<?php

/**
 * @file
 * Contains dropzonejs.module.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\dropzonejs\Form\DropzoneJsUploadForm;

/**
 * Implements hook_help().
 */
function dropzonejs_help($route_name, RouteMatchInterface $route_match) {
  $output = '';
  switch ($route_name) {
    // Main module help for the dropzonejs module.
    case 'help.page.dropzonejs':
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('DropzoneJS') . '</p>';
    default:
  }
  return $output;
}

/**
 * Implements hook_theme().
 */
function dropzonejs_theme() {
  return [
    'dropzonejs' => [
      'render element' => 'element',
    ],
  ];
}

/**
 * Prepares variables for dropzone form element.
 *
 * Default template: dropzonejs.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: A render element representing the file.
 */
function template_preprocess_dropzonejs(array &$variables) {
  $translation = \Drupal::translation();
  $element = $variables['element'];

  $variables['attributes'] = [];
  if (isset($element['#id'])) {
    $variables['attributes']['id'] = $element['#id'];
  }
  if (!empty($element['#attributes']['class'])) {
    $variables['attributes']['class'] = (array) $element['#attributes']['class'];
  }
  $cardinality = 0;
  if (isset($element['#max_files'])) {
    $cardinality = $element['#max_files'];
  }

  $variables['dropzone_description'] = $element['#dropzone_description'];
  $variables['or_text'] = t('or');
  $variables['select_files_button_text'] = $translation->formatPlural($cardinality, 'Select file', 'Select files');
  $variables['uploaded_files'] = $element['uploaded_files'];
}

/**
 * Implements hook_library_info_build().
 */
function dropzonejs_library_info_build() {
  $libraries = [];

  /** @var \Drupal\Core\Asset\LibrariesDirectoryFileFinder $library_file_finder */
  $library_file_finder = \Drupal::service('library.libraries_directory_file_finder');
  $exif_path = $library_file_finder->find('exif-js/exif.js');

  if ($exif_path && file_exists($exif_path)) {
    $libraries['exif-js'] = [
      'title' => 'Exif',
      'website' => 'https://github.com/exif-js/exif-js',
      'version' => 'v2.3.0',
      'license' => [
        'name' => 'MIT',
        'url' => 'https://github.com/exif-js/exif-js/blob/master/LICENSE.md',
        'gpl-compatible' => TRUE,
      ],
      'js' => [
        '/libraries/exif-js/exif.js' => [],
      ],
    ];

  }

  return $libraries;
}

/**
 * Implements hook_library_info_alter().
 */
function dropzonejs_library_info_alter(&$libraries, $extension) {
  if ($extension !== 'dropzonejs') {
    return;
  }

  /** @var \Drupal\Core\Asset\LibrariesDirectoryFileFinder $library_file_finder */
  $library_file_finder = \Drupal::service('library.libraries_directory_file_finder');

  $js_candidates = [
    'dropzone/dropzone-min.js',
    'dropzone/dropzone.min.js',
    'dropzone/min/dropzone.min.js',
    'dropzone/dist/min/dropzone.min.js',
  ];
  foreach ($js_candidates as $js_candidate) {
    if ($js_min_path = $library_file_finder->find($js_candidate)) {
      $libraries['dropzonejs']['js'] = ['/' . $js_min_path => []];
    }
  }

  $css_candidates = [
    'dropzone/dropzone.css',
    'dropzone/min/dropzone.min.css',
    'dropzone/dist/min/dropzone.min.css',
  ];
  foreach ($css_candidates as $css_candidate) {
    if ($css_path = $library_file_finder->find($css_candidate)) {
      $libraries['dropzonejs']['css']['component'] = ['/' . $css_path => []];
    }
  }
}

/**
 * Implements hook_media_source_info_alter().
 */
function dropzonejs_media_source_info_alter(array &$sources) {
  if (isset($sources['image'])) {
    $sources['image']['forms']['media_library_add'] = DropzoneJsUploadForm::class;
  }

  if (isset($sources['video_file'])) {
    $sources['video_file']['forms']['media_library_add'] = DropzoneJsUploadForm::class;
  }

  if (isset($sources['audio_file'])) {
    $sources['audio_file']['forms']['media_library_add'] = DropzoneJsUploadForm::class;
  }

  if (isset($sources['file'])) {
    $sources['file']['forms']['media_library_add'] = DropzoneJsUploadForm::class;
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function dropzonejs_form_system_file_system_settings_alter(array &$form, FormStateInterface $form_state) {
  $dropzone_config = \Drupal::config('dropzonejs.settings');

  $form['dropzonejs_filename_sanitization'] = [
    '#type' => 'checkbox',
    '#title' => t('Enable custom filename sanitization and transliteration for DropzoneJS (deprecated)'),
    '#description' => t('When enabled, files uploaded through DropzoneJS go through a hardcoded and not customizable sanitization/transliteration process. Starting with Drupal 10.2, site-wide transliteration options are available that also always apply to files uploaded through DropzoneJS. It is recommend to configure those settings and disable this. This feature will be removed in a future version.'),
    '#weight' => 99,
    '#default_value' => $dropzone_config->get('filename_transliteration'),
  ];
  $form['#submit'][] = 'dropzonejs_form_system_file_system_settings_submit';
}

/**
 * Form submission handler for file system settings form.
 */
function dropzonejs_form_system_file_system_settings_submit(array &$form, FormStateInterface $form_state) {
  $config = \Drupal::configFactory()
    ->getEditable('dropzonejs.settings')
    ->set('filename_transliteration', $form_state->getValue('dropzonejs_filename_transliteration'));
  $config->save();
}