queueit.module

<?php

/**
 * @file
 * Queue-it main module file.
 */

define('QUEUEIT_EXCLUDE', "admin\nadmin/*\nsites/*\nsystem/ajax/*\nuser/*");

/**
 * Implements hook_help().
 */
function queueit_help($path, $arg) {
  // Load help content from the README file.
  $content = file_get_contents(drupal_get_path('module', 'queueit') . '/README.md');
  $content .= file_get_contents(libraries_get_path('composer') . '/queueit/knownuserv3' . '/README.md');
  module_load_include('inc', 'queueit');
  switch ($path) {
    // Main module help for the queueit module.
    case 'admin/help#queueit':
      return '<p>' . queueit_md2html($content) . '</p>';
  }
}

/**
 * Implements hook_init().
 */
function queueit_init() {

  // Check if user role is excluded from the Queue-it processing.
  // If debug mode is enabled, ignore bypassing for debugging purposes.
  if (user_access('bypass queueit') && !variable_get('queueit_debug', FALSE)) {
    return;
  }

  // The KnownUser validation must _only_ be done on page requests.
  // So, if you add the KnownUser validation logic to a central place,
  // then be sure that the Triggers only fire on page requests
  // and not on e.g. image or ajax requests.
  $curr_path = drupal_strtolower(drupal_get_path_alias($_GET['q']));
  $exclude_paths = variable_get('queueit_exclude_pages', QUEUEIT_EXCLUDE);
  foreach (explode("\n", $exclude_paths) as $path) {
    // Check for matching page path to exclude.
    $page_match = drupal_match_path($curr_path, drupal_strtolower($path));
    if ($curr_path != $_GET['q']) {
      $page_match = $page_match || drupal_match_path($_GET['q'], drupal_strtolower($path));
    }
    if ($page_match) {
      return;
    }
  }
  $known_user = new QueueitKnownUser();
  $customer_id = $known_user->getCustomerId();
  // Ignore processing if the config is invalid.
  if (!$known_user->validateConfig()) {
    return;
  }
  // Ignore processing for when in CLI mode.
  if (variable_get('queueit_ignore_cli', TRUE) && drupal_is_cli()) {
    return;
  }
  // Ignore processing for pages sent via POST.
  if (variable_get('queueit_ignore_post', TRUE) && !empty($_POST)) {
    return;
  }
  try {
    $method = variable_get('queueit_mode', 'code');
    switch ($method) {
      case 'code':
        $result = $known_user->resolveRequestByLocalEventConfig();
        break;

      case 'integration':
        $result = $known_user->validateRequestByIntegrationConfig();
        break;

      case 'js':
        drupal_add_js(QueueitBase::QI_JS_CLIENT_URL, 'external');
        /* @fixme: https://drupal.stackexchange.com/q/253634
        drupal_add_js(QueueitBase::QI_JS_LOADER_URL,
          [
            'type' => 'external',
            'data-queueit-c' => $customer_id,
          ]);
        */
        $js_code = "<script data-queueit-c='$customer_id' type='text/javascript' src='//static.queue-it.net/script/queueconfigloader.min.js'></script>";
        drupal_add_js($js_code, 'inline');
        break;

      default:
        watchdog('queueit', 'Unknown method type: %type', ['%type' => $method], WATCHDOG_WARNING);
        break;
    }
    if (!empty($result)
      && variable_get('queueit_debug', FALSE)
      && user_access('administer queueit')
      ) {
      // Displays response when in debug mode for admin users.
      drupal_set_message(var_export($result, TRUE), 'status');
    }
    if (!user_access('bypass queueit') && $result->doRedirect()) {
      // Send the user to the queue.
      // Either because hash was missing or because it was invalid.
      drupal_goto($result->redirectUrl, ['absolute' => TRUE]);
    }
  }
  catch (\Exception $e) {
    watchdog_exception('queueit', $e);
  }
}

/**
 * Implements hook_menu().
 */
function queueit_menu() {
  $items = array();
  $items['admin/config/services/queueit'] = array(
    'title' => 'Queue-it settings',
    'description' => 'Configure settings for Queue-it.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('queueit_settings_form'),
    'access arguments' => array('administer queueit'),
    'file' => 'queueit.admin.inc',
  );

  return $items;
}

/**
 * Implements hook_library().
 */
function queueit_library() {
  // Register libraries available in the external directory.
  $libraries['queueit/KnownUser'] = array(
    'title' => 'KnownUser.V3.PHP',
    'website' => 'https://github.com/queueit/KnownUser.V3.PHP',
    'version' => '3',
  );
  return $libraries;
}

/**
 * Implements hook_permission().
 */
function queueit_permission() {
  $permissions = array();
  $permissions['bypass queueit'] = array(
    'title' => t('Bypass Queue-it'),
    'description' => t('Exclude the queue system for the selected roles.'),
  );
  $permissions['administer queueit'] = array(
    'title' => t('Administer Queue-it'),
    'description' => t('Configure Queue-it settings and credentials. Warning: Give to trusted roles only.'),
  );

  return $permissions;
}