@cxco/sdk-webhooks
v1.2.2
Published
DigitalCX Webhook library
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DigitalCX - Webhook helpers
The sdk-webhooks is a package that wraps DigitalCX webhooks inbound and outbound payloads into simple javascript objects. It supports Validation, Transaction and Context Variable webhooks.
Install and usage
Run npm install @cxco/sdk-webhooks
Then you can use the three main classes:
ValidationResponse
for handling validation webhooksTransactionResponse
for handling transaction (end slot) webhooksContextResponse
for handling Context Variable webhooks
For instance in an express route handlers to extract 3 digits from the user input you could do:
const { ValidationResponse } = require('@cxco/sdk-webhooks')
const matchThreeNumbers = require('./utils/matchThreeNumbers')
/**
* Express middleware to handle the validation webhook and find 3 numbers in the user input
*
* @param {object} req
* @param {object} res
* @param {function} next
*/
module.exports = function findThreeNumbers (req, res, next) {
try {
// make sure the req.body JSON has already been parsed with the body-parse middleware
const slot = new ValidationResponse(req.body)
// make sure we are validating the current slot
if (slot.isCurrentSlot) {
const match = matchThreeNumbers(input)
if (match !== '') {
// this will set the value to the matched numbers
// and set the status of the slot to 'done'
slot.setValue(match)
}
}
// return the payload using the toModel method
res.send(slot.toModel())
} catch (error) {
// call the error handling middleware
next(error)
}
}
ValidationResponse
const slot = new ValidationResponse(req.body)
// check if it is the initial response
slot.initialRequest // boolean
// check if it si the current slot that is being validated
slot.isCurrentSlot // boolean
// set the value of the slot
slot.setValue('new value') // will also set the status to 'done'
// add to the metadata
slot.metadata.foo = 'bar'
// build the required response payload
slot.toModel()
Mock functions
There are three mock functions available to test your webhooks:
mockSlot
will mock the configuration of a slot including the set value, status and metadata.mockValidationPayload
to mock the full validation webhook payload. UsesmockSlot
to define thepayload.slot
object.mockTransationPayload
to mock the full transaction webhook payload. UsesmockSlot
to define the elements inpayload.slots
array.
You can use them in your tests like so:
const { mocks, ValidationResponse } = require('@cxco/sdk-webhooks').
describe('isCurrentSlot', () => {
it('is true when the current slot is the active one', () => {
const payload = mocks.mockValidationPayload({
inputSlotName: 'the current slot',
slot: mocks.mockSlot({ name: 'the current slot' })
})
const instance = new ValidationResponse(payload)
expect(instance.isCurrentSlot).toBe(true)
})
it('is false when current slot is not the active one', () => {
const payload = mocks.mockValidationPayload({
inputSlotName: 'the current slot',
slot: mocks.mockSlot({ name: 'another slot' })
})
const instance = new ValidationResponse(payload)
expect(instance.isCurrentSlot).toBe(false)
})
})
ContextResponse
ContextResponse wraps the inbound payload. The function setOutboundContextVariable
sets the value for a given context.
const { ContextResponse } = require('@cxco/sdk-webhooks')
//...
app.post('/context', function (req, res) {
const cxtResponse = new ContextResponse(req.body)
cxtResponse.setOutboundContextVariable("season", "summer")
// build the required response payload and send as an answer
res.send(cxtResponse.toModel())
})