Bot: página /qr para vincular WhatsApp con QR escaneable

El QR de Baileys solo salía como ASCII en los logs (ilegible en Dokploy). Ahora
el WhatsappService empuja el QR al WebhookListener, que sirve GET /qr?key=
<FUNNEL_API_KEY> con el código como imagen (lib qrcode), autorrefresco y estado
"ya conectado". Añade dependencia qrcode.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Carlos Narro
2026-06-09 16:46:06 +02:00
parent 062a34c144
commit a43e7a77be
4 changed files with 246 additions and 19 deletions

View File

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@@ -8219,6 +8353,12 @@
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View File

@@ -26,6 +26,7 @@
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@@ -48,10 +49,16 @@
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}, },
"jest": { "jest": {
"moduleFileExtensions": ["js", "json", "ts"], "moduleFileExtensions": [
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],
"rootDir": "src", "rootDir": "src",
"testRegex": ".*\\.spec\\.ts$", "testRegex": ".*\\.spec\\.ts$",
"transform": { "^.+\\.(t|j)s$": "ts-jest" }, "transform": {
"^.+\\.(t|j)s$": "ts-jest"
},
"coverageDirectory": "../coverage", "coverageDirectory": "../coverage",
"testEnvironment": "node" "testEnvironment": "node"
} }

View File

@@ -1,12 +1,17 @@
import { Injectable, Logger, OnApplicationBootstrap } from '@nestjs/common'; import { Injectable, Logger, OnApplicationBootstrap } from '@nestjs/common';
import * as http from 'http'; import * as http from 'http';
import { ApiClient } from '../api/api-client.service'; import { ApiClient } from '../api/api-client.service';
const QRImage = require('qrcode');
@Injectable() @Injectable()
export class WebhookListener implements OnApplicationBootstrap { export class WebhookListener implements OnApplicationBootstrap {
private readonly logger = new Logger(WebhookListener.name); private readonly logger = new Logger(WebhookListener.name);
private server: http.Server | null = null; private server: http.Server | null = null;
// Estado de vinculación de WhatsApp, alimentado por WhatsappService (sin dependencia circular).
private qrActual: string | null = null;
private conectado = false;
constructor(private readonly api: ApiClient) {} constructor(private readonly api: ApiClient) {}
onApplicationBootstrap() { onApplicationBootstrap() {
@@ -16,10 +21,27 @@ export class WebhookListener implements OnApplicationBootstrap {
this.logger.log(`Webhook listener en puerto ${port}`); this.logger.log(`Webhook listener en puerto ${port}`);
this.logger.log(`WHATSAPP_START → POST /whatsapp-start`); this.logger.log(`WHATSAPP_START → POST /whatsapp-start`);
this.logger.log(`WHATSAPP_PDF → POST /whatsapp-pdf`); this.logger.log(`WHATSAPP_PDF → POST /whatsapp-pdf`);
this.logger.log(`QR vinculación → GET /qr?key=FUNNEL_API_KEY`);
}); });
} }
setQr(qr: string | null) {
this.qrActual = qr;
}
setConectado(b: boolean) {
this.conectado = b;
if (b) this.qrActual = null;
}
private async handleRequest(req: http.IncomingMessage, res: http.ServerResponse) { private async handleRequest(req: http.IncomingMessage, res: http.ServerResponse) {
const url = req.url || '';
if (req.method === 'GET') {
if (url.startsWith('/qr')) return this.handleQrPage(req, res);
res.writeHead(404).end('Not Found');
return;
}
if (req.method !== 'POST') { if (req.method !== 'POST') {
res.writeHead(405).end('Method Not Allowed'); res.writeHead(405).end('Method Not Allowed');
return; return;
@@ -36,7 +58,6 @@ export class WebhookListener implements OnApplicationBootstrap {
return; return;
} }
const url = req.url || '';
try { try {
if (url === '/whatsapp-start') { if (url === '/whatsapp-start') {
await this.handleWhatsappStart(payload); await this.handleWhatsappStart(payload);
@@ -54,6 +75,53 @@ export class WebhookListener implements OnApplicationBootstrap {
}); });
} }
// Página de vinculación: muestra el QR de Baileys como imagen escaneable. Protegida por ?key=.
private async handleQrPage(req: http.IncomingMessage, res: http.ServerResponse) {
const expected = process.env.FUNNEL_API_KEY || '';
let provided = '';
try {
provided = new URL(req.url || '', 'http://localhost').searchParams.get('key') || '';
} catch {
/* url malformada */
}
if (!expected || provided !== expected) {
res
.writeHead(401, { 'Content-Type': 'text/html; charset=utf-8' })
.end('<h2>401</h2><p>Añade ?key=&lt;FUNNEL_API_KEY&gt; a la URL.</p>');
return;
}
let cuerpo: string;
if (this.conectado) {
cuerpo = '<h2>✅ WhatsApp ya conectado</h2><p>El bot está vinculado. No hace falta escanear nada.</p>';
} else if (this.qrActual) {
let dataUrl = '';
try {
dataUrl = await QRImage.toDataURL(this.qrActual, { width: 320, margin: 2 });
} catch {
/* fallback abajo */
}
cuerpo =
'<h2>Vincula WhatsApp del negocio</h2>' +
'<p>WhatsApp → Dispositivos vinculados → Vincular un dispositivo → escanea:</p>' +
(dataUrl ? '<img src="' + dataUrl + '" width="320" height="320" alt="QR" />' : '<p>No se pudo generar el QR.</p>') +
'<p class="muted">El código rota cada pocos segundos; la página se refresca sola.</p>';
} else {
cuerpo = '<h2>Esperando QR…</h2><p class="muted">El bot aún no ha emitido el código. Refresca en unos segundos.</p>';
}
const html =
'<!doctype html><html lang="es"><head><meta charset="utf-8" />' +
'<meta name="viewport" content="width=device-width, initial-scale=1" />' +
'<meta http-equiv="refresh" content="12" />' +
'<title>Vincular WhatsApp · Reformix</title>' +
'<style>body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#0f1115;color:#e6e8ec;display:flex;min-height:100vh;align-items:center;justify-content:center;text-align:center;margin:0;padding:24px}img{background:#fff;padding:12px;border-radius:12px}h2{margin:0 0 8px}.muted{color:#9aa3b2;font-size:13px}p{color:#c8cdd6}</style>' +
'</head><body><div>' +
cuerpo +
'</div></body></html>';
res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8', 'Cache-Control': 'no-store' }).end(html);
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars // eslint-disable-next-line @typescript-eslint/no-unused-vars
private leadSessions = new Map<string, { leadId: string; telefono: string; nombre: string; jid: string | null }>(); private leadSessions = new Map<string, { leadId: string; telefono: string; nombre: string; jid: string | null }>();

View File

@@ -136,17 +136,20 @@ export class WhatsappService implements OnModuleInit, OnModuleDestroy {
if (qr) { if (qr) {
QRCode.generate(qr, { small: true }); QRCode.generate(qr, { small: true });
console.log('\n📲 Escanea este QR con WhatsApp\n'); console.log('\n📲 Escanea este QR con WhatsApp (o abre /qr?key=FUNNEL_API_KEY)\n');
this.webhookListener.setQr(qr);
} }
if (connection === 'close') { if (connection === 'close') {
const shouldReconnect = const shouldReconnect =
(lastDisconnect?.error as Boom)?.output?.statusCode !== DisconnectReason.loggedOut; (lastDisconnect?.error as Boom)?.output?.statusCode !== DisconnectReason.loggedOut;
this.logger.warn(`Conexion cerrada. Reconectar: ${shouldReconnect}.`); this.logger.warn(`Conexion cerrada. Reconectar: ${shouldReconnect}.`);
this.webhookListener.setConectado(false);
if (shouldReconnect) setTimeout(() => this.conectar(), 5000); if (shouldReconnect) setTimeout(() => this.conectar(), 5000);
else this.logger.error('Sesion cerrada (logged out).'); else this.logger.error('Sesion cerrada (logged out).');
} else if (connection === 'open') { } else if (connection === 'open') {
this.logger.log('✅ WhatsApp conectado. Luisa esta lista.'); this.logger.log('✅ WhatsApp conectado. Luisa esta lista.');
this.webhookListener.setConectado(true);
} }
}); });