From 59586cdadd94c24b026042b690215b8862cadf8b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 5 May 2025 22:43:43 -0700
Subject: [PATCH] Preference migrate and init

---
 lib/main.dart        |  5 +++-
 lib/preferences.dart | 68 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 1 deletion(-)
 create mode 100644 lib/preferences.dart

diff --git a/lib/main.dart b/lib/main.dart
index 44a01d8..300c450 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -2,8 +2,11 @@ import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 
 import 'main_screen.dart';
+import 'preferences.dart';
 
-void main() {
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  await Preferences.init();
   runApp(const MainApp());
 }
 
diff --git a/lib/preferences.dart b/lib/preferences.dart
new file mode 100644
index 0000000..8d3271f
--- /dev/null
+++ b/lib/preferences.dart
@@ -0,0 +1,68 @@
+
+import 'dart:io';
+import 'dart:math';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+class Preferences {
+  static const String id = 'id';
+  static const String url = 'url';
+  static const String accuracy = 'accuracy';
+  static const String interval = 'interval';
+  static const String distance = 'distance';
+  static const String buffer = 'buffer';
+
+  static Future<void> init() async {
+    SharedPreferences preferences = await SharedPreferences.getInstance();
+    if (Platform.isIOS) {
+      await _migrate(preferences);
+    }
+    await preferences.setString(id, preferences.getString(id) ?? (Random().nextInt(900000) + 100000).toString());
+    await preferences.setString(url, preferences.getString(url) ?? 'http://demo.traccar.org:5055');
+    await preferences.setString(accuracy, preferences.getString(accuracy) ?? 'medium');
+    await preferences.setInt(interval, preferences.getInt(interval) ?? 300);
+    await preferences.setInt(distance, preferences.getInt(distance) ?? 0);
+    await preferences.setBool(buffer, preferences.getBool(buffer) ?? true);
+  }
+
+  static Future<void> _migrate(SharedPreferences preferences) async {
+    final oldId = preferences.getString('device_id_preference');
+    if (oldId != null) {
+      preferences.setString(id, oldId);
+      preferences.remove('device_id_preference');
+    }
+    final oldUrl = preferences.getString('server_url_preference');
+    if (oldUrl != null) {
+      preferences.setString(url, oldUrl);
+      preferences.remove('server_url_preference');
+    }
+    final oldAccuracy = preferences.getString('accuracy_preference');
+    if (oldAccuracy != null) {
+      preferences.setString(accuracy, oldAccuracy);
+      preferences.remove('accuracy_preference');
+    }
+    final oldIntervalString = preferences.getString('frequency_preference');
+    final oldInterval = oldIntervalString != null ? int.tryParse(oldIntervalString) : null;
+    if (oldInterval != null) {
+      preferences.setInt(interval, oldInterval);
+      preferences.remove('frequency_preference');
+    }
+    final oldDistanceString = preferences.getString('distance_preference');
+    final oldDistance = oldDistanceString != null ? int.tryParse(oldDistanceString) : null;
+    if (oldDistance != null) {
+      preferences.setInt(distance, oldDistance);
+      preferences.remove('distance_preference');
+    }
+    final oldAngleString = preferences.getString('angle_preference');
+    final oldAngle = oldAngleString != null ? int.tryParse(oldAngleString) : null;
+    if (oldAngle != null) {
+      preferences.setInt('angle', oldAngle);
+      preferences.remove('angle_preference');
+    }
+    final oldBuffer = preferences.getBool('buffer_preference');
+    if (oldBuffer != null) {
+      preferences.setBool(buffer, oldBuffer);
+      preferences.remove('buffer_preference');
+    }
+  }
+}