<?php

/**
 * Matomo - free/libre analytics platform
 *
 * @link    https://matomo.org
 * @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

namespace Piwik\Plugins\Diagnostics\Diagnostic;

use Piwik\Access;
use Piwik\Common;
use Piwik\CronArchive;
use Piwik\Date;
use Piwik\Db;
use Piwik\Option;
use Piwik\SettingsPiwik;
use Piwik\Site;
use Piwik\Translation\Translator;

/**
 * Informational about Matomo reports eg tracking or archiving related
 */
class ReportInformational implements Diagnostic
{
    /**
     * @var Translator
     */
    private $translator;

    private $idSiteCache;

    public function __construct(Translator $translator)
    {
        $this->translator = $translator;
    }

    public function execute()
    {
        $results = [];

        if (SettingsPiwik::isMatomoInstalled()) {
            $results[] = DiagnosticResult::informationalResult('Had visits in last 1 day', $this->hadVisitsInLastDays(1));
            $results[] = DiagnosticResult::informationalResult('Had visits in last 3 days', $this->hadVisitsInLastDays(3));
            $results[] = DiagnosticResult::informationalResult('Had visits in last 5 days', $this->hadVisitsInLastDays(5));
            $archiveStart = Option::get(CronArchive::OPTION_ARCHIVING_STARTED_TS);
            $results[] = DiagnosticResult::informationalResult('Archive Time Last Started', ($archiveStart ? date("Y-m-d H:i:s", $archiveStart) : '-'));
            $archiveEnd = Option::get(CronArchive::OPTION_ARCHIVING_FINISHED_TS);
            $results[] = DiagnosticResult::informationalResult('Archive Time Last Finished', ($archiveEnd ? date("Y-m-d H:i:s", $archiveEnd) : '-'));
        }

        return $results;
    }

    private function hadVisitsInLastDays($numDays)
    {
        $table = Common::prefixTable('log_visit');
        $time = Date::now()->subDay($numDays)->getDatetime();

        try {
            $idSites = $this->getImplodedIdSitesSecure();
            $row = Db::fetchOne('SELECT idsite from `' . $table . '` where idsite in (' . $idSites . ') and visit_last_action_time > ? LIMIT 1', $time);
        } catch (\Exception $e) {
            $row = null;
        }

        if ($numDays === 1 && defined('PIWIK_TEST_MODE') && PIWIK_TEST_MODE) {
            return '0'; // fails randomly in tests
        }

        if (!empty($row)) {
            return '1';
        }
        return '0';
    }

    private function getImplodedIdSitesSecure()
    {
        if (empty($this->idSiteCache)) {
            $idSites = null;
            /*
             * Performed as super user to ensure we are able to fetch all available site ids.
             */
            Access::doAsSuperUser(function () use (&$idSites) {
                $idSites = Site::getIdSitesFromIdSitesString('all');
            });
            $idSites = array_map('intval', $idSites);
            $this->idSiteCache = implode(',', $idSites);
        }

        return $this->idSiteCache;
    }
}
