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<?php
namespace Tapestry\Entities\Generators;
use Tapestry\Entities\Project;
use Tapestry\Entities\Pagination;
class CollectionItemGenerator extends FileGenerator
{
public function generate(Project $project)
{
$newFile = clone $this->file;
$newFile->setData([
'generator' => array_filter($this->file->getData('generator'), function ($value) {
return $value !== 'CollectionItemGenerator';
}),
]);
// Identify Previous and Next Item within this files collection
if ($contentType = $this->file->getData('content_type')) {
$contentType = $project->getContentType($contentType);
}
$siblings = array_keys($contentType->getFileList('asc'));
$position = array_search($this->file->getUid(), $siblings);
if (($position === (count($siblings) - 1))) {
// If we are the last page, then Pagination will only have two pages (this and the previous one), also there will
// be just two files in the items array
$pagination = new Pagination($project, [], 2, 2);
} elseif ($position === 0) {
// If we are the first page, then Pagination will only have two pages (this and the next one), also there will be
// just two files in the items array
$pagination = new Pagination($project, [], 2, 1);
} else {
// Else this is the middle page of a total of three (previous, this, next)
$pagination = new Pagination($project, [], 3, 2);
}
$pagination->setPreviousNext(
(isset($siblings[$position - 1]) ? $siblings[$position - 1] : null),
(isset($siblings[$position + 1]) ? $siblings[$position + 1] : null)
);
// @todo check to see if 'item' should be set within the view's scope; it feels weird that this is the only generator doing so
$newFile->setData(['previous_next' => $pagination, 'item' => $this->file]);
return $newFile;
}
}