feat(cart): Add line items in cart-creation (#6114)

.changeset/khaki-deers-talk.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/types": patch
+---
+
+Add line items in cart creation

packages/cart/integration-tests/__tests__/services/cart-module/index.spec.ts

@@ -124,6 +124,91 @@ describe("Cart Module Service", () => {
         })
       )
     })
+
+    it("should create a cart with items", async () => {
+      const createdCart = await service.create({
+        currency_code: "eur",
+        items: [
+          {
+            title: "test",
+            quantity: 1,
+            unit_price: 100,
+          },
+        ],
+      })
+
+      const cart = await service.retrieve(createdCart.id, {
+        relations: ["items"],
+      })
+
+      expect(cart).toEqual(
+        expect.objectContaining({
+          id: createdCart.id,
+          currency_code: "eur",
+          items: expect.arrayContaining([
+            expect.objectContaining({
+              title: "test",
+              unit_price: 100,
+            }),
+          ]),
+        })
+      )
+    })
+
+    it("should create multiple carts with items", async () => {
+      const createdCarts = await service.create([
+        {
+          currency_code: "eur",
+          items: [
+            {
+              title: "test",
+              quantity: 1,
+              unit_price: 100,
+            },
+          ],
+        },
+        {
+          currency_code: "usd",
+          items: [
+            {
+              title: "test-2",
+              quantity: 2,
+              unit_price: 200,
+            },
+          ],
+        },
+      ])
+
+      const carts = await service.list(
+        { id: createdCarts.map((c) => c.id) },
+        {
+          relations: ["items"],
+        }
+      )
+
+      expect(carts).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            currency_code: "eur",
+            items: expect.arrayContaining([
+              expect.objectContaining({
+                title: "test",
+                unit_price: 100,
+              }),
+            ]),
+          }),
+          expect.objectContaining({
+            currency_code: "usd",
+            items: expect.arrayContaining([
+              expect.objectContaining({
+                title: "test-2",
+                unit_price: 200,
+              }),
+            ]),
+          }),
+        ])
+      )
+    })
   })
 
   describe("update", () => {

packages/cart/src/services/cart-module.ts

@@ -17,8 +17,8 @@ import {
   isObject,
   isString,
 } from "@medusajs/utils"
-import { LineItem, ShippingMethod } from "@models"
+import { Cart, LineItem, ShippingMethod } from "@models"
-import { UpdateLineItemDTO } from "@types"
+import { CreateLineItemDTO, UpdateLineItemDTO } from "@types"
 import { joinerConfig } from "../joiner-config"
 import * as services from "../services"
 
@@ -141,7 +141,30 @@ export default class CartModuleService implements ICartModuleService {
     data: CartTypes.CreateCartDTO[],
     @MedusaContext() sharedContext: Context = {}
   ) {
-    return await this.cartService_.create(data, sharedContext)
+    const lineItemsToCreate: CreateLineItemDTO[] = []
+    const createdCarts: Cart[] = []
+    for (const { items, ...cart } of data) {
+      const [created] = await this.cartService_.create([cart], sharedContext)
+
+      createdCarts.push(created)
+
+      if (items?.length) {
+        const cartItems = items.map((item) => {
+          return {
+            ...item,
+            cart_id: created.id,
+          }
+        })
+
+        lineItemsToCreate.push(...cartItems)
+      }
+    }
+
+    if (lineItemsToCreate.length) {
+      await this.addLineItemsBulk_(lineItemsToCreate, sharedContext)
+    }
+
+    return createdCarts
   }
 
   async update(
@@ -324,7 +347,7 @@ export default class CartModuleService implements ICartModuleService {
   ): Promise<LineItem[]> {
     const cart = await this.retrieve(cartId, { select: ["id"] }, sharedContext)
 
-    const toUpdate = items.map((item) => {
+    const toUpdate: CreateLineItemDTO[] = items.map((item) => {
       return {
         ...item,
         cart_id: cart.id,
@@ -336,7 +359,7 @@ export default class CartModuleService implements ICartModuleService {
 
   @InjectTransactionManager("baseRepository_")
   protected async addLineItemsBulk_(
-    data: CartTypes.CreateLineItemForCartDTO[],
+    data: CreateLineItemDTO[],
     @MedusaContext() sharedContext: Context = {}
   ): Promise<LineItem[]> {
     return await this.lineItemService_.create(data, sharedContext)

packages/types/src/cart/mutations.ts

@@ -25,17 +25,15 @@ export interface CreateCartDTO {
   region_id?: string
   customer_id?: string
   sales_channel_id?: string
-
   email?: string
   currency_code: string
-
   shipping_address_id?: string
   billing_address_id?: string
-
   shipping_address?: CreateAddressDTO | UpdateAddressDTO
   billing_address?: CreateAddressDTO | UpdateAddressDTO
-
   metadata?: Record<string, unknown>
+
+  items?: CreateLineItemDTO[]
 }
 
 export interface UpdateCartDTO {