Introduction

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Process Steps on Google Cloud Console and Wallet Console

1. Enable the Wallet API. Follow steps in this video: https://www.youtube.com/watch?v=yQyxrhJ12vI
   • Sign in to Google Cloud Console: https://console.cloud.google.com.
   • Create a new project called FDI Healthcare on TfwTech.
   • Select the new project, search for Google Wallet API and enable it.
2. Create a Service Account. Follow steps in this video: https://www.youtube.com/watch?v=TsOWnk1S-aY
   • Sign in to the Google Cloud Console: https://console.cloud.google.com.
   • Select the new project, the select the option “IAM & admin”.
   • Select “Service Accounts”, then create a new service account:
     • Service account name: “serv acc for FDI“
     • Email: serv-acc-fdi@fdi-healthcare-on-tfwtech.iam.gserviceaccount.com
   • On the Service Accounts page, under the Action column, click the 3 dots and select ‘Manage Keys’.
     • Click ‘ADD KEY’ and select JSON type.
     • The service account key file is saved to MJ1900:\projs\60-tf-practice\22-commerce\02-key
3. Log in Google Pay & Wallet Console to create FDI Healthcare business
   • https://pay.google.com/business/console/info/BCR2DN4T2OYJZ2BE
   • Create the business FDI Healthcare which contains the Business Profile and Business Information
     • Merchant ID is BCR2DN4T2OYJZ2BE
     • Under Google Wallet API section, click ‘Create a pass’ which redirects to the ‘pass’ page
     • Click the button ‘Build your first pass’
     • Mark down the issuer ID: 3388000000022796818
4. Authorize Service Account in the Wallet Console. Follow steps in https://www.youtube.com/watch?v=81RA7fDJV8I
   • In the Pay & Wallet Console, click ‘Users’ on the left menu.
   • Click ‘Invite a user’.
   • Add in the email address of the Service Account in Step 2 and set Access Level to ‘Developer’.
   • Click ‘Google Wallet API’ on the left memu, then click ‘Create a class’ to create a ‘loyalty’ class.
5. Create the Loyalty class:
   • Issuer Name = FDI Loyalty Prog
   • Class ID = fdi-loyalty-prog-issuer-01
   • Status = UNDER_REVIEW
   • Country Code = HK
   • Logo Image URL = https://tfwtech.com/publi/images/fdi_logo.png
   • Programme name = Prog_Name_01
   • Make sure the site https://tfwtech.com/publi is PUBLIC otherwise the class creation will fail.
   • If changes in the class details are necessary later, this can be done through the Edit button for each section of the class.

Process Steps on WordPress

<?php
require get_stylesheet_directory() . '/passes/google/demo_loyalty.php';

$wpUserId = get_current_user_id();

if ($wpUserId != 0) {
	$googleLoyalty = new DemoLoyalty();

	$jwtLink = $googleLoyalty->createJwtNewObjects(
    '3388000000022796818', // issserID specified in step 3
    'fdi-loyalty-prog-issuer-01', // classSuffix specified in step 4.
    $wpUserId, // a unique suffix of your choice for your loyalty object
	); 

	echo "<br>The JWT Link: ". $jwtLink. "<br>";
	?>
	<div style="width: 150px; margin: 30px; text-align=center;">
	<a href="<?=$jwtLink?>" target="blank"><img src="/wp-content/uploads/2024/10/Add_to_Google_Wallet_badge.svg.png" alt="Add_to_Google_Wallet_badge"></a>
	</div>
	<?php
} 

Get Pass Class / Object details using GET API

• VS Code Thunder App
• OAuth 2 – Google OAuth consent screen

Reference

1. How to add ‘Add to Wallet’ button to website to add coupons to Apple Wallet and Google Pay accounts – StackOverflow
   • Follow the answer by Christos Papoulas
2. Get-started from Google – https://developers.google.com/wallet#get-started
3. PHP examples from Google – https://github.com/google-wallet/rest-samples/tree/main/php
4. Google Wallet API – https://developers.google.com/wallet/reference/rest
5. Setup Google OAuth sign in – https://www.youtube.com/watch?v=tgO_ADSvY1I&t=14s