<?php

declare(strict_types=1);

namespace App\Console\Commands;

use App\Services\AlertService;
use App\Services\RconService;
use Carbon\Carbon;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Cache;

class EmulatorMonitorCommand extends Command
{
    #[\Override]
    protected $signature = 'monitor:emulator {--notify-online : Stuur een melding wanneer emulator online komt}';

    #[\Override]
    protected $description = 'Monitor de emulator status en stuur alerts bij problemen';

    private const string CACHE_KEY_EMULATOR_STATUS = 'emulator_monitor_status';

    private const string CACHE_KEY_OFFLINE_SINCE = 'emulator_offline_since';

    public function handle(AlertService $alertService): int
    {
        $this->info('Emulator status controleren...');

        $rconService = new RconService;
        $isConnected = $rconService->isConnected();

        Cache::get(self::CACHE_KEY_EMULATOR_STATUS);
        $wasOffline = Cache::has(self::CACHE_KEY_OFFLINE_SINCE);

        if ($isConnected) {
            $this->handleOnlineStatus($alertService, $wasOffline);
        } else {
            $this->handleOfflineStatus($alertService);
        }

        Cache::put(self::CACHE_KEY_EMULATOR_STATUS, [
            'connected' => $isConnected,
            'checked_at' => now()->toIso8601String(),
        ]);

        $this->info('Emulator status: ' . ($isConnected ? 'ONLINE' : 'OFFLINE'));

        return $isConnected ? Command::SUCCESS : Command::FAILURE;
    }

    private function handleOnlineStatus(AlertService $alertService, bool $wasOffline): void
    {
        if ($wasOffline && $this->option('notify-online')) {
            $offlineSince = Cache::get(self::CACHE_KEY_OFFLINE_SINCE);

            if ($offlineSince) {
                $duration = now()->diffInMinutes(Carbon::parse($offlineSince));
                $this->warn("Emulator was offline voor {$duration} minuten. Nu weer online!");
            }

            $alertService->sendEmulatorOnline();
        }

        Cache::forget(self::CACHE_KEY_OFFLINE_SINCE);
        $this->line('Emulator is online en reageert.');
    }

    private function handleOfflineStatus(AlertService $alertService): void
    {
        if (! Cache::has(self::CACHE_KEY_OFFLINE_SINCE)) {
            Cache::put(self::CACHE_KEY_OFFLINE_SINCE, now()->toIso8601String());
            $this->warn('Emulator is OFFLINE! Eerste detectie - alert wordt verzonden.');
            $alertService->sendEmulatorOffline('RCON verbinding mislukt bij monitoring check');

            return;
        }

        $offlineSince = Cache::get(self::CACHE_KEY_OFFLINE_SINCE);
        $offlineDuration = now()->diffInMinutes(Carbon::parse($offlineSince));

        $escalationMinutes = $this->getEscalationMinutes($offlineDuration);

        if ($escalationMinutes > 0 && $offlineDuration % $escalationMinutes === 0) {
            $this->warn("Emulator is al {$offlineDuration} minuten offline. Escalating alert.");
            $alertService->sendEmulatorOffline("Emulator offline voor {$offlineDuration} minuten");
        }

        $this->error("Emulator is OFFLINE! Offline sinds: {$offlineSince} ({$offlineDuration} minuten geleden)");
    }

    private function getEscalationMinutes(float|int $offlineMinutes): int
    {
        return match (true) {
            $offlineMinutes >= 60 => 30,
            $offlineMinutes >= 30 => 15,
            $offlineMinutes >= 15 => 5,
            default => 0,
        };
    }
}