<?php

/**
 * @file
 * Provides extra menu links for the core drupal toolbar.
 */

use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_toolbar().
 */
function admin_toolbar_tools_toolbar() {
  $items = array();
  $items['admin_toolbar_tools'] = array(
    '#type' => 'toolbar_item',
    'tab' => array(
      '#type' => 'link',
      '#attributes' => array(
        'class' => array('toolbar-icon', 'toolbar-icon-admin-toolbar-tools-help'),
      ),
    ),
    '#attached' => array('library' => array('admin_toolbar_tools/toolbar.icon'),
    ),
  );

  return $items;
}

/**
 *  Implements hook_help().
 */
function admin_toolbar_tools_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.admin_toolbar_tools':
      $output = '';
      $output .= '<p>' . t('The Admin Toolbar Extra Tools module comes packaged with the <a href="https://www.drupal.org/project/admin_toolbar"> Admin Toolbar</a> module and adds functionality to it. The additional functionality is accessed thru extra links on the main administration <a href="https://www.drupal.org/project/toolbar">Toolbar</a>.  Some links to Admin Toolbar Extra Tools administration pages are located at the bottom of this page. For more information, see the <a href="https://www.drupal.org/node/2713693">online documentation for Admin Toolbar</a>') . '</p>';
      $output .= '<h3>' . t('Uses') . '</h3>';
      $output .= '<p>' . t('To use Admin Toolbar Extra Tools just install it like any other module.  There is no other configuration required. The Admin Toolbar functionality can be further extended by installing complimentary modules.  See <a href="https://www.drupal.org/project/admin_toolbar">Admin Toolbar</a> for a complete listing of these complimentary modules.') . '</p>';

      return $output;
  }
}

/**
 *  Implements hook_menu_links_discovered_alter().
 */
function admin_toolbar_tools_menu_links_discovered_alter(&$links) {
  $moduleHandler = \Drupal::moduleHandler();
  $entityTypeManager = \Drupal::entityTypeManager();
  $routeProvider = \Drupal::service('router.route_provider');
  $routes = array();
  foreach ($routeProvider->getAllRoutes() as $route_name => $route) {
    $routes[] = $route_name;
  }

  $entityTypes = $entityTypeManager->getDefinitions();
  $content_entities = array();
  foreach ($entityTypes as $key => $entityType) {
    if ($entityType->getBundleEntityType() && ($entityType->get('field_ui_base_route') != '')) {
      $content_entities[$key] = array(
        'content_entity' => $key,
        'content_entity_bundle' => $entityType->getBundleEntityType(),
      );
    }
  }

  // Adds common links to entities.
  foreach ($content_entities as $module_name => $entities) {
    $content_entity_bundle = $entities['content_entity_bundle'];
    $content_entity = $entities['content_entity'];
    foreach ($entityTypeManager->getStorage($content_entity_bundle)->loadMultiple() as $machine_name => $bundle) {
      // Normally, the edit form for the bundle would be its root link.
      $content_entity_bundle_root = NULL;
      if (in_array('entity.' . $content_entity_bundle . '.overview_form', $routes)) {
        // Some bundles have an overview/list form that make a better root link.
        $content_entity_bundle_root = 'entity.' . $content_entity_bundle . '.overview_form.' . $machine_name;
        $links[$content_entity_bundle_root] = array(
          'title' => $bundle->label(),
          'route_name' => 'entity.' . $content_entity_bundle . '.overview_form',
          'menu_name' => 'admin',
          'parent' => 'entity.' . $content_entity_bundle . '.collection',
          'route_parameters' => array($content_entity_bundle => $machine_name),
        );
      }
      if (in_array('entity.' . $content_entity_bundle . '.edit_form', $routes)) {
        $key = 'entity.' . $content_entity_bundle . '.edit_form.' . $machine_name;
        $links[$key] = array(
          'title' => $bundle->label(),
          'route_name' => 'entity.' . $content_entity_bundle . '.edit_form',
          'menu_name' => 'admin',
          'parent' => 'entity.' . $content_entity_bundle . '.collection',
          'route_parameters' => array($content_entity_bundle => $machine_name),
        );
        if (empty($content_entity_bundle_root)) {
          $content_entity_bundle_root = $key;
        }
        else {
          $links[$key]['parent'] = $content_entity_bundle_root;
          $links[$key]['title'] = t('Edit');
        }
      }
      if ($moduleHandler->moduleExists('field_ui')) {
        if (in_array('entity.' . $content_entity . '.field_ui_fields', $routes)) {
          $links['entity.' . $content_entity . '.field_ui_fields' . $machine_name] = array(
            'title' => t('Manage fields'),
            'route_name' => 'entity.' . $content_entity . '.field_ui_fields',
            'menu_name' => 'admin',
            'parent' => $content_entity_bundle_root,
            'route_parameters' => array($content_entity_bundle => $machine_name),
            'weight' => 1,
          );
        }
        if (in_array('entity.entity_form_display.' . $content_entity . '.default', $routes)) {
          $links['entity.entity_form_display.' . $content_entity . '.default' . $machine_name] = array(
            'title' => t('Manage form display'),
            'route_name' => 'entity.entity_form_display.' . $content_entity . '.default',
            'menu_name' => 'admin',
            'parent' => $content_entity_bundle_root,
            'route_parameters' => array($content_entity_bundle => $machine_name),
            'weight' => 2,
          );
        }
        if (in_array('entity.entity_view_display.' . $content_entity . '.default', $routes)) {
          $links['entity.entity_view_display.' . $content_entity . '.default.' . $machine_name] = array(
            'title' => t('Manage display'),
            'route_name' => 'entity.entity_view_display.' . $content_entity . '.default',
            'menu_name' => 'admin',
            'parent' => $content_entity_bundle_root,
            'route_parameters' => array($content_entity_bundle => $machine_name),
            'weight' => 3,
          );
        }
      }
      if ($moduleHandler->moduleExists('devel') && in_array('entity.' . $content_entity_bundle . '.devel_load', $routes)) {
        $links['entity.' . $content_entity_bundle . '.devel_load.' . $machine_name] = array(
          'title' => t('Devel'),
          'route_name' => 'entity.' . $content_entity_bundle . '.devel_load',
          'menu_name' => 'admin',
          'parent' => $content_entity_bundle_root,
          'route_parameters' => array($content_entity_bundle => $machine_name),
          'weight' => 4,
        );
      }
      if (in_array('entity.' . $content_entity_bundle . '.delete_form', $routes)) {
        $links['entity.' . $content_entity_bundle . '.delete_form.' . $machine_name] = array(
          'title' => t('Delete'),
          'route_name' => 'entity.' . $content_entity_bundle . '.delete_form',
          'menu_name' => 'admin',
          'parent' => $content_entity_bundle_root,
          'route_parameters' => array($content_entity_bundle => $machine_name),
          'weight' => 5,
        );
      }
    }
  }

  // Add user links.
  $links['user.admin_create'] = array(
    'title' => t('Add a new user'),
    'route_name' => 'user.admin_create',
    'menu_name' => 'admin',
    'parent' => 'entity.user.collection',
  );
  $links['user.admin_permissions'] = array(
    'title' => t('Permissions'),
    'route_name' => 'user.admin_permissions',
    'menu_name' => 'admin',
    'parent' => 'entity.user.collection',
  );
  $links['entity.user_role.collection'] = array(
    'title' => t('Roles'),
    'route_name' => 'entity.user_role.collection',
    'menu_name' => 'admin',
    'parent' => 'entity.user.collection',
  );
  $links['user.role_add'] = array(
    'title' => t('Add a new role'),
    'route_name' => 'user.role_add',
    'menu_name' => 'admin',
    'parent' => 'entity.user_role.collection',
    'weight' => -5,
  );
  if ($moduleHandler->moduleExists('field_ui')) {
    $links['entity.user.field_ui_fields_'] = array(
      'title' => t('Manage fields'),
      'route_name' => 'entity.user.field_ui_fields',
      'menu_name' => 'admin',
      'parent' => 'entity.user.admin_form',
    );
    $links['entity.entity_form_display.user.default_'] = array(
      'title' => t('Manage form display'),
      'route_name' => 'entity.entity_form_display.user.default',
      'menu_name' => 'admin',
      'parent' => 'entity.user.admin_form',
    );
    $links['entity.entity_view_display.user.default_'] = array(
      'title' => t('Manage display'),
      'route_name' => 'entity.entity_view_display.user.default',
      'menu_name' => 'admin',
      'parent' => 'entity.user.admin_form',
    );
  }
  foreach (user_roles() as $role) {
    $links['entity.user_role.edit_form.' . $role->id()] = array(
      'title' => $role->label(),
      'route_name' => 'entity.user_role.edit_form',
      'menu_name' => 'admin',
      'parent' => 'entity.user_role.collection',
      'route_parameters' => array('user_role' => $role->id()),
    );
    $links['entity.user_role.edit_permissions_form.' . $role->id()] = array(
      'title' => t('Edit permissions'),
      'route_name' => 'entity.user_role.edit_permissions_form',
      'menu_name' => 'admin',
      'parent' => 'entity.user_role.edit_form.' . $role->id(),
      'route_parameters' => array('user_role' => $role->id()),
    );
    $links['entity.user_role.delete_form.' . $role->id()] = array(
      'title' => t('Delete'),
      'route_name' => 'entity.user_role.delete_form',
      'menu_name' => 'admin',
      'parent' => 'entity.user_role.edit_form.' . $role->id(),
      'route_parameters' => array('user_role' => $role->id()),
    );
    if ($moduleHandler->moduleExists('devel')) {
      $links['entity.user_role.devel_load.' . $role->id()] = array(
        'title' => t('Devel'),
        'route_name' => 'entity.user_role.devel_load',
        'menu_name' => 'admin',
        'parent' => 'entity.user_role.edit_form.' . $role->id(),
        'route_parameters' => array('user_role' => $role->id()),
      );
    }
  }

  if ($moduleHandler->moduleExists('node')) {
    $links['node.add_page']['parent'] = 'system.admin_content';
    $links['node.type_add'] = array(
      'title' => t('Add content type'),
      'route_name' => 'node.type_add',
      'menu_name' => 'admin',
      'parent' => 'entity.node_type.collection',
      'weight' => -5
    );
    // Add node links for each content type.
    foreach (node_type_get_names() as $machine_name => $label) {
      $links['node.add.' . $machine_name] = array(
        'title' => $label,
        'route_name' => 'node.add',
        'menu_name' => 'admin',
        'parent' => 'node.add_page',
        'route_parameters' => array('node_type' => $machine_name),
      );
    }
  }

  if ($moduleHandler->moduleExists('field_ui')) {
    $links['field_ui.entity_form_mode_add'] = array(
      'title' => t('Add new form mode'),
      'route_name' => 'field_ui.entity_form_mode_add',
      'menu_name' => 'admin',
      'parent' => 'entity.entity_form_mode.collection',
    );
    $links['field_ui.entity_view_mode_add'] = array(
      'title' => t('Add new view mode'),
      'route_name' => 'field_ui.entity_view_mode_add',
      'menu_name' => 'admin',
      'parent' => 'entity.entity_view_mode.collection',
    );
  }

  if ($moduleHandler->moduleExists('taxonomy')) {
    $links['entity.taxonomy_vocabulary.add_form'] = array(
      'title' => t('Add vocabulary'),
      'route_name' => 'entity.taxonomy_vocabulary.add_form',
      'menu_name' => 'admin',
      'parent' => 'entity.taxonomy_vocabulary.collection',
      'weight' => -5,
    );
  }

  if ($moduleHandler->moduleExists('menu_ui')) {
    $links['entity.menu.add_form'] = array(
      'title' => t('Add menu'),
      'route_name' => 'entity.menu.add_form',
      'menu_name' => 'admin',
      'parent' => 'entity.menu.collection',
      'weight' => -50
    );
    // Adds links to /admin/structure/menu.
    foreach (menu_ui_get_menus() as $machine_name => $label) {
      $links['entity.menu.edit_form.' . $machine_name] = array(
        'title' => $label,
        'route_name' => 'entity.menu.edit_form',
        'menu_name' => 'admin',
        'parent' => 'entity.menu.collection',
        'route_parameters' => array('menu' => $machine_name),
      );
      $links['entity.menu.delete_form.' . $machine_name] = array(
        'title' => t('Delete'),
        'route_name' => 'entity.menu.delete_form',
        'menu_name' => 'admin',
        'parent' => 'entity.menu.edit_form.' . $machine_name,
        'route_parameters' => array('menu' => $machine_name),
      );
      if ($moduleHandler->moduleExists('devel')) {
        $links['entity.menu.devel_load.' . $machine_name] = array(
          'title' => t('Devel'),
          'route_name' => 'entity.menu.devel_load',
          'menu_name' => 'admin',
          'parent' => 'entity.menu.edit_form.' . $machine_name,
          'route_parameters' => array('menu' => $machine_name),
        );
      }
      $links['entity.menu.add_link_form.' . $machine_name] = array(
        'title' => t('Add link'),
        'route_name' => 'entity.menu.add_link_form',
        'menu_name' => 'admin',
        'parent' => 'entity.menu.edit_form.' . $machine_name,
        'route_parameters' => array('menu' => $machine_name),
      );
    }
  }

  // If module block_content is enabled.
  if ($moduleHandler->moduleExists('block_content')) {
    $links['block_content.add_page'] = array(
      'title' => t('Add custom block'),
      'route_name' => 'block_content.add_page',
      'menu_name' => 'admin',
      'parent' => 'block.admin_display',
      'weight' => -100
    );
    $links['entity.block_content.collection'] = array(
      'title' => t('Custom block library'),
      'route_name' => 'entity.block_content.collection',
      'menu_name' => 'admin',
      'parent' => 'block.admin_display',
    );
    $links['entity.block_content_type.collection'] = array(
      'title' => t('Types'),
      'route_name' => 'entity.block_content_type.collection',
      'menu_name' => 'admin',
      'parent' => 'block.admin_display',
    );
  }

  // If module Contact is enabled.
  if ($moduleHandler->moduleExists('contact')) {
    $links['contact.form_add'] = array(
      'title' => t('Add contact form'),
      'route_name' => 'contact.form_add',
      'menu_name' => 'admin',
      'parent' => 'entity.contact_form.collection',
      'weight' => -5
    );
  }

  // If module Update Manager is enabled.
  if ($moduleHandler->moduleExists('update')) {
    $links['update.module_update'] = array(
      'title' => t('Update'),
      'route_name' => 'update.module_update',
      'menu_name' => 'admin',
      'parent' => 'system.modules_list',
    );
    $links['update.module_install'] = array(
      'title' => t('Install new module'),
      'route_name' => 'update.module_install',
      'menu_name' => 'admin',
      'parent' => 'system.modules_list',
    );
  }

  // If module Devel is enabled.
  if ($moduleHandler->moduleExists('devel')) {
    $links['admin_development'] = array(
      'title' => t('Development'),
      'route_name' => 'system.admin_config_development',
      'menu_name' => 'admin',
      'parent' => 'admin_toolbar_tools.help',
      'weight' => '-8',
    );
    $links['admin_toolbar_tools.devel.admin_settings'] = array(
      'title' => t('Devel settings'),
      'route_name' => 'devel.admin_settings',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
      'weight' => '-1',
    );
    $links['admin_toolbar_tools.devel.configs_list'] = array(
      'title' => t('Config editor'),
      'route_name' => 'devel.configs_list',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.reinstall'] = array(
      'title' => t('Reinstall modules'),
      'route_name' => 'devel.reinstall',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.menu_rebuild'] = array(
      'title' => t('Rebuild menu'),
      'route_name' => 'devel.menu_rebuild',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.state_system_page'] = array(
      'title' => t('State editor'),
      'route_name' => 'devel.state_system_page',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.theme_registry'] = array(
      'title' => t('Theme registry'),
      'route_name' => 'devel.theme_registry',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.entity_info_page'] = array(
      'title' => t('Entity Info'),
      'route_name' => 'devel.entity_info_page',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.execute_php'] = array(
      'title' => t('Execute PHP Code'),
      'route_name' => 'devel.execute_php',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.session'] = array(
      'title' => t('Session viewer'),
      'route_name' => 'devel.session',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
    $links['admin_toolbar_tools.devel.elements_page'] = array(
      'title' => t('Form API field types'),
      'route_name' => 'devel.elements_page',
      'menu_name' => 'admin',
      'parent' => 'admin_development',
    );
  }

  // If module Views Ui enabled.
  if ($moduleHandler->moduleExists('views_ui')) {
    $links['views_ui.add'] = array(
      'title' => t('Add new view'),
      'route_name' => 'views_ui.add',
      'menu_name' => 'admin',
      'parent' => 'entity.view.collection',
      'weight' => -5,
    );
  }

  $links['system.theme_settings_'] = array(
    'title' => t('Settings'),
    'route_name' => 'system.theme_settings',
    'menu_name' => 'admin',
    'parent' => 'system.themes_page',
  );

  if ($moduleHandler->moduleExists('update')) {
    $links['update.theme_install_'] = array(
      'title' => t('Install new theme'),
      'route_name' => 'update.theme_install',
      'menu_name' => 'admin',
      'parent' => 'system.themes_page',
    );
    $links['update.theme_update_'] = array(
      'title' => t('Update'),
      'route_name' => 'update.theme_update',
      'menu_name' => 'admin',
      'parent' => 'system.themes_page',
    );
    // Lists installed themes.
    $installed_themes = installedThemes();
    foreach ($installed_themes as $key_theme => $label_theme) {
      $links['system.theme_settings_theme' . '.' . $key_theme] = array(
        'title' => t($label_theme),
        'route_name' => 'system.theme_settings_theme',
        'menu_name' => 'admin',
        'parent' => 'system.theme_settings_',
        'route_parameters' => array(
          'theme' => $key_theme,
        ),
      );
    }
  }
}

/**
 * Return installed themes.
 * @return array
 */
function installedThemes() {
  $all_themes = \Drupal::service('theme_handler')->listInfo();
  $themes_installed = array();
  foreach ($all_themes as $key_theme => $theme) {
    if (\Drupal::service('theme_handler')->hasUi($key_theme)) {
      $themes_installed[$key_theme] = $theme->getName();
    }
  }

  return $themes_installed;
}

/**
 * Get all links related to entity
 * @param $entity_type_id
 * @return array
 */
function getLinks($entity_type_id) {
  $entity = \Drupal::entityTypeManager()->getDefinition($entity_type_id);
  // Get all links related to entity.
  $links = $entity->getLinkTemplates();

  return $links;
}
