collabora_online.module

<?php

/*
 * Copyright the Collabora Online contributors.
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

use Drupal\collabora_online\Cool\CoolUtils;
use Drupal\collabora_online\CollaboraUrl;
use Drupal\collabora_online\MediaHelperInterface;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Access\AccessResultInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\media\MediaInterface;

/**
 * Implements hook_theme().
 *
 * Register a module or theme's theme implementations.  The
 * implementations declared by this hook specify how a particular
 * render array is to be rendered as HTML.
 *
 * See:
 * https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Render%21theme.api.php/function/hook_theme
 *
 * If you change this method, clear theme registry and routing table
 * 'drush cc theme-registry' and 'drush cc router'.
 */
function collabora_online_theme($existing, $type, $theme, $path) {

  return [
    'collabora_online' => [
      'render element' => 'children',
      'template' => 'collabora-online',
      'variables' => [
        'accessToken' => 'test',
        'accessTokenTtl' => '86400',
        'iFrameStyle' => 'width:95%;',
        'closebutton' => '',
        'allowfullscreen' => '',
        'wopiSrc' => 'http://localhost:9980/',
        'wopiClient' => 'https://localhost:9980/',
      ],
    ],
    // This is the template for the field preview.
    'collabora_online_preview' => [
      'render element' => 'children',
      'template' => 'collabora-online-preview',
      'variables' => [
        'editorUrl' => 'about:blank',
        'fileName' => '',
      ],
    ],
    // This is the template for the complete page with embedding.
    'collabora_online_full' => [
      'template' => 'collabora-online-full',
      'variables' => [
        'accessToken' => 'test',
        'accessTokenTtl' => '86400',
        'iFrameStyle' => '',
        'closebutton' => '',
        'allowfullscreen' => '',
        'wopiSrc' => '/wopi/files/123',
        'wopiClient' => 'https://localhost:9980/',
      ],
      'file' => 'collabora_online.theme.inc',
    ],
  ];
}

/**
 * Implements hook_entity_operation().
 *
 * This is used to add the menu entry in the Media content to
 * open the viewer/editor directly.
 */
function collabora_online_entity_operation(EntityInterface $entity) {
  if (($entity->getEntityTypeId() != "media") ||
    ($entity->getSource()->getPluginId() != "file")) {
    return [];
  }

  /** @var \Drupal\media\MediaInterface $media */
  $media = $entity;

  if (!$media->access('preview in collabora')) {
    return [];
  }

  /** @var \Drupal\collabora_online\MediaHelperInterface $media_helper */
  $media_helper = \Drupal::service(MediaHelperInterface::class);
  $file = $media_helper->getFileForMedia($media);
  $type = $file->getMimeType();

  if ($type == NULL) {
    return [];
  }

  $entries = [
    'collabora_online_view' => [
      'title' => t("View in Collabora Online"),
      'weight' => 50,
      'url' => CollaboraUrl::previewMedia($media),
    ],
  ];

  if (CoolUtils::canEdit($file) && $media->access('edit in collabora')) {
    $entries['collabora_online_edit'] = [
      'title' => t("Edit in Collabora Online"),
      'weight' => 50,
      'url' => CollaboraUrl::editMedia($media),
    ];
  }

  return $entries;
}

/**
 * Implements hook_ENTITY_TYPE_access() for 'media'.
 *
 * Checks access for the new media operations provided by this module.
 */
function collabora_online_media_access(MediaInterface $media, string $operation, AccountInterface $account): AccessResultInterface {
  $type = $media->bundle();
  switch ($operation) {
    case 'preview in collabora':
      if ($media->isPublished()) {
        return AccessResult::allowedIfHasPermission($account, "preview $type in collabora")
          ->addCacheableDependency($media);
      }
      $preview_own_permission = "preview own unpublished $type in collabora";
      $access_result = AccessResult::allowedIfHasPermission($account, $preview_own_permission)
        ->addCacheableDependency($media);
      if (!$access_result->isAllowed()) {
        return $access_result;
      }
      // Use '==' because Drupal sometimes loads integers as strings.
      $is_owner = ($account->id() && $account->id() == $media->getOwnerId());
      if ($is_owner) {
        $access_result = AccessResult::allowed();
      }
      else {
        $access_result = AccessResult::neutral()
          ->setReason("The user has the '$preview_own_permission' permission, but is not the owner of the media item.");
      }
      return $access_result
        ->cachePerUser()
        ->addCacheableDependency($media);

    case 'edit in collabora':
      if ($account->hasPermission("edit any $type in collabora")) {
        return AccessResult::allowed()
          ->cachePerPermissions();
      }
      $edit_own_permission = "edit own $type in collabora";
      $access_result = AccessResult::allowedIfHasPermission($account, $edit_own_permission);
      if (!$access_result->isAllowed()) {
        return $access_result;
      }
      // Use '==' because Drupal sometimes loads integers as strings.
      $is_owner = ($account->id() && $account->id() == $media->getOwnerId());
      if (!$is_owner) {
        $access_result = AccessResult::neutral()
          ->setReason("The user has the '$edit_own_permission' permission, but is not the owner of the media item.");
      }
      else {
        $access_result = AccessResult::allowed();
      }
      return $access_result
        ->cachePerUser()
        ->addCacheableDependency($media);

    default:
      return AccessResult::neutral();
  }
}