<?php

namespace App\Http\Services;

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

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

    // Discord embed colors
    const COLOR_SUCCESS = 3066993;  // Green
    const COLOR_ERROR = 15158332;   // Red
    const COLOR_INFO = 3447003;     // Blue
    const COLOR_WARNING = 16776960; // Yellow
    const COLOR_VIP = 16711935;     // Purple

    public function __construct()
    {
        $record = Setting::where('key', 'setting')->first();
        if ($record) {
            $setting = json_decode($record->value);
            $this->token = $setting->discord_webhook_id ?? null;
            $this->group = $setting->discord_webhook_token ?? null;
        } else {
            $this->token = null;
            $this->group = null;
        }
    }

    protected function sendDiscordMessage(array $payload)
    {
        if (!$this->token || !$this->group) {
            Log::channel('Custom')->warning('Discord notification not sent: Missing webhook ID or token');
            return null;
        }

        $webhookUrl = "https://discord.com/api/webhooks/{$this->token}/{$this->group}";

        try {
            return Http::post($webhookUrl, $payload);
        } catch (\Exception $exception) {
            Log::channel('Custom')->error('Failed to send Discord notification: ' . $exception->getMessage());
            return null;
        }
    }

    /**
     * Send simple message with embed
     */
    public function SendMessage($message = '', $color = self::COLOR_INFO, $title = null)
    {
        $embed = [
            'description' => $message,
            'color' => $color,
            'timestamp' => now()->toIso8601String(),
        ];

        if ($title) {
            $embed['title'] = $title;
        }

        $payload = [
            'embeds' => [$embed]
        ];

        return $this->sendDiscordMessage($payload);
    }

    /**
     * Send error message with embed
     */
    public function NotifyDiscordFailure($reason, $data = null)
    {
        $fields = [
            [
                'name' => '🚫 Lý do lỗi',
                'value' => $reason,
                'inline' => false,
            ],
        ];

        if ($data) {
            $fields[] = [
                'name' => '📄 Dữ liệu liên quan',
                'value' => "```json\n" . substr(json_encode($data, JSON_PRETTY_PRINT), 0, 1000) . "\n```",
                'inline' => false,
            ];
        }

        $embed = [
            'title' => '🔴 Gửi Discord thất bại',
            'color' => self::COLOR_ERROR,
            'fields' => $fields,
            'timestamp' => now()->toIso8601String(),
        ];

        Log::channel('Custom')->error('NotifyDiscordFailure: ' . $reason, ['data' => $data]);

        return null;
    }

    /**
     * Send VPS information with enhanced embed
     */
    public function SendInformation($product = [], $user = '', $password = '', $port = 22)
    {
        $fields = [
            [
                'name' => '🌐 Địa chỉ IP',
                'value' => isset($product->IpAddress->ip) ? $product->IpAddress->ip : 'N/A',
                'inline' => true,
            ],
            [
                'name' => '👤 Tài khoản',
                'value' => $user ?: 'root',
                'inline' => true,
            ],
            [
                'name' => '🔌 Cổng SSH',
                'value' => (string) $port,
                'inline' => true,
            ],
            [
                'name' => '🔐 Mật khẩu',
                'value' => "||{$password}||", // Spoiler text
                'inline' => true,
            ],
            [
                'name' => '⏰ Hết hạn',
                'value' => isset($product->next_due_date) ?
                    Carbon::parse($product->next_due_date)->format('d/m/Y H:i') : 'Không giới hạn',
                'inline' => true,
            ],
            [
                'name' => '💻 Hệ điều hành',
                'value' => (isset($product->Os->OsGroup->name) ? $product->Os->OsGroup->name : '') . ' ' . (isset($product->Os->version) ? $product->Os->version : ''),
                'inline' => true,
            ],
        ];

        // Add SSH command
        $ipAddress = isset($product->IpAddress->ip) ? $product->IpAddress->ip : 'IP_ADDRESS';
        $sshCommand = "ssh {$user}@{$ipAddress}";
        if ($port != 22) {
            $sshCommand .= " -p {$port}";
        }

        $embed = [
            'title' => '🎉 VPS đã được khởi tạo thành công!',
            'description' => "**Đơn hàng:** #" . (isset($product->order_id) ? $product->order_id : '') . "\n**SSH Command:**\n```bash\n{$sshCommand}\n```",
            'color' => self::COLOR_SUCCESS,
            'fields' => $fields,
            'footer' => [
                'text' => 'VPS Management System',
                'icon_url' => 'https://cdn-icons-png.flaticon.com/512/868/868681.png'
            ],
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send error message with enhanced formatting
     */
    public function SendErrorMessage($data, $context = null)
    {
        $content = is_string($data) ? $data : json_encode($data, JSON_PRETTY_PRINT);

        $fields = [];
        if ($context) {
            $fields[] = [
                'name' => '📍 Ngữ cảnh',
                'value' => $context,
                'inline' => false,
            ];
        }

        $fields[] = [
            'name' => '⚠️ Chi tiết lỗi',
            'value' => "```json\n" . substr($content, 0, 1000) . "\n```",
            'inline' => false,
        ];

        $embed = [
            'title' => '🚨 Lỗi hệ thống',
            'description' => '**Admin:** Đã xảy ra lỗi trong quá trình xử lý dịch vụ',
            'color' => self::COLOR_ERROR,
            'fields' => $fields,
            'footer' => [
                'text' => 'Error Notification System'
            ],
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send new user registration notification
     */
    public function SendNewUserRegistration($email, $code, $verificationLink)
    {
        $fields = [
            [
                'name' => '📧 Email đăng ký',
                'value' => $email,
                'inline' => true,
            ],
            [
                'name' => '🔢 Mã xác thực',
                'value' => "`{$code}`",
                'inline' => true,
            ],
            [
                'name' => '🔗 Link xác thực',
                'value' => "[Nhấn để xác thực]({$verificationLink})",
                'inline' => false,
            ],
        ];

        $embed = [
            'title' => '🎉 Thành viên mới đăng ký!',
            'description' => '**Có người dùng mới vừa tạo tài khoản**',
            'color' => self::COLOR_SUCCESS,
            'fields' => $fields,
            'thumbnail' => [
                'url' => 'https://cdn-icons-png.flaticon.com/512/1077/1077114.png'
            ],
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send customer recharge notification
     */
    public function SendCustomerRecharge($customer, $amount, $method = null)
    {
        $customerName = trim("{$customer->firstname} {$customer->lastname}");

        $fields = [
            [
                'name' => '👤 Khách hàng',
                'value' => $customerName ?: 'N/A',
                'inline' => true,
            ],
            [
                'name' => '📧 Email',
                'value' => isset($customer->email) ? $customer->email : 'N/A',
                'inline' => true,
            ],
            [
                'name' => '💰 Số tiền nạp',
                'value' => '**' . number_format($amount, 0, ',', '.') . ' VNĐ**',
                'inline' => true,
            ],
        ];

        if ($method) {
            $fields[] = [
                'name' => '💳 Phương thức',
                'value' => $method,
                'inline' => true,
            ];
        }

        $fields[] = [
            'name' => '🕒 Thời gian',
            'value' => Carbon::now()->format('d/m/Y H:i:s'),
            'inline' => true,
        ];

        $embed = [
            'title' => '💎 Khách hàng nạp tiền thành công',
            'description' => "**{$customerName}** vừa nạp tiền vào tài khoản",
            'color' => self::COLOR_VIP,
            'fields' => $fields,
            'thumbnail' => [
                'url' => 'https://cdn-icons-png.flaticon.com/512/3135/3135715.png'
            ],
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send job execution notification
     */
    public function SendJobRunInfo($jobName, $status, $additionalInfo = null, $duration = null)
    {
        $statusEmoji = match (strtolower($status)) {
            'success', 'completed' => '✅',
            'failed', 'error' => '❌',
            'running', 'processing' => '⏳',
            'warning' => '⚠️',
            default => '📊'
        };

        $color = match (strtolower($status)) {
            'success', 'completed' => self::COLOR_SUCCESS,
            'failed', 'error' => self::COLOR_ERROR,
            'warning' => self::COLOR_WARNING,
            default => self::COLOR_INFO
        };

        $fields = [
            [
                'name' => '⏱️ Thời gian chạy',
                'value' => Carbon::now()->format('d/m/Y H:i:s'),
                'inline' => true,
            ],
            [
                'name' => '📊 Trạng thái',
                'value' => "{$statusEmoji} {$status}",
                'inline' => true,
            ],
        ];

        if ($duration) {
            $fields[] = [
                'name' => '⏲️ Thời gian thực thi',
                'value' => $duration,
                'inline' => true,
            ];
        }

        if ($additionalInfo) {
            $info = is_string($additionalInfo) ? $additionalInfo : json_encode($additionalInfo, JSON_PRETTY_PRINT);
            $fields[] = [
                'name' => '📋 Thông tin chi tiết',
                'value' => "```\n" . substr($info, 0, 1000) . "\n```",
                'inline' => false,
            ];
        }

        $embed = [
            'title' => "⚙️ Job Execution: {$jobName}",
            'color' => $color,
            'fields' => $fields,
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send order paid notification with enhanced formatting
     */
    public function SendOrderPaidNotification($invoice)
    {
        $invoiceItem = $invoice->invoiceItem()->with([
            'vps',
            'hosting',
            'os.osGroup',
            'addons.addonItems'
        ])->first();

        if (!$invoiceItem) {
            return $this->SendErrorMessage('Không tìm thấy invoice item từ invoice ID: ' . $invoice->id, 'Order Paid Process');
        }

        $product = $invoiceItem->product;
        $os = $invoiceItem->os;
        $osGroup = isset($os->osGroup) ? $os->osGroup : null;
        $addons = $invoiceItem->addons;
        $customer = $invoice->customer;

        $fields = [
            [
                'name' => '🧾 Mã đơn hàng',
                'value' => "**#{$invoice->order_num}**",
                'inline' => true,
            ],
            [
                'name' => '📦 Sản phẩm',
                'value' => "#" . (isset($product->id) ? $product->id : '') . " - " . (isset($product->name) ? $product->name : ''),
                'inline' => true,
            ],
            [
                'name' => '💰 Tổng thanh toán',
                'value' => '**' . number_format($invoice->total, 0, ',', '.') . ' VNĐ**',
                'inline' => true,
            ],
            [
                'name' => '👤 Khách hàng',
                'value' => trim((isset($customer->firstname) ? $customer->firstname : '') . ' ' . (isset($customer->lastname) ? $customer->lastname : '')),
                'inline' => true,
            ],
            [
                'name' => '📧 Email',
                'value' => isset($customer->email) ? $customer->email : 'N/A',
                'inline' => true,
            ],
            [
                'name' => '🕒 Thời gian thanh toán',
                'value' => Carbon::parse($invoice->date_paid)->format('d/m/Y H:i:s'),
                'inline' => true,
            ],
        ];

        if ($osGroup || $os) {
            $fields[] = [
                'name' => '🖥️ Hệ điều hành',
                'value' => (isset($osGroup->name) ? $osGroup->name : '') . ' ' . (isset($os->version) ? $os->version : ''),
                'inline' => true,
            ];
        }

        // Add addons if exist
        if ($addons && $addons->count()) {
            $addonsText = "";
            foreach ($addons as $addon) {
                $addonsText .= "• {$addon->addonItems->name} (x{$addon->qty}) - " . number_format($addon->price, 0, ',', '.') . " VNĐ\n";
            }
            $fields[] = [
                'name' => '➕ Dịch vụ bổ sung',
                'value' => $addonsText,
                'inline' => false,
            ];
        }

        $embed = [
            'title' => '💵 Đơn hàng được thanh toán thành công!',
            'description' => "**Khách hàng:** " . (isset($customer->firstname) ? $customer->firstname : '') . " " . (isset($customer->lastname) ? $customer->lastname : '') . "\n**Đơn hàng:** #{$invoice->order_num}",
            'color' => self::COLOR_SUCCESS,
            'fields' => $fields,
            'thumbnail' => [
                'url' => 'https://cdn-icons-png.flaticon.com/512/3135/3135673.png'
            ],
            'footer' => [
                'text' => 'Order Management System'
            ],
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send service renewal notification
     */
    public function SendServiceRenewal($service, $period)
    {
        $fields = [
            [
                'name' => '🏷️ Dịch vụ',
                'value' => isset($service->name) ? $service->name : 'N/A',
                'inline' => true,
            ],
            [
                'name' => '📅 Gia hạn thêm',
                'value' => $period,
                'inline' => true,
            ],
            [
                'name' => '📅 Ngày hết hạn mới',
                'value' => Carbon::parse($service->next_due_date)->format('d/m/Y'),
                'inline' => true,
            ],
        ];

        $embed = [
            'title' => '🔄 Dịch vụ được gia hạn',
            'color' => self::COLOR_INFO,
            'fields' => $fields,
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }

    /**
     * Send system maintenance notification
     */
    public function SendMaintenanceNotification($title, $description, $startTime = null, $endTime = null)
    {
        $fields = [];

        if ($startTime) {
            $fields[] = [
                'name' => '🕐 Bắt đầu',
                'value' => Carbon::parse($startTime)->format('d/m/Y H:i:s'),
                'inline' => true,
            ];
        }

        if ($endTime) {
            $fields[] = [
                'name' => '🕑 Kết thúc dự kiến',
                'value' => Carbon::parse($endTime)->format('d/m/Y H:i:s'),
                'inline' => true,
            ];
        }

        $embed = [
            'title' => "🔧 {$title}",
            'description' => $description,
            'color' => self::COLOR_WARNING,
            'fields' => $fields,
            'timestamp' => now()->toIso8601String(),
        ];

        return $this->sendDiscordMessage(['embeds' => [$embed]]);
    }
}