pics/controllers/EditAsset.php

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<?php
/*****************************************************************************
* EditAsset.php
* Contains the asset management controller
*
* Kabuki CMS (C) 2013-2015, Aaron van Geffen
*****************************************************************************/
class EditAsset extends HTMLController
{
public function __construct()
{
if (empty($_GET['id']))
throw new Exception('Invalid request.');
$asset = Asset::fromId($_GET['id']);
if (empty($asset))
throw new NotFoundException('Asset not found');
// Can we edit this asset?
$user = Registry::get('user');
if (!($user->isAdmin() || $asset->isOwnedBy($user)))
throw new NotAllowedException();
if (isset($_REQUEST['delete']) && Session::validateSession('get'))
{
$redirectUrl = BASEURL . '/' . $asset->getSubdir();
$asset->delete();
header('Location: ' . $redirectUrl);
exit;
}
else if ((isset($_REQUEST['inc_prio']) || isset($_REQUEST['dec_prio'])) && Session::validateSession('get'))
{
if (isset($_REQUEST['inc_prio']))
$priority = $asset->priority + 1;
else
$priority = $asset->priority - 1;
$asset->priority = max(0, min(100, $priority));
$asset->save();
if (isset($_SERVER['HTTP_REFERER']))
header('Location: ' . $_SERVER['HTTP_REFERER']);
else
header('Location: ' . BASEURL . '/' . $asset->getSubdir());
exit;
}
// Get a list of available photo albums
$allAlbums = [];
foreach (PhotoAlbum::getHierarchy('tag', 'up') as $album)
$allAlbums[$album['id_tag']] = $album['tag'];
// Figure out the current album id
$currentAlbumId = 0;
$currentAlbumSlug = '';
$currentTags = $asset->getTags();
foreach ($currentTags as $tag)
{
if ($tag->kind === 'Album')
{
$currentAlbumId = $tag->id_tag;
$currentAlbumSlug = $tag->slug;
break;
}
}
if (!empty($_POST))
{
if (isset($_GET['updatethumb']))
{
$image = $asset->getImage();
return $this->updateThumb($image);
}
// Key info
if (isset($_POST['title'], $_POST['slug'], $_POST['date_captured'], $_POST['priority']))
{
$asset->date_captured = !empty($_POST['date_captured']) ?
new DateTime(str_replace('T', ' ', $_POST['date_captured'])) : null;
$asset->slug = Asset::cleanSlug($_POST['slug']);
$asset->title = htmlspecialchars($_POST['title']);
$asset->priority = intval($_POST['priority']);
$asset->save();
}
// Changing parent album?
if ($_POST['id_album'] != $currentAlbumId)
{
$targetAlbum = Tag::fromId($_POST['id_album']);
// First move the asset, then sort out the album tag
if (($retCode = $asset->moveToSubDir($targetAlbum->slug)) === true)
{
if (!isset($_POST['tag']))
$_POST['tag'] = [];
// Unset tag for current parent album
if (isset($_POST['tag'][$currentAlbumId]))
unset($_POST['tag'][$currentAlbumId]);
// Set tag for new parent album
$_POST['tag'][$_POST['id_album']] = true;
}
}
else
{
$_POST['tag'][$currentAlbumId] = true;
}
// Handle tags
$new_tags = [];
if (isset($_POST['tag']) && is_array($_POST['tag']))
{
foreach ($_POST['tag'] as $id_tag => $bool)
if (is_numeric($id_tag))
$new_tags[] = $id_tag;
}
$current_tags = array_keys($asset->getTags());
$tags_to_unlink = array_diff($current_tags, $new_tags);
$asset->unlinkTags($tags_to_unlink);
$tags_to_link = array_diff($new_tags, $current_tags);
$asset->linkTags($tags_to_link);
// Meta data
if (isset($_POST['meta_key'], $_POST['meta_value']))
{
$new_meta = array_filter(array_combine($_POST['meta_key'], $_POST['meta_value']), function($e) {
return !empty($e);
});
$asset->setMetaData($new_meta);
}
// A replacement file?
if (isset($_FILES['replacement'], $_POST['replacement_target']) && !empty($_FILES['replacement']['tmp_name']))
{
if ($_POST['replacement_target'] === 'full')
{
$asset->replaceFile($_FILES['replacement']['tmp_name']);
if ($asset->isImage())
{
$image = $asset->getImage();
$image->removeAllThumbnails();
}
}
elseif (preg_match('~^thumb_(\d+x\d+(?:_c[best]?)?)$~', $_POST['replacement_target'], $match))
{
$image = $asset->getImage();
if (($replace_result = $image->replaceThumbnail($match[1], $_FILES['replacement']['tmp_name'])) !== 0)
throw new Exception('Could not replace thumbnail \'' . $match[1] . '\' with the uploaded file. Error code: ' . $replace_result);
}
}
header('Location: ' . BASEURL . '/editasset/?id=' . $asset->getId());
}
$page = new EditAssetForm([
'asset' => $asset,
'thumbs' => $this->getThumbs($asset),
'allAlbums' => $allAlbums,
'currentAlbumId' => $currentAlbumId,
]);
parent::__construct('Edit asset \'' . $asset->getTitle() . '\' (' . $asset->getFilename() . ') - ' . SITE_TITLE);
$this->page->adopt($page);
}
private function getThumbs(Asset $asset)
{
if (!$asset->isImage())
return [];
$image = $asset->getImage();
$subdir = $image->getSubdir();
$metadata = $image->getMeta();
$thumb_selectors = $image->getThumbnails();
$thumbs = [];
foreach ($thumb_selectors as $selector => $filename)
{
if (!preg_match('~^(?<width>\d+)x(?<height>\d+)(?<suffix>_c(?<method>[best]?))?$~', $selector, $thumb))
continue;
$dimensions = $thumb['width'] . 'x' . $thumb['height'];
// Does the thumbnail exist on disk? If not, use an url to generate it.
if (!$filename || !file_exists(THUMBSDIR . '/' . $subdir . '/' . $filename))
$thumb_url = BASEURL . '/thumbnail/' . $image->getId() . '/' . $dimensions . ($thumb['suffix'] ?? '') . '/';
else
$thumb_url = THUMBSURL . '/' . $subdir . '/' . $filename;
$has_crop_boundary = isset($metadata['crop_' . $dimensions]);
$has_custom_image = isset($metadata['custom_' . $dimensions]);
$thumbs[] = [
'dimensions' => [(int) $thumb['width'], (int) $thumb['height']],
'cropped' => !$has_custom_image && (!empty($thumb['suffix']) || $has_crop_boundary),
'crop_method' => !$has_custom_image && !empty($thumb['method']) ? $thumb['method'] : (!empty($thumb['suffix']) ? 'c' : null),
'crop_region' => $has_crop_boundary ? $metadata['crop_' . $dimensions] : null,
'custom_image' => $has_custom_image,
'filename' => $filename,
'url' => $thumb_url,
];
}
return $thumbs;
}
private function updateThumb(Image $image)
{
$data = json_decode($_POST['data']);
$meta = $image->getMeta();
// Set new crop boundary.
$crop_key = 'crop_' . $data->thumb_width . 'x' . $data->thumb_height;
$crop_value = $data->crop_width . ',' . $data->crop_height . ',' . $data->source_x . ',' . $data->source_y;
$meta[$crop_key] = $crop_value;
// If we previously uploaded a custom thumbnail, stop considering it such.
$custom_key = 'custom_' . $data->thumb_width . 'x' . $data->thumb_height;
if (isset($meta[$custom_key]))
{
// TODO: delete from disk
unset($meta[$custom_key]);
}
// Save meta changes so far.
$image->setMetaData($meta);
// Force a rebuild of related thumbnails.
$image->removeThumbnailsOfSize($data->thumb_width, $data->thumb_height);
$payload = [
'key' => $crop_key,
'value' => $crop_value,
'url' => $image->getThumbnailUrl($data->thumb_width, $data->thumb_height, 'exact'),
];
header('Content-Type: text/json; charset=utf-8');
echo json_encode($payload);
exit;
}
}