1const webhookSecretKey = "<WebhookSecretKey>";
 2
 3exports.webhook = functions.https.onRequest((request, response) => {
 4  const requestRawBody = request.rawBody.toString("utf-8");
 5  const crypto = require("crypto");
 6  const sig = "Signature " + crypto
 7      .createHash("sha1")
 8      .update(requestRawBody + webhookSecretKey)
 9      .digest("hex");
10  if (request.headers.authorization !== sig) {
11    response.status(401).send();
12    return;
13  }
14
15  // TODO Replace this block with your game's logic for purchases handling
16  switch (request.body.notification_type) {
17    case "order_paid": {
18      const userId = request.body.user.external_id;
19      const skus = request.body.items.map(function(it) {
20        return it.sku;
21      }).join(", ");
22      const price =
23          `${request.body.order.amount} ${request.body.order.currency}`;
24      functions.logger.log(
25          "Order Paid\n",
26          `A user ${userId} has just paid ${price} for ${skus}\n`,
27          "Full Data\n",
28          request.body
29      );
30      break;
31    }
32    case "order_canceled": {
33      const userId = request.body.user.external_id;
34      const orderId = request.body.order.id;
35      functions.logger.log(
36          "Order Canceled\n",
37          `A user ${userId} has just canceled order ${orderId}\n`,
38          "Full Data\n",
39          request.body
40      );
41      break;
42    }
43  }
44
45  response.status(204).send();
46});

 1const webhookSecretKey = "<WebhookSecretKey>";
 2
 3module.exports = async function (context, request) {
 4    const requestRawBody = request.rawBody.toString("utf-8");
 5    const crypto = require("crypto");
 6    const sig = "Signature " + crypto
 7        .createHash("sha1")
 8        .update(requestRawBody + webhookSecretKey)
 9        .digest("hex");
10    if (request.headers.authorization !== sig) {
11        context.res = {
12            status: 401
13        };
14        return;
15    }
16
17    // TODO Replace this block with your game's logic for purchases handling
18    switch (request.body.notification_type) {
19        case "order_paid": {
20            const userId = request.body.user.external_id;
21            const skus = request.body.items.map(function (it) {
22                return it.sku;
23            }).join(", ");
24            const price =
25                `${request.body.order.amount} ${request.body.order.currency}`;
26            context.log(
27                "Order Paid\n" +
28                `A user ${userId} has just paid ${price} for ${skus}\n` +
29                "Full Data\n" +
30                JSON.stringify(request.body)
31            );
32            break;
33        }
34        case "order_canceled": {
35            const userId = request.body.user.external_id;
36            const orderId = request.body.order.id;
37            context.log(
38                "Order Canceled\n" +
39                `A user ${userId} has just canceled order ${orderId}\n` +
40                "Full Data\n" +
41                JSON.stringify(request.body)
42            );
43            break;
44        }
45    }
46
47    context.res = {
48        status: 204
49    };
50}