<?php
/**
 * @file
 * Provides install, update, schema and uninstall hooks for the module
 * @copyright Copyright(c) 2011 Rowlands Group
 * @license GPL v2 http://www.fsf.org/licensing/licenses/gpl.html
 * @author Lee Rowlands leerowlands at rowlandsgroup dot com
 */

/**
 * Implements hook_install().
 */
function commerce_node_checkout_install() {
  $t = get_t();
  // Create the node checkout product type - we do this for the
  // commerce_node_checkout_expiry sub-module to be able to target the product
  // with additional product types.
  $product_types = commerce_product_types();
  if (empty($product_types['commerce_node_checkout'])) {
    $product_type = commerce_product_ui_product_type_new();

    $product_type['type'] = 'commerce_node_checkout';
    $product_type['name'] = $t('Pay to Publish');
    $product_type['description'] = $t('A product associated with publishing a node.');
    $product_type['is_new'] = TRUE;

    commerce_product_ui_product_type_save($product_type, FALSE);
    commerce_price_create_instance('commerce_price', 'commerce_product', 'commerce_node_checkout', $t('Price'), 0, 'calculated_sell_price');
  }

  // If a field type we know should exist isn't found, clear the Field cache.
  if (!field_info_field_types('node_reference')) {
    field_cache_clear();
  }

  // Make sure our entity info exists.
  entity_info_cache_clear();

  // Setup line item type.
  commerce_line_item_configure_line_item_type(array('type' => 'commerce_node_checkout'));
  commerce_product_line_item_configuration(array('type' => 'commerce_node_checkout'));

  // Create our fields.
  foreach (_commerce_node_checkout_installed_fields() as $field_name => $field_detail) {
    // Look for existing field.
    $field = field_info_field($field_name);

    if (empty($field)) {
      $field = field_create_field($field_detail);
    }
  }

  // And their instances.
  foreach (_commerce_node_checkout_installed_instances() as $field_name => $instance_detail) {
    // Look for existing instance.
    $instance = field_info_instance($instance_detail['entity_type'], $field_name, $instance_detail['bundle']);

    if (empty($instance)) {
      field_create_instance($instance_detail);
    }
  }
}


/**
 * Implements hook_uninstall().
 */
function commerce_node_checkout_uninstall() {
  $types = node_type_get_names();
  foreach ($types as $type => $name) {
    variable_del('commerce_node_checkout_products_' . $type);
  }
  $variables = array(
    'commerce_node_checkout_expire_subject',
    'commerce_node_checkout_expire_body',
    'commerce_node_checkout_expire_reminder'
  );
  foreach ($variables as $variable) {
    variable_del($variable);
  }
}

/**
 * Returns a structured array defining the fields created by this module.
 *
 * @return array
 *   An associative array specifying the fields we wish to add to our
 *   entities
 */
function _commerce_node_checkout_installed_fields() {
  $t = get_t();
  return array(
    'commerce_node_checkout_node' => array(
      'field_name' => 'commerce_node_checkout_node',
      'cardinality' => 1,
      'type'        => 'node_reference',
      'settings'    => array(
        'referenceable_types' => node_type_get_names(),
      ),
    ),
  );
}

/**
 * Returns a structured array defining the instances for this module
 *
 * @return array
 *   An associative array specifying the instances we wish to add to our entities
 */
function _commerce_node_checkout_installed_instances() {
  $t = get_t();
  return array(
    'commerce_node_checkout_node' => array(
      'entity_type' => 'commerce_line_item',
      'bundle' => 'commerce_node_checkout',
      'field_name' => 'commerce_node_checkout_node',
      'label'       => $t('Associated content'),
      'widget'      => array(
        'type'    => 'options_select',
      ),
      'display' => array(
        'default' => array(
          'label' => 'hidden',
          'type' => 'node_reference_default',
        ),
      ),
    ),
  );
}