<?php

namespace Chill\ThirdPartyBundle\Search;

use Chill\MainBundle\Search\SearchApiInterface;
use Chill\MainBundle\Search\SearchApiQuery;
use Chill\ThirdPartyBundle\Repository\ThirdPartyRepository;
use function explode;


/*
 * Internal note: test query for parametrizing / testing:
 *
WITH rows AS (
    SELECT 'aide a domicile en milieu rural admr' AS c, 'la roche sur yon' AS l
    UNION
    SELECT 'aide a domicile en milieu rural admr' AS c, 'fontenay-le-comte' AS l
), searches AS (
    SELECT 'admr roche' AS s, 'admr' AS s1, 'roche' As s2
    UNION
    SELECT 'admr font' AS s, 'admr' AS s1, 'font' AS s2
)
SELECT
    c, l, s, s1, s2,
    strict_word_similarity(s, c)
        + (c LIKE '%' || s1 || '%')::int
        + (c LIKE '%' || s2 || '%')::int
        + (l LIKE '%' || s1 || '%')::int
        + (l LIKE '%' || s2 || '%')::int,
    l LIKE '%' || s1 || '%',
    l LIKE '%' || s2 || '%'
FROM rows, searches
 */

/**
 * Generate query for searching amongst third parties
 */
class ThirdPartyApiSearch implements SearchApiInterface
{
    private ThirdPartyRepository $thirdPartyRepository;

    public function __construct(ThirdPartyRepository $thirdPartyRepository)
    {
        $this->thirdPartyRepository = $thirdPartyRepository;
    }

    public function provideQuery(string $pattern, array $parameters): SearchApiQuery
    {
        $query = (new SearchApiQuery)
            ->setSelectKey('tparty')
            ->setSelectJsonbMetadata("jsonb_build_object('id', tparty.id)")
            ->setFromClause('chill_3party.third_party AS tparty
                LEFT JOIN chill_main_address cma ON cma.id = tparty.address_id
                LEFT JOIN chill_main_postal_code cmpc ON cma.postcode_id = cmpc.id
                LEFT JOIN chill_3party.third_party AS parent ON tparty.parent_id = parent.id
                LEFT JOIN chill_main_address cma_p ON parent.address_id = cma_p.id
                LEFT JOIN chill_main_postal_code cmpc_p ON cma_p.postcode_id = cmpc.id')
            ->andWhereClause("tparty.active IS TRUE")
        ;

        $strs = explode(' ', $pattern);
        $wheres = [];
        $whereArgs = [];
        $pertinence = [];
        $pertinenceArgs = [];

        foreach ($strs as $str) {
           if (!empty($str)) {
               $wheres[] = "(LOWER(UNACCENT(?)) <<% tparty.canonicalized OR
                    tparty.canonicalized LIKE '%' || LOWER(UNACCENT(?)) || '%')";
               $whereArgs[] = [$str, $str];
               $pertinence[] = "STRICT_WORD_SIMILARITY(LOWER(UNACCENT(?)), tparty.canonicalized) + ".
                   "(tparty.canonicalized LIKE '%s' || LOWER(UNACCENT(?)) || '%')::int + ".
                   // take postcode label into account, but lower than the canonicalized field
                   "COALESCE((LOWER(UNACCENT(cmpc.label)) LIKE '%' || LOWER(UNACCENT(?)) || '%')::int * 0.3, 0) + ".
                   "COALESCE((LOWER(UNACCENT(cmpc_p.label)) LIKE '%' || LOWER(UNACCENT(?)) || '%')::int * 0.3, 0)";
               $pertinenceArgs[] = [$str, $str, $str, $str];
           }
        }

        $query
            ->setSelectPertinence(\implode(' + ', $pertinence), \array_merge([],
                ...$pertinenceArgs))
            ->andWhereClause(\implode(' OR ', $wheres), \array_merge([],
                ...$whereArgs));

        return $query;
    }

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

    public function prepare(array $metadatas): void
    {

    }

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

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