promotion-condition
PromotionCondition
PromotionConditions are used to create Promotions. The purpose of a PromotionCondition
is to check the order against a particular predicate function (the check
function) and to return
true
if the Order satisfies the condition, or false
if it does not.
Signature
class PromotionCondition<T extends ConfigArgs = ConfigArgs, C extends string = string, R extends CheckPromotionConditionResult = any> extends ConfigurableOperationDef<T> {
readonly readonly priorityValue: number;
code: C
constructor(config: PromotionConditionConfig<T, C, R>)
async check(ctx: RequestContext, order: Order, args: ConfigArg[], promotion: Promotion) => Promise<R>;
}
Extends
Members
priorityValue
property
type:
number
default:
0
Used to determine the order of application of multiple Promotions
on the same Order. See the Promotion
priorityScore
field for
more information.
code
property
type:
C
constructor
method
type:
(config: PromotionConditionConfig<T, C, R>) => PromotionCondition
check
method
type:
(ctx: RequestContext, order: Order, args: ConfigArg[], promotion: Promotion) => Promise<R>
This is the function which contains the conditional logic to decide whether
a Promotion should apply to an Order. See CheckPromotionConditionFn.
PromotionConditionConfig
This object is used to configure a PromotionCondition.
Signature
interface PromotionConditionConfig<T extends ConfigArgs, C extends string, R extends CheckPromotionConditionResult> extends ConfigurableOperationDefOptions<T> {
code: C;
check: CheckPromotionConditionFn<T, R>;
priorityValue?: number;
}
Extends
Members
code
property
type:
C
check
property
type:
CheckPromotionConditionFn<T, R>
priorityValue
property
type:
number
CheckPromotionConditionFn
A function which checks whether or not a given Order satisfies the PromotionCondition.
The function should return either a boolean
or and plain object type:
false
: The condition is not satisfied - do not apply PromotionActionstrue
: The condition is satisfied, apply PromotionActions{ [key: string]: any; }
: The condition is satisfied, apply PromotionActions and pass this object into the PromotionAction’sstate
argument.
Signature
type CheckPromotionConditionFn<T extends ConfigArgs, R extends CheckPromotionConditionResult> = (
ctx: RequestContext,
order: Order,
args: ConfigArgValues<T>,
promotion: Promotion,
) => R | Promise<R>