<?php

namespace BookStack\Sorting;

class BookSortMap

{

/**

* @var BookSortMapItem[]

*/

protected $mapData = [];

public function addItem(BookSortMapItem $mapItem): void

{

$this->mapData[] = $mapItem;

}

/**

* @return BookSortMapItem[]

*/

public function all(): array

{

return $this->mapData;

}

public static function fromJson(string $json): self

{

$map = new BookSortMap();

$mapData = json_decode($json);

foreach ($mapData as $mapDataItem) {

$item = new BookSortMapItem(

intval($mapDataItem->id),

intval($mapDataItem->sort),

$mapDataItem->parentChapter ? intval($mapDataItem->parentChapter) : null,

$mapDataItem->type,

intval($mapDataItem->book)

);

$map->addItem($item);

}

return $map;

}

}