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<?php

/**

 * @file

 * Hooks provided by the Product Pricing module.

 */

/**

 * Lets modules invalidate a particular product during the sell price pre-

 *   calculation process.

 *

 * Because the price table can very quickly accumulate millions of rows on

 * complex websites, it is advantageous to prevent any unnecessary products from

 * cluttering up the table. This hook allows modules to prevent pre-calculation

 * on an individual product, which is especially useful when it is known that

 * products meeting certain criteria will never be featured in Views and other

 * displays where it might be sorted or filtered based on a calculated price.

 *

 * @param $product

 *   The product being considered for sell price pre-calculation.

 *

 * @return

 *   TRUE or FALSE indicating whether or not the product is valid.

 *

 * @see hook_commerce_product_valid_pre_calculation_rule()

 */

function hook_commerce_product_valid_pre_calculation_product($product) {

  // Disable sell price pre-calculation for inactive products.

  if (!$product->status) {

    return FALSE;

  }

}

/**

 * Lets modules invalidate a particular rule configuration during the sell price

 *   pre-calculation process.

 *

 * Because the price table can very quickly accumulate millions of rows on

 * complex websites, it is advantageous to prevent any unnecessary rule

 * configurations from the pre-calculation process. Each additional rule

 * configuration exponentially increases the amount of rows necessary for each

 * product whose sell price is pre-calculated.

 *

 * This hook allows modules to prevent pre-calculation for individual rule

 * configurations, which is especially useful when it is known that certain

 * rule configurations will never affect the prices of products featured in

 * Views or other displays that sort or filter based on a calculated price.

 *

 * @param $rule

 *   A rule configuration belonging to the commerce_product_calculate_sell_price

 *     event.

 *

 * @return

 *   TRUE or FALSE indicating whether or not the rule configuration is valid.

 *

 * @see hook_commerce_product_valid_pre_calculation_product()

 */

function hook_commerce_product_valid_pre_calculation_rule($rule) {

  // TODO: Use the implementation specced in http://drupal.org/node/1020976 as

  // an example here.

}

/**

 * Allows modules to alter the product line item used for sell price calculation.

 *

 * @param $line_item

 *   The product line item used for sell price calculation.

 */

function hook_commerce_product_calculate_sell_price_line_item_alter($line_item) {

  global $user;

  // Reference the current shopping cart order in the line item if it isn't set.

  if (empty($line_item->order_id)) {

    $line_item->order_id = commerce_cart_order_id($user->uid);

  }

}