<?php

declare(strict_types=1);

namespace OCA\AnalyticsHub\Cron;

use OCA\AnalyticsHub\AppInfo;
use OCP\BackgroundJob\TimedJob;
use OCP\BackgroundJob\IJobList;
use OCP\Util\LogLevel;
use OCP\Util;
use OCA\AnalyticsHub\Service\GoogleAnalyticsService;
use OCA\AnalyticsHub\Service\TokenExpiredException;
use OCA\AnalyticsHub\Service\RateLimitException;

/**
 * Daily Report Generation Job
 * Runs Mon-Fri at 7:00 AM
 */
class DailyReportJob extends TimedJob {

    private GoogleAnalyticsService $gaService;

    public function __construct(GoogleAnalyticsService $gaService) {
        parent::__construct();
        $this->gaService = $gaService;
    }

    protected function run($argument) {
        $dayOfWeek = date('N');

        // Only run Mon-Fri (1-5)
        if ($dayOfWeek < 1 || $dayOfWeek > 5) {
            Util::writeLog('Skipping daily report (weekend)');
            return;
        }

        Util::writeLog('Starting daily report generation');

        try {
            // Generate reports for all active clients
            $results = $this->gaService->generateForAllClients();

            // Log summary
            $success = count(array_filter($results, fn($r) => $r === 'success'));
            $total = count($results);

            Util::writeLog("Daily reports complete: {$success}/{$total} successful");

            if ($success === $total) {
                Util::writeLog('All reports generated successfully');
            } else {
                Util::writeLog('Some reports failed', LogLevel::WARN);
            }

        } catch (TokenExpiredException $e) {
            Util::writeLog('❌ CRITICAL: Refresh token expired - re-run OAuth setup', LogLevel::ERROR);
        } catch (RateLimitException $e) {
            Util::writeLog('⚠️  WARNING: Rate limit exceeded', LogLevel::WARN);
        } catch (\Exception $e) {
            Util::writeLog("Daily report generation failed: {$e->getMessage()}", LogLevel::ERROR);
        }
    }

    protected function getScheduledTime(): string {
        // Mon-Fri at 7:00 AM
        return '07:00';
    }

    protected function getInterval(): int {
        // Daily
        return 86400; // 24 hours in seconds
    }
}

/**
 * Register cron jobs
 */
return [
    'app_id' => AppInfo::APP_NAME,
    'jobs' => [
        [
            'class' => DailyReportJob::class,
            'name' => 'OCA\AnalyticsHub\Cron\DailyReportJob',
        ],
    ],
];