import { CodeTabs, CodeTab } from "docs-ui"

export const metadata = {
  title: `Order Module`,
}

# {metadata.title}

The Order Module is the `@medusajs/order` NPM package that provides order-related features in your Medusa and Node.js applications.

---

## Features

### Order Management

Store and manage your orders by retrieving, creating, canceling, and performing other operations.

```ts
const order = await orderModuleService.create({
  currency_code: "usd",
  items: [
    {
      title: "Shirt",
      quantity: 1,
      unit_price: 3000,
    },
  ],
  shipping_methods: [
    {
      name: "Express shipping",
      amount: 3000,
    },
  ],
})
```

### Draft Orders

Allow merchants to create orders on behalf of their customers as draft orders that later are transformed to regular orders.

```ts
const draftOrder = await orderModuleService.create({
  currency_code: "usd",
  // other details...
  status: "draft",
})
```

### Returns, Exchanges, and Other Order Changes

Orders can be changed to return items from the customer, exchange an item with another, change the quantity of an item, or other changes.

Changes are only applied after confirmation, and order history is preserved through versioning.

```ts
const orderChange =
  await orderModuleService.createOrderChange({
    order_id: "ord_123",
  })

// add item to the order
await orderModuleService.addOrderAction({
  order_change_id: orderChange.id,
  action: "ADD_ITEM",
  details: {
    quantity: 1,
    unit_price: 4000,
    reference_id: "orditem_123",
  },
})

// confirm order change and apply it to order
await orderModuleService.confirmOrderChange("ord_123")
```

### Apply Promotions

Apply promotions or discounts to the order's items and shipping methods by adding adjustment lines that are factored into their subtotals.

```ts
const lineAdjustments =
  await orderModuleService.addLineItemAdjustments({
    item_id: "cali_123",
    code: "50OFF",
    amount: 500,
  })

const shippingAdjustments =
  await orderModuleService.addShippingMethodAdjustments({
    shipping_method_id: "casm_123",
    code: "FREESHIPPING",
    amount: 1000,
  })
```

---

## Configure Order Module

After installing the `@medusajs/order` package in your Medusa application, add it to the `modules` object in `medusa-config.js`:

```js title="medusa-config.js"
const modules = {
  // ...
  order: {
    resolve: "@medusajs/order",
  },
}
```

---

## How to Use Order Module's Service

You can use the Order Module's main service by resolving from the Medusa container the resource `ModuleRegistrationName.ORDER` imported from `@medusajs/modules-sdk`.

For example:

<CodeTabs groupId="resource-type">
  <CodeTab label="API Route" value="api-route">

  ```ts title="src/api/store/custom/route.ts"
  import { MedusaRequest, MedusaResponse } from "@medusajs/medusa"
  import { IOrderModuleService } from "@medusajs/types"
  import { ModuleRegistrationName } from "@medusajs/modules-sdk"

  export async function GET(
    req: MedusaRequest,
    res: MedusaResponse
  ): Promise<void> {
    const orderModuleService: IOrderModuleService =
      req.scope.resolve(ModuleRegistrationName.ORDER)

    res.json({
      orders: await orderModuleService.list(),
    })
  }
  ```

  </CodeTab>
  <CodeTab label="Subscriber" value="subscribers">

  ```ts title="src/subscribers/custom-handler.ts"
  import { SubscriberArgs } from "@medusajs/medusa"
  import { IOrderModuleService } from "@medusajs/types"
  import { ModuleRegistrationName } from "@medusajs/modules-sdk"

  export default async function subscriberHandler({
    container,
  }: SubscriberArgs) {
    const orderModuleService: IOrderModuleService =
      container.resolve(ModuleRegistrationName.API_KEY)

    const orders = await orderModuleService.list()
  }
  ```

  </CodeTab>
  <CodeTab label="Workflow Step" value="workflow-step">

  ```ts title="src/workflows/hello-world/step1.ts"
  import { createStep } from "@medusajs/workflows-sdk"
  import { IOrderModuleService } from "@medusajs/types"
  import { ModuleRegistrationName } from "@medusajs/modules-sdk"

  const step1 = createStep("step-1", async (_, context) => {
    const orderModuleService: IOrderModuleService =
      context.container.resolve(
        ModuleRegistrationName.API_KEY
      )
    const orders = await orderModuleService.list()
  })
  ```

  </CodeTab>
</CodeTabs>