<?php

namespace App\Jobs\VirtualMachine\Action;

use App\Http\Services\vCenter;
use App\Mail\ChangePortRemote;
use App\Models\ModuleVmware;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Encryption\DecryptException;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Mail;
use Str;

class ChangeRemotePortJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public int $tries = 3;
    public int $timeout = 180;

    public function __construct(
        public string $productId,
        public string $newPort,
        public string $password,
        public int $userId,
        public string $email
    ) {
    }

    public function handle(vCenter $serviceVCenter): void
    {
        $product = ModuleVmware::with('ipAddress.host.datacenter.vCenter', 'os.osGroup')
            ->where('vmware_id', $this->productId)
            ->where('customer_id', $this->userId)
            ->firstOrFail();

        $osFamily = (string) ($product->os->osGroup->name ?? '');
        $isWindows = stripos($osFamily, 'windows') !== false;
        if (!$isWindows) {
            throw new \RuntimeException('Only Windows is supported by this reset job.');
        }

        $vmName = $product->ipAddress->vm_name
            ?? $product->name
            ?? $product->hostname
            ?? null;

        if (!$vmName && preg_match('/^vm-\d+$/i', (string) $product->vmware_id)) {
            $rawName = trim($serviceVCenter->runPsCommand("(Get-VM -Id '" . addslashes($product->vmware_id) . "').Name"));
            if (($p = strpos($rawName, '[STDERR]')) !== false) {
                $rawName = trim(substr($rawName, 0, $p));
            }
            $vmName = trim(preg_replace('/\s+/', ' ', $rawName));
        }
        if (!$vmName) {
            throw new \RuntimeException('Cannot resolve VM Name on vCenter.');
        }

        $guestUser = 'Administrator';

        $result = $serviceVCenter->changeRDPPortWindows(
            vmName: $vmName,
            guestUser: 'Administrator',
            guestPassword: $this->password,
            newPort: $this->newPort,
        );

        if ($result === 'Login_Fail' || $result === false || $result === null) {
            throw new \RuntimeException('SSH runner login failed.');
        }
        if (is_string($result)) {
            // Script trả non-JSON → bắn lỗi kèm raw để debug
            throw new \RuntimeException('Script returned non-JSON output: ' . $result);
        }

        /**
         * Chuẩn hoá $row:
         * - Script 1-VM: trả 1 object: ['vm'=>.., 'status'=>.., 'message'=>.., 'newPort'=>..]
         * - (Phòng hờ) Nếu lỡ trả array nhiều item, chọn item có 'vm' trùng $vmName, không thì lấy phần tử đầu.
         */
        $row = null;

        if (is_array($result)) {
            // case: object đơn
            if (isset($result['vm']) && isset($result['status'])) {
                $row = $result;
            } else {
                // case: mảng các object
                // Tìm theo vmName
                foreach ($result as $it) {
                    if (is_array($it) && (($it['vm'] ?? null) === $vmName)) {
                        $row = $it;
                        break;
                    }
                }
                // fallback: phần tử đầu tiên nếu chưa có
                if ($row === null && isset($result[0]) && is_array($result[0])) {
                    $row = $result[0];
                }
            }
        }

        if (!is_array($row) || empty($row)) {
            Log::error('ChangeRemotePortJob: invalid script response shape', ['vm' => $vmName, 'raw' => $result]);
            throw new \RuntimeException('Invalid script response.');
        }

        // Đọc trường returned
        $status = strtolower((string) ($row['status'] ?? ''));
        $message = (string) ($row['message'] ?? '');
        $newPort = (string) ($row['newPort'] ?? $this->newPort);

        // Xét thành công: status === 'ok'
        $ok = ($status === 'ok');

        Log::info('ChangeRemotePortJob: script result', [
            'vm' => $vmName,
            'status' => $status,
            'message' => $message,
            'newPort' => $newPort,
            'raw' => $row,
        ]);

        if (!$ok) {
            // Nếu muốn cho phép 'warning' pass, có thể đổi điều kiện ở trên hoặc thêm nhánh dưới:
            // if ($status === 'warning' && str_contains(strtolower($message), 'rdp port is now')) { $ok = true; }
            throw new \RuntimeException($message !== '' ? $message : ('Change RDP port failed with status: ' . $status));
        }

        // Gửi mail thông báo
        Mail::to($this->email)->send(
            new ChangePortRemote(vmName: $vmName, newPort: (string) $newPort)
        );

        Log::info('ChangeRemotePortJob: success', ['vm' => $vmName, 'newPort' => $newPort]);
    }
}