<?php
namespace Domain\Banner;

/**
 * Repository odpowiedzialny za dostęp do danych banerów
 */
class BannerRepository
{
    private $db;

    public function __construct($db)
    {
        $this->db = $db;
    }

    /**
     * Pobiera baner po ID wraz z tłumaczeniami
     *
     * @param int $bannerId ID banera
     * @return array|null Dane banera lub null
     */
    public function find(int $bannerId): ?array
    {
        $banner = $this->db->get('pp_banners', '*', ['id' => $bannerId]);

        if (!$banner) {
            return null;
        }

        $results = $this->db->select('pp_banners_langs', '*', ['id_banner' => $bannerId]);
        if (is_array($results)) {
            foreach ($results as $row) {
                $banner['languages'][$row['id_lang']] = $row;
            }
        }

        return $banner;
    }

    /**
     * Usuwa baner
     *
     * @param int $bannerId ID banera
     * @return bool Czy usunięto
     */
    public function delete(int $bannerId): bool
    {
        $result = $this->db->delete('pp_banners', ['id' => $bannerId]);
        return $result !== false;
    }

    /**
     * Zapisuje baner (insert lub update)
     *
     * @param array $data Dane banera
     * @return int|false ID banera lub false
     */
    public function save(array $data)
    {
        $bannerId = $data['id'] ?? null;

        $bannerData = [
            'name'       => $data['name'],
            'status'     => $data['status'] == 'on' ? 1 : 0,
            'date_start' => $data['date_start'] != '' ? $data['date_start'] : null,
            'date_end'   => $data['date_end'] != '' ? $data['date_end'] : null,
            'home_page'  => $data['home_page'] == 'on' ? 1 : 0,
        ];

        if (!$bannerId) {
            $this->db->insert('pp_banners', $bannerData);
            $bannerId = $this->db->id();
            if (!$bannerId) {
                return false;
            }
        } else {
            $this->db->update('pp_banners', $bannerData, ['id' => (int)$bannerId]);
        }

        $this->saveTranslations($bannerId, $data['src'], $data['url'], $data['html'], $data['text']);

        return (int)$bannerId;
    }

    /**
     * Zapisuje tłumaczenia banera
     */
    private function saveTranslations(int $bannerId, array $src, array $url, array $html, array $text): void
    {
        foreach ($src as $langId => $val) {
            $translationData = [
                'id_banner' => $bannerId,
                'id_lang'   => $langId,
                'src'       => $src[$langId],
                'url'       => $url[$langId],
                'html'      => $html[$langId],
                'text'      => $text[$langId],
            ];

            $existingId = $this->db->get('pp_banners_langs', 'id', ['AND' => ['banner_id' => $bannerId, 'lang_id' => $langId]]);

            if ($existingId) {
                $this->db->update('pp_banners_langs', $translationData, ['id' => $existingId]);
            } else {
                $this->db->insert('pp_banners_langs', $translationData);
            }
        }
    }
}