<?php

use Drupal\mkbh_blocks\Adapter\NodeArticleAdapter;

/**
 * Implements hook_process_hook
 *
 * @param $variables
 */
function mkbh_beforeafter_slider_process_mkbh_beforeafter_slider(&$variables) {
  $node = $variables['node'];

  /** @var NodeArticleAdapter $adapter */
  $adapter = new NodeArticleAdapter($node);
  $node_before_after_slider = $adapter->getBeforeAfterSlider();

  $fields = [];
  foreach ($variables['field_collection_items'] as $field_collection_item_id) {
    if (isset($node_before_after_slider[$field_collection_item_id])) {
      $fields[] = $node_before_after_slider[$field_collection_item_id];
    }
  }

  $has_full_width_images = FALSE;

  // Form sliders.
  $variables['sliders'] = array_map(function ($field) use (&$has_full_width_images) {
    if (empty($field['images']['before']) || empty($field['images']['after'])) {
      return [];
    }

    // Set the class name for the layout.
    $layout = $field['layout'] ?? 'default';
    $has_full_width_images = $layout === 'full-width';

    // Create a render array of images.
    $images = [];
    foreach ($field['images'] as $key => $image) {
      $images[$key] = [
        '#theme' => 'image_style',
        '#path' => $image['uri'],
        '#style_name' => 'fresco_1200',
        '#alt' => $image['alt'],
        '#attributes' => [
          'class' => sprintf('%s-image', $key),
        ],
        'label' => $image['label'],
      ];
    }

    // Create a render array.
    $build = [
      'beer_slider' => [
        '#type' => 'container',
        '#attributes' => [
          'class' => [
            'beer-slider',
            implode('-', ['layout', $layout]),
          ],
          'data-beer-label' => $images['after']['label'],
        ],
        [
          $images['after'],
          [
            '#type' => 'container',
            '#attributes' => [
              'class' => 'beer-reveal',
              'data-beer-label' => $images['before']['label'],
            ],
            [
              $images['before'],
            ],
          ],
        ],
      ],
    ];

    if (empty($field['caption']) && empty($field['photographer'])) {
      return $build;
    }

    $build['caption'] = [
      '#type' => 'container',
      '#attributes' => [
        'class' => [
          'footer',
          'beer-slider--footer'
        ],
      ],
      'content' => [
        '#type' => 'container',
        '#attributes' => [
          'class' => 'caption',
        ],
        'content' => [],
      ],
    ];

    if (!empty($field['caption'])) {
      $build['caption']['content']['content'][] = [
        '#type' => 'markup',
        '#markup' => str_pad($field['caption'], strlen($field['caption']) + 2, ' ', STR_PAD_BOTH),
      ];
    }

    if (!empty($field['photographer'])) {
      $build['caption']['content']['content'][] = [
        '#type' => 'html_tag',
        '#tag' => 'span',
        '#value' => sprintf('&nbsp;Fotograf:&nbsp;&nbsp;%s', $field['photographer']),
        '#attributes' => [
          'class' => 'photographer',
        ],
      ];
    }

    return $build;
  }, $fields);

  $variables['has_full_width_images'] = $has_full_width_images;

  drupal_add_library('mkbh_beforeafter_slider', 'beerslider');
  drupal_add_library('mkbh_beforeafter_slider', 'beerslider_initialization');
}