add disk page

app/lib/api/request.dart

@@ -0,0 +1,12 @@
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:http/http.dart' as http;
+
+Future<Map<String, dynamic>> getJson(String uri) async {
+  if (!kIsWeb) {
+    uri = "http://127.0.0.1:8000$uri";
+  }
+  final resp = await http.get(Uri.parse(uri));
+  return jsonDecode(resp.body);
+}