小编Aks*_*ksh的帖子

我一直在考虑在Google API通过以下方式验证购买后直接用于奖励用户（更新 firestore 上的用户数据）：

GET https://www.googleapis.com/androidpublisher/v3/applications/packageName/purchases/products/productId/tokens/token

但授权步骤有些棘手。我如何使用我从你们之一那里得到的云功能来实现它：

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const {google} = require("googleapis");
const publisher = google.androidpublisher('v2');
const authClient = new google.auth.JWT({
    email: 'Service Account Email',
    key: 'BEGIN PRIVATE KEY*************END PRIVATE KEY',
    scopes: ['https://www.googleapis.com/auth/androidpublisher']
});
admin.initializeApp();

exports.validatePurchases = functions.database
    .ref('/purchases/{uId}/{orderId}')
    .onCreate((event, context) => {
        const purchase = event.val();
        if (purchase.is_processed === true) {
            console.log('Purchase already processed!, exiting');
            return null;
        }
        const orderId = context.params.orderId;
        const dbRoot = event.ref.root;
        const package_name = purchase.package_name; …