<?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\PersonBundle\Repository\SocialWork;

use Chill\PersonBundle\Entity\SocialWork\Goal;
use Chill\PersonBundle\Entity\SocialWork\SocialAction;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\EntityRepository;
use Doctrine\ORM\NonUniqueResultException;
use Doctrine\ORM\NoResultException;
use Doctrine\ORM\QueryBuilder;
use Doctrine\Persistence\ObjectRepository;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\Clock\ClockInterface;

final readonly class GoalRepository implements ObjectRepository
{
    private EntityRepository $repository;

    public function __construct(
        private EntityManagerInterface $entityManager,
        private ClockInterface $clock,
        private RequestStack $requestStack,
    ) {
        $this->repository = $entityManager->getRepository(Goal::class);
    }

    public function countBySocialActionWithDescendants(SocialAction $action, bool $onlyActive = false): int
    {
        $qb = $this->buildQueryBySocialActionWithDescendants($action, $onlyActive);
        $qb->select('COUNT(g)');

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

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

    /**
     * @return array<int, Goal>
     */
    public function findAll(): array
    {
        return $this->repository->findAll();
    }

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

    /**
     * @return Goal[]
     */
    public function findBySocialActionWithDescendants(SocialAction $action, array $orderBy = [], ?int $limit = null, ?int $offset = null, bool $onlyActive = false): array
    {
        $qb = $this->buildQueryBySocialActionWithDescendants($action, $onlyActive);
        $qb->select('g');

        $qb->andWhere(
            $qb->expr()->orX(
                $qb->expr()->isNull('g.desactivationDate'),
                $qb->expr()->gt('g.desactivationDate', ':now')
            )
        )
            ->setParameter('now', new \DateTime('now'));

        foreach ($orderBy as $sort => $order) {
            $qb->addOrderBy('g.'.$sort, $order);
        }

        return $qb
            ->setMaxResults($limit)
            ->setFirstResult($offset)
            ->getQuery()
            ->getResult();
    }

    public function findOneBy(array $criteria, ?array $orderBy = null): ?Goal
    {
        return $this->repository->findOneBy($criteria, $orderBy);
    }

    /**
     * @return class-string
     */
    public function getClassName(): string
    {
        return Goal::class;
    }

    private function getLang(): string
    {
        return $this->requestStack->getCurrentRequest()?->getLocale() ?? 'fr';
    }

    public function getResult(
        QueryBuilder $qb,
        ?int $start = 0,
        ?int $limit = 50,
        ?array $orderBy = [],
    ): array {
        $qb->select('g');

        $qb
            ->setFirstResult($start)
            ->setMaxResults($limit);

        foreach ($orderBy as $field => $direction) {
            $qb->addOrderBy('g.'.$field, $direction);
        }

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

    private function queryByTitle(string $pattern): QueryBuilder
    {
        $qb = $this->entityManager->createQueryBuilder()->from(Goal::class, 'g');

        // search across locales by extracting the localized value
        $qb
            ->where($qb->expr()->like('LOWER(UNACCENT(JSON_EXTRACT(g.title, :lang)))', "CONCAT('%', LOWER(UNACCENT(:pattern)), '%')"))
            ->setParameter('pattern', $pattern)
            ->setParameter('lang', $this->getLang());

        return $qb;
    }

    public function buildFilterBaseQuery(?string $queryString, array $isActive): QueryBuilder
    {
        if (null !== $queryString) {
            $qb = $this->queryByTitle($queryString);
        } else {
            $qb = $this->entityManager->createQueryBuilder()->from(Goal::class, 'g');
        }

        // Active when desactivationDate is null or in the future
        $now = new \DateTime('now');
        if (in_array('Active', $isActive, true) && !in_array('Inactive', $isActive, true)) {
            $qb->andWhere(
                $qb->expr()->orX(
                    $qb->expr()->isNull('g.desactivationDate'),
                    $qb->expr()->gt('g.desactivationDate', ':now')
                )
            )->setParameter('now', $now);
        } elseif (in_array('Inactive', $isActive, true) && !in_array('Active', $isActive, true)) {
            $qb->andWhere(
                $qb->expr()->andX(
                    $qb->expr()->isNotNull('g.desactivationDate'),
                    $qb->expr()->lte('g.desactivationDate', ':now')
                )
            )->setParameter('now', $now);
        }

        return $qb;
    }

    /**
     * @return array<int, Goal>
     */
    public function findFilteredGoals(
        ?string $queryString = null,
        array $isActive = ['active'],
        ?int $start = 0,
        ?int $limit = 50,
        ?array $orderBy = ['id' => 'ASC'],
    ): array {
        $qb = $this->buildFilterBaseQuery($queryString, $isActive);

        return $this->getResult($qb, $start, $limit, $orderBy);
    }

    public function countFilteredGoals(
        ?string $queryString = null,
        array $isActive = ['active'],
    ): int {
        $qb = $this->buildFilterBaseQuery($queryString, $isActive);

        try {
            return $qb
                ->select('COUNT(g)')
                ->getQuery()->getSingleScalarResult();
        } catch (NoResultException|NonUniqueResultException $e) {
            throw new \LogicException('a count query should return one result', previous: $e);
        }
    }

    private function buildQueryBySocialActionWithDescendants(SocialAction $action, bool $onlyActive): QueryBuilder
    {
        $actions = $action->getDescendantsWithThis();

        $qb = $this->repository->createQueryBuilder('g');

        $orx = $qb->expr()->orX();
        $i = 0;

        foreach ($actions as $act) {
            $orx->add(":action_{$i} MEMBER OF g.socialActions");
            $qb->setParameter("action_{$i}", $act);
        }
        $qb->where($orx);

        if ($onlyActive) {
            $qb->andWhere('g.desactivationDate > :now OR g.desactivationDate IS NULL')
                ->setParameter('now', $this->clock->now());
        }

        return $qb;
    }
}
