FEAT: Adiciona botão de download para o modelo do CSV.

app.js

@@ -422,7 +422,14 @@ app.get("/", (req, res) => {
     return res.json({ jobId });
   });
 
-  // download endpoint
+  // download model endpoint
+   app.get("/download-model", (req, res) => {
+    const modelPath = path.join(__dirname, "models", "modelo.viabilidade.csv");
+    if (!fs.existsSync(modelPath)) return res.status(404).send("Modelo não encontrado");
+    return res.download(modelPath, "modelo.viabilidade.csv");
+  });
+
+  // download result endpoint
   app.get("/download/:name", (req, res) => {
     const name = req.params.name;
     const p = path.join(__dirname, "outputs", name);

models/modelo.viabilidade.csv

@@ -0,0 +1 @@
+CEP;Numero

public/index.html

@@ -44,6 +44,7 @@
               <input class="form-control" type="file" id="csvfile" accept=".csv" required />
             </div>
             <button class="btn btn-primary" type="submit">Enviar CSV</button>
+            <button type="button" class="btn btn-primary" id="card__button-download">Baixar Modelo</button>
           </form>
           <div id="uploadResult" class="mt-3"></div>
           <div class="progress mt-2" style="height:24px; display:none;" id="progressWrap">

public/main.js

@@ -67,3 +67,12 @@ document.getElementById('btnConsultaCep').addEventListener('click', async () =>
     el.innerText = 'Erro na consulta';
   }
 });
+
+// baixar modelo
+const modelBtn = document.getElementById('card__button-download');
+if (modelBtn) {
+  modelBtn.addEventListener('click', (e) => {
+    // inicia download do endpoint que serve o modelo
+    window.location.href = '/download-model';
+  });
+}

public/style.css

@@ -37,6 +37,13 @@ button:hover {
     background-color: #298897 !important;
 }
 
+#card__button-download {
+    background-color: transparent !important;
+    border: 1px solid #31a3b5 !important;
+    color: #31a3b5 !important;
+    margin-left: 10px;
+}
+
 .progress-bar {
     background-color: #31a3b5 !important;
 }