<?php

namespace App\Http\Services;

use App\Models\Setting;
use Carbon\Carbon;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class Telegram
{
    protected ?string $token;
    protected ?string $group;

    public function __construct()
    {
        $record = Setting::where('key', 'setting')->first();

        if ($record) {
            $setting = json_decode($record->value);
            $this->token = $setting->bot_token ?? null;
            $this->group = $setting->bot_id ?? null;
        } else {
            $this->token = null;
            $this->group = null;
        }
    }

    public function SendMessage($message = '')
    {
        if (!$this->token || !$this->group) {
            Log::channel('Custom')->warning('Telegram notification not sent: Missing bot token or group ID');
            return null;
        }

        try {
            $url = "https://api.telegram.org/bot$this->token/sendMessage?parse_mode=html&chat_id=$this->group&text=" . urlencode($message);
            $response = Http::get($url);
            
            // Log response để debug
            Log::channel('Custom')->info('Telegram sendMessage URL: ' . $url);
            Log::channel('Custom')->info('Telegram sendMessage response: ' . $response->body());
            Log::channel('Custom')->info('Telegram sendMessage status: ' . $response->status());
            
            return $response;
        } catch (\Exception $exception) {
            Log::channel('Custom')->error('Failed to send Telegram notification: ' . $exception->getMessage());
            return null;
        }
    }

    public function SendErrorMessage($data)
    {
        $msg = "Admin: Nhận được thông báo lỗi khi khởi tạo dịch vụ \n";
        $msg .= "--------------------------------\n";
        $msg .= "| " . (is_string($data) ? $data : json_encode($data)) . "\n";
        $msg .= "--------------------------------";
        return $this->SendMessage($msg);
    }

    public function SendTrialRegistration($client, array $trialConfig = [])
    {
        $msg = "🧪 Khách hàng vừa đăng ký dùng thử Cloud VPS!\n";
        $msg .= "--------------------------------\n";
        $msg .= "👤 Tên: {$client->fullname}\n";
        $msg .= "📧 Email: {$client->email}\n";
        $msg .= "📱 SĐT: {$client->phone}\n";
        $msg .= "--------------------------------\n";
        $msg .= "🖥️ CPU: " . ($trialConfig['cpu'] ?? '-') . "\n";
        $msg .= "💾 RAM: " . ($trialConfig['ram'] ?? '-') . "\n";
        $msg .= "💽 SSD: " . ($trialConfig['ssd'] ?? '-') . "\n";
        $msg .= "🧠 Hệ điều hành: " . ($trialConfig['os'] ?? '-') . "\n";
        if (!empty($trialConfig['other'])) {
            $msg .= "📝 Yêu cầu khác: {$trialConfig['other']}\n";
        }
        $msg .= "🕒 Thời gian: " . Carbon::now()->format('d/m/Y H:i:s');

        return $this->SendMessage($msg);
    }

    public function SendManualDepositPendingApproval($customer, $transaction)
    {
        $msg = "🔔 Yêu cầu nạp tiền chờ duyệt!\n";
        $msg .= "--------------------------------\n";
        $msg .= "👤 Khách: {$customer->fullname}\n";
        $msg .= "📧 Email: {$customer->email}\n";
        $msg .= "💵 Số tiền: " . number_format($transaction->amount, 0, ',', '.') . " VNĐ\n";
        $msg .= "🧾 Mã GD: {$transaction->public_code}\n";
        $msg .= "🕒 Thời gian: " . Carbon::now()->format('d/m/Y H:i:s') . "\n";
        $msg .= "--------------------------------\n";
        $msg .= "⚠️ Vui lòng vào admin để xác nhận giao dịch.";

        return $this->SendMessage($msg);
    }

    public function SendJobRunInfo($jobName, $status, $additionalInfo = null)
    {
        $msg = "⚙️ Thông báo chạy job: {$jobName}\n";
        $msg .= "⏱️ Thời gian: " . Carbon::now()->format('d/m/Y H:i:s') . "\n";
        $msg .= "📊 Trạng thái: {$status}";

        if ($additionalInfo) {
            $msg .= "\n📋 Thông tin thêm: " . (is_string($additionalInfo) ? $additionalInfo : json_encode($additionalInfo));
        }

        return $this->SendMessage($msg);
    }

    /**
     * Notify one step of the VM rebuild pipeline (success or failure).
     */
    public function SendRebuildStepNotification(string $vmName, string $ip, string $step, bool $success, ?string $note = null)
    {
        $msg = ($success ? '🔄' : '❌') . " Rebuild VPS — {$step}\n";
        $msg .= "--------------------------------\n";
        $msg .= "🖥️ VM: {$vmName}\n";
        $msg .= "🌐 IP: {$ip}\n";
        $msg .= "📊 Trạng thái: " . ($success ? 'Hoàn tất ✅' : 'Thất bại ❌') . "\n";
        if ($note) {
            $msg .= "📝 " . ($success ? 'Ghi chú' : 'Lỗi') . ": {$note}\n";
        }
        $msg .= "🕒 Thời gian: " . Carbon::now()->format('d/m/Y H:i:s') . "\n";
        $msg .= "--------------------------------";

        return $this->SendMessage($msg);
    }

    /**
     * Send a photo to Telegram group
     * @param string $filePath Local storage path (e.g. Upload/2024/06/01/image.png)
     * @param string|null $caption Optional caption for the photo
     * @return mixed|null
     */
    public function SendPhoto($filePath, $caption = null)
    {
        if (!$this->token || !$this->group) {
            Log::channel('Custom')->warning('Telegram photo not sent: Missing bot token or group ID');
            return null;
        }
        try {
            $fullPath = public_path('template/' . $filePath);
            if (!file_exists($fullPath)) {
                Log::channel('Custom')->error('Telegram photo not sent: File does not exist - ' . $fullPath);
                return null;
            }
            $multipart = [
                [
                    'name'     => 'chat_id',
                    'contents' => $this->group,
                ],
                [
                    'name'     => 'photo',
                    'contents' => fopen($fullPath, 'r'),
                ],
            ];
            if ($caption) {
                $multipart[] = [
                    'name'     => 'caption',
                    'contents' => $caption,
                ];
            }
            $response = Http::attach('photo', fopen($fullPath, 'r'), basename($fullPath))
                ->post("https://api.telegram.org/bot{$this->token}/sendPhoto", [
                    'chat_id' => $this->group,
                    'caption' => $caption,
                ]);
            return $response->json();
        } catch (\Exception $exception) {
            Log::channel('Custom')->error('Failed to send Telegram photo: ' . $exception->getMessage());
            return null;
        }
    }
}