tide_landing_page.module

<?php

/**
 * @file
 * Tide Landing Page module functionality.
 */

use Drupal\Core\Cache\Cache;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;
use Drupal\field\Entity\FieldConfig;
use Drupal\node\NodeInterface;
use Drupal\workflows\Entity\Workflow;

/**
 * Implements hook_entity_bundle_create().
 */
function tide_landing_page_entity_bundle_create($entity_type_id, $bundle) {
  /** @var \Drupal\Core\Extension\ModuleHandlerInterface $moduleHandler */
  $moduleHandler = \Drupal::service('module_handler');

  if ($entity_type_id == 'node') {
    // Support the new content type in the Referenced Content field
    // of the Card automated paragraphs.
    $supported_paragraph_types = [
      'card_navigation_featured_auto',
      'card_navigation_auto',
      'card_promotion_auto',
    ];
    foreach ($supported_paragraph_types as $supported_paragraph_type) {
      $field_config = FieldConfig::loadByName("paragraph", $supported_paragraph_type, "field_paragraph_reference");
      if ($field_config) {
        $handler_settings = $field_config->getSetting('handler_settings');
        $handler_settings['target_bundles'][$bundle] = $bundle;
        $field_config->setSetting('handler_settings', $handler_settings);
        $field_config->save();
      }
    }

    // Enable Editorial workflow for landing page if workflow module is enabled.
    if ($bundle == 'landing_page') {
      if ($moduleHandler->moduleExists('workflows')) {
        $editorial_workflow = Workflow::load('editorial');
        if ($editorial_workflow) {
          $editorial_workflow->getTypePlugin()
            ->addEntityTypeAndBundle('node', 'landing_page');
          $editorial_workflow->save();
        }
      }
    }
  }

  // Add the Embeded webform paragraph to Landing Page component if exists.
  if ($entity_type_id == 'paragraph') {
    $field_config = FieldConfig::loadByName('node', 'landing_page', 'field_landing_page_component');
    if ($field_config) {
      $handler_settings = $field_config->getSetting('handler_settings');

      $is_embedded_webform = ($bundle == 'embedded_webform' && $moduleHandler->moduleExists('tide_webform'));
      if ($is_embedded_webform) {
        $handler_settings['target_bundles'][$bundle] = $bundle;
        $field_config->setSetting('handler_settings', $handler_settings);
        $field_config->save();
      }
    }
  }
}

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 */
function tide_landing_page_form_node_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if (in_array($form_id, [
    'node_landing_page_form',
    'node_landing_page_edit_form',
    'node_landing_page_quick_node_clone_form',
  ])) {
    if (isset($form['title']['widget'][0]['value']['#title'])) {
      $form['title']['widget'][0]['value']['#title'] = t('Page title');
    }
    if (isset($form['title']['widget'][0]['value']['#description'])) {
      $form['title']['widget'][0]['value']['#description'] = t('Include a short unique title for your page and keywords.');
    }
    if (isset($form["field_landing_page_key_journeys"]["widget"][0]["subform"]["field_paragraph_title"]["widget"][0]["value"]["#default_value"])) {
      $placeholder_value = $form["field_landing_page_key_journeys"]["widget"][0]["subform"]["field_paragraph_title"]["widget"][0]["value"]["#default_value"];
      $form["field_landing_page_key_journeys"]["widget"][0]["subform"]["field_paragraph_title"]["widget"][0]["value"]["#placeholder"] = $placeholder_value;
      unset($form["field_landing_page_key_journeys"]["widget"][0]["subform"]["field_paragraph_title"]["widget"][0]["value"]["#default_value"]);
    }
    // Change form layout.
    $form['#attached']['library'][] = 'tide_landing_page/landing_page_form';
    $form['#attributes']['class'][] = 'node-form-landing-page';

    $form['#process'][] = '_tide_landing_page_form_node_form_process';

    // Change the styling of paragraph widgets.
    $paragraph_fields = [
      'field_landing_page_header' => t('Header extra is currently blank.'),
      'field_landing_page_component' => t('Page content is currently blank.'),
    ];
    foreach ($paragraph_fields as $paragraph_field => $component_name) {
      $form[$paragraph_field]['widget']['#attributes']['class'][] = 'node-landing-page-alternative-paragraph';
      if (isset($form[$paragraph_field]['widget']['#max_delta'])) {
        $max_delta = $form[$paragraph_field]['widget']['#max_delta'];
        if ($max_delta < 0 || !isset($form[$paragraph_field]['widget'][$max_delta])) {
          $form[$paragraph_field]['widget']['#description'] = t('<h4><strong>@empty_component</strong></h4>',
              ['@empty_component' => $component_name]) . $form[$paragraph_field]['widget']['#description'];
        }
      }
    }

    // Hide the field Show Acknowledgement to Country if tide_site is missing.
    if (!\Drupal::moduleHandler()->moduleExists('tide_site')) {
      $form['field_show_ack_of_country']['#attributes']['class'][] = 'hidden';
    }

    // Move Show Hero Image caption checkbox to Hero Image field group.
    if (isset($form['field_show_hero_image_caption']) && isset($form['field_landing_page_hero_image']['widget'])) {
      $form['field_landing_page_hero_image']['widget']['field_show_hero_image_caption'] = $form['field_show_hero_image_caption'];
      unset($form['field_show_hero_image_caption']);
    }
    // Move Hero Image theme to Hero Image field group.
    if (isset($form['field_landing_page_hero_theme']) && isset($form['field_landing_page_hero_image']['widget'])) {
      $form['field_landing_page_hero_image']['widget']['field_landing_page_hero_theme'] = $form['field_landing_page_hero_theme'];
      unset($form['field_landing_page_hero_theme']);
    }

    // @todo the below block needs to be in a proper widget alter.
    if (isset($form['field_landing_page_component']['widget'][0])) {
      foreach (Element::children($form['field_landing_page_component']['widget']) as $key) {
        if (isset($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget'])) {
          foreach (Element::children($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget']) as $delta) {
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget'][$delta]['uri']['#title'] = t("CTA link");
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget'][$delta]['uri']['#description'] = t("A link to a page showing a longer list of public holidays or special dates. Start typing the title of a page in the CMS to select it or paste in a full external URL (eg http://www.example.com).");
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget'][$delta]['title']['#title'] = t("CTA text");
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_cta']['widget'][$delta]['title']['#description'] = t("Type a strong call to action that describes the content of the link destination (eg Find all public holidays).");
          }
        }

        if (isset($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_keydates']['widget']['add_more'])) {
          $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_keydates']['widget']['add_more']['add_more_button_keydates']['#value'] = t("Add another date");
        }

        if (isset($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_accordion']['widget']['add_more'])) {
          $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_accordion']['widget']['add_more']['add_more_button_accordion_content']['#value'] = t("Add another accordion item");
        }

        if (isset($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_accordion']['widget'])) {
          foreach (Element::children($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_accordion']['widget']) as $delta) {
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_accordion']['widget'][$delta]['top']['type']['label']['#markup'] = '<span class="paragraph-type-label"></span>';
          }
        }

        if (isset($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_keydates']['widget'])) {
          foreach (Element::children($form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_keydates']['widget']) as $delta) {
            $form['field_landing_page_component']['widget'][$key]['subform']['field_paragraph_keydates']['widget'][$delta]['top']['type']['label']['#markup'] = '<span class="paragraph-type-label"></span>';
          }
        }
      }
    }
  }

  // Add conditional field for show table of content.
  if (isset($form['field_node_display_headings']) && isset($form['field_show_table_of_content'])) {
    $form['field_node_display_headings']['#states'] = [
      'visible' => [
        ':input[name="field_show_table_of_content[value]"]' => [
          'checked' => TRUE,
        ],
      ],
    ];
    if (!isset($form['field_node_display_headings']['widget']['#default_value']) || empty($form['field_node_display_headings']['widget']['#default_value'])) {
      $form['field_node_display_headings']['widget']['#default_value'] = 'showH2';
    }
  }
}

/**
 * Implements hook_field_widget_single_element_WIDGET_TYPE_form_alter().
 */
function tide_landing_page_field_widget_single_element_paragraphs_form_alter(&$element, FormStateInterface $form_state, $context) {
  /** @var \Drupal\Core\Field\FieldItemListInterface $items */
  $items = $context['items'];
  $field_definition = $items->getFieldDefinition();
  $paragraph_field_name = $field_definition->getName();
  $widget_state = WidgetBase::getWidgetState($element['#field_parents'], $paragraph_field_name, $form_state);
  $paragraph = $widget_state['paragraphs'][$element['#delta']]['entity'];
  $paragraph_type = $paragraph ? $paragraph->bundle() : '';

  switch ($paragraph_type) {
    case 'embedded_search_form':
      $parent_field = $items->getName();
      $condition = [
        ':input[name="' . $parent_field . '[' . $context['delta'] . '][subform][field_paragraph_search_block]"]' => ['value' => 'custom'],
      ];
      if (!empty($element['subform']['field_paragraph_search_url']['widget'][0]['value'])) {
        $element['subform']['field_paragraph_search_url']['#states']['visible'] = $condition;
        $element['subform']['field_paragraph_search_url']['widget'][0]['value']['#states']['required'] = $condition;
      }
      if (!empty($element['subform']['field_paragraph_search_ph'])) {
        $element['subform']['field_paragraph_search_ph']['#states']['visible'] = $condition;
      }
      if (!empty($element['subform']['field_paragraph_search_target'])) {
        $element['subform']['field_paragraph_search_target']['#states']['visible'] = $condition;
      }
      break;

    // Displaying field_call_to_action_title depends on banner display type.
    case 'introduction_banner':
      if ($paragraph_field_name === 'field_landing_page_header') {
        $selector = sprintf('input[name="%s[%d][subform][%s]"]', $paragraph_field_name, $element['#delta'], 'field_banner_display_type');
        if (isset($element['subform']['field_call_to_action_title'])) {
          $element['subform']['field_call_to_action_title']['#states'] = [
            'visible' => [
              $selector => ['value' => 'buttons'],
            ],
          ];
        }
        if (isset($element['subform']['field_paragraph_links']['widget'])) {
          foreach ($element['subform']['field_paragraph_links']['widget'] as $key => $links) {
            if (is_numeric($key)) {
              $element['subform']['field_paragraph_links']['widget'][$key]['title']['#title'] = t('Link text / Button label');
            }
          }
        }
      }
      break;
  }
  if ($paragraph_field_name === 'field_landing_page_component') {
    $widget_state = WidgetBase::getWidgetState($element['#field_parents'], $paragraph_field_name, $form_state);
    $paragraph = $widget_state['paragraphs'][$element['#delta']]['entity'];
    $paragraph_type = $paragraph ? $paragraph->bundle() : '';
    // Hide table caption field in Data table component.
    if ($paragraph_type == 'data_table') {
      unset($element['subform']['field_data_table_content']['widget'][0]['caption']);
      $element['subform']['field_data_table_content']['widget'][0]['caption'] = [
        '#type' => 'textfield',
        '#default_value' => NULL,
        '#size' => 60,
        '#attributes' => ['style' => 'display: none;'],
      ];
    }
    // Add custom validation for statistics grid.
    if ($paragraph_type == 'statistics_grid') {
      if (isset($element['subform']['field_statistic_block']['widget']['#max_delta'])) {
        $element['#element_validate'][] = [
          'Drupal\tide_landing_page\Validate\StatisticsGrid',
          'validate',
        ];
      }
    }
    // Add states for navigation and promotion card paragraph type fields.
    if ($paragraph_type === 'navigation_card' || $paragraph_type === 'promotion_card') {
      if (isset($element['subform']['field_paragraph_link'])) {
        // Custom description for link field.
        $element['subform']['field_paragraph_link']['widget'][0]['uri']['#description'] = t("Start typing the title of a piece of content to select it. You can also enter an internal path such as /node/add or an external URL such as http://example.com.");
        // Custom validation based on the link field description.
        $element['subform']['field_paragraph_link']['widget'][0]['uri']['#element_validate'][] = [
          'Drupal\tide_landing_page\Validate\CardLink',
          'validate',
        ];
      }
      $dependee_field_name = 'field_paragraph_link';
      $selector = sprintf(':input[name^="%s[%d][subform][%s][0][uri]"]', $paragraph_field_name, $element['#delta'], $dependee_field_name);
      // Dependent fields.
      if (isset($element['subform']['field_paragraph_title'])) {
        $element['subform']['field_paragraph_title']['widget'][0]['value']['#states'] = [
          'visible' => [
            $selector => [
              ['value' => ['pattern' => '^http']],
              ['value' => ''],
            ],
          ],
          'required' => [
            $selector => [
              ['value' => ['pattern' => '^http']],
              ['value' => ''],
            ],
          ],
        ];
      }
      if (isset($element['subform']['field_paragraph_summary'])) {
        $element['subform']['field_paragraph_summary']['widget'][0]['value']['#states'] = [
          'visible' => [
            $selector => [
              ['value' => ['pattern' => '^http']],
              ['value' => ''],
            ],
          ],
        ];
        $element['subform']['summary_message_group'] = [
          '#type' => 'fieldset',
          '#title' => 'Page title & summary will be automatically drawn from the content you have linked to.',
          '#group_name' => 'Page summary message',
          '#attributes' => [
            'class' => [
              'summary-message-group',
            ],
          ],
          '#states' => [
            'invisible' => [
              $selector => [
                ['value' => ['pattern' => '^http']],
                ['value' => ''],
              ],
            ],
          ],
        ];
      }
      if (isset($element['subform']['field_customise'])) {
        $element['subform']['customise_field_group'] = [
          '#type' => 'fieldset',
          '#title' => 'Customise',
          '#group_name' => 'Page summary message',
          '#attributes' => [
            'class' => [
              'customise-field-group',
            ],
          ],
          '#weight' => '20',
          '#states' => [
            'invisible' => [
              $selector => [
                ['value' => ['pattern' => '^http']],
                ['value' => ''],
              ],
            ],
          ],
        ];
        $element['subform']['field_customise']['#states'] = [
          'invisible' => [
            $selector => [
              ['value' => ['pattern' => '^http']],
              ['value' => ''],
            ],
          ],
        ];
        $element['subform']['customise_field_group']['field_customise'] = $element['subform']['field_customise'];
        unset($element['subform']['field_customise']);
      }
      // Add state for media field.
      $media_dependee_field_name = '';
      $options = '';
      if (isset($element['subform']['field_promo_card_display_style'])) {
        $media_dependee_field_name = 'field_promo_card_display_style';
        $options = [
          ['value' => 'thumbnail'],
          ['value' => 'profile'],
        ];
      }
      if (isset($element['subform']['field_nav_card_display_style'])) {
        $media_dependee_field_name = 'field_nav_card_display_style';
        $options = [
          ['value' => 'thumbnail'],
          ['value' => 'featured'],
        ];
      }
      if (!empty($media_dependee_field_name) && !empty($options)) {
        $media_selector = sprintf(':input[name^="%s[%d][subform][%s]"]', $paragraph_field_name, $element['#delta'], $media_dependee_field_name);
        // Dependent field.
        if (isset($element['subform']['field_paragraph_media'])) {
          $element['subform']['field_paragraph_media']['#states'] = [
            'visible' => [
              $media_selector => $options,
              $selector => [
                ['value' => ['pattern' => '^http']],
              ],
            ],
          ];
        }
      }
    }
  }
}

/**
 * Node form #process callback.
 *
 * @param array $form
 *   Form that is being processed.
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 *   The current state of the form.
 * @param array $complete_form
 *   The complete form.
 *
 * @return array
 *   The processed form.
 */
function _tide_landing_page_form_node_form_process(array $form, FormStateInterface $form_state, array $complete_form = []) {
  /** @var \Drupal\node\NodeInterface $node */
  $node = $form_state->getFormObject()->getEntity();

  // Add pseudo radio buttons for Header style.
  $form['_header_style'] = [
    '#type' => 'container',
    '#group' => 'group_customised_header',
    '#weight' => -100,
  ];
  $form['_header_style']['_header_style_options'] = [
    '#title' => t('Header style'),
    '#description' => t('The header can be customised to incorporate photography and other design elements.'),
    '#type' => 'radios',
    '#required' => TRUE,
    '#options' => [
      'default' => t('Default appearance'),
      'fullwidth' => t('Full-width  background image'),
      'corner' => t('Corner graphics'),
      'cta' => t('Call to action banner'),
    ],
  ];

  $form['field_landing_page_hero_image']['#states']['visible'] = [
    ':input[name="_header_style_options"]' => [
      ['value' => 'fullwidth'],
      ['value' => 'cta'],
    ],
  ];
  $form['field_graphical_image']['#states']['visible'] = [
    ':input[name="_header_style_options"]' => ['value' => 'corner'],
  ];
  $form['field_bottom_graphical_image']['#states']['visible'] = [
    ':input[name="_header_style_options"]' => ['value' => 'corner'],
  ];
  $form['field_landing_page_hero_banner']['#states']['visible'] = [
    ':input[name="_header_style_options"]' => ['value' => 'cta'],
  ];

  // Determine the initial value of Header style.
  $node_hero_image_empty = $node->get('field_landing_page_hero_image')->isEmpty();
  $node_hero_banner_empty = $node->get('field_landing_page_hero_banner')->isEmpty();
  $node_hero_top_graphical_empty = $node->get('field_graphical_image')->isEmpty();
  $node_hero_bottom_graphical_empty = $node->get('field_bottom_graphical_image')->isEmpty();
  $header_style = 'default';
  if (!$node_hero_banner_empty) {
    $header_style = 'cta';
  }
  elseif (!$node_hero_image_empty) {
    $header_style = 'fullwidth';
  }
  elseif (!$node_hero_top_graphical_empty || !$node_hero_bottom_graphical_empty) {
    $header_style = 'corner';
  }
  $form['_header_style']['_header_style_options']['#default_value'] = $header_style;

  $form['#after_build'][] = '_tide_landing_page_form_node_form_after_build';
  return $form;
}

/**
 * Node form #after_build callback.
 *
 * @param array $form
 *   Form that is being processed.
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 *   The current state of the form.
 *
 * @return array
 *   The processed form.
 */
function _tide_landing_page_form_node_form_after_build(array $form, FormStateInterface $form_state) {
  // Determine the current value of Header style.
  $form_hero_image_empty = empty($form_state->getValue([
    'field_landing_page_hero_image',
    'target_id',
  ]));
  $form_hero_banner_empty = empty($form_state->getValue([
    'field_landing_page_hero_banner',
    0,
  ]));
  $form_hero_top_graphical_empty = empty($form_state->getValue([
    'field_graphical_image',
    'target_id',
  ]));
  $form_hero_bottom_graphical_empty = empty($form_state->getValue([
    'field_bottom_graphical_image',
    'target_id',
  ]));
  $header_style = 'default';
  if (!$form_hero_image_empty) {
    $header_style = 'cta';
  }
  elseif (!$form_hero_banner_empty) {
    $header_style = 'fullwidth';
  }
  elseif (!$form_hero_top_graphical_empty || !$form_hero_bottom_graphical_empty) {
    $header_style = 'corner';
  }
  $form['_header_style']['_header_style_options']['#default_value'] = $header_style;

  return $form;
}

/**
 * Get all referenced nodes for a node in promotion & navigation card paragraph.
 *
 * @param \Drupal\node\NodeInterface $node
 *   The node context.
 *
 * @return null|array
 *   The node ids.
 */
function _tide_landing_page_get_all_ref_nodes(NodeInterface $node) {
  if ($node->id()) {
    $query = \Drupal::database()->select('paragraphs_item_field_data', 'p');
    $query->fields('p', ['parent_id']);
    $query->fields('pl', ['field_paragraph_link_uri']);
    $query->leftJoin('paragraph__field_paragraph_link', 'pl', 'pl.entity_id = p.id');
    $query->condition('pl.field_paragraph_link_uri', 'entity:node/' . $node->id());
    $or = $query->orConditionGroup();
    $or->condition('type', 'navigation_card');
    $or->condition('type', 'promotion_card');
    $node_ids = $query->condition($or)->execute()->fetchCol();
    if ($node_ids) {
      $cids = [];
      foreach ($node_ids as $node_id) {
        $cids[] = 'node:' . $node_id;
      }
      return $cids;
    }
  }
  return NULL;
}

/**
 * Implements hook_ENTITY_TYPE_presave().
 */
function tide_landing_page_node_presave(NodeInterface $node) {
  if (!$node->isNew()) {
    $cids = _tide_landing_page_get_all_ref_nodes($node);
    if (!empty($cids)) {
      Cache::invalidateTags($cids);
    }
  }
}