<?php

declare(strict_types=1);

/*
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Chill\ThirdPartyBundle\Repository;

use Chill\ThirdPartyBundle\Entity\ThirdParty;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\EntityRepository;
use Doctrine\ORM\Query;
use Doctrine\ORM\QueryBuilder;
use Doctrine\Persistence\ObjectRepository;
use DomainException;

use function array_key_exists;

class ThirdPartyRepository implements ObjectRepository
{
    private EntityRepository $repository;

    public function __construct(EntityManagerInterface $em)
    {
        $this->repository = $em->getRepository(ThirdParty::class);
    }

    /**
     * count amongst parties associated to $centers, with $terms parameters.
     *
     */
    public function countByMemberOfCenters(array $centers, array $terms = []): int
    {
        $qb = $this->buildQuery($centers, $terms);
        $qb->select('COUNT(tp)');

        return $qb->getQuery()->getSingleScalarResult();
    }

    public function createQueryBuilder(string $alias, ?string $indexBy = null): QueryBuilder
    {
        return $this->repository->createQueryBuilder($alias, $indexBy);
    }

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

    /**
     * @return array|ThirdParty[]
     */
    public function findAll(): array
    {
        return $this->repository->findAll();
    }

    /**
     * @param null $limit
     * @param null $offset
     *
     * @return array|ThirdParty[]
     */
    public function findBy(array $criteria, ?array $orderBy = null, $limit = null, $offset = null): array
    {
        return $this->repository->findBy($criteria, $orderBy, $limit, $offset);
    }

    /**
     * Search amongst parties associated to $centers, with $terms parameters.
     *
     * Different format for return:
     * - ['entity']: return the entity hydrated as objects
     * - ['array', [ DQL ]: return objects hydrated as entity, with
     *   an array describing the fields as DQL.
     *
     * supported terms:
     *
     * - name or _default: containing the name (name LIKE %string%)
     * - is_active: is active = true / false
     * - types: an array of types
     *
     * @param int $firstResult
     * @param int $maxResults
     * @param array $terms
     * @param string[] $returnFormat a format for returning
     */
    public function findByMemberOfCenters(array $centers, $firstResult = 0, $maxResults = 20, $terms = [], $returnFormat = ['entity']): array
    {
        $qb = $this->buildQuery($centers, $terms);

        switch ($returnFormat[0]) {
            case 'entity':
                $qb->select('tp');
                $hydrate = Query::HYDRATE_OBJECT;

                break;

            case 'array':
                $hydrate = Query::HYDRATE_ARRAY;
                $first = true;

                foreach ($returnFormat[1] as $dql) {
                    if ($first) {
                        $qb->select($dql);
                        $first = false;
                    } else {
                        $qb->addSelect($dql);
                    }
                }

                break;

            default:
                throw new DomainException('This return format is invalid');
        }
        $qb->setFirstResult($firstResult)
            ->setMaxResults($maxResults);

        return $qb->getQuery()->getResult();
    }

    public function findOneBy(array $criteria): ?ThirdParty
    {
        return $this->repository->findOneBy($criteria);
    }

    public function getClassName(): string
    {
        return ThirdParty::class;
    }

    private function buildQuery($centers, $terms): QueryBuilder
    {
        $qb = $this->createMemberOfCentersQuery($centers);
        $this->setNameCondition($qb, $terms);
        $this->setTypesCondition($qb, $terms);
        $this->setIsActiveCondition($qb, $terms);

        return $qb;
    }

    private function createMemberOfCentersQuery($centers): QueryBuilder
    {
        $qb = $this->createQueryBuilder('tp');

        $or = $qb->expr()->orX();

        foreach ($centers as $center) {
            $or->add($qb->expr()->isMemberOf(':center_' . $center->getId(), 'tp.centers'));
            $qb->setParameter('center_' . $center->getId(), $center);
        }

        $qb->where($or);

        return $qb;
    }

    private function setIsActiveCondition(QueryBuilder $qb, array $terms)
    {
        if (array_key_exists('is_active', $terms)) {
            $qb->andWhere(
                $terms['is_active'] ? $qb->expr()->eq('tp.active', "'TRUE'") :
                $qb->expr()->eq('tp.active', "'FALSE'")
            );
        }
    }

    /**
     * Add parameters to filter by containing $terms["name"] or
     * $terms["_default"].
     */
    private function setNameCondition(QueryBuilder $qb, array $terms)
    {
        if (array_key_exists('name', $terms) || array_key_exists('_default', $terms)) {
            $term = $terms['name'] ?? $terms['_default'];

            if (null === $term || '' === $term) {
                return;
            }
            $qb->andWhere($qb->expr()->like('UNACCENT(LOWER(tp.name))', 'UNACCENT(LOWER(:name))'));
            $qb->setParameter('name', '%' . $term . '%');
        }
    }

    private function setTypesCondition(QueryBuilder $qb, array $terms)
    {
        if (array_key_exists('types', $terms)) {
            $orx = $qb->expr()->orX();

            foreach ($terms['types'] as $type) {
                $orx->add('JSONB_EXISTS_IN_ARRAY(tp.type, :type_' . $type . ') = \'TRUE\'');
                $qb->setParameter('type_' . $type, $type);
            }
            $qb->andWhere($orx);
        }
    }
}