# Class: DiscountService

Provides layer to manipulate discounts.

**`Implements`**

## Hierarchy

- `TransactionBaseService`<[`DiscountService`](DiscountService.md)\>

  ↳ **`DiscountService`**

## Constructors

### constructor

• **new DiscountService**(`__namedParameters`)

#### Parameters

| Name | Type |
| :------ | :------ |
| `__namedParameters` | `Object` |

#### Overrides

TransactionBaseService&lt;DiscountService\&gt;.constructor

#### Defined in

[packages/medusa/src/services/discount.ts:62](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L62)

## Properties

### configModule

• `Protected` `Optional` `Readonly` **configModule**: `Record`<`string`, `unknown`\>

#### Inherited from

TransactionBaseService.configModule

#### Defined in

[packages/medusa/src/interfaces/transaction-base-service.ts:13](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/interfaces/transaction-base-service.ts#L13)

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### container

• `Protected` `Readonly` **container**: `unknown`

#### Inherited from

TransactionBaseService.container

#### Defined in

[packages/medusa/src/interfaces/transaction-base-service.ts:12](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/interfaces/transaction-base-service.ts#L12)

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### customerService\_

• `Protected` `Readonly` **customerService\_**: [`CustomerService`](CustomerService.md)

#### Defined in

[packages/medusa/src/services/discount.ts:52](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L52)

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### discountConditionRepository\_

• `Protected` `Readonly` **discountConditionRepository\_**: typeof `DiscountConditionRepository`

#### Defined in

[packages/medusa/src/services/discount.ts:55](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L55)

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### discountConditionService\_

• `Protected` `Readonly` **discountConditionService\_**: `DiscountConditionService`

#### Defined in

[packages/medusa/src/services/discount.ts:56](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L56)

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### discountRepository\_

• `Protected` `Readonly` **discountRepository\_**: typeof `DiscountRepository`

#### Defined in

[packages/medusa/src/services/discount.ts:51](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L51)

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### discountRuleRepository\_

• `Protected` `Readonly` **discountRuleRepository\_**: typeof `DiscountRuleRepository`

#### Defined in

[packages/medusa/src/services/discount.ts:53](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L53)

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### eventBus\_

• `Protected` `Readonly` **eventBus\_**: [`EventBusService`](EventBusService.md)

#### Defined in

[packages/medusa/src/services/discount.ts:60](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L60)

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### giftCardRepository\_

• `Protected` `Readonly` **giftCardRepository\_**: typeof `GiftCardRepository`

#### Defined in

[packages/medusa/src/services/discount.ts:54](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L54)

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### manager\_

• `Protected` **manager\_**: `EntityManager`

#### Overrides

TransactionBaseService.manager\_

#### Defined in

[packages/medusa/src/services/discount.ts:48](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L48)

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### productService\_

• `Protected` `Readonly` **productService\_**: [`ProductService`](ProductService.md)

#### Defined in

[packages/medusa/src/services/discount.ts:58](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L58)

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### regionService\_

• `Protected` `Readonly` **regionService\_**: [`RegionService`](RegionService.md)

#### Defined in

[packages/medusa/src/services/discount.ts:59](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L59)

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### totalsService\_

• `Protected` `Readonly` **totalsService\_**: [`TotalsService`](TotalsService.md)

#### Defined in

[packages/medusa/src/services/discount.ts:57](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L57)

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### transactionManager\_

• `Protected` **transactionManager\_**: `undefined` \| `EntityManager`

#### Overrides

TransactionBaseService.transactionManager\_

#### Defined in

[packages/medusa/src/services/discount.ts:49](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L49)

## Methods

### addRegion

▸ **addRegion**(`discountId`, `regionId`): `Promise`<`Discount`\>

Adds a region to the discount regions array.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount |
| `regionId` | `string` | id of region to add |

#### Returns

`Promise`<`Discount`\>

the result of the update operation

#### Defined in

[packages/medusa/src/services/discount.ts:465](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L465)

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### atomicPhase\_

▸ `Protected` **atomicPhase_**<`TResult`, `TError`\>(`work`, `isolationOrErrorHandler?`, `maybeErrorHandlerOrDontFail?`): `Promise`<`TResult`\>

Wraps some work within a transactional block. If the service already has
a transaction manager attached this will be reused, otherwise a new
transaction manager is created.

#### Type parameters

| Name |
| :------ |
| `TResult` |
| `TError` |

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `work` | (`transactionManager`: `EntityManager`) => `Promise`<`TResult`\> | the transactional work to be done |
| `isolationOrErrorHandler?` | `IsolationLevel` \| (`error`: `TError`) => `Promise`<`void` \| `TResult`\> | the isolation level to be used for the work. |
| `maybeErrorHandlerOrDontFail?` | (`error`: `TError`) => `Promise`<`void` \| `TResult`\> | Potential error handler |

#### Returns

`Promise`<`TResult`\>

the result of the transactional work

#### Inherited from

TransactionBaseService.atomicPhase\_

#### Defined in

[packages/medusa/src/interfaces/transaction-base-service.ts:53](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/interfaces/transaction-base-service.ts#L53)

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### calculateDiscountForLineItem

▸ **calculateDiscountForLineItem**(`discountId`, `lineItem`, `cart`): `Promise`<`number`\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `discountId` | `string` |
| `lineItem` | `LineItem` |
| `cart` | `Cart` |

#### Returns

`Promise`<`number`\>

#### Defined in

[packages/medusa/src/services/discount.ts:566](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L566)

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### canApplyForCustomer

▸ **canApplyForCustomer**(`discountRuleId`, `customerId`): `Promise`<`boolean`\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `customerId` | `undefined` \| `string` |

#### Returns

`Promise`<`boolean`\>

#### Defined in

[packages/medusa/src/services/discount.ts:710](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L710)

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### create

▸ **create**(`discount`): `Promise`<`Discount`\>

Creates a discount with provided data given that the data is validated.
Normalizes discount code to uppercase.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discount` | `CreateDiscountInput` | the discount data to create |

#### Returns

`Promise`<`Discount`\>

the result of the create operation

#### Defined in

[packages/medusa/src/services/discount.ts:176](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L176)

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### createDynamicCode

▸ **createDynamicCode**(`discountId`, `data`): `Promise`<`Discount`\>

Creates a dynamic code for a discount id.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | the id of the discount to create a code for |
| `data` | `CreateDynamicDiscountInput` | the object containing a code to identify the discount by |

#### Returns

`Promise`<`Discount`\>

the newly created dynamic code

#### Defined in

[packages/medusa/src/services/discount.ts:393](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L393)

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### delete

▸ **delete**(`discountId`): `Promise`<`void`\>

Deletes a discount idempotently

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount to delete |

#### Returns

`Promise`<`void`\>

the result of the delete operation

#### Defined in

[packages/medusa/src/services/discount.ts:525](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L525)

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### deleteDynamicCode

▸ **deleteDynamicCode**(`discountId`, `code`): `Promise`<`void`\>

Deletes a dynamic code for a discount id.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | the id of the discount to create a code for |
| `code` | `string` | the code to identify the discount by |

#### Returns

`Promise`<`void`\>

the newly created dynamic code

#### Defined in

[packages/medusa/src/services/discount.ts:444](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L444)

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### hasExpired

▸ **hasExpired**(`discount`): `boolean`

#### Parameters

| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |

#### Returns

`boolean`

#### Defined in

[packages/medusa/src/services/discount.ts:679](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L679)

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### hasNotStarted

▸ **hasNotStarted**(`discount`): `boolean`

#### Parameters

| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |

#### Returns

`boolean`

#### Defined in

[packages/medusa/src/services/discount.ts:675](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L675)

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### hasReachedLimit

▸ **hasReachedLimit**(`discount`): `boolean`

#### Parameters

| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |

#### Returns

`boolean`

#### Defined in

[packages/medusa/src/services/discount.ts:669](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L669)

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### isDisabled

▸ **isDisabled**(`discount`): `boolean`

#### Parameters

| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |

#### Returns

`boolean`

#### Defined in

[packages/medusa/src/services/discount.ts:687](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L687)

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### isValidForRegion

▸ **isValidForRegion**(`discount`, `region_id`): `Promise`<`boolean`\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
| `region_id` | `string` |

#### Returns

`Promise`<`boolean`\>

#### Defined in

[packages/medusa/src/services/discount.ts:691](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L691)

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### list

▸ **list**(`selector?`, `config?`): `Promise`<`Discount`[]\>

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `selector` | `FilterableDiscountProps` | the query object for find |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |

#### Returns

`Promise`<`Discount`[]\>

the result of the find operation

#### Defined in

[packages/medusa/src/services/discount.ts:114](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L114)

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### listAndCount

▸ **listAndCount**(`selector?`, `config?`): `Promise`<[`Discount`[], `number`]\>

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `selector` | `FilterableDiscountProps` | the query object for find |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |

#### Returns

`Promise`<[`Discount`[], `number`]\>

the result of the find operation

#### Defined in

[packages/medusa/src/services/discount.ts:130](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L130)

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### removeRegion

▸ **removeRegion**(`discountId`, `regionId`): `Promise`<`Discount`\>

Removes a region from the discount regions array.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount |
| `regionId` | `string` | id of region to remove |

#### Returns

`Promise`<`Discount`\>

the result of the update operation

#### Defined in

[packages/medusa/src/services/discount.ts:500](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L500)

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### retrieve

▸ **retrieve**(`discountId`, `config?`): `Promise`<`Discount`\>

Gets a discount by id.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount to retrieve |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |

#### Returns

`Promise`<`Discount`\>

the discount

#### Defined in

[packages/medusa/src/services/discount.ts:241](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L241)

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### retrieveByCode

▸ **retrieveByCode**(`discountCode`, `config?`): `Promise`<`Discount`\>

Gets a discount by discount code.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountCode` | `string` | discount code of discount to retrieve |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |

#### Returns

`Promise`<`Discount`\>

the discount document

#### Defined in

[packages/medusa/src/services/discount.ts:267](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L267)

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### shouldRetryTransaction\_

▸ `Protected` **shouldRetryTransaction_**(`err`): `boolean`

#### Parameters

| Name | Type |
| :------ | :------ |
| `err` | `Record`<`string`, `unknown`\> \| { `code`: `string`  } |

#### Returns

`boolean`

#### Inherited from

TransactionBaseService.shouldRetryTransaction\_

#### Defined in

[packages/medusa/src/interfaces/transaction-base-service.ts:34](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/interfaces/transaction-base-service.ts#L34)

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### update

▸ **update**(`discountId`, `update`): `Promise`<`Discount`\>

Updates a discount.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | discount id of discount to update |
| `update` | `UpdateDiscountInput` | the data to update the discount with |

#### Returns

`Promise`<`Discount`\>

the result of the update operation

#### Defined in

[packages/medusa/src/services/discount.ts:298](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L298)

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### validateDiscountForCartOrThrow

▸ **validateDiscountForCartOrThrow**(`cart`, `discount`): `Promise`<`void`\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `cart` | `Cart` |
| `discount` | `Discount` |

#### Returns

`Promise`<`void`\>

#### Defined in

[packages/medusa/src/services/discount.ts:609](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L609)

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### validateDiscountForProduct

▸ **validateDiscountForProduct**(`discountRuleId`, `productId`): `Promise`<`boolean`\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `productId` | `undefined` \| `string` |

#### Returns

`Promise`<`boolean`\>

#### Defined in

[packages/medusa/src/services/discount.ts:539](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L539)

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### validateDiscountRule\_

▸ **validateDiscountRule_**<`T`\>(`discountRule`): `T`

Creates a discount rule with provided data given that the data is validated.

#### Type parameters

| Name | Type |
| :------ | :------ |
| `T` | extends `Object` |

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `discountRule` | `T` | the discount rule to create |

#### Returns

`T`

the result of the create operation

#### Defined in

[packages/medusa/src/services/discount.ts:96](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/services/discount.ts#L96)

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### withTransaction

▸ **withTransaction**(`transactionManager?`): [`DiscountService`](DiscountService.md)

#### Parameters

| Name | Type |
| :------ | :------ |
| `transactionManager?` | `EntityManager` |

#### Returns

[`DiscountService`](DiscountService.md)

#### Inherited from

TransactionBaseService.withTransaction

#### Defined in

[packages/medusa/src/interfaces/transaction-base-service.ts:16](https://github.com/medusajs/medusa/blob/f406c8d4/packages/medusa/src/interfaces/transaction-base-service.ts#L16)