<?php

namespace Chill\PersonBundle\Search;

use Chill\MainBundle\Entity\Center;
use Chill\MainBundle\Security\Authorization\AuthorizationHelperInterface;
use Chill\PersonBundle\Repository\PersonRepository;
use Chill\MainBundle\Search\SearchApiQuery;
use Chill\MainBundle\Search\SearchApiInterface;
use Chill\PersonBundle\Security\Authorization\PersonVoter;
use Symfony\Component\Security\Core\Security;

class SearchPersonApiProvider implements SearchApiInterface
{
    private PersonRepository $personRepository;
    private Security $security;
    private AuthorizationHelperInterface $authorizationHelper;

    public function __construct(PersonRepository $personRepository, Security $security, AuthorizationHelperInterface $authorizationHelper)
    {
        $this->personRepository = $personRepository;
        $this->security = $security;
        $this->authorizationHelper = $authorizationHelper;
    }

    public function provideQuery(string $pattern, array $parameters): SearchApiQuery
    {
        return $this->addAuthorizations($this->buildBaseQuery($pattern, $parameters));
    }

    public function buildBaseQuery(string $pattern, array $parameters): SearchApiQuery
    {
        $query = new SearchApiQuery();
        $query
            ->setSelectKey("person")
            ->setSelectJsonbMetadata("jsonb_build_object('id', person.id)")
            ->setSelectPertinence("".
                "STRICT_WORD_SIMILARITY(LOWER(UNACCENT(?)), person.fullnamecanonical) + ".
                "(person.fullnamecanonical LIKE '%' || LOWER(UNACCENT(?)) || '%')::int + ".
                "(EXISTS (SELECT 1 FROM unnest(string_to_array(fullnamecanonical, ' ')) AS t WHERE starts_with(t, UNACCENT(LOWER(?)))))::int"
                , [ $pattern, $pattern, $pattern ])
            ->setFromClause("chill_person_person AS person")
            ->setWhereClauses("LOWER(UNACCENT(?)) <<% person.fullnamecanonical OR ".
                "person.fullnamecanonical LIKE '%' || LOWER(UNACCENT(?)) || '%' ", [ $pattern, $pattern ])
            ;

        return $query;
    }

    private function addAuthorizations(SearchApiQuery $query): SearchApiQuery
    {
        $authorizedCenters = $this->authorizationHelper
            ->getReachableCenters($this->security->getUser(), PersonVoter::SEE);

        if ([] === $authorizedCenters) {
            return $query->andWhereClause("FALSE = TRUE", []);
        }

        return $query
            ->andWhereClause(
                strtr(
                    "person.center_id IN ({{ center_ids }})",
                    [
                        '{{ center_ids }}' => \implode(', ',
                            \array_fill(0, count($authorizedCenters), '?')),
                    ]
                ),
                \array_map(function(Center $c) {return $c->getId();}, $authorizedCenters)
        );
    }

    public function supportsTypes(string $pattern, array $types, array $parameters): bool
    {
        return \in_array('person', $types);
    }

    public function prepare(array $metadatas): void
    {
        $ids = \array_map(fn($m) => $m['id'], $metadatas);

        $this->personRepository->findByIds($ids);
    }

    public function supportsResult(string $key, array $metadatas): bool
    {
        return $key === 'person';
    }

    public function getResult(string $key, array $metadata, float $pertinence)
    {
        return $this->personRepository->find($metadata['id']);
    }
}