fix: refactor asaas webhook for reliability and security

server.ts

@@ -1127,70 +1127,81 @@ app.post('/api/admin/reorder', authenticateToken, requireAdmin, (req: Authentica
 // --- ASAAS WEBHOOK HANDLER ---
 app.post('/api/webhooks/asaas', (req: Request, res: Response) => {
   const db = loadDb();
-  const configuredSecret = db.settings?.asaasWebhookSecret || process.env.ASAAS_WEBHOOK_TOKEN || 'devflix_webhook_secret_key';
+  const { event, payment } = req.body;
 
-  const tokenHeader = req.headers['asaas-token'] || req.headers['authorization'];
+  // 1. Logging Antecipado (para debuggar mesmo se der 401)
+  const logId = `wh_log_${Math.random().toString(36).substring(2, 9)}`;
+  if (event) {
+    db.webhookLogs.push({
+      id: logId,
+      event,
+      payload: JSON.stringify(req.body),
+      receivedAt: new Date().toISOString()
+    });
+    saveDb(db); // Salva o log imediatamente para não perdê-lo se der return early
+  }
+
+  // 2. Validação de Segurança
+  const configuredSecret = db.settings?.asaasWebhookSecret || process.env.ASAAS_WEBHOOK_TOKEN || 'devflix_webhook_secret_key';
+  // O Asaas usa asaas-access-token por padrão
+  const tokenHeader = req.headers['asaas-access-token'] || req.headers['asaas-token'] || req.headers['authorization'];
+  
   if (configuredSecret && tokenHeader !== configuredSecret) {
     console.warn(`[WEBHOOK SEGURANÇA] Token inválido bloqueado: ${tokenHeader}`);
     res.status(401).json({ error: 'Não autorizado - Token de Webhook do Asaas é inválido ou ausente.' });
     return;
   }
 
-  const { event, payment } = req.body;
-
   if (!event || !payment) {
     res.status(400).json({ error: 'Formato do Webhook inválido' });
     return;
   }
 
-  // Log the webhook event
+  // 3. Processamento do Pagamento
-  const logId = `wh_log_${Math.random().toString(36).substring(2, 9)}`;
-  db.webhookLogs.push({
-    id: logId,
-    event,
-    payload: JSON.stringify(req.body),
-    receivedAt: new Date().toISOString()
-  });
-
-  // Find user by Asaas Customer ID
   const customerId = payment.customer;
   const user = db.users.find(u => u.asaasCustomerId === customerId);
 
   if (user) {
-    // Process payment updates
+    // Busca APENAS pelo ID exato da fatura
-    let userPaymentIdx = db.payments.findIndex(p => p.id === payment.id || (p.userId === user.id && p.status === 'PENDING'));
+    let userPaymentIdx = db.payments.findIndex(p => p.id === payment.id);
+
+    const isPaid = event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED';
+    const isOverdue = event === 'PAYMENT_OVERDUE';
+    const isRefunded = event === 'PAYMENT_REFUNDED' || event === 'PAYMENT_DELETED';
+
+    const newStatus = isPaid ? 'CONFIRMED' :
+                      isOverdue ? 'OVERDUE' :
+                      isRefunded ? 'REFUNDED' : 
+                      event === 'PAYMENT_RESTORED' ? 'PENDING' : null;
 
-    // If we have a matching or pending payment, let's update or insert
     if (userPaymentIdx >= 0) {
-      db.payments[userPaymentIdx].status =
+      if (newStatus) {
-        event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED' ? 'CONFIRMED' :
+         db.payments[userPaymentIdx].status = newStatus as any;
-        event === 'PAYMENT_OVERDUE' ? 'OVERDUE' : 
+      }
-        event === 'PAYMENT_DELETED' ? 'DELETED' : db.payments[userPaymentIdx].status;
+      if (isPaid) {
-
-      if (event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED') {
         db.payments[userPaymentIdx].paidAt = new Date().toISOString();
       }
-    } else if (event !== 'PAYMENT_DELETED') {
+    } else if (!isRefunded) {
-      // Register a new payment log (unless it's a deletion of an unknown payment)
+      // Se não achou e não é estorno/deleção, registra a fatura enviada pelo Asaas
       db.payments.push({
-        id: payment.id || `pay_wh_${Math.random().toString(36).substring(2, 9)}`,
+        id: payment.id, // Usa o ID exato
         userId: user.id,
         value: payment.value || 49.90,
-        status: (event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED') ? 'CONFIRMED' :
+        status: (newStatus || 'PENDING') as any,
-                event === 'PAYMENT_OVERDUE' ? 'OVERDUE' : 'PENDING',
         billingType: payment.billingType || 'PIX',
         invoiceUrl: payment.invoiceUrl || `https://sandbox.asaas.com/i/${payment.id}`,
         dueDate: payment.dueDate || new Date().toISOString().split('T')[0],
-        paidAt: (event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED') ? new Date().toISOString() : null,
+        paidAt: isPaid ? new Date().toISOString() : null,
         createdAt: new Date().toISOString()
       });
     }
 
-    // Handle subscription access control
+    // 4. Lógica de Liberação de Acesso / Curso
-    if (event === 'PAYMENT_RECEIVED' || event === 'PAYMENT_CONFIRMED') {
+    const description = payment.description || '';
-      const description = payment.description || '';
+    const isCoursePayment = description.startsWith('unlock_course_');
-      
+
-      if (description.startsWith('unlock_course_')) {
+    if (isPaid) {
+      if (isCoursePayment) {
         const courseId = description.replace('unlock_course_', '');
         if (!user.unlockedCourses) user.unlockedCourses = [];
         if (!user.unlockedCourses.includes(courseId)) {
@@ -1198,16 +1209,16 @@ app.post('/api/webhooks/asaas', (req: Request, res: Response) => {
         }
         console.log(`Webhook: Curso ${courseId} LIBERADO para usuário ${user.email}`);
       } else {
-        // Liberar / manter acesso
         user.subscriptionStatus = 'ACTIVE';
-        console.log(`Webhook: Acesso LIBERADO para usuário ${user.email} (${user.name})`);
+        console.log(`Webhook: Assinatura LIBERADA para usuário ${user.email}`);
       }
-    } else if (event === 'PAYMENT_OVERDUE' || event === 'SUBSCRIPTION_DELETED') {
+    } else if (isOverdue || isRefunded || event === 'SUBSCRIPTION_DELETED') {
-      // Bloquear acesso automaticamente se for assinatura
+      if (!isCoursePayment) {
-      const description = payment.description || '';
+        // Bloqueia acesso da assinatura
-      if (!description.startsWith('unlock_course_')) {
+        user.subscriptionStatus = isOverdue ? 'OVERDUE' : 'CANCELED';
-        user.subscriptionStatus = event === 'PAYMENT_OVERDUE' ? 'OVERDUE' : 'CANCELED';
+        console.log(`Webhook: Assinatura BLOQUEADA para usuário ${user.email} - Motivo: ${event}`);
-        console.log(`Webhook: Acesso BLOQUEADO para usuário ${user.email} (${user.name}) - Motivo: ${event}`);
+      } else if (isRefunded) {
+         console.log(`Webhook: Pagamento de Curso REEMBOLSADO/DELETADO para usuário ${user.email}`);
       }
     }
   } else {