How to Create an Affiliate Program with Drupal | AffiliateBase

composer require affiliatebase/sdk

<?php
// modules/custom/affiliatebase/affiliatebase.module
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_alter().
 */
function affiliatebase_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if ($form_id == 'commerce_checkout_flow') {
    $form['#attached']['library'][] = 'affiliatebase/tracking';
  }
}

/**
 * Implements hook_commerce_order_place().
 */
function affiliatebase_commerce_order_place($order) {
  $api_key = \Drupal::config('affiliatebase.settings')->get('api_key');
  
  $data = [
    'orderId' => $order->id(),
    'amount' => $order->getTotalPrice()->getNumber(),
    'customerId' => $order->getCustomerId(),
  ];
  
  // Send to AffiliateBase API
  $client = \Drupal::httpClient();
  $client->post('https://api.affiliatebase.com/track-conversion', [
    'headers' => [
      'Content-Type' => 'application/json',
      'Authorization' => 'Bearer ' . $api_key,
    ],
    'json' => $data,
  ]);
}