Files
medusa-store/docs/content/references/services/classes/TotalsService.md
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* fix(medusa): Rounding issues on line item adjustments (#3446)

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2023-03-31 09:34:38 +02:00

20 KiB

Class: TotalsService

A service that calculates total and subtotals for orders, carts etc..

Implements

Hierarchy

  • TransactionBaseService

    TotalsService

Constructors

constructor

new TotalsService(__namedParameters)

Parameters

Name Type
__namedParameters TotalsServiceProps

Overrides

TransactionBaseService.constructor

Defined in

packages/medusa/src/services/totals.ts:113

Properties

__configModule__

Protected Optional Readonly __configModule__: Record<string, unknown>

Inherited from

TransactionBaseService.__configModule__

Defined in

packages/medusa/src/interfaces/transaction-base-service.ts:10


__container__

Protected Readonly __container__: any

Inherited from

TransactionBaseService.__container__

Defined in

packages/medusa/src/interfaces/transaction-base-service.ts:9


__moduleDeclaration__

Protected Optional Readonly __moduleDeclaration__: Record<string, unknown>

Inherited from

TransactionBaseService.__moduleDeclaration__

Defined in

packages/medusa/src/interfaces/transaction-base-service.ts:11


featureFlagRouter_

Protected Readonly featureFlagRouter_: FlagRouter

Defined in

packages/medusa/src/services/totals.ts:111


manager_

Protected manager_: EntityManager

Overrides

TransactionBaseService.manager_

Defined in

packages/medusa/src/services/totals.ts:105


newTotalsService_

Protected Readonly newTotalsService_: NewTotalsService

Defined in

packages/medusa/src/services/totals.ts:109


taxCalculationStrategy_

Protected Readonly taxCalculationStrategy_: ITaxCalculationStrategy

Defined in

packages/medusa/src/services/totals.ts:110


taxProviderService_

Protected Readonly taxProviderService_: TaxProviderService

Defined in

packages/medusa/src/services/totals.ts:108


transactionManager_

Protected transactionManager_: EntityManager

Overrides

TransactionBaseService.transactionManager_

Defined in

packages/medusa/src/services/totals.ts:106

Methods

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:50


calculateDiscount_

calculateDiscount_(lineItem, variant, variantPrice, value, discountType): LineDiscount

Calculates either fixed or percentage discount of a variant

Parameters

Name Type Description
lineItem LineItem id of line item
variant string id of variant in line item
variantPrice number price of the variant based on region
value number discount value
discountType DiscountRuleType the type of discount (fixed or percentage)

Returns

LineDiscount

triples of lineitem, variant and applied discount

Defined in

packages/medusa/src/services/totals.ts:629


getAllocationItemDiscounts

getAllocationItemDiscounts(discount, cart): LineDiscount[]

If the rule of a discount has allocation="item", then we need to calculate discount on each item in the cart. Furthermore, we need to make sure to only apply the discount on valid variants. And finally we return ether an array of percentages discounts or fixed discounts alongside the variant on which the discount was applied.

Parameters

Name Type Description
discount Discount the discount to which we do the calculation
cart Cart | Order the cart to calculate discounts for

Returns

LineDiscount[]

array of triples of lineitem, variant and applied discount

Defined in

packages/medusa/src/services/totals.ts:671


getAllocationMap

getAllocationMap(orderOrCart, options?): Promise<LineAllocationsMap>

Gets a map of discounts and gift cards that apply to line items in an order. The function calculates the amount of a discount or gift card that applies to a specific line item.

Parameters

Name Type Description
orderOrCart Object the order or cart to get an allocation map for
orderOrCart.claims? ClaimOrder[] -
orderOrCart.discounts? Discount[] -
orderOrCart.items LineItem[] -
orderOrCart.swaps? Swap[] -
options AllocationMapOptions controls what should be included in allocation map

Returns

Promise<LineAllocationsMap>

the allocation map for the line items in the cart or order.

Defined in

packages/medusa/src/services/totals.ts:438


getCalculationContext

getCalculationContext(calculationContextData, options?): Promise<TaxCalculationContext>

Prepares the calculation context for a tax total calculation.

Parameters

Name Type Description
calculationContextData CalculationContextData the calculationContextData to get the calculation context for
options CalculationContextOptions options to gather context by

Returns

Promise<TaxCalculationContext>

the tax calculation context

Defined in

packages/medusa/src/services/totals.ts:1025


getDiscountTotal

getDiscountTotal(cartOrOrder): Promise<number>

Calculates the total discount amount for each of the different supported discount types. If discounts aren't present or invalid returns 0.

Parameters

Name Type Description
cartOrOrder Cart | Order the cart or order to calculate discounts for

Returns

Promise<number>

the total discounts amount

Defined in

packages/medusa/src/services/totals.ts:1005


getGiftCardTotal

getGiftCardTotal(cartOrOrder, opts?): Promise<{ tax_total: number ; total: number }>

Gets the gift card amount on a cart or order.

Parameters

Name Type Description
cartOrOrder Cart | Order the cart or order to get gift card amount for
opts Object -
opts.gift_cardable? number -

Returns

Promise<{ tax_total: number ; total: number }>

the gift card amount applied to the cart or order

Defined in

packages/medusa/src/services/totals.ts:974


getGiftCardableAmount

getGiftCardableAmount(cartOrOrder): Promise<number>

Gets the amount that can be gift carded on a cart. In regions where gift cards are taxable this amount should exclude taxes.

Parameters

Name Type Description
cartOrOrder Cart | Order the cart or order to get gift card amount for

Returns

Promise<number>

the gift card amount applied to the cart or order

Defined in

packages/medusa/src/services/totals.ts:957


getLineDiscounts

getLineDiscounts(cartOrOrder, discount?): LineDiscountAmount[]

Returns the discount amount allocated to the line items of an order.

Parameters

Name Type Description
cartOrOrder Object the cart or order to get line discount allocations for
cartOrOrder.claims? ClaimOrder[] -
cartOrOrder.items LineItem[] -
cartOrOrder.swaps? Swap[] -
discount? Discount the discount to use as context for the calculation

Returns

LineDiscountAmount[]

the allocations that the discount has on the items in the cart or order

Defined in

packages/medusa/src/services/totals.ts:722


getLineItemAdjustmentsTotal

getLineItemAdjustmentsTotal(cartOrOrder): number

Parameters

Name Type
cartOrOrder Cart | Order

Returns

number

Defined in

packages/medusa/src/services/totals.ts:699


getLineItemDiscountAdjustment

getLineItemDiscountAdjustment(lineItem, discount): number

Parameters

Name Type
lineItem LineItem
discount Discount

Returns

number

Defined in

packages/medusa/src/services/totals.ts:684


getLineItemRefund

getLineItemRefund(order, lineItem): Promise<number>

The amount that can be refunded for a given line item.

Parameters

Name Type Description
order Order order to use as context for the calculation
lineItem LineItem the line item to calculate the refund amount for.

Returns

Promise<number>

the line item refund amount.

Defined in

packages/medusa/src/services/totals.ts:507


getLineItemTotal

getLineItemTotal(lineItem, cartOrOrder, options?): Promise<number>

Gets a total for a line item. The total can take gift cards, discounts and taxes into account. This can be controlled through the options.

Parameters

Name Type Description
lineItem LineItem the line item to calculate a total for
cartOrOrder Cart | Order the cart or order to use as context for the calculation
options GetLineItemTotalOptions the options to use for the calculation

Returns

Promise<number>

the line item total

Defined in

packages/medusa/src/services/totals.ts:930


getLineItemTotals

getLineItemTotals(lineItem, cartOrOrder, options?): Promise<LineItemTotals>

Breaks down the totals related to a line item; these are the subtotal, the amount of discount applied to the line item, the amount of a gift card applied to a line item and the amount of tax applied to a line item.

Parameters

Name Type Description
lineItem LineItem the line item to calculate totals for
cartOrOrder Cart | Order the cart or order to use as context for the calculation
options LineItemTotalsOptions the options to evaluate the line item totals for

Returns

Promise<LineItemTotals>

the breakdown of the line item totals

Defined in

packages/medusa/src/services/totals.ts:778


getPaidTotal

getPaidTotal(order): number

Gets the total payments made on an order

Parameters

Name Type Description
order Order the order to calculate paid amount for

Returns

number

the total paid amount

Defined in

packages/medusa/src/services/totals.ts:160


getRefundTotal

getRefundTotal(order, lineItems): Promise<number>

Calculates refund total of line items. If any of the items to return have been discounted, we need to apply the discount again before refunding them.

Parameters

Name Type Description
order Order cart or order to calculate subtotal for
lineItems LineItem[] the line items to calculate refund total for

Returns

Promise<number>

the calculated subtotal

Defined in

packages/medusa/src/services/totals.ts:586


getRefundedTotal

getRefundedTotal(order): number

Gets the total refund amount for an order.

Parameters

Name Type Description
order Order the order to get total refund amount for.

Returns

number

the total refunded amount for an order.

Defined in

packages/medusa/src/services/totals.ts:492


getShippingMethodTotals

getShippingMethodTotals(shippingMethod, cartOrOrder, opts?): Promise<ShippingMethodTotals>

Gets the totals breakdown for a shipping method. Fetches tax lines if not already provided.

Parameters

Name Type Description
shippingMethod ShippingMethod the shipping method to get totals breakdown for.
cartOrOrder Cart | Order the cart or order to use as context for the breakdown
opts GetShippingMethodTotalsOptions options for what should be included

Returns

Promise<ShippingMethodTotals>

An object that breaks down the totals for the shipping method

Defined in

packages/medusa/src/services/totals.ts:194


getShippingTotal

getShippingTotal(cartOrOrder): Promise<number>

Calculates shipping total

Parameters

Name Type Description
cartOrOrder Cart | Order cart or order to calculate subtotal for

Returns

Promise<number>

shipping total

Defined in

packages/medusa/src/services/totals.ts:322


getSubtotal

getSubtotal(cartOrOrder, opts?): Promise<number>

Calculates subtotal of a given cart or order.

Parameters

Name Type Description
cartOrOrder Cart | Order cart or order to calculate subtotal for
opts SubtotalOptions options

Returns

Promise<number>

the calculated subtotal

Defined in

packages/medusa/src/services/totals.ts:286


getSwapTotal

getSwapTotal(order): number

The total paid for swaps. May be negative in case of negative swap difference.

Parameters

Name Type Description
order Order the order to calculate swap total for

Returns

number

the swap total

Defined in

packages/medusa/src/services/totals.ts:175


getTaxTotal

getTaxTotal(cartOrOrder, forceTaxes?): Promise<null | number>

Calculates tax total Currently based on the Danish tax system

Parameters

Name Type Default value Description
cartOrOrder Cart | Order undefined cart or order to calculate tax total for
forceTaxes boolean false whether taxes should be calculated regardless of region settings

Returns

Promise<null | number>

tax total

Defined in

packages/medusa/src/services/totals.ts:349


getTotal

getTotal(cartOrOrder, options?): Promise<number>

Calculates total of a given cart or order.

Parameters

Name Type Description
cartOrOrder Cart | Order object to calculate total for
options GetTotalsOptions options to calculate by

Returns

Promise<number>

the calculated subtotal

Defined in

packages/medusa/src/services/totals.ts:137


rounded

rounded(value): number

Rounds a number using Math.round.

Parameters

Name Type Description
value number the value to round

Returns

number

the rounded value

Defined in

packages/medusa/src/services/totals.ts:1055


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:31


withTransaction

withTransaction(transactionManager?): TotalsService

Parameters

Name Type
transactionManager? EntityManager

Returns

TotalsService

Inherited from

TransactionBaseService.withTransaction

Defined in

packages/medusa/src/interfaces/transaction-base-service.ts:14