<?php
namespace App\Library;
use NilPortugues\Sql\QueryBuilder\Builder\GenericBuilder;

final class ContingentManager
{
    private static ?ContingentManager $instance;
    private ?GenericBuilder $builder;
    private function __construct()
    {
        $this->builder = new GenericBuilder();
    }

    public static function getInstance() : ContingentManager
    {
        self::$instance ??= new self();
        return self::$instance;
    }

    public function getSites(Database $db): array
    {
        // select kod as org_id, site from niimko.s_vuzes
        // where ootype = 'vuz' and deleted = 'n' and fake = 'n'
        $params = ['vuz', 'n', 'n'];
        $query = $this->builder->select()
            ->setTable('s_vuzes')
            ->setColumns(['org_id' => 'kod', 'site'])
            ->where('AND')
            ->equals('ootype', 'vuz')
            ->equals('deleted', 'n')
            ->equals('fake', 'n')
            ->end();
        $sql = $this->builder->write($query);
        $sites = $db->executeQuery($sql, $params);
        
        return $sites;
    }

    public function getSpecializations(Database $db) : array
    {
        // select id, kod from niimko.s_specs where oopkodes = 'gos3p'
        $params = ['gos3p'];
        $query = $this->builder->select()
            ->setTable('s_specs')
            ->setColumns(['id', 'kod'])
            ->where()
            ->equals('oopkodes','gos3p')
            ->end();
        $sql = $this->builder->write($query);
        $specializations = $db->executeQuery($sql, $params);
        
        return $specializations;
    }

    public function buildURL(string $url): string
    {
        // TODO - сделать base_url
        $url = "$url/sveden/education/";
        if (str_contains($url, "http://")) {
            $url = str_replace("http://","https://", $url);
        } else {
            $url = "https://$url";
        }
        $url = str_replace("www.","", $url);

        return $url;
    }

    public function addSpecId(array &$contingent, array $specializations) : void
    {
        foreach ($contingent as $key => $con) {
            $needle = $con['spec_code'];
            foreach ($specializations as $spec) {
                if ($needle == $spec['kod']) {
                    $cont['spec_id'] = $spec['id'];
                }
            }
            $contingent[$key]['spec_id'] = $cont['spec_id'];
        }
    }

    public function addOrgId(array &$contingent, int $orgId) : void
    {
        for($i = 0; $i < count($contingent); $i++) {
            $contingent[$i]['org_id'] = $orgId;
        }
    }
}