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verifyReceipt.ts
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verifyReceipt.ts
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import fetch, { Response } from 'node-fetch'
import { VerifyReceiptRequestBody } from './VerifyReceiptRequestBody.js'
import { VerifyReceiptErrorStatus, VerifyReceiptResponseBody } from './VerifyReceiptResponseBody.js'
const PRODUCTION_URL = 'https://buy.itunes.apple.com/verifyReceipt'
const SANDBOX_URL = 'https://sandbox.itunes.apple.com/verifyReceipt'
async function request (url: string, body: VerifyReceiptRequestBody): Promise<VerifyReceiptResponseBody | Response> {
const response = await fetch(url, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(body),
})
if (!response.ok) {
throw new VerifyReceiptFetchError('Fetch error', response)
}
return await response.json() as VerifyReceiptResponseBody | Response
}
/**
* Function to verifyReceipt receipts via Apple servers.
*
* @param {VerifyReceiptRequestBody} payload
* @return {Promise<VerifyReceiptResponseBody>}
*
* @throws {VerifyReceiptFetchError}
*/
export async function verifyReceipt (payload: VerifyReceiptRequestBody): Promise<VerifyReceiptResponseBody> {
let result = await request(PRODUCTION_URL, payload)
if (result.status === VerifyReceiptErrorStatus.USE_TEST_ENVIRONMENT) {
result = await request(SANDBOX_URL, payload)
}
return result
}
/**
* Error class for not OK responses.
*/
export class VerifyReceiptFetchError extends Error {
public originalResponse: Response
constructor (message: string, response: Response) {
super(message)
this.name = 'VerifyReceiptFetchError'
this.originalResponse = response
}
}