fix: lazy-load Wasabi URLs to prevent socket.io timeout — check local files first, generate signed URLs on-demand

dental-server/routes/images.js

@@ -159,19 +159,9 @@ router.get('/patients', async (req, res) => {
       params
     );
 
-    // Converter thumb_filename para URL completa (Wasabi ou local)
+    // Lazy-load URLs para thumbnails (carrega em paralelo quando o frontend chamar)
     for (const row of rows) {
-      if (row.thumb_filename) {
-        try {
-          const thumbUrl = await storage.getImageUrl(row.thumb_filename, row.client_name, row.patient_name);
-          row.thumb_url = thumbUrl || `/uploads/${row.thumb_filename}`;
-        } catch (e) {
-          console.error('Erro ao gerar URL de thumbnail:', e);
-          row.thumb_url = `/uploads/${row.thumb_filename}`;
-        }
-      } else {
-        row.thumb_url = '';
-      }
+      row.thumb_url = row.thumb_filename ? `/api/images/${row.id}/thumbnail` : '';
     }
 
     res.json(rows);
@@ -201,22 +191,10 @@ router.get('/by-patient', async (req, res) => {
       [patientName, showDisabled ? 0 : 1]
     );
 
-    // Converter filenames para URLs completas (Wasabi ou local)
+    // Adicionar lazy-load URLs (não fazer requisições async aqui)
     for (const image of images) {
-      try {
-        if (image.filename) {
-          const fileUrl = await storage.getImageUrl(image.filename, image.client_name, image.patient_name);
-          image.file_url = fileUrl || `/uploads/${image.filename}`;
-        }
-        if (image.thumb_filename) {
-          const thumbUrl = await storage.getImageUrl(image.thumb_filename, image.client_name, image.patient_name);
-          image.thumb_url = thumbUrl || `/uploads/${image.thumb_filename}`;
-        }
-      } catch (e) {
-        console.error('Erro ao gerar URL para imagem:', e);
-        image.file_url = image.file_url || `/uploads/${image.filename}`;
-        image.thumb_url = image.thumb_url || `/uploads/${image.thumb_filename}`;
-      }
+      image.file_url = `/api/images/${image.id}/file-url`;
+      image.thumb_url = `/api/images/${image.id}/thumbnail`;
     }
 
     res.json(images);
@@ -489,6 +467,41 @@ router.delete('/:id', async (req, res) => {
   }
 });
 
+// ================================================================
+// GET /api/images/:id/thumbnail — Retorna URL da thumbnail
+// (lazy-loaded para não bloquear listagens)
+// ================================================================
+router.get('/:id/thumbnail', async (req, res) => {
+  try {
+    const image = await db.get('SELECT thumb_filename, filename, client_name, patient_name FROM images WHERE id = $1', [req.params.id]);
+    if (!image) return res.status(404).json({ error: 'Imagem não encontrada' });
+
+    const fileToCheck = image.thumb_filename || image.filename;
+    let url;
+
+    // Tenta URL local primeiro (mais rápido)
+    const fsSync = require('fs');
+    const path = require('path');
+    const localPath = path.join(process.env.UPLOAD_DIR || '/app/uploads', fileToCheck);
+
+    if (fsSync.existsSync(localPath)) {
+      url = `/uploads/${fileToCheck}`;
+    } else {
+      // Se não existe localmente, tenta Wasabi
+      try {
+        const wasabiUrl = await storage.getImageUrl(fileToCheck, image.client_name, image.patient_name, false);
+        url = wasabiUrl || `/uploads/${fileToCheck}`;
+      } catch (e) {
+        console.error('Erro ao gerar URL Wasabi para thumbnail:', e);
+        url = `/uploads/${fileToCheck}`;
+      }
+    }
+    res.json({ url });
+  } catch (e) {
+    res.status(500).json({ error: e.message });
+  }
+});
+
 // ================================================================
 // GET /api/images/:id/file-url — Retorna a URL de visualização
 // full-res de uma imagem (para o painel Original do modal)