@@ -89,11 +104,60 @@ class CustomerGroupService extends BaseService {
     })
   }
 
+  /**
+   * Add a batch of customers to a customer group at once
+   * @param {string} id id of the customer group to add customers to
+   * @param {string[]} customerIds customer id's to add to the group
+   * @return {Promise<CustomerGroup>} the customer group after insertion
+   */
+  async addCustomers(
+    id: string,
+    customerIds: string | string[]
+  ): Promise<CustomerGroup> {
+    let ids: string[]
+    if (typeof customerIds === "string") {
+      ids = [customerIds]
+    } else {
+      ids = customerIds
+    }
+
+    return this.atomicPhase_(
+      async (manager) => {
+        const cgRepo: CustomerGroupRepository = manager.getCustomRepository(
+          this.customerGroupRepository_
+        )
+        return await cgRepo.addCustomers(id, ids)
+      },
+      async (error) => {
+        if (error.code === "23503") {
+          await this.retrieve(id)
+
+          const existingCustomers = await this.customerService_.list({
+            id: ids,
+          })
+
+          const nonExistingCustomers = ids.filter(
+            (cId) => existingCustomers.findIndex((el) => el.id === cId) === -1
+          )
+
+          throw new MedusaError(
+            MedusaError.Types.NOT_FOUND,
+            `The following customer ids do not exist: ${JSON.stringify(
+              nonExistingCustomers.join(", ")
+            )}`
+          )
+        }
+        throw formatException(error)
+      }
+    )
+  }
+
   /**
    * Update a customer group.
    *
    * @param {string} customerGroupId - id of the customer group
    * @param {CustomerGroupUpdate} update - customer group partial data
+   * @returns resulting customer group
    */
   async update(
     customerGroupId: string,

packages/medusa/src/services/customer.js

@@ -4,6 +4,7 @@ import { MedusaError, Validator } from "medusa-core-utils"
 import { BaseService } from "medusa-interfaces"
 import Scrypt from "scrypt-kdf"
 import { Brackets, ILike } from "typeorm"
+import { formatException } from "../utils/exception-formatter"
 
 /**
  * Provides layer to manipulate customers.
@@ -21,7 +22,6 @@ class CustomerService extends BaseService {
     customerRepository,
     eventBusService,
     addressRepository,
-    customerGroupService,
   }) {
     super()
 
@@ -36,8 +36,6 @@ class CustomerService extends BaseService {
 
     /** @private @const {AddressRepository} */
     this.addressRepository_ = addressRepository
-
-    this.customerGroupService_ = customerGroupService
   }
 
   withTransaction(transactionManager) {
@@ -63,9 +61,7 @@ class CustomerService extends BaseService {
    * @return {string} the validated email
    */
   validateEmail_(email) {
-    const schema = Validator.string()
+    const schema = Validator.string().email().required()
-      .email()
-      .required()
     const { value, error } = schema.validate(email)
     if (error) {
       throw new MedusaError(
@@ -382,7 +378,8 @@ class CustomerService extends BaseService {
    * @return {Promise} resolves to the update result.
    */
   async update(customerId, update) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(
+      async (manager) => {
         const customerRepository = manager.getCustomRepository(
           this.customerRepository_
         )
@@ -424,8 +421,7 @@ class CustomerService extends BaseService {
         }
 
         if (groups) {
-        const id = groups.map((g) => g.id)
+          customer.groups = groups
-        customer.groups = await this.customerGroupService_.list({ id })
         }
 
         const updated = await customerRepository.save(customer)
@@ -434,7 +430,11 @@ class CustomerService extends BaseService {
           .withTransaction(manager)
           .emit(CustomerService.Events.UPDATED, updated)
         return updated
-    })
+      },
+      async (error) => {
+        throw formatException(error)
+      }
+    )
   }
 
   /**

packages/medusa/src/services/discount.js

@@ -2,6 +2,7 @@ import { BaseService } from "medusa-interfaces"
 import { Validator, MedusaError } from "medusa-core-utils"
 import { parse, toSeconds } from "iso8601-duration"
 import { Brackets, ILike } from "typeorm"
+import { formatException } from "../utils/exception-formatter"
 
 /**
  * Provides layer to manipulate discounts.
@@ -182,7 +183,7 @@ class DiscountService extends BaseService {
           "Fixed discounts can have one region"
         )
       }
-
+      try {
         if (discount.regions) {
           discount.regions = await Promise.all(
             discount.regions.map((regionId) =>
@@ -200,6 +201,9 @@ class DiscountService extends BaseService {
         const created = await discountRepo.create(discount)
         const result = await discountRepo.save(created)
         return result
+      } catch (error) {
+        throw formatException(error)
+      }
     })
   }
 

packages/medusa/src/services/product-collection.js

@@ -1,6 +1,7 @@
 import { MedusaError } from "medusa-core-utils"
 import { BaseService } from "medusa-interfaces"
 import { Brackets, ILike } from "typeorm"
+import { formatException } from "../utils/exception-formatter"
 
 /**
  * Provides layer to manipulate product collections.
@@ -106,8 +107,12 @@ class ProductCollectionService extends BaseService {
         this.productCollectionRepository_
       )
 
-      const productCollection = collectionRepo.create(collection)
+      try {
-      return collectionRepo.save(productCollection)
+        const productCollection = await collectionRepo.create(collection)
+        return await collectionRepo.save(productCollection)
+      } catch (error) {
+        throw formatException(error)
+      }
     })
   }
 
@@ -166,6 +171,7 @@ class ProductCollectionService extends BaseService {
     return this.atomicPhase_(async (manager) => {
       const productRepo = manager.getCustomRepository(this.productRepository_)
 
+      try {
         const { id } = await this.retrieve(collectionId, { select: ["id"] })
 
         await productRepo.bulkAddToCollection(productIds, id)
@@ -173,6 +179,9 @@ class ProductCollectionService extends BaseService {
         return await this.retrieve(id, {
           relations: ["products"],
         })
+      } catch (error) {
+        throw formatException(error)
+      }
     })
   }
 

packages/medusa/src/services/product.js

@@ -1,6 +1,7 @@
 import { MedusaError } from "medusa-core-utils"
 import { BaseService } from "medusa-interfaces"
 import { Brackets } from "typeorm"
+import { formatException } from "../utils/exception-formatter"
 
 /**
  * Provides layer to manipulate products.
@@ -378,6 +379,7 @@ class ProductService extends BaseService {
         rest.discountable = false
       }
 
+      try {
         let product = productRepo.create(rest)
 
         if (images) {
@@ -402,7 +404,9 @@ class ProductService extends BaseService {
           })
         )
 
-      const result = await this.retrieve(product.id, { relations: ["options"] })
+        const result = await this.retrieve(product.id, {
+          relations: ["options"],
+        })
 
         await this.eventBus_
           .withTransaction(manager)
@@ -410,6 +414,9 @@ class ProductService extends BaseService {
             id: result.id,
           })
         return result
+      } catch (error) {
+        throw formatException(error)
+      }
     })
   }
 

packages/medusa/src/types/customer-groups.ts

@@ -13,6 +13,7 @@ export class CustomerGroupsBatchCustomer {
   @IsString()
   id: string
 }
+
 export class CustomerGroupUpdate {
   name?: string
   metadata?: object

packages/medusa/src/utils/exception-formatter.ts

@@ -0,0 +1,41 @@
+import { MedusaError } from "medusa-core-utils"
+
+export enum PostgresError {
+  DUPLICATE_ERROR = "23505",
+  FOREIGN_KEY_ERROR = "23503",
+}
+export const formatException = (err): Error => {
+  switch (err.code) {
+    case PostgresError.DUPLICATE_ERROR:
+      return new MedusaError(
+        MedusaError.Types.DUPLICATE_ERROR,
+        `${err.table.charAt(0).toUpperCase()}${err.table.slice(
+          1
+        )} with ${err.detail
+          .slice(4)
+          .replace(/[()=]/g, (s) => (s === "=" ? " " : ""))}`
+      )
+    case PostgresError.FOREIGN_KEY_ERROR: {
+      const matches =
+        /Key \(([\w-\d]+)\)=\(([\w-\d]+)\) is not present in table "(\w+)"/g.exec(
+          err.detail
+        )
+
+      if (matches?.length !== 4) {
+        return new MedusaError(
+          MedusaError.Types.NOT_FOUND,
+          JSON.stringify(matches)
+        )
+      }
+
+      return new MedusaError(
+        MedusaError.Types.NOT_FOUND,
+        `${matches[3]?.charAt(0).toUpperCase()}${matches[3]?.slice(1)} with ${
+          matches[1]
+        } ${matches[2]} does not exist.`
+      )
+    }
+    default:
+      return err
+  }
+}