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<?php

/* --------------------------------------------------------------
   CategoryRepository.php 2017-06-15
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2016 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

/**
 * Class CategoryRepository
 *
 * This class handles the database operations that concern the category records of the
 * database. It provides a layer for more complicated methods that use the writer, reader and deleter.
 *
 * @category   System
 * @package    Category
 * @subpackage Repositories
 */
class CategoryRepository implements CategoryRepositoryInterface
{
    /**
     * Category repository reader.
     * @var CategoryRepositoryReaderInterface
     */
    protected $reader;
    
    /**
     * Category repository writer.
     * @var CategoryRepositoryWriterInterface
     */
    protected $writer;
    
    /**
     * Category repository deleter.
     * @var CategoryRepositoryDeleterInterface
     */
    protected $deleter;
    
    /**
     * Category settings repository.
     * @var CategorySettingsRepositoryInterface
     */
    protected $settingsRepo;
    
    /**
     * Addon value service.
     * @var AddonValueServiceInterface
     */
    protected $addonValueService;
    
    /**
     * Customer Status Provider
     * @var CustomerStatusProviderInterface
     */
    protected $customerStatusProvider;
    
    /**
     * @var UrlRewriteStorage
     */
    protected $urlRewriteStorage;
    
    
    /**
     * Initialize the category repository.
     *
     * @param CategoryRepositoryReaderInterface   $reader                 Reader instance to fetch category data from
     *                                                                    the storage.
     * @param CategoryRepositoryWriterInterface   $writer                 Writer instance to store or add category data
     *                                                                    in the storage.
     * @param CategoryRepositoryDeleterInterface  $deleter                Deleter instance to remove category data from
     *                                                                    the storage.
     * @param CategorySettingsRepositoryInterface $settingsRepo           Category setting repository to
     *                                                                    save/add/remove
     *                                                                    category settings in the storage.
     * @param AddonValueServiceInterface          $addonValueService      Addon value service instance to handle the
     *                                                                    category addon values.
     * @param CustomerStatusProviderInterface     $customerStatusProvider Customer status provider to handle group
     *                                                                    permissions
     * @param UrlRewriteStorage                   $urlRewriteStorage      Url rewrite storage.
     */
    public function __construct(CategoryRepositoryReaderInterface $reader,
                                CategoryRepositoryWriterInterface $writer,
                                CategoryRepositoryDeleterInterface $deleter,
                                CategorySettingsRepositoryInterface $settingsRepo,
                                AddonValueServiceInterface $addonValueService,
                                CustomerStatusProviderInterface $customerStatusProvider,
                                UrlRewriteStorage $urlRewriteStorage)
    {
        $this->reader                 = $reader;
        $this->writer                 = $writer;
        $this->deleter                = $deleter;
        $this->settingsRepo           = $settingsRepo;
        $this->addonValueService      = $addonValueService;
        $this->customerStatusProvider = $customerStatusProvider;
        $this->urlRewriteStorage      = $urlRewriteStorage;
    }
    
    
    /**
     * Adds a category.
     *
     * @param CategoryInterface $category Category.
     *
     * @return int Stored ID of the passed category.
     */
    public function add(CategoryInterface $category)
    {
        $catId      = $this->writer->insert($category);
        $categoryId = MainFactory::create('IdType', $catId);
        
        $storedCategory = $this->reader->getById($categoryId);
        
        $storedCategory->addAddonValues($category->getAddonValues());
        $this->addonValueService->storeAddonValues($storedCategory);
        
        $storedCategory->setSettings($category->getSettings());
        $this->settingsRepo->store($categoryId, $storedCategory->getSettings());
        $this->urlRewriteStorage->set($categoryId, $category->getUrlRewrites());
        
        return $catId;
    }
    
    
    /**
     * Stores a category.
     *
     * @param StoredCategoryInterface $category Category.
     *
     * @return CategoryRepository Same instance for chained method calls.
     */
    public function store(StoredCategoryInterface $category)
    {
        $category->setLastModifiedDateTime(new DateTime());
        
        $this->writer->update($category);
        $categoryId = MainFactory::create('IdType', $category->getCategoryId());
        
        $this->settingsRepo->store($categoryId, $category->getSettings());
        $this->addonValueService->storeAddonValues($category);
        $this->urlRewriteStorage->set($categoryId, $category->getUrlRewrites());
        
        return $this;
    }
    
    
    /**
     * Gets a category by the given ID.
     *
     * @param IdType $categoryId Category ID.
     *
     * @return StoredCategoryInterface
     */
    public function getCategoryById(IdType $categoryId)
    {
        $category = $this->reader->getById($categoryId);
        $category->setSettings($this->settingsRepo->getCategorySettingsById($categoryId));
        $this->addonValueService->loadAddonValues($category);
        $category->setUrlRewrites($this->urlRewriteStorage->get($categoryId));
        
        return $category;
    }
    
    
    /**
     * Returns all Categories with the provided parent ID.
     *
     * @param IdType $parentId
     *
     * @return IdCollection
     */
    public function getCategoryIdsByParentId(IdType $parentId)
    {
        return $this->reader->getByParentId($parentId);
    }
    
    
    /**
     * Deletes a category by the given ID.
     *
     * @param IdType $categoryId Category ID.
     *
     * @return CategoryRepository Same instance for chained method calls.
     */
    public function deleteCategoryById(IdType $categoryId)
    {
        $category = $this->reader->getById($categoryId);
        $this->addonValueService->deleteAddonValues($category);
        $this->urlRewriteStorage->delete($categoryId);
        
        $categoryTreeIds = $this->getCategoryIdsTree($categoryId);
        $this->deleter->deleteRelatedProductsOfCategory($categoryTreeIds);
        
        foreach($categoryTreeIds->getArray() as $categoryTreeId)
        {
            $this->deleter->deleteById($categoryTreeId);
        }
        
        return $this;
    }
    
    
    /**
     * Returns an id collection with the ids of subcategories.
     *
     * @param \IdType $parentCategoryId Parent category id.
     *
     * @return IdCollection
     */
    public function getCategoryIdsTree(IdType $parentCategoryId)
    {
        return $this->reader->getCategoryIdsTree($parentCategoryId);
    }
}