<?php

declare(strict_types=1);

namespace Steuerkram\Controllers;

use Steuerkram\Models\EventLog;
use Steuerkram\Services\NextcloudWatchdog;
use Steuerkram\View;

class EventController extends BaseController
{
    private const LIMIT = 500;

    public function index(array $params): void
    {
        $filter = $this->filterFromRequest();
        $events = EventLog::find($filter, self::LIMIT);

        $view = new View();
        $view->render('layout/base.php', [
            'pageTitle' => 'Ereignisse',
            'content'   => $this->renderView('ereignisse/index', [
                'events'     => $events,
                'filter'     => $filter,
                'channels'   => EventLog::channels(),
                'watchdog'   => NextcloudWatchdog::warning(),
                'eventsHtml' => $this->renderView('ereignisse/_body', [
                    'events' => $events,
                ]),
            ]),
        ]);
    }

    public function indexData(array $params): void
    {
        $this->respondWithEvents($this->filterFromRequest());
    }

    public function nextcloudImport(array $params): void
    {
        View::redirect('/ereignisse?channel=nextcloud-import');
    }

    /** Datenquelle der bis Issue #165 eigenständigen Nextcloud-Ereignisseite. */
    public function nextcloudImportData(array $params): void
    {
        $this->respondWithEvents(['channel' => 'nextcloud-import']);
    }

    /**
     * @param array{channel?:string,level?:string} $filter
     */
    private function respondWithEvents(array $filter): void
    {
        $events = EventLog::find($filter, self::LIMIT);

        header('Content-Type: application/json');
        echo json_encode([
            'count' => count($events),
            'html'  => $this->renderView('ereignisse/_body', [
                'events' => $events,
            ]),
        ], JSON_UNESCAPED_UNICODE);
    }

    /**
     * @return array{channel?:string,level?:string}
     */
    private function filterFromRequest(): array
    {
        $filter = [];

        $channel = trim((string)($_GET['channel'] ?? ''));
        if ($channel !== '') {
            $filter['channel'] = $channel;
        }

        $level = trim((string)($_GET['level'] ?? ''));
        if (in_array($level, EventLog::LEVELS, true)) {
            $filter['level'] = $level;
        }

        return $filter;
    }
}