Merge pull request #4 from cake-tech/add-new-nodes

Changed cake wallet remote nodes addresses and credentials

assets/node_list.yml

@@ -2,14 +2,10 @@
   uri: xmr-node-uk.cakewallet.com:18081
   is_default: true
 -
-  uri: eu-node.cakewallet.io:18081
-  login: cake
-  password: public_node
+  uri: xmr-node-eu.cakewallet.com:18081
   is_default: false
 -
-  uri: node.cakewallet.io:18081
-  login: cake
-  password: public_node
+  uri: xmr-node-usa-east.cakewallet.com:18081
   is_default: false
 -
   uri: node.moneroworld.com:18089

lib/main.dart

@@ -80,7 +80,8 @@ void main() async {
       sharedPreferences: sharedPreferences,
       walletListService: walletListService,
       nodes: nodes,
-      authStore: authenticationStore);
+      authStore: authenticationStore,
+      initialMigrationVersion: 2);
 
   final settingsStore = await SettingsStoreBase.load(
       nodes: nodes,

lib/src/domain/common/default_settings_migration.dart

@@ -19,6 +19,11 @@ Future defaultSettingsMigration(
     return;
   }
 
+  final migrationVersionsLength = version - currentVersion;
+  final migrationVersions = List<int>.generate(
+      migrationVersionsLength, (i) => currentVersion + (i + 1));
+
+  await Future.forEach(migrationVersions, (int version) async {
     try {
       switch (version) {
         case 1:
@@ -28,19 +33,90 @@ Future defaultSettingsMigration(
               'current_fee_priority', TransactionPriority.standart.raw);
           await sharedPreferences.setInt('current_balance_display_mode',
               BalanceDisplayMode.availableBalance.raw);
-        await sharedPreferences.setInt(
-            'current_default_settings_migration_version', 1);
           await sharedPreferences.setBool('save_recipient_address', false);
           await resetToDefault(nodes);
-        await sharedPreferences.setInt('current_node_id', 0);
+          await changeCurrentNodeToDefault(
+              sharedPreferences: sharedPreferences, nodes: nodes);
+
+          break;
+        case 2:
+          await replaceNodesMigration(nodes: nodes);
+          await replaceDefaultNode(
+              sharedPreferences: sharedPreferences, nodes: nodes);
+
           break;
         default:
           break;
       }
+
+      await sharedPreferences.setInt(
+          'current_default_settings_migration_version', version);
     } catch (e) {
       print('Migration error: ${e.toString()}');
     }
+  });
 
   await sharedPreferences.setInt(
       'current_default_settings_migration_version', version);
 }
+
+Future<void> replaceNodesMigration({@required Box<Node> nodes}) async {
+  final replaceNodes = <String, Node>{
+    'eu-node.cakewallet.io:18081':
+        Node(uri: 'xmr-node-eu.cakewallet.com:18081'),
+    'node.cakewallet.io:18081':
+        Node(uri: 'xmr-node-usa-east.cakewallet.com:18081')
+  };
+
+  nodes.values.forEach((Node node) async {
+    final nodeToReplace = replaceNodes[node.uri];
+
+    if (nodeToReplace != null) {
+      node.uri = nodeToReplace.uri;
+      node.login = nodeToReplace.login;
+      node.password = nodeToReplace.password;
+      await node.save();
+    }
+  });
+}
+
+Future<void> changeCurrentNodeToDefault(
+    {@required SharedPreferences sharedPreferences,
+    @required Box<Node> nodes}) async {
+  final timeZone = DateTime.now().timeZoneOffset.inHours;
+  String nodeUri = '';
+
+  if (timeZone >= 1) { // Eurasia
+    nodeUri = 'xmr-node-eu.cakewallet.com:18081';
+  } else if (timeZone <= -4) { // America
+    nodeUri = 'xmr-node-usa-east.cakewallet.com:18081';
+  }
+
+  final node = nodes.values.firstWhere((Node node) => node.uri == nodeUri) ??
+      nodes.values.first;
+  final nodeId = node != null ? node.key as int : 0; // 0 - England
+
+  await sharedPreferences.setInt('current_node_id', nodeId);
+}
+
+Future<void> replaceDefaultNode(
+    {@required SharedPreferences sharedPreferences,
+    @required Box<Node> nodes}) async {
+  const nodesForReplace = <String>[
+    'xmr-node-uk.cakewallet.com:18081',
+    'eu-node.cakewallet.io:18081',
+    'node.cakewallet.io:18081'
+  ];
+  final currentNodeId = sharedPreferences.getInt('current_node_id');
+  final currentNode =
+      nodes.values.firstWhere((Node node) => node.key == currentNodeId);
+  final needToReplace =
+      currentNode == null ? true : nodesForReplace.contains(currentNode.uri);
+
+  if (!needToReplace) {
+    return;
+  }
+
+  await changeCurrentNodeToDefault(
+      sharedPreferences: sharedPreferences, nodes: nodes);
+}

lib/src/domain/common/node_list.dart

@@ -5,9 +5,15 @@ import 'package:cake_wallet/src/domain/common/node.dart';
 
 Future<List<Node>> loadDefaultNodes() async {
   final nodesRaw = await rootBundle.loadString('assets/node_list.yml');
-  final nodes = loadYaml(nodesRaw) as List<Map<dynamic, dynamic>>;
+  final nodes = loadYaml(nodesRaw) as YamlList;
 
-  return nodes.map((raw) => Node.fromMap(raw)).toList();
+  return nodes.map((dynamic raw) {
+    if (raw is Map) {
+      return Node.fromMap(raw);
+    }
+
+    return null;
+  }).toList();
 }
 
 Future resetToDefault(Box<Node> nodeSource) async {