<?php

declare(strict_types=1);

namespace External\ZNZBundle\Controller;

use External\ZNZBundle\Util\ZNZApi;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class ZNZMonitoringController extends AbstractController
{
    #[Route('/_znz/monitoring/changes-count/')]
    public function heliosChangesCount(ZNZApi $api): Response
    {
        $dbcfg = \Settings::getDefault();

        $monitoring = $dbcfg->loadValue('znz_monitoring') ?: [];

        $lastChangesCount = $monitoring['changesCount'] ?? null;

        try {
            $monitoring['changesCount'] = $currentChangesCount = $api->getChangesCount();
        } catch (\Throwable $e) {
            // chyba pri zjistovani poctu zmen ve fronte - nejspis se tam neda pripojit
            // tak to nechci do monitoringu, protoze to je jejich problem
            return new Response('1');
        }

        $isOK = 1;

        if ($lastChangesCount !== null) {
            $diff = $currentChangesCount - $lastChangesCount;
            if ($diff >= 0) {
                $isOK = 0;
            }
        }

        // kdyz nemam data, tak neni co kontrolovat
        if ($lastChangesCount === null) {
            $isOK = 1;
        }

        // pokud je aktualni pocet zmen 0, tak je to OK
        if ($currentChangesCount === 0) {
            $isOK = 1;
        }

        $dbcfg->saveValue('znz_monitoring', $monitoring, false);

        return new Response((string) $isOK);
    }
}