commerce_braintree_vzero.module

<?php

/**
 * @file
 * Braintree VZero integration for Drupal Commerce
 * Developed by @DeveloperSteve from @Braintree_Dev
 */


/**
 * Implements hook_commerce_payment_method_info().
 */
function commerce_braintree_vzero_commerce_payment_method_info() {
  $payment_methods = array();

  $payment_methods['commerce_braintree_vzero'] = array(
    'title' => t('Accept Credit Card and PayPal via Braintree V.Zero'),
    'short_title' => t('VZero'),
    'base' => 'commerce_braintree_vzero',
    'description' => t('Using Braintree V.Zero to facilitate payments.'),
    'active' => TRUE,
    'terminal' => FALSE,
    'offsite' => FALSE,
    'offsite_autoredirect' => FALSE,
  );

  return $payment_methods;
}

function commerce_braintree_vzero_default_settings() {
  return array(
    'merchant_id' => '',
    'public_key' => '',
    'private_key' => '',
    'custom_field' => '',
    'environment' => 'sandbox'
  );
}

/**
 * Payment method callback: Braintree Transparent Redirect settings form.
 */
function commerce_braintree_vzero_settings_form($settings = array()) {
  $form = array();

  $settings = (array) $settings + commerce_braintree_vzero_default_settings();

  $form['merchant_id'] = array(
    '#type' => 'textfield',
    '#title' => t('Merchant ID'),
    '#default_value' => $settings['merchant_id'],
    '#required' => TRUE,
    '#prefix' => '<p>Populate these fields using the credentials found in the <a href="https://sandbox.braintreegateway.com" target="blank">Braintree Sandbox</a>.</p><p>The credentials are found in "My User" under "Account" in the top right, then "API Keys" under "Authorization".</p>',
  );
  $form['public_key'] = array(
    '#type' => 'textfield',
    '#title' => t('Public key'),
    '#default_value' => $settings['public_key'],
    '#required' => TRUE,
  );
  $form['private_key'] = array(
    '#type' => 'textfield',
    '#title' => t('Private key'),
    '#default_value' => $settings['private_key'],
    '#required' => TRUE,
  );
  $form['custom_field'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field name - json string'),
    '#description' => t('Stores the cart data in a json string as part of the Braintree transaction, this needs to be set in settings > processing then under custom fields'),
    '#default_value' => $settings['custom_field'],
    '#required' => FALSE,
  );
  $form['environment'] = array(
    '#type' => 'radios',
    '#title' => t('Braintree Environment'),
    '#options' => array(
      'sandbox' => ('Sandbox - For testing (not for building sandcastles)'),
      'production' => ('Production - For going live (and still probably not for sandcastles)'),
    ),
    '#default_value' => $settings['environment'],
  );

  return $form;
}

function commerce_braintree_vzero_initialize($payment_method) {
  require_once drupal_get_path('module', 'commerce_braintree_vzero') . '/braintree_php/lib/Braintree.php';

  Braintree_Configuration::merchantId($payment_method['settings']['merchant_id']);
  Braintree_Configuration::publicKey($payment_method['settings']['public_key']);
  Braintree_Configuration::privateKey($payment_method['settings']['private_key']);
  Braintree_Configuration::environment($payment_method['settings']['environment']);
}

/**
 * Payment method callback: submit form.
 */
function commerce_braintree_vzero_submit_form($payment_method, $pane_values, $checkout_pane, $order) {

    commerce_braintree_vzero_initialize($payment_method);

    $token = Braintree_ClientToken::generate(array());

    $form['commerce_braintree_vzero'] = array();

    $form['commerce_braintree_vzero']['nonce'] = array(
      '#type' => 'hidden',
      '#title' => t('nonce'),
      '#default_value' => '',
      '#prefix' => '<div id="Braintree_Cart"></div>',
      '#suffix' => '<script src="https://js.braintreegateway.com/v2/braintree.js"></script><script>braintree.setup("'.$token.'", "dropin", {container: "Braintree_Cart",paymentMethodNonceReceived: function (event, nonce) { jQuery("input[name=\'commerce_payment[payment_details][commerce_braintree_vzero][nonce]\']").val(nonce); jQuery( "form" ).submit();}})</script>',
    );

    return $form;
}

/**
 * Payment method callback: submit form validation.
 */
function commerce_braintree_vzero_submit_form_validate($payment_method, $pane_form, $pane_values, $order, $form_parents = array()) {

  if (!$pane_values['commerce_braintree_vzero']['nonce']) {
    return FALSE;
  }else{

    commerce_braintree_vzero_initialize($payment_method);

    $amt = number_format(($order->commerce_order_total['und'][0]['amount']*0.01), 2, '.', '');

    $query = array(
     'amount' => $amt,
     'paymentMethodNonce' => $pane_values['commerce_braintree_vzero']['nonce'],
    );

    if($payment_method['settings']['custom_field']){

     $output = array();

      foreach($order->commerce_line_items['und'] as $item){
        $line_item = commerce_line_item_load($item['line_item_id']);

        $name = $line_item->line_item_label;
        $qty = $line_item->quantity;
        $amt = number_format(($line_item->commerce_order_total['und'][0]['amount']*0.01), 2, '.', '');

        $output[] = array(
            'qty' => $qty,
            'itemName' => $name,
            'price' => $amt,
          );

      }

      $output[] = array(
          'total' => number_format(($order->commerce_order_total['und'][0]['amount']*0.01), 2, '.', '')
        );

      $output = json_encode($output);

      $qfield = $payment_method['settings']['custom_field'];

      $query2 = array(
        'customFields' => array(
          $qfield => $output,
        ),
      );

      $query = array_merge($query, $query2);
    }

    $result = Braintree_Transaction::sale($query);

    if ($result->success == 1) {
      $order->data['commerce_braintree_vzero']['id'] = $result->transaction->_attributes['id'];
    } else {
      return FALSE;
    }

  }


}

/**
 * Payment method callback: submit form submission.
 */
function commerce_braintree_vzero_submit_form_submit($payment_method, $pane_form, $pane_values, $order, $charge) {

  $order->data['commerce_braintree_vzero']['nonce'] = $pane_values['commerce_braintree_vzero']['nonce'];

  commerce_braintree_vzero_transaction($payment_method, $order, $charge);
}

/**
 * Creates an example payment transaction for the specified charge amount.
 *
 * @param $payment_method
 *   The payment method instance object used to charge this payment.
 * @param $order
 *   The order object the payment applies to.
 * @param $charge
 *   An array indicating the amount and currency code to charge.
 */
function commerce_braintree_vzero_transaction($payment_method, $order, $charge) {

  $transaction = commerce_payment_transaction_new('commerce_braintree_vzero', $order->order_id);
  $transaction->instance_id = $payment_method['instance_id'];
  $transaction->remote_id = $order->data['commerce_braintree_vzero']['id'];
  $transaction->amount = $charge['amount'];
  $transaction->currency_code = $charge['currency_code'];
  $transaction->status = COMMERCE_PAYMENT_STATUS_SUCCESS;

  commerce_payment_transaction_save($transaction);
  return $transaction;
}