WIP: CW-665 Implement AirGapped Monero Transactions (#1535)

* replace qr scanner with fast_scanner

* bump java version

* fix qr code scanning

* add flashlight and camera switch

* airgap work

* commitTransactionUR

* bump fast_scanner, fix configure script

* add option to restore wallet from NERO qr format

* fixes to the flow and logic
use gsed or otherwise it fails?

* remove Expanded() to fix URQR on release builds

* cache key to allow app updates

* rename cache key

* [skip ci] cache key.jks in cache_dependencies

* update fast_scanner to work on ios, with light mlkit dependency

* ui fixes

* error handling fix

* update fast_scanner to drop iOS dependency

* changes from review

* Update lib/entities/qr_scanner.dart

* changes from review

* remove useless commit

* don't set state multiple times
remove return Container() for non monero wallets

* return on fail
don't handle empty qr codes

* set node as trusted
display primary address in seed screen

* fix wow and haven

* migrate node to trusted

* - update trusted node for existing users
- update locales
- fix conflicts
- move menu item

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

lib/view_model/animated_ur_model.dart

@@ -0,0 +1,10 @@
+import 'package:cake_wallet/store/app_store.dart';
+import 'package:cw_core/wallet_base.dart';
+import 'package:mobx/mobx.dart';
+
+class AnimatedURModel with Store {
+ AnimatedURModel(this.appStore)
+      : wallet = appStore.wallet!;
+  final AppStore appStore;
+  final WalletBase wallet;
+}

lib/view_model/dashboard/dashboard_view_model.dart

@@ -393,6 +393,12 @@ abstract class DashboardViewModelBase with Store {
       wallet.type == WalletType.wownero ||
       wallet.type == WalletType.haven;
 
+  @computed
+  bool get isMoneroViewOnly {
+    if (wallet.type != WalletType.monero) return false;
+    return monero!.isViewOnly();
+  }
+
   @computed
   String? get getMoneroError {
     if (wallet.type != WalletType.monero) return null;

lib/view_model/node_list/node_create_or_edit_view_model.dart

@@ -213,7 +213,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
       bool isCameraPermissionGranted =
           await PermissionHandler.checkPermission(Permission.camera, context);
       if (!isCameraPermissionGranted) return;
-      String code = await presentQRScanner();
+      String code = await presentQRScanner(context);
 
       if (code.isEmpty) {
         throw Exception('Unexpected scan QR code value: value is empty');

lib/view_model/restore/restore_wallet.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:cake_wallet/view_model/restore/restore_mode.dart';
 import 'package:cw_core/wallet_type.dart';
 
@@ -32,6 +34,16 @@ class RestoredWallet {
   final String? privateKey;
 
   factory RestoredWallet.fromKey(Map<String, dynamic> json) {
+    try {
+    final codeParsed = jsonDecode(json['raw_qr'].toString());
+      if (codeParsed["version"] == 0) {
+        json['address'] = codeParsed["primaryAddress"];
+        json['view_key'] = codeParsed["privateViewKey"];
+        json['height'] = codeParsed["restoreHeight"].toString();
+      }
+    } catch (e) {
+      // fine, we don't care, it is only for monero anyway
+    }
     final height = json['height'] as String?;
     return RestoredWallet(
       restoreMode: json['mode'] as WalletRestoreMode,
@@ -39,7 +51,7 @@ class RestoredWallet {
       address: json['address'] as String?,
       spendKey: json['spend_key'] as String?,
       viewKey: json['view_key'] as String?,
-      height: height != null ? int.parse(height) : 0,
+      height: height != null ? int.tryParse(height)??0 : 0,
       privateKey: json['private_key'] as String?,
     );
   }

lib/view_model/restore/wallet_restore_from_qr_code.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:cake_wallet/core/seed_validator.dart';
 import 'package:cake_wallet/entities/parse_address_from_domain.dart';
 import 'package:cake_wallet/entities/qr_scanner.dart';
@@ -48,6 +50,17 @@ class WalletRestoreFromQRCode {
 
     final extracted = sortedKeys.firstWhereOrNull((key) => code.toLowerCase().contains(key));
 
+    if (extracted == null) {
+      // Special case for view-only monero wallet
+      final codeParsed = json.decode(code);
+      if (codeParsed["version"] == 0 &&
+          codeParsed["primaryAddress"] != null &&
+          codeParsed["privateViewKey"] != null &&
+          codeParsed["restoreHeight"] != null) {
+        return WalletType.monero;
+      }
+    }
+
     return _walletTypeMap[extracted];
   }
 
@@ -75,7 +88,7 @@ class WalletRestoreFromQRCode {
   }
 
   static Future<RestoredWallet> scanQRCodeForRestoring(BuildContext context) async {
-    String code = await presentQRScanner();
+    String code = await presentQRScanner(context);
     if (code.isEmpty) throw Exception('Unexpected scan QR code value: value is empty');
 
     WalletType? walletType;
@@ -109,7 +122,7 @@ class WalletRestoreFromQRCode {
       queryParameters['address'] = _extractAddressFromUrl(code, walletType!);
     }
 
-    Map<String, dynamic> credentials = {'type': walletType, ...queryParameters};
+    Map<String, dynamic> credentials = {'type': walletType, ...queryParameters, 'raw_qr': code};
 
     credentials['mode'] = _determineWalletRestoreMode(credentials);
 
@@ -205,6 +218,17 @@ class WalletRestoreFromQRCode {
       return WalletRestoreMode.keys;
     }
 
+    if (type == WalletType.monero) {
+      final codeParsed = json.decode(credentials['raw_qr'].toString());
+      if (codeParsed["version"] != 0) throw UnimplementedError("Found view-only restore with unsupported version");
+      if (codeParsed["primaryAddress"] == null ||
+          codeParsed["privateViewKey"] == null ||
+          codeParsed["restoreHeight"] == null) {
+        throw UnimplementedError("Missing one or more attributes in the JSON");
+      }
+      return WalletRestoreMode.keys;
+    }
+
     throw Exception('Unexpected restore mode: restore params are invalid');
   }
 }

lib/view_model/send/send_view_model.dart

@@ -1,3 +1,4 @@
+import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/entities/contact.dart';
 import 'package:cake_wallet/entities/priority_for_wallet_type.dart';
 import 'package:cake_wallet/entities/transaction_description.dart';
@@ -10,7 +11,9 @@ import 'package:cake_wallet/entities/contact_record.dart';
 import 'package:cake_wallet/entities/wallet_contact.dart';
 import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/reactions/wallet_connect.dart';
+import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/solana/solana.dart';
+import 'package:cake_wallet/src/screens/ur/animated_ur_page.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/tron/tron.dart';
 import 'package:cake_wallet/view_model/contact_list/contact_list_view_model.dart';
@@ -23,6 +26,7 @@ import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/unspent_coin_type.dart';
 import 'package:cake_wallet/view_model/send/output.dart';
 import 'package:cake_wallet/view_model/send/send_template_view_model.dart';
+import 'package:flutter/material.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/entities/template.dart';
@@ -457,7 +461,7 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
   }
 
   @action
-  Future<void> commitTransaction() async {
+  Future<void> commitTransaction(BuildContext context) async {
     if (pendingTransaction == null) {
       throw Exception("Pending transaction doesn't exist. It should not be happened.");
     }
@@ -476,7 +480,17 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
 
     try {
       state = TransactionCommitting();
-      await pendingTransaction!.commit();
+      
+      if (pendingTransaction!.shouldCommitUR()) {
+        final urstr = await pendingTransaction!.commitUR();
+        final result = await Navigator.of(context).pushNamed(Routes.urqrAnimatedPage, arguments: urstr);
+        if (result == null) {
+          state = FailureState("Canceled by user");
+          return;
+        }
+      } else {
+        await pendingTransaction!.commit();
+      }
 
       if (walletType == WalletType.nano) {
         nano!.updateTransactions(wallet);

lib/view_model/wallet_keys_view_model.dart

@@ -72,6 +72,10 @@ abstract class WalletKeysViewModelBase with Store {
       final keys = monero!.getKeys(_appStore.wallet!);
 
       items.addAll([
+        if (keys['primaryAddress'] != null)
+          StandartListItem(
+              title: S.current.primary_address,
+              value: keys['primaryAddress']!),
         if (keys['publicSpendKey'] != null)
           StandartListItem(
             key: ValueKey('${_walletName}_wallet_public_spend_key_item_key'),
@@ -131,6 +135,10 @@ abstract class WalletKeysViewModelBase with Store {
       final keys = haven!.getKeys(_appStore.wallet!);
 
       items.addAll([
+        if (keys['primaryAddress'] != null)
+          StandartListItem(
+              title: S.current.primary_address,
+              value: keys['primaryAddress']!),
         if (keys['publicSpendKey'] != null)
           StandartListItem(
             key: ValueKey('${_walletName}_wallet_public_spend_key_item_key'),
@@ -168,6 +176,10 @@ abstract class WalletKeysViewModelBase with Store {
       final keys = wownero!.getKeys(_appStore.wallet!);
 
       items.addAll([
+        if (keys['primaryAddress'] != null)
+          StandartListItem(
+              title: S.current.primary_address,
+              value: keys['primaryAddress']!),
         if (keys['publicSpendKey'] != null)
           StandartListItem(
             key: ValueKey('${_walletName}_wallet_public_spend_key_item_key'),