Webhook-sample.js

module.exports = async function (context, req) {
    context.log('Executing Webhook endpoint...');

    // Validate the subscription creation
    if (req.query.validationToken) {
        context.log('Validating new subscription...');
        context.log('Validation token:');
        context.log(req.query.validationToken);
        context.res = {
            headers: {
                'Content-Type': 'text/plain'
            },
            body: req.query.validationToken
        };
    }
    else {
        context.log('Received new notification...');
        context.log('Notification: ');
        context.log(JSON.stringify(req.body));
        context.res = { body: "" };
    }
};