first upload all files

Modules/Import/Http/Controllers/Admin/DownloadCsvController.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Modules\Import\Http\Controllers\Admin;
+
+class DownloadCsvController
+{
+    /**
+     * Display a listing of the resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function index()
+    {
+        $import_types = ['product' => 'products.csv'];
+
+        if (array_key_exists(request('import_type'), $import_types)) {
+            $path = storage_path('app/csv_templates/' . $import_types[request('import_type')]);
+
+            return response()->download($path);
+        }
+    }
+}