React-native-iap: How to handle auto renewable subscriptions?

[kelokchan]

Version of react-native-iap

4.4.9

Version of react-native

0.61.5

Platforms you faced the error (IOS or Android or both?)

iOS

Expected behavior

Actual behavior

Tested environment (Emulator? Real Device?)

Sandbox environment

Steps to reproduce the behavior

I have the below code snippet to handle subscription purchase

// On button press
requestPurchase(sku);

// Purchase updated listener
this.purchaseUpdateSubscription = purchaseUpdatedListener((purchase) => {
      console.log('purchaseUpdatedListener', purchase);
      const receipt = purchase.transactionReceipt;
      await finishTransaction(purchase);
      await Firebase.updateUser({
        'subscription.ios': purchase
      })
    });

So far I was able to perform purchase and store the receipt onto Firebase. But my question is do I need to call getAvailablePurchases on every app launch to store the latest purchase receipt? Or do I only need to store the receipt when the user purchases the subscription for the first time? Also, how do I validate if the subscription has expired?

[hakkikonu]

I'am also wondering this approach. How can I validate if the subscription has expired? Should I check getAvailablePurchases() everytime?

[ziyoshams]

This is usually done using webhooks. For Apple you can enable server-to-server notifications that will communicate with your server. Google has something similar, but setting it up is much more complicated and there is no docs on that. Android Developers has a basic doc here, but what you want is a Pub/Sub system that google has.

Also this StackOverflow question has some good information

UPDATE
I actually found a good source that will help you to set up server-to-server notifications. RevenueCat Docs has a lot of useful information. Here is the link for Apple and Google Pub/Sub

[camel113]

To validate if the subscription I'm doing that

const result = await validateReceiptIos(receiptBody, true);
const lastSubscriptionBasic = result.latest_receipt_info
        .filter(item => item.product_id === "subscription_basic") // keep only the "subscription_basic" subscriptions
        .sort((a, b) => b.expires_date_ms - a.expires_date_ms)[0]; // sort by expiration date and get the first one
const isSubscriptionBasicValid = lastSubscriptionBasic.expires_date_ms > moment() // check if expiration date is before now

[daithinh2401]

Hi @camel113, can you please explain what is the receiptBody, how can i correctly pass it to validateReceiptIos() ? Because I see it's type is Record<string, unknown>, not just a String
And how to work on Android ?

[stale[bot]]

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[stale[bot]]

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