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<?php |
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declare(strict_types=1); |
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namespace ListSorter; |
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use Illuminate\Http\Request; |
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abstract class AbstractListSorter |
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{ |
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protected $request; |
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protected $sortableItems; |
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public function __construct(Request $request, array $sortableItems) |
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{ |
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$this->setRequest($request); |
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$this->setSortableItems($sortableItems); |
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} |
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/** |
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* @return string |
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*/ |
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abstract public function getSortBy(); |
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/** |
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* @return string |
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*/ |
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abstract public function getSortDir(); |
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/** |
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* @return Request |
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*/ |
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public function getRequest() |
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{ |
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return $this->request; |
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} |
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/** |
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* @param Request $request |
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*/ |
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public function setRequest(Request $request) |
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{ |
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$this->request = $request; |
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} |
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/** |
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* @return array |
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*/ |
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public function getSortableItems() |
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{ |
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return $this->sortableItems; |
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} |
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/** |
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* @param array $sortableItems |
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* |
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* @throws \Exception |
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*/ |
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public function setSortableItems(array $sortableItems) |
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{ |
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// validate aliases |
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$this->validateSortableItems($sortableItems); |
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foreach ($sortableItems as $key => $sortableItem) { |
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if (!$sortableItem instanceof SortableItem) { |
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$sortableItems[$key] = new SortableItem($sortableItem); |
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} |
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} |
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$this->sortableItems = $sortableItems; |
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} |
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/** |
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* @param array $sortableItems |
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* |
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* @throws \Exception |
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* |
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* @return bool |
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*/ |
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private function validateSortableItems(array $sortableItems) |
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{ |
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if (empty($sortableItems)) { |
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throw new \Exception('Sortable items can not be empty'); |
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} |
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if ($this->areKeysUnique($this->extractKeys($sortableItems)) !== true) { |
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throw new \Exception('Sortable item alias must be unique'); |
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} |
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return true; |
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} |
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/** |
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* @param array $sortableItems |
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* |
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* @return array |
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*/ |
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private function extractKeys(array $sortableItems) |
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{ |
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$keys = []; |
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foreach ($sortableItems as $sortableItem) { |
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if (!$sortableItem instanceof SortableItem) { |
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$keys[] = $sortableItem; |
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continue; |
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} |
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$keys[] = $sortableItem->getKey(); |
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} |
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return $keys; |
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} |
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/** |
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* @param array $aliases |
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* |
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* @return bool |
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*/ |
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private function areKeysUnique(array $aliases) |
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{ |
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if (count($aliases) === count(array_unique($aliases))) { |
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return true; |
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} |
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return false; |
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} |
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} |
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iranianpep /
list-sorter
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