Merge branch 'flutter-upgrade' of https://github.com/cake-tech/cake_wallet into CW-182-allow-trusted-nodes

 Conflicts:

	cw_core/lib/node.dart

	lib/view_model/node_list/node_create_or_edit_view_model.dart

cw_core/lib/node.dart

@@ -1,7 +1,5 @@
 import 'dart:io';
-
 import 'package:cw_core/keyable.dart';
-import 'package:flutter/foundation.dart';
 import 'dart:convert';
 import 'package:http/http.dart' as http;
 import 'package:hive/hive.dart';
@@ -11,46 +9,49 @@ import 'package:http/io_client.dart' as ioc;
 part 'node.g.dart';
 
 Uri createUriFromElectrumAddress(String address) =>
-    Uri.tryParse('tcp://$address');
+    Uri.tryParse('tcp://$address')!;
 
 @HiveType(typeId: Node.typeId)
 class Node extends HiveObject with Keyable {
   Node(
-      {@required String uri,
-      @required WalletType type,
-      this.login,
+      {this.login,
       this.password,
       this.useSSL,
-      this.trusted}) {
-    uriRaw = uri;
-    this.type = type;
+      this.trusted = false,
+      String? uri,
+      WalletType? type,}) {
+    if (uri != null) {
+      uriRaw = uri;
+    }
+    if (type != null) {
+      this.type = type;
+    }
   }
 
-  Node.fromMap(Map map)
-      : uriRaw = map['uri'] as String ?? '',
-        login = map['login'] as String,
-        password = map['password'] as String,
-        typeRaw = map['typeRaw'] as int,
-        useSSL = map['useSSL'] as bool,
-        trusted = map['trusted'] as bool ?? false;
+  Node.fromMap(Map<String, Object?> map)
+      : uriRaw = map['uri'] as String? ?? '',
+        login = map['login'] as String?,
+        password = map['password'] as String?,
+        useSSL = map['useSSL'] as bool?,
+        trusted = map['trusted'] as bool? ?? false;
 
   static const typeId = 1;
   static const boxName = 'Nodes';
 
   @HiveField(0)
-  String uriRaw;
+  late String uriRaw;
 
   @HiveField(1)
-  String login;
+  String? login;
 
   @HiveField(2)
-  String password;
+  String? password;
 
   @HiveField(3)
-  int typeRaw;
+  late int typeRaw;
 
   @HiveField(4)
-  bool useSSL;
+  bool? useSSL;
 
   @HiveField(5)
   bool trusted;
@@ -68,7 +69,7 @@ class Node extends HiveObject with Keyable {
       case WalletType.haven:
         return Uri.http(uriRaw, '');
       default:
-        return null;
+        throw Exception('Unexpected type ${type.toString()} for Node uri');
     }
   }
 
@@ -104,33 +105,32 @@ class Node extends HiveObject with Keyable {
   }
 
   Future<bool> requestMoneroNode() async {
-  
     final path = '/json_rpc';
     final rpcUri = isSSL ? Uri.https(uri.authority, path) : Uri.http(uri.authority, path);
     final realm = 'monero-rpc';
     final body = {
-        'jsonrpc': '2.0', 
-        'id': '0', 
+        'jsonrpc': '2.0',
+        'id': '0',
         'method': 'get_info'
     };
 
     try {
       final authenticatingClient = HttpClient();
-    
+
       authenticatingClient.addCredentials(
           rpcUri,
-          realm, 
+          realm,
           HttpClientDigestCredentials(login ?? '', password ?? ''),
       );
-    
+
       final http.Client client = ioc.IOClient(authenticatingClient);
-    
+
       final response = await client.post(
           rpcUri,
           headers: {'Content-Type': 'application/json'},
           body: json.encode(body),
       );
-    
+
       client.close();
 
       final resBody = json.decode(response.body) as Map<String, dynamic>;