<?php

/**
 * @file
 * Contains update functions for Page Manager.
 */

/**
 * Implements hook_requirements().
 *
 * @todo: Remove this when https://www.drupal.org/node/2641658 is fixed.
 */
function page_manager_requirements($phase) {
  $requirements = [];

  // Check that core actually is >= 8.0.5.
  if (!version_compare(\Drupal::VERSION, '8.0.5', '>=')) {
    $requirements['page_manager_core_version'] = [
      'title' => t('Page manager Drupal core version'),
      'value' => \Drupal::VERSION,
      'description' => t('Page manager requires at least Drupal core 8.0.5.'),
      'severity' => REQUIREMENT_ERROR,
    ];
  }

  return $requirements;
}

/**
 * Install the Page Manager UI for existing sites.
 */
function page_manager_update_8001() {
  \Drupal::service('module_installer')->install(['page_manager_ui']);
}

/**
 * Rename layout machine names in config entities to match layout discovery's default layouts.
 */
function page_manager_update_8002() {
  $names = \Drupal::configFactory()->listAll('page_manager.page_variant');
  foreach ($names as $name) {
    $config = \Drupal::configFactory()->getEditable($name);
    if ($config->get('variant') === 'panels_variant') {
      module_load_install('panels');

      if (!function_exists('panels_convert_plugin_ids_to_layout_discovery')) {
        throw new \Exception('Panels helper function does not exist, the latest Panels 4.x-dev snapshot is required to run this update.');
      }

      $layout_id = $config->get('variant_settings.layout');
      if ($new_layout_id = panels_convert_plugin_ids_to_layout_discovery($layout_id)) {
        $config->set('variant_settings.layout', $new_layout_id);
        $config->save();
      }
    }
  }
}

/**
 * Add "redirect_location" key to all "http_status_code" page variant.
 */
function page_manager_update_8401() {
  $names = \Drupal::configFactory()->listAll('page_manager.page_variant');
  foreach ($names as $name) {
    $config = \Drupal::configFactory()->getEditable($name);
    if ($config->get('variant') === 'http_status_code') {
      $variant_settings = $config->get('variant_settings');
      if (!array_key_exists('redirect_location', $variant_settings)) {
        $config->set('variant_settings.redirect_location', '');
        $config->save();
      }
    }
  }
}