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<?php

declare(strict_types=1);

namespace Laminas\Feed\Reader\Extension\Slash;

use Laminas\Feed\Reader\Extension;

use function array_key_exists;
use function explode;

class Entry extends Extension\AbstractEntry
{
    /**
     * Get the entry section
     *
     * @return null|string
     */
    public function getSection()
    {
        return $this->getData('section');
    }

    /**
     * Get the entry department
     *
     * @return null|string
     */
    public function getDepartment()
    {
        return $this->getData('department');
    }

    /**
     * Get the entry hit_parade
     *
     * @return array
     */
    public function getHitParade()
    {
        $name = 'hit_parade';

        if (isset($this->data[$name])) {
            return $this->data[$name];
        }

        $stringParade = $this->getData($name);
        $hitParade    = [];

        if (! empty($stringParade)) {
            $stringParade = explode(',', $stringParade);

            foreach ($stringParade as $hit) {
                $hitParade[] = $hit + 0; //cast to integer
            }
        }

        $this->data[$name] = $hitParade;
        return $hitParade;
    }

    /**
     * Get the entry comments
     *
     * @return int
     */
    public function getCommentCount()
    {
        $name = 'comments';

        if (isset($this->data[$name])) {
            return $this->data[$name];
        }

        $comments = $this->getData($name, 'string');

        if (! $comments) {
            $this->data[$name] = null;
            return $this->data[$name];
        }

        return $comments;
    }

    /**
     * Get the entry data specified by name
     *
     * @param  string $name
     * @param  string $type
     * @return null|mixed
     */
    protected function getData($name, $type = 'string')
    {
        if (array_key_exists($name, $this->data)) {
            return $this->data[$name];
        }

        $data = $this->xpath->evaluate($type . '(' . $this->getXpathPrefix() . '/slash10:' . $name . ')');

        if (! $data) {
            $data = null;
        }

        $this->data[$name] = $data;

        return $data;
    }

    /**
     * Register Slash namespaces
     *
     * @return void
     */
    protected function registerNamespaces()
    {
        $this->xpath->registerNamespace('slash10', 'http://purl.org/rss/1.0/modules/slash/');
    }
}