<?php

/**
 * @file
 * Contains mobile_detect.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Component\Utility\SafeMarkup;
use Drupal\Component\Utility\Xss;

/**
 * Implements hook_help().
 */
function mobile_detect_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the mobile_detect module.
    case 'help.page.mobile_detect':
      return _mobile_detect_get_readme();
  }
}

/**
 * Helper for mobile_detect readme.
 */
function _mobile_detect_get_readme() {
  $readme = file_get_contents(dirname(__FILE__) . '/README.txt');
  // Get the module handler service.
  $module_handler = \Drupal::moduleHandler();
  if ($module_handler->moduleExists('markdown')) {
    $filters = $module_handler->invoke('markdown', 'filter_info');
    $info = $filters['filter_markdown'];

    if (function_exists($info['process callback'])) {
      $function = $info['process callback'];
      $output = Xss::filterAdmin($function($readme, NULL));
    }
    else {
      $output = '<pre>' . SafeMarkup::checkPlain($readme) . '</pre>';
    }
  }
  else {
    $output = '<pre>' . SafeMarkup::checkPlain($readme) . '</pre>';
  }

  return $output;
}

/**
 * Implements hook_theme().
 */
function mobile_detect_theme() {
  $theme = [];

  return $theme;
}
