<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

declare(strict_types=1);

namespace PrestaShop\PrestaShop\Core\Grid\Query;

use Doctrine\DBAL\Connection;
use Doctrine\DBAL\Query\QueryBuilder;
use PrestaShop\PrestaShop\Core\Grid\Search\SearchCriteriaInterface;

/**
 * Builds search & count queries for customer's order grid.
 */
final class CustomerOrderQueryBuilder extends AbstractDoctrineQueryBuilder
{
    /**
     * @var DoctrineSearchCriteriaApplicatorInterface
     */
    private $searchCriteriaApplicator;

    /**
     * @var int
     */
    private $contextLangId;

    /**
     * @var int[]
     */
    private $contextShopIds;

    /**
     * @param Connection $connection
     * @param string $dbPrefix
     * @param DoctrineSearchCriteriaApplicatorInterface $searchCriteriaApplicator
     * @param int $contextLangId
     * @param array $contextShopIds
     */
    public function __construct(
        Connection $connection,
        string $dbPrefix,
        DoctrineSearchCriteriaApplicatorInterface $searchCriteriaApplicator,
        int $contextLangId,
        array $contextShopIds
    ) {
        parent::__construct($connection, $dbPrefix);
        $this->searchCriteriaApplicator = $searchCriteriaApplicator;
        $this->contextLangId = $contextLangId;
        $this->contextShopIds = $contextShopIds;
    }

    /**
     * {@inheritdoc}
     */
    public function getSearchQueryBuilder(SearchCriteriaInterface $searchCriteria): QueryBuilder
    {
        $qb = $this->getQueryBuilder($searchCriteria->getFilters());

        $qb->select(
            'o.`id_order`,
                o.`date_add`,
                o.`payment`,
                o.`total_paid_tax_incl`,
                "TODO" AS products,
                o.valid AS valid,
                osl.name AS status'
        );

        $qb->addSelect('
            (SELECT SUM(od.`product_quantity`) 
            FROM `' . $this->dbPrefix . 'order_detail` od 
            WHERE od.`id_order` = o.`id_order`) nb_products');

        $this->searchCriteriaApplicator
            ->applyPagination($searchCriteria, $qb)
            ->applySorting($searchCriteria, $qb)
        ;

        return $qb;
    }

    /**
     * {@inheritdoc}
     */
    public function getCountQueryBuilder(SearchCriteriaInterface $searchCriteria): QueryBuilder
    {
        return $this->getQueryBuilder($searchCriteria->getFilters())
            ->select('COUNT(DISTINCT o.`id_order`)');
    }

    /**
     * Gets query builder with the common sql used for displaying orders list and applying filter actions.
     *
     * @param array $filters
     *
     * @return QueryBuilder
     */
    private function getQueryBuilder(array $filters): QueryBuilder
    {
        $qb = $this->connection
            ->createQueryBuilder()
            ->from($this->dbPrefix . 'orders', 'o')
            ->where('o.`id_customer` != 0')
            ->leftJoin('o', $this->dbPrefix . 'order_state', 'os', 'o.current_state = os.id_order_state')
            ->leftJoin(
                'os',
                $this->dbPrefix . 'order_state_lang',
                'osl',
                'os.id_order_state = osl.id_order_state AND osl.id_lang = :context_lang_id'
            );

        $qb->andWhere('o.id_shop IN (:context_shop_ids)')
            ->setParameter('context_shop_ids', $this->contextShopIds, Connection::PARAM_INT_ARRAY)
            ->setParameter('context_lang_id', $this->contextLangId);

        $this->applyFilters($qb, $filters);

        return $qb;
    }

    /**
     * Apply filters to order query builder.
     *
     * @param array $filters
     * @param QueryBuilder $qb
     */
    private function applyFilters(QueryBuilder $qb, array $filters)
    {
        $allowedFiltersMap = [
            'id_customer' => 'o.id_customer',
        ];

        foreach ($filters as $filterName => $value) {
            if (!array_key_exists($filterName, $allowedFiltersMap) || empty($value)) {
                continue;
            }

            if ('id_customer' === $filterName) {
                $qb->andWhere('o.`id_customer` = :' . $filterName);
                $qb->setParameter($filterName, $value);
            }
        }
    }
}