Gr4vy for React Native

Embed Gr4vy in your React Native app to store card details, authorize payments, and capture a transaction.

Installation

yarn add @gr4vy/embed-react-native
# OR
npm install @gr4vy/embed-react-native

Usage

import EmbedReactNative, { EmbedReactNativeEventEmitter, Gr4vyEvent } from '@gr4vy/embed-react-native';

// Listen to events coming from Gr4vy Embed when launched

const onEvent = (event: Gr4vyEvent) => {
  const { name, data } = event
  console[name === 'generalError' ? 'error' : 'log'](name, data)
}

useEffect(() => {
  const onEventSubscription = EmbedReactNativeEventEmitter.addListener(
    'onEvent',
    onEvent
  )

  return () => {
    onEventSubscription.remove()
  }
}, [])

// Launch Gr4vy Embed

const handleCheckout = () => {
  EmbedReactNative.showPaymentSheet({
    gr4vyId: '[GR4VY_ID]',
    environment: 'sandbox',
    token: '[TOKEN]',
    amount: 1299,
    currency: 'USD',
    country: 'US',
    merchantAccountId: 'my-merchant-id', // optional for multi merchant instances
    ...
  })
}

<Button onClick={handleCheckout}>Pay</Button>

Note: Replace [GR4VY_ID] and [TOKEN] with the ID of your instance and JWT access token. See any of our server-side SDKs for more details.

Configuration

The options passed to showPaymentSheet via the configuration object are as follows.

Key	Default value	Description
gr4vyId	null	Required - The library automatically sets the API host to api.<gr4vyId>.gr4vy.app and Embed UI host to embed.<gr4vyId>.gr4vy.app for production, api.sandbox.<gr4vyId>.gr4vy.app and embed.sandbox.<gr4vyId>.gr4vy.app for the sandbox environment.
environment	production	The environment for the request. Can be sandbox or production.
token	null	Required - The server-side generated JWT token used to authenticate any of the API. calls.
amount	null	Required - The amount to authorize or capture in the specified currency.
currency	null	Required - A valid, active, 3-character ISO 4217 currency code to authorize or capture the amount for.
country	null	Required A valid ISO 3166 country code.
buyerId	null	An optional ID for a Gr4vy buyer. The transaction will automatically be associated to a buyer with that ID. If no buyer with this ID exists then it will be ignored.
buyerExternalIdentifier	null	An optional external ID for a Gr4vy buyer. The transaction will automatically be associated to a buyer with that external ID. If no buyer with this external ID exists then it will be ignored. This option is ignored if the buyerId is provided.
externalIdentifier	null	An optional external identifier that can be supplied. This will automatically be associated to any resource created by Gr4vy and can subsequently be used to find a resource by that ID.
store	ask	'ask', true, false - Explicitly store the payment method or ask the buyer, this is used when a buyerId or buyerExternalIdentifier is provided.
display	all	all, addOnly, storedOnly, supportsTokenization - Filters the payment methods to show stored methods only, new payment methods only or methods that support tokenization.
intent	authorize	authorize, capture - Defines the intent of this API call. This determines the desired initial state of the transaction.
metadata	null	An optional object of key/values for transaction metadata. All values should be a string.
paymentSource	null	installment, moto, recurring - Can be used to signal that Embed is used to capture the first transaction for a subscription or an installment. When used, store is implied to be true and display is implied to be supportsTokenization. This means that payment options that do not support tokenization are automatically hidden.
applePayMerchantId	null	The Apple merchant ID to be used for Apple Pay transactions.
cartItems	null	An optional array of cart item objects, each object must define a name, quantity, and unitAmount. Other optional properties are discountAmount, taxAmount, externalIdentifier, sku, productUrl, imageUrl, categories and productType.
theme	null	Theme customisation options See Theming Options. The SDK also contains an additional two properties within the colors object: headerBackground and headerText. These are used for the navigation background and foreground colors.
locale	null	An optional locale, this consists of a ISO 639 Language Code followed by an optional ISO 3166 Country Code, e.g. en, en-gb or pt-br.
statementDescriptor	null	An optional object with information about the purchase to construct the statement information the buyer will see in their bank statement. Please note support for these fields varies across payment service providers and underlying banks, so Gr4vy can only ensure a best effort approach for each supported platform. As an example, most platforms will only support a concatenation of name and description fields, truncated to a length of 22 characters. The object can contain name, description, phoneNumber, city and url keys, with string values. phoneNumber should be in E164 format. Gr4vy recommends avoiding characters outside the alphanumeric range and the dot (.) to ensure wide compatibility.
requireSecurityCode	false	An optional boolean which forces security code to be prompted for stored card payments.
shippingDetailsId	null	An optional unique identifier of a set of shipping details stored for the buyer.
merchantAccountId	null	An optional merchant account ID.
connectionOptions	null	An optional set of values passed to a connection when processing a transaction (see https://docs.gr4vy.com/reference/transactions/new-transaction)
buyer	null	An optional object to represent the buyer (personal details, billing details, and shipping information). This cannot be used in conjunction with buyerId or buyerExternalIdentifier.
debugMode	false	true, false - Prints useful debug information to the console.

Events

The library uses event emitters to send specific events happening in Embed back to the consumer (a React Native app). The object EmbedReactNativeEventEmitter can be imported and used to listen to such events.

useEffect(() => {
  // Add the listener
  const onEventSubscription = EmbedReactNativeEventEmitter.addListener(
    'onEvent',
    (event: Gr4vyEvent) => console.log(event)
  )

  return () => {
    // Remove the listener on cleanup
    onEventSubscription.remove()
  }
}, [])

The following events are emitted:

generalError

Returns data containing the message of an error that has occurred.

{
  "name": "generalError",
  "data": {
    "message": "Gr4vy Error: Failed to load"
  }
}

cancelled

Returned when the user cancels the SDK.

{
  "name": "cancelled",
  "data": {
    "message": "User cancelled"
  }
}

transactionCreated

Returns data about a successfully created transaction.

{
  "name": "transactionCreated",
  "data": {
    "success": true,
    "transactionId": "...",
    "status": "capture_succeeded",
    "paymentMethodId": "...",
    "approvalUrl": "https://example.com"
  }
}

transactionFailed

Returns data about a failed transaction.

{
  "name": "transactionFailed",
  "data": {
    "success": false,
    "transactionId": "...",
    "status": "authorization_failed",
    "paymentMethodId": "..."
  }
}

Apple Pay

To enable Apple Pay in your iOS project, in addition to passing the applePayMerchantId configuration option to the showPaymentSheet function, you'll also need to enable Apple Pay within the Signing & Capabilities Xcode project settings and set the Apple Pay Merchant IDs. Please ensure your provisioning profiles and signing certificates are updated to contain this valid Apple Merchant ID. The SDK will do various checks to ensure the device is capable of Apple Pay and will be enabled if both the device and merchant IDs are valid.

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.