Forever Receipt

import requests, os

def issue_forever_receipt(order):
    response = requests.post(
        'https://api.healchain.org/issue-forever-receipt',
        headers={
            'Authorization': f'Bearer {os.environ["HEALCHAIN_API_KEY"]}',
            'Content-Type': 'application/json'
        },
        json={
            'orderId':       order['id'],
            'vendorName':    'Your Store Name',
            'customerEmail': order['customer_email'],
            'total':         order['total'],
            'currency':      order.get('currency', 'USD'),
            'items': [{
                'name':     i['name'],
                'quantity': i['quantity'],
                'price':    i['price']
            } for i in order['items']],
            'paymentMethod': order.get('payment_method')
        }
    )
    result = response.json()
    if not result['success']:
        raise Exception(result['error'])
    return result

function issueForeverReceipt($order) {
    $ch = curl_init('https://api.healchain.org/issue-forever-receipt');
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_POST           => true,
        CURLOPT_HTTPHEADER     => [
            'Authorization: Bearer ' . getenv('HEALCHAIN_API_KEY'),
            'Content-Type: application/json'
        ],
        CURLOPT_POSTFIELDS => json_encode([
            'orderId'       => $order['id'],
            'vendorName'    => 'Your Store Name',
            'customerEmail' => $order['customer_email'],
            'total'         => $order['total'],
            'currency'      => $order['currency'] ?? 'USD',
            'items'         => array_map(fn($i) => [
                'name'     => $i['name'],
                'quantity' => $i['quantity'],
                'price'    => $i['price']
            ], $order['items'])
        ])
    ]);
    $result = json_decode(curl_exec($ch), true);
    curl_close($ch);
    return $result;
}

// Add to Shopify → Settings → Checkout → Additional scripts
fetch('https://api.healchain.org/issue-forever-receipt', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    orderId:       '{{ order.order_number }}',
    vendorName:    '{{ shop.name }}',
    customerEmail: '{{ customer.email }}',
    total:         {{ order.total_price | divided_by: 100.0 }},
    currency:      '{{ order.currency }}',
    items: [
      {% for line_item in order.line_items %}
      {
        name:     '{{ line_item.title }}',
        quantity: {{ line_item.quantity }},
        price:    {{ line_item.price | divided_by: 100.0 }},
        sku:      '{{ line_item.sku }}'
      }{% unless forloop.last %},{% endunless %}
      {% endfor %}
    ],
    paymentMethod: '{{ order.gateway }}'
  })
});

// Add to functions.php or a custom plugin
add_action('woocommerce_payment_complete', 'issue_healchain_receipt');

function issue_healchain_receipt($order_id) {
    $order = wc_get_order($order_id);
    $items = [];
    foreach ($order->get_items() as $item) {
        $items[] = [
            'name'     => $item->get_name(),
            'quantity' => $item->get_quantity(),
            'price'    => $item->get_total() / $item->get_quantity()
        ];
    }
    $result = wp_remote_post('https://api.healchain.org/issue-forever-receipt', [
        'headers' => [
            'Authorization' => 'Bearer ' . get_option('healchain_api_key'),
            'Content-Type'  => 'application/json'
        ],
        'body' => json_encode([
            'orderId'       => (string) $order_id,
            'vendorName'    => get_bloginfo('name'),
            'customerEmail' => $order->get_billing_email(),
            'total'         => (float) $order->get_total(),
            'currency'      => get_woocommerce_currency(),
            'items'         => $items
        ])
    ]);
    $data = json_decode(wp_remote_retrieve_body($result), true);
    if ($data['success']) {
        $order->add_order_note('HealChain Forever Receipt: ' . $data['viewUrl']);
    }
}