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

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

# {metadata.title}

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

## Features

### Price Management

With the Pricing Module, store the prices of a resource and manage them through the main service's methods.

Prices are grouped in a price set, allowing you to add more than one price for a resource based on different conditions, such as currency code.

```ts
const priceSet = await pricingModuleService.createPriceSets({
  prices: [
    {
      amount: 500,
      currency_code: "USD",
    },
    {
      amount: 400,
      currency_code: "EUR",
      min_quantity: 0,
      max_quantity: 4,
      rules: {},
    },
  ],
})
```

### Advanced Rule Engine

Create prices with custom rules. This gives you more flexibility in how you condition prices, filter them, and ensure the best prices are retrieved for custom contexts.

```ts highlights={[["8"]]}
const priceSet = await pricingModuleService.addPrices({
  priceSetId: "pset_123",
  prices: [
    {
      amount: 500,
      currency_code: "EUR",
      rules: {
        region_id: "reg_123",
      },
    },
  ],
})
```

### Price Lists

Price lists allow you to group prices and apply them only in specific conditions. You can also use them to override existing prices for the specified conditions.

```ts
const priceList = await pricingModuleService.createPriceLists([
  {
    title: "My Sale",
    description: "Sale on selected items.",
    type: "sale",
    starts_at: Date.parse("01/10/2023").toString(),
    ends_at: Date.parse("31/10/2023").toString(),
    rules: {
      region_id: ["reg_123", "reg_321"],
    },
    prices: [
      {
        amount: 400,
        currency_code: "EUR",
        price_set_id: "pset_123",
      },
    ],
  },
])
```

### Price Calculation Strategy

Retrieve the best price in a given context and for the specified rule values.

```ts
const price = await pricingModuleService.calculatePrices(
  { id: ["pset_123"] },
  {
    context: {
      currency_code: "EUR",
      region_id: "reg_123",
    },
  }
)
```

---

## How to Use Pricing Module's Service

You can use the Pricing Module's main service by resolving from the Medusa container the resource `ModuleRegistrationName.PRICING` 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 { IPricingModuleService } from "@medusajs/types"
  import { ModuleRegistrationName } from "@medusajs/utils"

export async function GET(
  request: MedusaRequest,
  res: MedusaResponse
): Promise<void> {
  const pricingModuleService: IPricingModuleService = request.scope.resolve(
    ModuleRegistrationName.PRICING
  )

  res.json({
    price_sets: await pricingModuleService.listPriceSets(),
  })
}
```

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

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

export default async function subscriberHandler({ container }: SubscriberArgs) {
  const pricingModuleService: IPricingModuleService = container.resolve(
    ModuleRegistrationName.PRICING
  )

  const priceSets = await pricingModuleService.listPriceSets()
}
```

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

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

const step1 = createStep("step-1", async (_, { container }) => {
  const pricingModuleService: IPricingModuleService = container.resolve(
    ModuleRegistrationName.PRICING
  )

  const priceSets = await pricingModuleService.listPriceSets()
})
```

  </CodeTab>
</CodeTabs>