module

web/modules/simple_sitemap/LICENSE.txt

+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

web/modules/simple_sitemap/README.md

+## CONTENTS OF THIS FILE ##
+
+ * Introduction
+ * Installation
+ * Configuration
+ * Usage
+ * Extending the module
+ * How Can You Contribute?
+ * Maintainers
+
+## INTRODUCTION ##
+
+Author and maintainer: Pawel Ginalski (gbyte.co)
+ * Drupal: https://www.drupal.org/u/gbyte.co
+ * Personal: https://gbyte.co/
+
+The module generates multilingual XML sitemaps which adhere to Google's new
+hreflang standard. Out of the box the sitemaps index most of Drupal's
+content entity types including:
+
+ * nodes
+ * taxonomy terms
+ * menu links
+ * users
+ * ...
+
+Contributed entity types like commerce products or media entities can be indexed
+as well. On top of that custom links can be added to the sitemap.
+
+To learn about XML sitemaps, see https://en.wikipedia.org/wiki/Sitemaps.
+
+The module also provides an API allowing to create any type of sitemap (not
+necessary an XML one) holding links to a local or remote source.
+
+## INSTALLATION ##
+
+See https://www.drupal.org/documentation/install/modules-themes/modules-8
+for instructions on how to install or update Drupal modules.
+
+## CONFIGURATION ##
+
+### PERMISSIONS ###
+
+The module permission 'administer sitemap settings' can be configured under
+/admin/people/permissions.
+
+### ENTITIES ###
+
+Initially only the home page is indexed in the sitemap. To include content into
+the sitemap, visit /admin/config/search/simplesitemap/entities to enable support
+for entity types of your choosing. Entity types which feature bundles can then
+be configured on a per-bundle basis, e.g.
+
+ * /admin/structure/types/manage/[content type] for nodes
+ * /admin/structure/taxonomy/manage/[taxonomy vocabulary] for taxonomy terms
+ * /admin/structure/menu/manage/[menu] for menu items
+ * ...
+
+When including an entity type or bundle into the sitemap, the priority setting
+can be set which will set the 'priority' parameter for all entities of that
+type. Same goes for the 'changefreq' setting. All Images referenced by the
+entities can be indexed as well. See https://en.wikipedia.org/wiki/Sitemaps to
+learn more about these parameters.
+
+Inclusion settings of bundles can be overridden on a per-entity
+basis. Just head over to a bundle instance edit form (e.g. node/1/edit) to
+override its sitemap settings.
+
+If you wish for the sitemap to reflect the new configuration instantly, check
+'Regenerate sitemaps after clicking save'. This setting only appears if a change
+in the settings has been detected.
+
+As the sitemap is accessible to anonymous users, bear in mind that only links
+will be included which are accessible to anonymous users. There are no access
+checks for links added through the module's hooks (see below).
+
+### CUSTOM LINKS ###
+
+To include custom links into the sitemap, visit
+/admin/config/search/simplesitemap/custom.
+
+### SETTINGS ###
+
+The settings page can be found under admin/config/search/simplesitemap.
+Here the module can be configured and the sitemaps can be manually regenerated.
+
+#### VARIANTS ####
+
+It is possible to have several sitemap instances of different sitemap types with
+specific links accessible under certain URLs. These sitemap variants can be
+configured under admin/config/search/simplesitemap/variants.
+
+## USAGE ## 
+
+The sitemaps are accessible to the whole world under [variant name]/sitemap.xml.
+In addition to that, the default sitemap is accessible under /sitemap.xml.
+
+If the cron generation is turned on, the sitemaps will be regenerated according
+to the 'Sitemap generation interval' setting.
+
+A manual generation is possible on admin/config/search/simplesitemap. This is
+also the place that shows the overall and variant specific generation status.
+
+The sitemap can be also generated via drush: Use the command
+'drush simple-sitemap:generate' ('ssg'), or 'drush simple-sitemap:rebuild-queue'
+('ssr').
+
+Generation of hundreds of thousands of links can take time. Each variant gets
+published as soon as all of its links have been generated. The previous version
+of the sitemap variant is accessible during the generation process.
+
+## EXTENDING THE MODULE ##
+
+### API ###
+
+There are API methods for altering stored inclusion settings, status queries and
+programmatic sitemap generation. These include:
+
+ * getSetting
+ * saveSetting
+ * setVariants
+ * getSitemap
+ * removeSitemap
+ * generateSitemap
+ * rebuildQueue
+ * enableEntityType
+ * disableEntityType
+ * setBundleSettings
+ * getBundleSettings
+ * removeBundleSettings
+ * supplementDefaultSettings
+ * setEntityInstanceSettings
+ * getEntityInstanceSettings
+ * removeEntityInstanceSettings
+ * bundleIsIndexed
+ * entityTypeIsEnabled
+ * addCustomLink
+ * getCustomLinks
+ * removeCustomLinks
+ * getSitemapManager
+    * getSitemapVariants
+    * addSitemapVariant
+    * removeSitemapVariants
+ * getQueueWorker
+    * deleteQueue
+    * rebuildQueue
+    * getInitialElementCount
+    * getQueuedElementCount
+    * getStashedResultCount
+    * getProcessedElementCount
+    * generationInProgress
+
+
+These service methods can be chained like so:
+
+```php
+$generator = \Drupal::service('simple_sitemap.generator');
+
+$generator
+  ->getSitemapManager()
+  ->addSitemapVariant('test');
+  
+$generator
+  ->saveSetting('remove_duplicates', TRUE)
+  ->enableEntityType('node')
+  ->setVariants(['default', 'test'])
+  ->setBundleSettings('node', 'page', ['index' => TRUE, 'priority' = 0.5])
+  ->removeCustomLinks()
+  ->addCustomLink('/some/view/page', ['priority' = 0.5])
+  ->generateSitemap();
+```
+
+See https://gbyte.co/projects/simple-xml-sitemap and code documentation in 
+Drupal\simple_sitemap\Simplesitemap for further details.
+
+### API HOOKS ###
+
+It is possible to hook into link generation by implementing
+`hook_simple_sitemap_links_alter(&$links){}` in a custom module and altering the
+link array shortly before it is transformed to XML.
+
+Adding arbitrary links is possible through the use of
+`hook_simple_sitemap_arbitrary_links_alter(&$arbitrary_links){}`. There are no
+checks performed on these links (i.e. if they are internal/valid/accessible)
+and parameters like priority/lastmod/changefreq have to be added manually.
+
+Altering sitemap attributes and sitemap index attributes is possible through the
+use of `hook_simple_sitemap_attributes_alter(&$attributes){}` and
+`hook_simple_sitemap_index_attributes_alter(&$index_attributes){}`.
+
+Altering URL generators is possible through
+the use of `hook_simple_sitemap_url_generators_alter(&$generators){}`.
+
+Altering sitemap generators is possible through
+the use of `hook_simple_sitemap_sitemap_generators_alter(&$generators){}`.
+
+Altering sitemap types is possible through
+the use of `hook_simple_sitemap_sitemap_types_alter(&$generators){}`.
+
+### WRITING PLUGINS ###
+
+There are three types of plugins that allow to create any type of sitemap. See
+the generator plugins included in this module and check the API docs
+(https://www.drupal.org/docs/8/api/plugin-api/plugin-api-overview) to learn how
+to implement plugins.
+
+#### SITEMAP TYPE PLUGINS ####
+
+This plugin defines a sitemap type. A sitemap type consists of a sitemap
+generator and several URL generators. This plugin is very simple, as it
+only requires some class annotation to define which sitemap/URL plugins to use.
+
+#### SITEMAP GENERATOR PLUGINS ####
+
+This plugin defines how a sitemap type is supposed to look. It handles all
+aspects of the sitemap except its links/URLs.
+
+#### URL GENERATOR PLUGINS ####
+
+This plugin defines a way of generating URLs for one or more sitemap types.
+
+Note:
+Overwriting the default EntityUrlGenerator for a single entity type is possible
+through the flag "overrides_entity_type" = "[entity_type_to_be_overwritten]" in
+the settings array of the new generator plugin's annotation. See how the
+EntityUrlGenerator is overwritten by the EntityMenuLinkContentUrlGenerator to
+facilitate a different logic for menu links.
+
+See https://gbyte.co/projects/simple-xml-sitemap for further details.
+
+## HOW CAN YOU CONTRIBUTE? ##
+
+ * Report any bugs, feature or support requests in the issue tracker; if
+   possible help out by submitting patches.
+   http://drupal.org/project/issues/simple_sitemap
+
+ * Do you know a non-English language? Help translating the module.
+   https://localize.drupal.org/translate/projects/simple_sitemap
+
+ * If you would like to say thanks and support the development of this module, a
+   donation will be much appreciated.
+   https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5AFYRSBLGSC3W
+   
+ * Feel free to contact me for paid support: https://gbyte.co/contact
+
+## MAINTAINERS ##
+
+Current maintainers:
+ * Pawel Ginalski (gbyte.co) - https://www.drupal.org/u/gbyte.co

web/modules/simple_sitemap/composer.json

+{
+  "name": "drupal/simple_sitemap",
+  "description": "Creates a standard conform hreflang XML sitemap of the site content and provides a framework for developing other sitemap types.",
+  "type": "drupal-module",
+  "homepage": "https://drupal.org/project/simple_sitemap",
+  "authors": [
+    {
+      "name": "Pawel Ginalski (gbyte.co)",
+      "email": "contact@gbyte.co",
+      "homepage": "https://www.drupal.org/u/gbyte.co",
+      "role": "Maintainer"
+    }
+  ],
+  "support": {
+    "issues": "https://drupal.org/project/issues/simple_sitemap",
+    "irc": "irc://irc.freenode.org/drupal-contribute",
+    "source": "https://cgit.drupalcode.org/simple_sitemap"
+  },
+  "license": "GPL-2.0+",
+  "minimum-stability": "dev",
+  "require": {
+    "ext-xmlwriter": "*"
+  },
+  "extra": {
+    "drush": {
+      "services": {
+        "drush.services.yml": "^9"
+      }
+    }
+  }
+}
+

web/modules/simple_sitemap/config/install/simple_sitemap.custom_links.default.yml

+links:
+  -
+    path: '/'
+    priority: '1.0'
+    changefreq: 'daily'

web/modules/simple_sitemap/config/install/simple_sitemap.settings.yml

+max_links: 2000
+cron_generate: true
+cron_generate_interval: 0
+generate_duration: 10000
+remove_duplicates: true
+skip_untranslated: true
+base_url: ''
+default_variant: 'default'
+custom_links_include_images: false
+excluded_languages: []
+enabled_entity_types:
+  - 'node'
+  - 'taxonomy_term'
+  - 'menu_link_content'

web/modules/simple_sitemap/config/install/simple_sitemap.variants.default_hreflang.yml

+variants:
+  default:
+    label: 'Default'
+    weight: 0

web/modules/simple_sitemap/config/schema/simple_sitemap.schema.yml

+simple_sitemap.settings:
+  type: config_object
+  mapping:
+    max_links:
+      label: 'Max links'
+      type: integer
+    cron_generate:
+      label: 'Cron generation'
+      type: boolean
+    cron_generate_interval:
+      label: 'Cron generation interval'
+      type: integer
+    generate_duration:
+      label: 'Generation duration'
+      type: integer
+    remove_duplicates:
+      label: 'Remove duplicates'
+      type: boolean
+    skip_untranslated:
+      label: 'Skip untranslated'
+      type: boolean
+    base_url:
+      label: 'Base URL'
+      type: string
+    default_variant:
+      label: 'Default variant'
+      type: string
+    custom_links_include_images:
+      label: 'Include images of custom links'
+      type: boolean
+    excluded_languages:
+      label: 'Excluded languages'
+      type: sequence
+      sequence:
+        type: string
+    enabled_entity_types:
+      label: 'Enabled entity types'
+      type: sequence
+      sequence:
+        type: string
+
+simple_sitemap.bundle_settings.*.*.*:
+  label: 'Entity bundle settings'
+  type: config_object
+  mapping:
+    index:
+      label: 'Index'
+      type: boolean
+    priority:
+      label: 'Priority'
+      type: string
+    changefreq:
+      label: 'Change frequency'
+      type: string
+    include_images:
+      label: 'Include images'
+      type: boolean
+
+simple_sitemap.custom_links.*:
+  label: 'Custom links'
+  type: config_object
+  mapping:
+    links:
+      label: 'Custom links'
+      type: sequence
+      sequence:
+        type: mapping
+        mapping:
+          path:
+            label: 'Path'
+            type: string
+          priority:
+            label: 'Priority'
+            type: string
+          changefreq:
+            label: 'Change frequency'
+            type: string
+
+simple_sitemap.variants.*:
+  label: 'Sitemap variants'
+  type: config_object
+  mapping:
+    variants:
+      label: 'Sitemap variants'
+      type: sequence
+      sequence:
+        type: mapping
+        mapping:
+          label:
+            label: 'Variant label'
+            type: string
+          weight:
+            label: 'Weight'
+            type: integer

web/modules/simple_sitemap/drush.services.yml

+services:
+  simple_sitemap.commands:
+    class: \Drupal\simple_sitemap\Commands\SimplesitemapCommands
+    arguments:
+      - '@simple_sitemap.generator'
+    tags:
+      - { name: drush.command }

web/modules/simple_sitemap/js/simple_sitemap.fieldsetSummaries.js

+/**
+ * @file
+ * Attaches simple_sitemap behaviors to the entity form.
+ */
+(function($) {
+
+  "use strict";
+
+  Drupal.behaviors.simple_sitemapFieldsetSummaries = {
+    attach: function(context) {
+      $(context).find('#edit-simple-sitemap').drupalSetSummary(function(context) {
+        var vals = [];
+        if ($(context).find('#edit-simple-sitemap-index-content-1').is(':checked')) {
+          vals.push(Drupal.t('Included in sitemap'));
+          vals.push(Drupal.t('Variant') + ': ' + $('#edit-simple-sitemap-variant option:selected', context).text());
+          vals.push(Drupal.t('Priority') + ': ' + $('#edit-simple-sitemap-priority option:selected', context).text());
+          vals.push(Drupal.t('Change frequency') + ': ' + $('#edit-simple-sitemap-changefreq option:selected', context).text());
+          vals.push(Drupal.t('Include images') + ': ' + $('#edit-simple-sitemap-include-images option:selected', context).text());
+        }
+        else {
+          vals.push(Drupal.t('Excluded from sitemap'));
+        }
+        return vals.join('<br />');
+      });
+    }
+  };
+})(jQuery);

web/modules/simple_sitemap/js/simple_sitemap.form.js

+/**
+ * @file
+ * Attaches simple_sitemap behaviors to the entity form.
+ */
+(function($) {
+
+  "use strict";
+
+  Drupal.behaviors.simple_sitemapForm = {
+    attach: function(context) {
+
+      // On load: Hide the 'Regenerate sitemap' field to only display it if settings have changed.
+      $('.form-item-simple-sitemap-regenerate-now').hide();
+
+      // Show 'Regenerate sitemap' field if settings have changed.
+      $("#edit-simple-sitemap-index-content"
+          + ", #edit-simple-sitemap-variant"
+          + ", #edit-simple-sitemap-priority"
+          + ", #edit-simple-sitemap-changefreq"
+          + ", #edit-simple-sitemap-include-images"
+      ).change(function() {
+        $('.form-item-simple-sitemap-regenerate-now').show();
+      });
+    }
+  };
+})(jQuery);

web/modules/simple_sitemap/js/simple_sitemap.sitemapEntities.js

+/**
+ * @file
+ * Attaches simple_sitemap behaviors to the sitemap entities form.
+ */
+(function($) {
+
+  "use strict";
+
+  Drupal.behaviors.simple_sitemapSitemapEntities = {
+    attach: function(context, settings) {
+      var allEntities = settings.simple_sitemap.all_entities;
+      var atomicEntities = settings.simple_sitemap.atomic_entities;
+
+      // Hide the 'Regenerate sitemap' field to only display it if settings have changed.
+      $('.form-item-simple-sitemap-regenerate-now').hide();
+
+      $.each(allEntities, function(index, value) {
+
+        // On load: hide all warning messages.
+        $('#warning-' + value).hide();
+
+        // On change: Show or hide warning message dependent on 'enabled' checkbox.
+        var enabledId = '#edit-' + value + '-enabled';
+        $(enabledId).change(function() {
+          if ($(enabledId).is(':checked')) {
+            $('#warning-' + value).hide();
+            $('#indexed-bundles-' + value).show();
+          }
+          else {
+            $('#warning-' + value).show();
+            $('#indexed-bundles-' + value).hide();
+          }
+
+          // Show 'Regenerate sitemap' field if 'enabled' setting has changed.
+          $('.form-item-simple-sitemap-regenerate-now').show();
+        });
+      });
+
+      // todo
+      // Show 'Regenerate sitemap' field if settings have changed.
+      // $.each(atomicEntities, function(index, value) {
+      //   var variant = '.form-item-' + value + '-simple-sitemap-variant';
+      //   var priorityId = '.form-item-' + value + '-simple-sitemap-priority';
+      //   var changefreqId = '.form-item-' + value + '-simple-sitemap-changefreq';
+      //   var includeImagesId = '.form-item-' + value + '-simple-sitemap-include-images';
+      //
+      //   $(variant, priorityId, changefreqId, includeImagesId).change(function() {
+      //     $('.form-item-simple-sitemap-regenerate-now').show();
+      //   });
+      // });
+    }
+  };
+})(jQuery);

web/modules/simple_sitemap/simple_sitemap.api.php

+<?php
+
+/**
+ * @file
+ * Hooks provided by the Simple XML sitemap module.
+ */
+
+/**
+ * @addtogroup hooks
+ * @{
+ */
+
+/**
+ * Alter the generated link data before the sitemap is saved.
+ * This hook gets invoked for every sitemap chunk generated.
+ *
+ * @param array &$links
+ *   Array containing multilingual links generated for each path to be indexed
+ *
+ * @param string|null $sitemap_variant
+ */
+function hook_simple_sitemap_links_alter(array &$links, $sitemap_variant) {
+
+  // Remove German URL for a certain path in the hreflang sitemap.
+  foreach ($links as $key => $link) {
+    if ($link['path'] === 'node/1') {
+
+      // Remove 'loc' URL if it points to a german site.
+      if ($link['langcode'] === 'de') {
+        unset($links[$key]);
+      }
+
+      // If this 'loc' URL points to a non-german site, make sure to remove
+      // its german alternate URL.
+      else {
+        if ($link['alternate_urls']['de']) {
+          unset($links[$key]['alternate_urls']['de']);
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Add arbitrary links to the sitemap.
+ *
+ * @param array &$arbitrary_links
+ * @param string|null $sitemap_variant
+ */
+function hook_simple_sitemap_arbitrary_links_alter(array &$arbitrary_links, $sitemap_variant) {
+
+  // Add an arbitrary link to all sitemap variants.
+  $arbitrary_links[] = [
+    'url' => 'http://some-arbitrary-link/',
+    'priority' => '0.5',
+
+    // An ISO8601 formatted date.
+    'lastmod' => '2012-10-12T17:40:30+02:00',
+
+    'changefreq' => 'weekly',
+    'images' => [
+      ['path' => 'http://path-to-image.png']
+    ],
+
+    // Add alternate URLs for every language of a multilingual site.
+    // Not necessary for monolingual sites.
+    'alternate_urls' => [
+      'en' => 'http://this-is-your-life.net/de/tyler',
+      'de' => 'http://this-is-your-life.net/en/tyler',
+    ]
+  ];
+
+  // Add an arbitrary link to the 'fight_club' sitemap variant only.
+  switch ($sitemap_variant) {
+    case 'fight_club':
+      $arbitrary_links[] = [
+        'url' => 'http://this-is-your-life.net/tyler',
+      ];
+      break;
+  }
+}
+
+/**
+ * Alters the sitemap attributes shortly before XML document generation.
+ * Attributes can be added, changed and removed.
+ *
+ * @param array &$attributes
+ * @param string|null $sitemap_variant
+ */
+function hook_simple_sitemap_attributes_alter(array &$attributes, $sitemap_variant) {
+
+  // Remove the xhtml attribute e.g. if no xhtml sitemap elements are present.
+  unset($attributes['xmlns:xhtml']);
+}
+
+/**
+ * Alters attributes of the sitemap index shortly before XML document generation.
+ * Attributes can be added, changed and removed.
+ *
+ * @param array &$index_attributes
+ * @param string|null $sitemap_variant
+ */
+function hook_simple_sitemap_index_attributes_alter(array &$index_attributes, $sitemap_variant) {
+
+  // Add some attribute to the sitemap index.
+  $index_attributes['name'] = 'value';
+}
+
+/**
+ * Alter properties of and remove URL generator plugins.
+ *
+ * @param array $url_generators
+ */
+function hook_simple_sitemap_url_generators_alter(array &$url_generators) {
+
+  // Remove the entity generator.
+  unset($url_generators['entity']);
+}
+
+/**
+ * Alter properties of and remove sitemap generator plugins.
+ *
+ * @param array $sitemap_generators
+ */
+function hook_simple_sitemap_sitemap_generators_alter(array &$sitemap_generators) {
+
+  // Remove the default generator.
+  unset($sitemap_generators['default']);
+}
+
+/**
+ * Alter properties of and remove sitemap type plugins.
+ *
+ * @param array $sitemap_types
+ */
+function hook_simple_sitemap_sitemap_types_alter(array &$sitemap_types) {
+
+}
+
+/**
+ * @} End of "addtogroup hooks".
+ */

web/modules/simple_sitemap/simple_sitemap.drush.inc

+<?php
+
+/**
+ * @file
+ * Drush (< 9) integration.
+ */
+
+/**
+ * Implements hook_drush_command().
+ */
+function simple_sitemap_drush_command() {
+  $items['simple-sitemap-generate'] = [
+    'description' => 'Regenerate the XML sitemaps according to the module settings.',
+    'callback' => 'drush_simple_sitemap_generate',
+    'drupal dependencies' => ['simple_sitemap'],
+    'aliases' => ['ssg'],
+  ];
+
+  $items['simple-sitemap-rebuild-queue'] = [
+    'description' => 'Rebuild the sitemap queue for all sitemap variants.',
+    'callback' => 'drush_simple_sitemap_rebuild_queue',
+    'drupal dependencies' => ['simple_sitemap'],
+    'aliases' => ['ssr'],
+  ];
+
+  return $items;
+}
+
+/**
+ * Callback function for hook_drush_command().
+ *
+ * Regenerate the XML sitemaps according to the module settings.
+ */
+function drush_simple_sitemap_generate() {
+  \Drupal::service('simple_sitemap.generator')->generateSitemap('drush');
+}
+
+/**
+ * Callback function for hook_drush_command().
+ *
+ * Rebuild the sitemap queue for all sitemap variants.
+ */
+function drush_simple_sitemap_rebuild_queue() {
+  \Drupal::service('simple_sitemap.generator')->rebuildQueue();
+}

web/modules/simple_sitemap/simple_sitemap.info.yml

+name: 'Simple XML Sitemap'
+type: module
+description: 'Creates a standard conform hreflang XML sitemap of the site content and provides a framework for developing other sitemap types.'
+configure: simple_sitemap.settings
+package: SEO
+# core: 8.x
+
+# Information added by Drupal.org packaging script on 2018-12-07
+version: '8.x-3.0'
+core: '8.x'
+project: 'simple_sitemap'
+datestamp: 1544174900

web/modules/simple_sitemap/simple_sitemap.libraries.yml

+fieldsetSummaries:
+  version: VERSION
+  js:
+    js/simple_sitemap.fieldsetSummaries.js: {}
+  dependencies:
+    - core/jquery
+form:
+  version: VERSION
+  js:
+    js/simple_sitemap.form.js: {}
+  dependencies:
+    - core/jquery
+sitemapEntities:
+  version: VERSION
+  js:
+    js/simple_sitemap.sitemapEntities.js: {}
+  dependencies:
+    - core/jquery
+    - core/drupalSettings

web/modules/simple_sitemap/simple_sitemap.links.menu.yml

+simple_sitemap.settings:
+  title: 'Simple XML sitemap'
+  description: 'Configure and generate the XML sitemap, add custom links to it.'
+  parent: system.admin_config_search
+  route_name: simple_sitemap.settings

web/modules/simple_sitemap/simple_sitemap.links.task.yml

+simple_sitemap.settings:
+  route_name: simple_sitemap.settings
+  title: 'Settings'
+  base_route: simple_sitemap.settings
+  weight: -1
+
+simple_sitemap.settings_entities:
+  route_name: simple_sitemap.settings_entities
+  title: 'Sitemap entities'
+  base_route: simple_sitemap.settings
+  weight: 0
+
+simple_sitemap.variants:
+  route_name: simple_sitemap.settings_variants
+  title: 'Sitemap variants'
+  base_route: simple_sitemap.settings
+  weight: 1
+
+simple_sitemap.settings_custom:
+  route_name: simple_sitemap.settings_custom
+  title: 'Custom links'
+  base_route: simple_sitemap.settings
+  weight: 2
+
+

web/modules/simple_sitemap/simple_sitemap.module

+<?php
+
+/**
+ * @file
+ * Main module file containing hooks.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\system\MenuInterface;
+use Drupal\language\ConfigurableLanguageInterface;
+
+/**
+ *Implements hook_help().
+ *
+ * @param $route_name
+ * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+ * @return \Drupal\Component\Render\MarkupInterface|null
+ */
+function simple_sitemap_help($route_name, RouteMatchInterface $route_match) {
+  return $route_name === 'help.page.simple_sitemap' ?
+    check_markup(file_get_contents(dirname(__FILE__) . "/README.md")) : NULL;
+}
+
+/**
+ * Implements hook_form_alter().
+ *
+ * Adds sitemap settings to entity types that are supported via plugins.
+ *
+ * @param $form
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ * @param $form_id
+ */
+function simple_sitemap_form_alter(&$form, FormStateInterface $form_state, $form_id) {
+
+  /** @var Drupal\simple_sitemap\Form\FormHelper $f */
+  $f = \Drupal::service('simple_sitemap.form_helper');
+  if (!$f->processForm($form_state)) {
+    return;
+  }
+
+  $form['simple_sitemap'] = [
+    '#type' => 'details',
+    '#group' => isset($form['additional_settings']) ? 'additional_settings' : 'advanced',
+    '#title' => t('Simple XML sitemap'),
+    '#description' => $f->getEntityCategory() === 'instance' ? t('Settings for this entity can be overridden here.') : '',
+    '#weight' => 10,
+  ];
+
+  // Attach some js magic to forms.
+  if ($f->getEntityCategory() !== 'instance') {
+    $form['#attached']['library'][] = 'simple_sitemap/form';
+  }
+
+  // Only attach fieldset summary js to 'additional settings' vertical tabs.
+  if (isset($form['additional_settings'])) {
+    $form['#attached']['library'][] = 'simple_sitemap/fieldsetSummaries';
+  }
+
+  $f->displayEntitySettings($form['simple_sitemap'])
+  // todo: do not show setting when creating new bundle.
+    ->displayRegenerateNow($form['simple_sitemap']);
+
+  // Add submission handler.
+  if (isset($form['actions']['submit']['#submit'])) {
+    foreach (array_keys($form['actions']) as $action) {
+      if ($action !== 'preview'
+        && isset($form['actions'][$action]['#type'])
+        && $form['actions'][$action]['#type'] === 'submit') {
+        $form['actions'][$action]['#submit'][] = 'simple_sitemap_entity_form_submit';
+      }
+    }
+  }
+  // Fix for account page rendering other submit handlers not usable.
+  else {
+    $form['#submit'][] = 'simple_sitemap_entity_form_submit';
+  }
+}
+
+/**
+ * Form submission handler called in hook_form_alter.
+ *
+ * @param $form
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ */
+function simple_sitemap_entity_form_submit($form, FormStateInterface &$form_state) {
+
+  /** @var Drupal\simple_sitemap\Form\FormHelper $f */
+  $f = \Drupal::service('simple_sitemap.form_helper');
+  if (!$f->processForm($form_state)) {
+    return;
+  }
+
+  $values = $form_state->getValues();
+
+  // Fix for values appearing in a sub array on a commerce product entity.
+  $values = isset($values['simple_sitemap']) ? $values['simple_sitemap'] : $values;
+
+  // Only make changes in DB if sitemap settings actually changed.
+  if ($f->valuesChanged($form, $values)) {
+
+    /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+    $generator = \Drupal::service('simple_sitemap.generator');
+
+    $settings = [
+      'index' => (bool) $values['simple_sitemap_index_content'],
+      'priority' => $values['simple_sitemap_priority'],
+      'changefreq' => $values['simple_sitemap_changefreq'],
+      'include_images' => (bool) $values['simple_sitemap_include_images'],
+    ];
+
+    // Deleting bundle settings for old bundle.
+    // See SimplesitemapEntitiesForm::submitForm().
+    // todo: This will not be necessary if "multiple variants pro bundle" is implemented.
+    if (isset($form['simple_sitemap']['simple_sitemap_variant']['#default_value'])) {
+      $old_variant = $form['simple_sitemap']['simple_sitemap_variant']['#default_value'];
+      if ($old_variant !== $values['simple_sitemap_variant']) {
+        $generator->setVariants($old_variant)->removeBundleSettings($f->getEntityTypeId(), $f->getBundleName());
+      }
+    }
+
+    switch ($f->getEntityCategory()) {
+
+      case 'bundle':
+        $generator->setVariants($values['simple_sitemap_variant'])
+          ->setBundleSettings($f->getEntityTypeId(),
+            !empty($f->getBundleName()) ? $f->getBundleName() : $f->getFormEntityId(),
+          $settings
+        );
+        break;
+
+      case 'instance':
+        $generator->setVariants($values['simple_sitemap_variant'])
+          ->setEntityInstanceSettings($f->getEntityTypeId(),
+            !empty($f->getInstanceId()) ? $f->getInstanceId() : $f->getFormEntityId(),
+            $settings
+        );
+        break;
+    }
+
+    // Regenerate sitemaps according to user setting.
+    if ($values['simple_sitemap_regenerate_now']) {
+      $generator->rebuildQueue()->generateSitemap();
+    }
+  }
+}
+
+/**
+ * Implements hook_cron().
+ */
+function simple_sitemap_cron() {
+
+  /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+  $generator = \Drupal::service('simple_sitemap.generator');
+
+  if ($generator->getSetting('cron_generate')) {
+    $interval = (int) $generator->getSetting('cron_generate_interval', 0) * 60 * 60;
+    $request_time = \Drupal::service('datetime.time')->getRequestTime();
+    $generation_in_progress = $generator->getQueueWorker()->generationInProgress();
+    $state = \Drupal::state();
+
+    if ($interval === 0
+      || $generation_in_progress
+      || (($state->get('simple_sitemap.last_cron_generate', 0) + $interval) <= $request_time)) {
+
+      if (!$generation_in_progress) {
+        $state->set('simple_sitemap.last_cron_generate', $request_time);
+      }
+
+      $generator->generateSitemap('cron');
+    }
+  }
+}
+
+/**
+ * Implements hook_ENTITY_TYPE_delete().
+ *
+ * When a language is removed from the system remove it also from settings.
+ */
+function simple_sitemap_configurable_language_delete(ConfigurableLanguageInterface $language) {
+
+  /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+  $generator = \Drupal::service('simple_sitemap.generator');
+
+  $excluded_languages = $generator->getSetting('excluded_languages');
+  if (isset($excluded_languages[$language->id()])) {
+    unset($excluded_languages[$language->id()]);
+    $generator->saveSetting('excluded_languages', $excluded_languages);
+  }
+}
+
+/**
+ * Implements hook_entity_delete().
+ *
+ * Removes settings of the removed entity.
+ *
+ * @param \Drupal\Core\Entity\EntityInterface $entity
+ */
+function simple_sitemap_entity_delete(EntityInterface $entity) {
+
+  /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+  $generator = \Drupal::service('simple_sitemap.generator');
+  $generator->setVariants(TRUE)->removeEntityInstanceSettings(
+    $entity->getEntityTypeId(), $entity->id()
+  );
+}
+
+/**
+ * Implements hook_entity_bundle_delete().
+ *
+ * Removes settings of the removed bundle.
+ *
+ * @param string $entity_type_id
+ * @param string $bundle
+ */
+function simple_sitemap_entity_bundle_delete($entity_type_id, $bundle) {
+
+  /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+  $generator = \Drupal::service('simple_sitemap.generator');
+  $generator->setVariants(TRUE)->removeBundleSettings($entity_type_id, $bundle);
+}
+
+/**
+ * Implements hook_menu_delete().
+ *
+ * Removes settings for the removed menu.
+ *
+ * @param \Drupal\system\MenuInterface $menu
+ */
+function simple_sitemap_menu_delete(MenuInterface $menu) {
+
+  /** @var \Drupal\simple_sitemap\Simplesitemap $generator */
+  $generator = \Drupal::service('simple_sitemap.generator');
+  $generator->setVariants(TRUE)->removeBundleSettings('menu_link_content', $menu->id());
+}

web/modules/simple_sitemap/simple_sitemap.permissions.yml

+administer sitemap settings:
+  title: 'Administer sitemap settings'
+  description: 'Administer Simple XML sitemap settings, alter inclusion settings of content and generate the sitemap on demand.'
+  restrict access: false