iOS Code

Please be mindful. This page is almost very similar but different than the last page. Differences in service account, code, package.json.

These codes will allow you to acknowledge and verify purchases or subscriptions. There is 1 call for each type of transaction.

1. To get started, go to console.google.cloud.com/functions

2. Click Create Function

3. Give your new function a meaningful name

verifyiOSPurchase should be the name you use here

4. Save the trigger type

5. Copy the code below and click the blue "next" button

Copy Me

androidPurchaseHandler.

  const axios = require("axios");
  const functions = require("firebase-functions");
  const admin = require("firebase-admin");
  admin.initializeApp();
  
exports.verifyiOSPurchase = functions.https.onRequest((req, res) => {


  const {transactionID, testing, password} = req.body;
  const url = testing ? "https://sandbox.itunes.apple.com/verifyReceipt" : "https://buy.itunes.apple.com/verifyReceipt";
  functions.logger.info(`Verifying iOS purchase with transactionID: ${transactionID}\nTesting is occuring: ${testing} for user ${userID}`);

  const data = JSON.stringify({
    "receipt-data": transactionID,
    "password": password,
    "exclude-old-transactions": true,
  });

  const config = {
    method: "post",
    url: url,
    headers: {
      "Content-Type": "application/json",
    },
    data: data,
  };

  axios(config)
      .then(function(response) {
        res.json(response.data).status(200);
      })
      .catch(function(error) {
        functions.logger.log(error);
        res.send(error).status(500);
      });
});

6. Clear the default and paste the copied code into the code

7. Update the package.json file

copy and paste this over the default code

{
  "name": "sample-http",
  "version": "0.0.1",
  "dependencies": {
     "axios": "^0.26.0",
     "firebase-functions": "^3.18.0",
     "firebase-admin": "^10.0.2"
   }
}

8. Set the name of the functions entry point

the name used here should match the name used in Step 3 above

9. Deploy the function

10. Set function invocation privacy permissions

This allows any device with your endpoint URL the ability to verify purchases made via your app

1. Go to https://console.cloud.google.com/functions/list

2. Select the function you want to make public. (the function you just created)

3. Click the Permissions tab.

4. Click Add Principle

5. In the Add members field, type allUsers

6. Select the Cloud Function Invoker role from the Select a role drop-down menu.

7. Click Add.