<?php

namespace App\Services;

use Carbon\Carbon;
use Illuminate\Support\Str;

class VMHelperService
{
    /**
     * Get VM status display information
     */
    public static function getVmStatusInfo($vmInfo): array
    {
        $status = $vmInfo['status'] ?? null;
        
        return [
            'status' => $status,
            'isPoweredOn' => $status === 'POWERED_ON',
            'isPoweredOff' => $status === 'POWERED_OFF',
            'displayStatus' => self::getDisplayStatus($status),
            'statusClass' => self::getStatusClass($status)
        ];
    }

    /**
     * Get display status text
     */
    private static function getDisplayStatus(?string $status): string
    {
        return match($status) {
            'POWERED_ON' => __('RUNNING'),
            'POWERED_OFF' => __('STOPPED'),
            default => __('UNKNOWN')
        };
    }

    /**
     * Get status CSS class
     */
    private static function getStatusClass(?string $status): string
    {
        return match($status) {
            'POWERED_ON' => 'bg-green-500 text-white',
            'POWERED_OFF' => 'bg-red-500 text-white',
            default => 'bg-gray-500 text-white'
        };
    }

    /**
     * Get VM connection information
     */
    public static function getVmConnectionInfo($vmInfo, $invoice): array
    {
        $isWindows = self::isWindowsOS($vmInfo, $invoice);
        
        return [
            'ip' => $vmInfo['ip'] ?? '103.42.56.177',
            'port' => $isWindows ? '3389' : '22',
            'user' => $isWindows ? 'administrator' : 'root',
            'isWindows' => $isWindows
        ];
    }

    /**
     * Check if OS is Windows
     */
    private static function isWindowsOS($vmInfo, $invoice): bool
    {
        $vmOs = Str::lower($vmInfo['os'] ?? '');
        $invoiceOs = Str::lower($invoice->invoiceItem->first()->os->osGroup->name ?? '');
        
        return Str::contains($vmOs, 'windows') || Str::contains($invoiceOs, 'windows');
    }

    /**
     * Get VM specifications
     */
    public static function getVmSpecs($vmInfo): array
    {
        return [
            'cpu' => $vmInfo['cpu'] ?? '3',
            'ram' => $vmInfo['ram'] ?? '1 GB',
            'disk' => $vmInfo['disk'] ?? '25 GB'
        ];
    }

    /**
     * Format date for display
     */
    public static function formatDate($date): string
    {
        return $date ? Carbon::parse($date)->format('d/m/Y') : 'N/A';
    }

    /**
     * Format currency amount
     */
    public static function formatCurrency($amount): string
    {
        return number_format($amount ?? 0, 0, ',', '.') . ' đ';
    }

    /**
     * Get service status information
     */
    public static function getServiceStatus($invoice): array
    {
        $isExpired = $invoice->status == 1;
        
        return [
            'isExpired' => $isExpired,
            'statusText' => $isExpired ? __('Hết hạn') : __('Hoạt động'),
            'statusClass' => $isExpired ? 'bg-red-100 text-red-800' : 'bg-green-100 text-green-800'
        ];
    }
}