<?php
/**
 * @file
 * Node Export Features UI main module file
 */
/**
 * Implements hook_menu().
 */
function node_export_features_ui_menu() {
  $items = array();

  $items['admin/config/content/node_export/features'] = array(
    'access arguments' => array('administer site configuration'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('node_export_features_ui_settings'),
    'title' => 'Features Configuration',
    'description' => 'Configure filters for nodes available to be exported by node export features',
    'file' => 'node_export_features_ui.pages.inc',
    'type' => MENU_LOCAL_TASK,
     'weight' => 10,
  );

  return $items;
}

/**
 * Implements hook_query_alter().
 */
function node_export_features_ui_query_alter(QueryAlterableInterface $query) {
  if ($query->hasTag('node_export_features')) {
    $range = variable_get('node_export_features_ui_range', 250);
    $types = variable_get('node_export_features_ui_content_types', array());
    $status = variable_get('node_export_features_ui_status', 0);
    $promote = variable_get('node_export_features_ui_promote', 0);
    $sticky = variable_get('node_export_features_ui_sticky', 0);
    $title = trim(variable_get('node_export_features_ui_title', ''));
    $uuids = node_export_features_ui_textarea_to_array(variable_get('node_export_features_ui_uuids', ''));

    // Add in the specified conditions.
    if ( $range ) {
      $query->range(0, $range);
    }
    if ( ! empty($types) ) {
      $query->condition('type', $types, 'IN');
    }
    if ( $status ) {
      $query->condition('status', $status-1);
    }
    if ( $promote ) {
      $query->condition('promote', $promote-1);
    }
    if ( $sticky ) {
      $query->condition('sticky', $sticky-1);
    }
    if ( $title ) {
      $query->condition('title', $title, 'LIKE');
    }
    if ( ! empty($uuids) ) {
      $query->condition('uuid', $uuids, 'IN');
    }
  }
}
/**
 * Utility function to convert a text area into a array of trimmed non-blank lines.
 *
 * @param string $area
 *   The text area value to parse.
 * @return array
 *   The parsed array of non-blank trimmed lines found in the area.
 *   An empty array is returned if no information found.
 */
function node_export_features_ui_textarea_to_array( $area ) {
  $area = trim($area);
  $results = array();
  if ( $area ) {
    $lines = explode("\r\n", $area);
    foreach ( $lines as $key => $value ) {
      $result = trim($value);
      if ( $result ) {
        $results[] = $result;
      }
    }
  }
  return $results;
}