<?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\DocStoreBundle\Repository;

use Chill\DocStoreBundle\Entity\PersonDocument;
use Chill\DocStoreBundle\GenericDoc\FetchQuery;
use Chill\DocStoreBundle\GenericDoc\FetchQueryInterface;
use Chill\DocStoreBundle\GenericDoc\Providers\PersonDocumentGenericDocProvider;
use Chill\DocStoreBundle\Security\Authorization\PersonDocumentVoter;
use Chill\MainBundle\Entity\Scope;
use Chill\MainBundle\Security\Authorization\AuthorizationHelperForCurrentUserInterface;
use Chill\MainBundle\Security\Authorization\AuthorizationHelperInterface;
use Chill\MainBundle\Security\Resolver\CenterResolverDispatcher;
use Chill\MainBundle\Security\Resolver\CenterResolverDispatcherInterface;
use Chill\MainBundle\Security\Resolver\CenterResolverManagerInterface;
use Chill\PersonBundle\Entity\AccompanyingPeriod;
use Chill\PersonBundle\Entity\AccompanyingPeriodParticipation;
use Chill\PersonBundle\Entity\Person;
use DateTimeImmutable;
use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\QueryBuilder;
use Symfony\Component\Security\Core\Security;

final readonly class PersonDocumentACLAwareRepository implements PersonDocumentACLAwareRepositoryInterface
{
    public function __construct(
        private EntityManagerInterface $em,
        private CenterResolverManagerInterface $centerResolverManager,
        private AuthorizationHelperForCurrentUserInterface $authorizationHelperForCurrentUser,
        private Security $security,
    ) {
    }

    public function buildQueryByPerson(Person $person): QueryBuilder
    {
        $qb = $this->em->getRepository(PersonDocument::class)->createQueryBuilder('d');

        $qb
            ->where($qb->expr()->eq('d.person', ':person'))
            ->setParameter('person', $person);

        return $qb;
    }


    public function buildFetchQueryForPerson(Person $person, ?DateTimeImmutable $startDate = null, ?DateTimeImmutable $endDate = null, ?string $content = null): FetchQueryInterface
    {
        $query = $this->buildBaseFetchQueryForPerson($person, $startDate, $endDate, $content);

        return $this->addFetchQueryByPersonACL($query, $person);
    }

    public function buildFetchQueryForAccompanyingPeriod(AccompanyingPeriod $period, ?\DateTimeImmutable $startDate = null, ?\DateTimeImmutable $endDate = null, ?string $content = null): FetchQueryInterface
    {
        $personDocMetadata = $this->em->getClassMetadata(PersonDocument::class);
        $participationMetadata = $this->em->getClassMetadata(AccompanyingPeriodParticipation::class);

        $query = new FetchQuery(
            PersonDocumentGenericDocProvider::KEY,
            sprintf('jsonb_build_object(\'id\', person_document.%s)', $personDocMetadata->getSingleIdentifierColumnName()),
            sprintf('person_document.%s', $personDocMetadata->getColumnName('date')),
            sprintf('%s AS person_document', $personDocMetadata->getSchemaName().'.'.$personDocMetadata->getTableName())
        );

        $query->addJoinClause(
            sprintf(
                'JOIN %s AS participation ON participation.%s = person_document.%s '.
                'AND person_document.%s BETWEEN participation.%s AND COALESCE(participation.%s, \'infinity\'::date)',
                $participationMetadata->getTableName(),
                $participationMetadata->getSingleAssociationJoinColumnName('person'),
                $personDocMetadata->getSingleAssociationJoinColumnName('person'),
                $personDocMetadata->getColumnName('date'),
                $participationMetadata->getColumnName('startDate'),
                $participationMetadata->getColumnName('endDate')
            )
        );

        $query->addWhereClause(
            sprintf('participation.%s = ?', $participationMetadata->getSingleAssociationJoinColumnName('accompanyingPeriod')),
            [$period->getId()],
            [Types::INTEGER]
        );

        // can we see the document for this person ?
        $orPersonId = [];
        foreach ($period->getParticipations() as $participation) {
            if (!$this->security->isGranted(PersonDocumentVoter::SEE, $participation->getPerson())) {
                continue;
            }
            $orPersonId[] = $participation->getPerson()->getId();
        }

        if ([] === $orPersonId) {
            $query->addWhereClause('FALSE = TRUE');

            return $query;
        }

        $query->addWhereClause(
            sprintf(
                'participation.%s IN (%s)',
                $participationMetadata->getSingleAssociationJoinColumnName('person'),
                implode(', ', array_fill(0, count($orPersonId), '?'))
            ),
            $orPersonId,
            array_fill(0, count($orPersonId), Types::INTEGER)
        );

        return $this->addFilterClauses($query, $startDate, $endDate, $content);
    }

    public function buildBaseFetchQueryForPerson(Person $person, ?DateTimeImmutable $startDate = null, ?DateTimeImmutable $endDate = null, ?string $content = null): FetchQuery
    {
        $personDocMetadata = $this->em->getClassMetadata(PersonDocument::class);

        $query = new FetchQuery(
            PersonDocumentGenericDocProvider::KEY,
            sprintf('jsonb_build_object(\'id\', person_document.%s)', $personDocMetadata->getSingleIdentifierColumnName()),
            sprintf('person_document.%s', $personDocMetadata->getColumnName('date')),
            sprintf('%s AS person_document', $personDocMetadata->getSchemaName().'.'.$personDocMetadata->getTableName())
        );

        $query->addWhereClause(
            sprintf('person_document.%s = ?', $personDocMetadata->getSingleAssociationJoinColumnName('person')),
            [$person->getId()],
            [Types::INTEGER]
        );

        return $this->addFilterClauses($query, $startDate, $endDate, $content);
    }

    private function addFilterClauses(FetchQuery $query, ?DateTimeImmutable $startDate = null, ?DateTimeImmutable $endDate = null, ?string $content = null): FetchQuery
    {
        $personDocMetadata = $this->em->getClassMetadata(PersonDocument::class);

        if (null !== $startDate) {
            $query->addWhereClause(
                sprintf('? <= %s', $personDocMetadata->getColumnName('date')),
                [$startDate],
                [Types::DATE_IMMUTABLE]
            );
        }

        if (null !== $endDate) {
            $query->addWhereClause(
                sprintf('? >= %s', $personDocMetadata->getColumnName('date')),
                [$endDate],
                [Types::DATE_IMMUTABLE]
            );
        }

        if (null !== $content and '' !== $content) {
            $query->addWhereClause(
                sprintf(
                    '(%s ilike ? OR %s ilike ?)',
                    $personDocMetadata->getColumnName('title'),
                    $personDocMetadata->getColumnName('description')
                ),
                ['%' . $content . '%', '%' . $content . '%'],
                [Types::STRING, Types::STRING]
            );
        }
        return $query;
    }

    public function countByPerson(Person $person): int
    {
        $qb = $this->buildQueryByPerson($person)->select('COUNT(d)');

        $this->addACL($qb, $person);

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

    public function findByPerson(Person $person, array $orderBy = [], int $limit = 20, int $offset = 0): array
    {
        $qb = $this->buildQueryByPerson($person)->select('d');

        $this->addACL($qb, $person);

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

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

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

    private function addACL(QueryBuilder $qb, Person $person): void
    {
        $reachableScopes = [];

        foreach ($this->centerResolverManager->resolveCenters($person) as $center) {
            $reachableScopes = [
                ...$reachableScopes,
                ...$this->authorizationHelperForCurrentUser
                    ->getReachableScopes(
                        PersonDocumentVoter::SEE,
                        $center
                    )
            ];
        }

        if ([] === $reachableScopes) {
            $qb->andWhere("'FALSE' = 'TRUE'");

            return;
        }

        $qb->andWhere($qb->expr()->in('d.scope', ':scopes'))
            ->setParameter('scopes', $reachableScopes);
    }

    private function addFetchQueryByPersonACL(FetchQuery $fetchQuery, Person $person): FetchQuery
    {
        $personDocMetadata = $this->em->getClassMetadata(PersonDocument::class);

        $reachableScopes = [];

        foreach ($this->centerResolverManager->resolveCenters($person) as $center) {
            $reachableScopes = [
                ...$reachableScopes,
                ...$this->authorizationHelperForCurrentUser->getReachableScopes(PersonDocumentVoter::SEE, $center)
            ];
        }

        if ([] === $reachableScopes) {
            $fetchQuery->addWhereClause('FALSE = TRUE');

            return $fetchQuery;
        }

        $fetchQuery->addWhereClause(
            sprintf(
                'person_document.%s IN (%s)',
                $personDocMetadata->getSingleAssociationJoinColumnName('scope'),
                implode(', ', array_fill(0, count($reachableScopes), '?'))
            ),
            array_map(static fn (Scope $s) => $s->getId(), $reachableScopes),
            array_fill(0, count($reachableScopes), Types::INTEGER)
        );

        return $fetchQuery;
    }
}