add sample.csv download

app.py

@@ -93,6 +93,10 @@ def upload_csv():
     return "File uploaded successfully", 200
     
 
+@app.route('/download_sample_csv')
+def download_sample_csv():
+    return send_file('resource/sample.csv', as_attachment=True)
+
 if __name__ == '__main__':
     # 當在生產環境部署時，不建議使用 debug=True
     # 可以指定 host='0.0.0.0' 讓外部可訪問 (在防火牆允許的情況下)

templates/index.html

@@ -15,6 +15,9 @@
     <div id="downloadLink" style="display: none;">
         <a id="downloadAnchor" href="#" download="generated_image.png">點擊下載圖片</a>
     </div>
+    <div>
+        <a href="/download_sample_csv" id="sampleCsvLink" download="sample.csv">下載範例 CSV 檔</a>
+    </div>
 
     <script>
         document.getElementById('uploadForm').addEventListener('submit', async function(event) {