Added user index for statistics

lib/api/mhsl/server/userIndex/update/updateUserindex.dart

@@ -0,0 +1,39 @@
+
+import 'dart:convert';
+
+import 'package:crypto/crypto.dart';
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
+import 'package:http/http.dart' as http;
+import 'package:marianum_mobile/api/mhsl/server/userIndex/update/updateUserIndexParams.dart';
+import 'package:package_info/package_info.dart';
+
+import '../../../../../model/accountData.dart';
+import '../../../mhslApi.dart';
+
+class UpdateUserIndex extends MhslApi<void> {
+  UpdateUserIndexParams params;
+  UpdateUserIndex(this.params) : super("server/userIndex/update");
+
+  @override
+  void assemble(String raw) {}
+
+  @override
+  Future<http.Response> request(Uri uri) {
+    return http.post(uri, body: jsonEncode(params.toJson()));
+  }
+
+  static void index() async {
+    String userId = sha512.convert(utf8.encode("${AccountData().getUsername()}:${AccountData().getPassword()}")).toString();
+    String deviceId = sha512.convert(utf8.encode("$userId@${FirebaseMessaging.instance.getToken()}")).toString();
+    UpdateUserIndex(
+      UpdateUserIndexParams(
+        username: AccountData().getUsername(),
+        user: userId,
+        device: deviceId,
+        appVersion: int.parse((await PackageInfo.fromPlatform()).buildNumber),
+        deviceInfo: jsonEncode((await DeviceInfoPlugin().deviceInfo).data).toString(),
+      ),
+    ).run();
+  }
+}