Issue #2892498 by rszrama: update product price comparisons to use currency...

 *   Returns TRUE if condition is valid, FALSE otherwise.

 */

function commerce_discount_extra_line_item_price_comp_build(EntityDrupalWrapper $line_item_wrapper, $price, $operator, $method) {

  // Ensure that it is a product line item and that it is the same currency as

  // the price argument.

  $line_item_total = $line_item_wrapper->commerce_total->value();

  if (!in_array($line_item_wrapper->getBundle(), commerce_product_line_item_types()) || $line_item_total['currency_code'] != $price['currency_code']) {

  // Ensure that it is a product line item.

  if (!in_array($line_item_wrapper->getBundle(), commerce_product_line_item_types())) {

    return FALSE;

  }

  // Calculate line item amount.

  // Select the appropriate line item price based on the comparison method.

  switch ($method) {

    case 'base':

      // Get product base price.

      $line_item_amount = $line_item_wrapper->commerce_product->commerce_price->amount->value();

      $line_item_price = $line_item_wrapper->commerce_product->commerce_price->value();

      break;

    case 'calculated':

      // Get line item total.

      $line_item_amount = $line_item_wrapper->commerce_total->amount->value();

      $line_item_price = $line_item_wrapper->commerce_total->value();

      break;

    // Invalid method.

      return FALSE;

  }

  // Convert the comparison amount to the line item's currency to make an even

  // comparison.

  $comparison_price_amount = commerce_currency_convert($price['amount'], $price['currency_code'], $line_item_price['currency_code']);

  // Evaluate expression.

  return _commerce_discount_extra_expression_eval($line_item_amount, $price['amount'], $operator);

  return _commerce_discount_extra_expression_eval($line_item_price['amount'], $comparison_price_amount, $operator);

}

/**