castopod/app/Models/CategoryModel.php

<?php

/**
 * @copyright  2020 Podlibre
 * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
 * @link       https://castopod.org/
 */

namespace App\Models;

use App\Entities\Category;
use CodeIgniter\Model;

class CategoryModel extends Model
{
    /**
     * @var string
     */
    protected $table = 'categories';
    /**
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * @var string[]
     */
    protected $allowedFields = [
        'parent_id',
        'code',
        'apple_category',
        'google_category',
    ];

    /**
     * @var string
     */
    protected $returnType = Category::class;
    /**
     * @var bool
     */
    protected $useSoftDeletes = false;

    /**
     * @var bool
     */
    protected $useTimestamps = false;

    public function getCategoryById($id): ?Category
    {
        return $this->find($id);
    }

    public function getCategoryOptions()
    {
        $locale = service('request')->getLocale();
        $cacheName = "category_options_{$locale}";

        if (!($options = cache($cacheName))) {
            $categories = $this->findAll();

            $options = array_reduce(
                $categories,
                function ($result, $category) {
                    $result[$category->id] = lang(
                        'Podcast.category_options.' . $category->code,
                    );
                    return $result;
                },
                [],
            );

            cache()->save($cacheName, $options, DECADE);
        }

        return $options;
    }

    /**
     * Sets categories for a given podcast
     *
     * @return int|bool Number of rows inserted or FALSE on failure
     */
    public function setPodcastCategories(int $podcastId, ?array $categories)
    {
        cache()->delete("podcast#{$podcastId}_categories");

        // Remove already previously set categories to overwrite them
        $this->db
            ->table('podcasts_categories')
            ->delete(['podcast_id' => $podcastId]);

        if (empty($categories)) {
            // no row has been inserted after deletion
            return 0;
        }

        // prepare data for `podcasts_categories` table
        $data = array_reduce(
            $categories,
            function ($result, $categoryId) use ($podcastId) {
                $result[] = [
                    'podcast_id' => $podcastId,
                    'category_id' => $categoryId,
                ];

                return $result;
            },
            [],
        );

        // Set podcast categories
        return $this->db->table('podcasts_categories')->insertBatch($data);
    }

    /**
     * Gets all the podcast categories
     *
     * @return Category[]
     */
    public function getPodcastCategories(int $podcastId): array
    {
        $cacheName = "podcast#{$podcastId}_categories";
        if (!($categories = cache($cacheName))) {
            $categories = $this->select('categories.*')
                ->join(
                    'podcasts_categories',
                    'podcasts_categories.category_id = categories.id',
                )
                ->where('podcasts_categories.podcast_id', $podcastId)
                ->findAll();

            cache()->save($cacheName, $categories, DECADE);
        }

        return $categories;
    }
}