feat: Adicionado timeout assíncrono para ACK do Cliente Windows

dental-server/routes/images.js

@@ -2,10 +2,44 @@ const express = require('express');
 const router = express.Router();
 const db = require('../database');
 const imageProcessor = require('../image-processor');
+const crypto = require('crypto');
 const path = require('path');
 const fs = require('fs').promises;
 const storage = require('../storage');
 
+async function emitAndAwaitAck(io, action, payload) {
+  if (!io) return { success: true, warning: 'Socket.IO não inicializado no servidor.' };
+  
+  const eventId = crypto.randomUUID();
+  payload.eventId = eventId;
+  payload.action = action;
+  
+  const ackPromise = new Promise((resolve) => {
+    if (global.pendingAcks) {
+      global.pendingAcks.set(eventId, resolve);
+      setTimeout(() => {
+        if (global.pendingAcks.has(eventId)) {
+          global.pendingAcks.delete(eventId);
+          resolve(null); // Timeout
+        }
+      }, 4000);
+    } else {
+      resolve(null);
+    }
+  });
+
+  io.emit('remote-crud-patient', payload);
+  
+  const result = await ackPromise;
+  if (result && result.success) {
+    return { success: true, message: `Sincronizado com PC: ${result.pcName || 'Desconhecido'}`, ackInfo: result };
+  } else if (result && !result.success) {
+    return { success: true, warning: `Erro no app Windows (${result.pcName || 'Desconhecido'}): ${result.error || 'Erro local'}` };
+  } else {
+    return { success: true, warning: 'Salvo na nuvem, porém o App Windows não respondeu. Verifique se o PC está ligado e conectado.' };
+  }
+}
+
 // ================================================================
 // GET /api/images/unique-clients - Buscar lista leve de clínicas
 // ================================================================
@@ -217,7 +251,6 @@ router.post('/patients', async (req, res) => {
     const fullName = `${firstName || ''} ${lastName || ''}`.trim();
     if (!fullName) return res.status(400).json({ error: 'Nome obrigatório' });
 
-    const crypto = require('crypto');
     const dummyGuid = crypto.randomUUID();
 
     await db.run(
@@ -235,14 +268,11 @@ router.post('/patients', async (req, res) => {
     );
 
     const io = req.app.get('io') || global.io;
-    if (io) {
-      io.emit('remote-crud-patient', { 
-        action: 'create', 
-        patient: { id: dummyGuid, firstName, lastName, doctor, birthday, gender, phone, remark, fullName }
-      });
-    }
+    const syncResult = await emitAndAwaitAck(io, 'create', {
+      patient: { id: dummyGuid, firstName, lastName, doctor, birthday, gender, phone, remark, fullName }
+    });
 
-    res.json({ success: true, message: 'Paciente criado com sucesso' });
+    res.json(syncResult);
   } catch (error) {
     console.error('Erro ao criar paciente:', error);
     res.status(500).json({ error: error.message });
@@ -286,15 +316,12 @@ router.put('/patients/:name', async (req, res) => {
     );
 
     const io = req.app.get('io') || global.io;
-    if (io) {
-      io.emit('remote-crud-patient', { 
-        action: 'update', 
-        oldName: oldName,
-        patient: { newName: newName?.trim(), doctor, remark }
-      });
-    }
-
-    res.json({ success: true, updated: result.changes });
+    const syncResult = await emitAndAwaitAck(io, 'update', {
+      oldName: oldName,
+      patient: { newName: newName?.trim(), doctor, remark }
+    });
+    
+    res.json({ ...syncResult, updated: result.changes });
   } catch (error) {
     console.error('Erro ao editar paciente:', error);
     res.status(500).json({ error: error.message });
@@ -318,11 +345,9 @@ router.delete('/by-patient', async (req, res) => {
     await db.run('DELETE FROM images WHERE patient_name = $1', [patientName]);
 
     const io = req.app.get('io') || global.io;
-    if (io) {
-      io.emit('remote-crud-patient', { action: 'delete', patientName });
-    }
+    const syncResult = await emitAndAwaitAck(io, 'delete', { patientName });
 
-    res.json({ success: true, count: images.length });
+    res.json({ ...syncResult, count: images.length });
   } catch (error) {
     console.error('Erro ao excluir imagens do paciente:', error);
     res.status(500).json({ error: error.message });