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medusa-store/docs/content/references/services/classes/DiscountService.md
Shahed Nasser c87ddd73ff docs: Add Services reference (#1548)
2022-06-01 18:33:08 +02:00

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# Class: DiscountService
Provides layer to manipulate discounts.
**`implements`** {BaseService}
## Hierarchy
- `"medusa-interfaces"`
↳ **`DiscountService`**
## Constructors
### constructor
• **new DiscountService**(`__namedParameters`)
#### Parameters
| Name | Type |
| :------ | :------ |
| `__namedParameters` | `Object` |
#### Overrides
BaseService.constructor
#### Defined in
[services/discount.ts:59](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L59)
## Properties
### discountConditionRepository\_
• `Private` **discountConditionRepository\_**: typeof `DiscountConditionRepository`
#### Defined in
[services/discount.ts:52](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L52)
___
### discountConditionService\_
• `Private` **discountConditionService\_**: `DiscountConditionService`
#### Defined in
[services/discount.ts:53](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L53)
___
### discountRepository\_
• `Private` **discountRepository\_**: typeof `DiscountRepository`
#### Defined in
[services/discount.ts:49](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L49)
___
### discountRuleRepository\_
• `Private` **discountRuleRepository\_**: typeof `DiscountRuleRepository`
#### Defined in
[services/discount.ts:50](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L50)
___
### eventBus\_
• `Private` **eventBus\_**: [`EventBusService`](EventBusService.md)
#### Defined in
[services/discount.ts:57](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L57)
___
### giftCardRepository\_
• `Private` **giftCardRepository\_**: typeof `GiftCardRepository`
#### Defined in
[services/discount.ts:51](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L51)
___
### manager\_
• `Private` **manager\_**: `EntityManager`
#### Defined in
[services/discount.ts:48](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L48)
___
### productService\_
• `Private` **productService\_**: [`ProductService`](ProductService.md)
#### Defined in
[services/discount.ts:55](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L55)
___
### regionService\_
• `Private` **regionService\_**: [`RegionService`](RegionService.md)
#### Defined in
[services/discount.ts:56](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L56)
___
### totalsService\_
• `Private` **totalsService\_**: [`TotalsService`](TotalsService.md)
#### Defined in
[services/discount.ts:54](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L54)
## 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
[services/discount.ts:521](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L521)
___
### calculateDiscountForLineItem
▸ **calculateDiscountForLineItem**(`discountId`, `lineItem`, `cart`): `Promise`<`number`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountId` | `string` |
| `lineItem` | `LineItem` |
| `cart` | `Cart` |
#### Returns
`Promise`<`number`\>
#### Defined in
[services/discount.ts:624](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L624)
___
### canApplyForCustomer
▸ **canApplyForCustomer**(`discountRuleId`, `customerId`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `customerId` | `undefined` \| `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[services/discount.ts:762](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L762)
___
### 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
[services/discount.ts:220](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L220)
___
### 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
[services/discount.ts:446](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L446)
___
### 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
[services/discount.ts:583](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L583)
___
### 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
[services/discount.ts:498](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L498)
___
### hasExpired
▸ **hasExpired**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[services/discount.ts:733](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L733)
___
### hasNotStarted
▸ **hasNotStarted**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[services/discount.ts:729](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L729)
___
### hasReachedLimit
▸ **hasReachedLimit**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[services/discount.ts:723](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L723)
___
### isDisabled
▸ **isDisabled**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[services/discount.ts:741](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L741)
___
### isValidForRegion
▸ **isValidForRegion**(`discount`, `region_id`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
| `region_id` | `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[services/discount.ts:745](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L745)
___
### 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
[services/discount.ts:156](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L156)
___
### 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
[services/discount.ts:173](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L173)
___
### 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
[services/discount.ts:557](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L557)
___
### 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
[services/discount.ts:285](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L285)
___
### 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
[services/discount.ts:313](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L313)
___
### 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
[services/discount.ts:348](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L348)
___
### validateDiscountForCartOrThrow
▸ **validateDiscountForCartOrThrow**(`cart`, `discount`): `Promise`<`void`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `cart` | `Cart` |
| `discount` | `Discount` |
#### Returns
`Promise`<`void`\>
#### Defined in
[services/discount.ts:665](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L665)
___
### validateDiscountForProduct
▸ **validateDiscountForProduct**(`discountRuleId`, `productId`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `productId` | `undefined` \| `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[services/discount.ts:599](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L599)
___
### 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
[services/discount.ts:138](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L138)
___
### withTransaction
▸ **withTransaction**(`transactionManager`): [`DiscountService`](DiscountService.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `transactionManager` | `EntityManager` |
#### Returns
[`DiscountService`](DiscountService.md)
#### Defined in
[services/discount.ts:108](https://github.com/medusajs/medusa/blob/2d3e404f/packages/medusa/src/services/discount.ts#L108)
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