<?php

namespace App\Http\Controllers;

use App\Models\TelegramAccount;
use App\Models\User;
use App\Services\TelegramBotService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;

class TelegramController extends Controller
{
    /**
     * Mostrar página de vinculación de Telegram
     */
    public function showVerifyPage()
    {
        $user = Auth::user();
        
        // Obtener o crear cuenta de Telegram
        $telegramAccount = $user->telegramAccount()->first();
        
        if (!$telegramAccount) {
            // Generar nuevo código de verificación
            $verificationCode = TelegramBotService::generateVerificationCode();
            
            $telegramAccount = TelegramAccount::create([
                'user_id' => $user->id,
                'chat_id' => null,
                'verification_code' => $verificationCode,
                'is_verified' => false,
            ]);
        } elseif (!$telegramAccount->is_verified && !$telegramAccount->verification_code) {
            // Regenerar código si no existe
            $verificationCode = TelegramBotService::generateVerificationCode();
            $telegramAccount->update(['verification_code' => $verificationCode]);
        }

        return view('telegram.verify', compact('telegramAccount'));
    }

    /**
     * Regenerar código de verificación
     */
    public function regenerateCode(Request $request)
    {
        $user = Auth::user();
        
        $telegramAccount = $user->telegramAccount;
        
        if (!$telegramAccount) {
            return back()->with('error', 'No tienes una cuenta de Telegram vinculada.');
        }
        
        if ($telegramAccount->is_verified) {
            return back()->with('error', 'Tu cuenta ya está verificada.');
        }

        $verificationCode = TelegramBotService::generateVerificationCode();
        $telegramAccount->update(['verification_code' => $verificationCode]);

        return back()->with('success', 'Nuevo código de verificación generado.');
    }

    /**
     * desvincular cuenta de Telegram
     */
    public function unlink(Request $request)
    {
        $user = Auth::user();
        
        $telegramAccount = $user->telegramAccount;
        
        if ($telegramAccount) {
            $telegramAccount->delete();
            
            // Crear nueva cuenta sin verificar
            TelegramAccount::create([
                'user_id' => $user->id,
                'chat_id' => null,
                'verification_code' => TelegramBotService::generateVerificationCode(),
                'is_verified' => false,
            ]);
        }

        return back()->with('success', 'Cuenta de Telegram desvinculada.');
    }

    /**
     * Webhook para recibir mensajes de Telegram
     */
    public function webhook(Request $request)
    {
        try {
            $update = $request->all();
            
            Log::info('Telegram webhook received', $update);
            
            if (empty($update)) {
                return response()->json(['ok' => true, 'message' => 'No update 
received']);
            }

            $botService = new TelegramBotService();
            $result = $botService->handleUpdate($update);
            
            return response()->json($result);
        } catch (\Exception $e) {
            Log::error('Telegram webhook error', [
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);
            
            return response()->json(['ok' => false, 'error' => $e->getMessage()], 500);
        }
    }

    /**
     * Configurar webhook (ruta temporal para configurar desde el navegador)
     */
    public function setupWebhook(Request $request)
    {
        $token = $request->get('token');
        
        // Verificar token de seguridad simple
        if ($token !== config('app.key')) {
            abort(403, 'Token inválido');
        }

        $botService = new TelegramBotService();
        $result = $botService->setWebhook();

        if ($result) {
            return response()->json(['success' => true, 'message' => 'Webhook configurado correctamente']);
        }

        return response()->json(['success' => false, 'error' => 'Error al configurar webhook'], 500);
    }
}