BookStack/app/Entities/Tools/HierarchyTransformer.php

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<?php
namespace BookStack\Entities\Tools;
use BookStack\Actions\ActivityType;
use BookStack\Entities\Models\Book;
use BookStack\Entities\Models\Bookshelf;
use BookStack\Entities\Models\Chapter;
use BookStack\Entities\Models\Page;
use BookStack\Entities\Repos\BookRepo;
use BookStack\Entities\Repos\BookshelfRepo;
use BookStack\Facades\Activity;
class HierarchyTransformer
{
protected BookRepo $bookRepo;
protected BookshelfRepo $shelfRepo;
protected Cloner $cloner;
protected TrashCan $trashCan;
public function __construct(BookRepo $bookRepo, BookshelfRepo $shelfRepo, Cloner $cloner, TrashCan $trashCan)
{
$this->bookRepo = $bookRepo;
$this->shelfRepo = $shelfRepo;
$this->cloner = $cloner;
$this->trashCan = $trashCan;
}
/**
* Transform a chapter into a book.
* Does not check permissions, check before calling.
*/
public function transformChapterToBook(Chapter $chapter): Book
{
$inputData = $this->cloner->entityToInputData($chapter);
$book = $this->bookRepo->create($inputData);
$this->cloner->copyEntityPermissions($chapter, $book);
/** @var Page $page */
foreach ($chapter->pages as $page) {
$page->chapter_id = 0;
$page->changeBook($book->id);
}
$this->trashCan->destroyEntity($chapter);
Activity::add(ActivityType::BOOK_CREATE_FROM_CHAPTER, $book);
return $book;
}
/**
* Transform a book into a shelf.
* Does not check permissions, check before calling.
*/
public function transformBookToShelf(Book $book): Bookshelf
{
$inputData = $this->cloner->entityToInputData($book);
$shelf = $this->shelfRepo->create($inputData, []);
$this->cloner->copyEntityPermissions($book, $shelf);
$shelfBookSyncData = [];
/** @var Chapter $chapter */
foreach ($book->chapters as $index => $chapter) {
$newBook = $this->transformChapterToBook($chapter);
$shelfBookSyncData[$newBook->id] = ['order' => $index];
if (!$newBook->hasPermissions()) {
$this->cloner->copyEntityPermissions($shelf, $newBook);
}
}
if ($book->directPages->count() > 0) {
$book->name .= ' ' . trans('entities.pages');
$shelfBookSyncData[$book->id] = ['order' => count($shelfBookSyncData) + 1];
$book->save();
} else {
$this->trashCan->destroyEntity($book);
}
$shelf->books()->sync($shelfBookSyncData);
Activity::add(ActivityType::BOOKSHELF_CREATE_FROM_BOOK, $shelf);
return $shelf;
}
}