How to use 'appStoreReceiptURL' to obtain players' paid purchase information and the purchased version

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Created Oct ’24

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The application has changed from paid purchase to free use. We need to obtain the previous player's purchase records to unlock the paid content.

//Here is the code for the client to obtain the player's payment information:

NSURL * receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];
if ([[NSFileManager defaultManager] fileExistsAtPath:[receiptURL path]]){
    
    NSData *receiptData = [NSData dataWithContentsOfURL:receiptURL];
    NSString *receiptUrlString = [receiptData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
    NSLog(@"requestAppStoreReceipt receiptUrlString = %@", receiptUrlString);
} else {
    // 如果凭证为空，则再发一次凭证请求
    SKReceiptRefreshRequest *refreshReceiptRequest = [[SKReceiptRefreshRequest alloc] initWithReceiptProperties:@{}];
    refreshReceiptRequest.delegate = self;
    [refreshReceiptRequest start];
    NSLog(@"requestAppStoreReceipt 如果凭证为空，则再发一次凭证请求！");
}

//The following is the server-side parsing code:

    Path filePath = Path.of("SubscriptionKey_ABCDEFGHIJ.p8");
    String encodedKey = Files.readString(filePath);
    Environment environment = Environment.SANDBOX;
    AppStoreServerAPIClient client = new AppStoreServerAPIClient(encodedKey, keyId, issuerId, bundleId, environment);
    String appReceipt = "MIIcs...";
    ReceiptUtility receiptUtil = new ReceiptUtility();
    String transactionId = receiptUtil.extractTransactionIdFromTransactionReceipt(transactionReceipt);
    System.out.println(transactionId);
    if (transactionId != null) {
        long now = System.currentTimeMillis();
        TransactionHistoryRequest request = new TransactionHistoryRequest()
                .sort(TransactionHistoryRequest.Order.DESCENDING)
                .revoked(false)
                .productTypes(List.of(TransactionHistoryRequest.ProductType.CONSUMABLE));
        HistoryResponse response = null;
        List<String> transactions = new LinkedList<>();
        do {
            String revision = response != null ? response.getRevision() : null;
            response = client.getTransactionHistory(transactionId, revision, request, GetTransactionHistoryVersion.V2);
            transactions.addAll(response.getSignedTransactions());
        } while (response.getHasMore());
        Set<InputStream> rootCAs = Set.of(
                new FileInputStream("AppleComputerRootCertificate.cer"),
                new FileInputStream("AppleIncRootCertificate.cer"),
                new FileInputStream("AppleRootCA-G2.cer"),
                new FileInputStream("AppleRootCA-G3.cer")
        );
        Long appAppleId = 1234567899L; // appAppleId must be provided for the Production environment
        System.out.println(transactions.size());
        SignedDataVerifier signedPayloadVerifier = new SignedDataVerifier(rootCAs, bundleId, appAppleId, environment, true);
        for (String notificationPayload : transactions) {
            try {
                AppTransaction payload = signedPayloadVerifier.verifyAndDecodeAppTransaction(notificationPayload);
                System.out.println(payload);
            } catch (VerificationException e) {
                e.printStackTrace();
            }
        }
    }

//Return result analysis: JWSTransactionDecodedPayload{originalTransactionId='2000000641683476', transactionId='2000000641683476', webOrderLineItemId='null', bundleId='', productId='', subscriptionGroupIdentifier='null', purchaseDate=1719566962000, originalPurchaseDate=1719566962000, expiresDate=null, quantity=1, type='Consumable', appAccountToken=null, inAppOwnershipType='PURCHASED', signedDate=1728885967093, revocationReason=null, revocationDate=null, isUpgraded=null, offerType=null, offerIdentifier='null', environment='Sandbox', storefront='CHN', storefrontId='143465', transactionReason='PURCHASE', price=6000, currency='CNY', offerDiscountType='null', unknownFields=null}

We have develop according to the following document on our end： https://developer.apple.com/documentation/foundation/nsbundle/1407276-appstorereceipturl#4098404 https://developer.apple.com/documentation/appstoreserverapi/get_transaction_info/ https://developer.apple.com/documentation/appstoreserverapi/data_types

We would like to know if the solutions in the document can be used to solve the problems we encountered? Is there a problem with our method of parsing bills that prevents us from obtaining the necessary information?

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