Cw 78 ethereum (#862)

* Add initial flow for ethereum

* Add initial create Eth wallet flow

* Complete Ethereum wallet creation flow

* Fix web3dart versioning issue

* Add primary receive address extracted from private key

* Implement open wallet functionality

* Implement restore wallet from seed functionality

* Fixate web3dart version as higher versions cause some issues

* Add Initial Transaction priorities for eth
Add estimated gas price

* Rename priority value to tip

* Re-order wallet types

* Change ethereum node
Fix connection issues

* Fix estimating gas for priority

* Add case for ethereum to fetch it's seeds

* Add case for ethereum to request node

* Fix Exchange screen initial pairs

* Add initial send transaction flow

* Add missing configure for ethereum class

* Add Eth address initial setup

* Fix Private key for Ethereum wallets

* Change sign/send transaction flow

* - Fix Conflicts with main
- Remove unused function from Haven configure.dart

* Add build command for ethereum package

* Add missing Node list file to pubspec

* - Fix balance display
- Fix parsing of Ethereum amount
- Add more Ethereum Nodes 

* - Fix extracting Ethereum Private key from seeds
- Integrate signing/sending transaction with the send view model

* - Update and Fix Conflicts with main

* Add Balances for ERC20 tokens

* Fix conflicts with main

* Add erc20 abi json

* Add send erc20 tokens initial function

* add missing getHeightByDate in Haven

* Allow contacts and wallets from the same tag

* Add Shiba Inu icon

* Add send ERC-20 tokens initial flow

* Add missing import in generated file

* Add initial approach for transaction sending for ERC-20 tokens

* Refactor signing/sending transactions

* Add initial flow for transactions subscription

* Refactor signing/sending transactions

* Add home settings icon

* Fix conflicts with main

* Initial flow for home settings

* Add logic flow for adding erc20 tokens

* Fix initial UI

* Finalize UI for Tokens

* Integrate UI with Ethereum flow

* Add "Enable/Disable" feature for ERC20 tokens

* Add initial Erc20 tokens

* Add Sorting and Pin Native Token features

* Fix price sorting

* Sort tokens list as well when Sort criteria changes

* - Improve sorting balances flow
- Add initial add token from search bar flow

* Fix Accounts Popup UI

* Fix Pin native token

* Fix Enabling/Disabling tokens
Fix sorting by fiat once app is opened
Improve token availability mechanism

* Fix deleting token
Fix renaming tokens

* Fix issue with search

* Add more tokens

* - Fix scroll issue
- Add ERC20 tokens placeholder image in picker

* - Separate and organize default erc20 tokens
- Fix scrolling
- Add token placeholder images in picker
- Sort disabled tokens alphabetically

* Change BNB token initial availability

* Fix Conflicts with main

* Fix Conflicts with main

* Add Verse ERC20 token to the initial tokens list

* Add rename wallet to Ethereum

* Integrate EtherScan API for fetching address transactions
Generate Ethereum specific secrets in Ethereum package

* Adjust transactions fiat price for ERC20 tokens

* Free Up GitHub Actions Ubuntu Runner Disk Space

* Free Up GitHub Actions Ubuntu Runner Disk space (trial 2)

* Fix Transaction Fee display

* Save transaction history

* Enhance loading time for erc20 tokens transactions

* Minor Fixes and Enhancements

* Fix sending erc20
fix block explorer issue

* Fix int overflow

* Fix transaction amount conversions

* Minor: `slow` -> `Slow` 

* Update build guide

* Fix fetching fiat rate taking a lot of time by only fetching enabled tokens only and making the API calls in parallel not sequential

* Update transactions on a periodic basis

* For fee, use ETH spot price, not ERC-20 spot price

* Add Etherscan History privacy option to enable/disable Etherscan API

* Show estimated fee amounts in the send screen

* fix send fiat fields parsing issue

* Fix transactions estimated fee less than actual fee

* handle balance sorting when balance is disabled
Handle empty transactions list

* Fix Delete Ethereum wallet
Fix balance < 0.01

* Fix Decimal place for Ethereum amount
Fix sending amount issue

* Change words count

* Remove balance hint and Full balance row from Ethereum wallets

* support changing the asset type in send templates

* Fix Templates for ERC tokens issues

* Fix conflicts in send templates

* Disable batch sending in Ethereum

* Fix Fee calculation with different priorities

* Fix Conflicts with main

* Add offline error to ignored exceptions

---------

Co-authored-by: Justin Ehrenhofer <justin.ehrenhofer@gmail.com>

lib/view_model/send/output.dart

@@ -2,6 +2,7 @@ import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/entities/calculate_fiat_amount_raw.dart';
 import 'package:cake_wallet/entities/parse_address_from_domain.dart';
 import 'package:cake_wallet/entities/parsed_address.dart';
+import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/haven/haven.dart';
 import 'package:cake_wallet/src/screens/send/widgets/extract_address_from_parsed.dart';
 import 'package:cw_core/crypto_currency.dart';
@@ -90,6 +91,9 @@ abstract class OutputBase with Store {
           case WalletType.haven:
             _amount = haven!.formatterMoneroParseAmount(amount: _cryptoAmount);
             break;
+          case WalletType.ethereum:
+            _amount = ethereum!.formatterEthereumParseAmount(_cryptoAmount);
+            break;
           default:
             break;
         }
@@ -123,6 +127,10 @@ abstract class OutputBase with Store {
       if (_wallet.type == WalletType.haven) {
         return haven!.formatterMoneroAmountToDouble(amount: fee);
       }
+
+      if (_wallet.type == WalletType.ethereum) {
+        return ethereum!.formatterEthereumAmountToDouble(amount: BigInt.from(fee));
+      }
     } catch (e) {
       print(e.toString());
     }
@@ -133,8 +141,9 @@ abstract class OutputBase with Store {
   @computed
   String get estimatedFeeFiatAmount {
     try {
+      final currency = _wallet.type == WalletType.ethereum ? _wallet.currency : cryptoCurrencyHandler();
       final fiat = calculateFiatAmountRaw(
-          price: _fiatConversationStore.prices[cryptoCurrencyHandler()]!,
+          price: _fiatConversationStore.prices[currency]!,
           cryptoAmount: estimatedFee);
       return fiat;
     } catch (_) {
@@ -228,6 +237,9 @@ abstract class OutputBase with Store {
       case WalletType.haven:
         maximumFractionDigits = 12;
         break;
+      case WalletType.ethereum:
+        maximumFractionDigits = 12;
+        break;
       default:
         break;
     }

lib/view_model/send/send_template_view_model.dart

@@ -13,8 +13,7 @@ import 'package:cake_wallet/store/settings_store.dart';
 
 part 'send_template_view_model.g.dart';
 
-class SendTemplateViewModel = SendTemplateViewModelBase
-    with _$SendTemplateViewModel;
+class SendTemplateViewModel = SendTemplateViewModelBase with _$SendTemplateViewModel;
 
 abstract class SendTemplateViewModelBase with Store {
   final WalletBase _wallet;
@@ -22,8 +21,8 @@ abstract class SendTemplateViewModelBase with Store {
   final SendTemplateStore _sendTemplateStore;
   final FiatConversionStore _fiatConversationStore;
 
-  SendTemplateViewModelBase(this._wallet, this._settingsStore,
-      this._sendTemplateStore, this._fiatConversationStore)
+  SendTemplateViewModelBase(
+      this._wallet, this._settingsStore, this._sendTemplateStore, this._fiatConversationStore)
       : recipients = ObservableList<TemplateViewModel>() {
     addRecipient();
   }
@@ -33,7 +32,6 @@ abstract class SendTemplateViewModelBase with Store {
   @action
   void addRecipient() {
     recipients.add(TemplateViewModel(
-        cryptoCurrency: cryptoCurrency,
         wallet: _wallet,
         settingsStore: _settingsStore,
         fiatConversationStore: _fiatConversationStore));
@@ -47,11 +45,13 @@ abstract class SendTemplateViewModelBase with Store {
   AmountValidator get amountValidator =>
       AmountValidator(currency: walletTypeToCryptoCurrency(_wallet.type));
 
-  AddressValidator get addressValidator =>
-      AddressValidator(type: _wallet.currency);
+  AddressValidator get addressValidator => AddressValidator(type: _wallet.currency);
 
   TemplateValidator get templateValidator => TemplateValidator();
 
+  bool get hasMultiRecipient =>
+      _wallet.type != WalletType.haven && _wallet.type != WalletType.ethereum;
+
   @computed
   CryptoCurrency get cryptoCurrency => _wallet.currency;
 
@@ -68,6 +68,7 @@ abstract class SendTemplateViewModelBase with Store {
   void addTemplate(
       {required String name,
       required bool isCurrencySelected,
+      required String cryptoCurrency,
       required String address,
       required String amount,
       required String amountFiat,
@@ -76,7 +77,7 @@ abstract class SendTemplateViewModelBase with Store {
         name: name,
         isCurrencySelected: isCurrencySelected,
         address: address,
-        cryptoCurrency: cryptoCurrency.title,
+        cryptoCurrency: cryptoCurrency,
         fiatCurrency: fiatCurrency,
         amount: amount,
         amountFiat: amountFiat,
@@ -89,4 +90,7 @@ abstract class SendTemplateViewModelBase with Store {
     _sendTemplateStore.remove(template: template);
     updateTemplate();
   }
+
+  @computed
+  List<CryptoCurrency> get walletCurrencies => _wallet.balance.keys.toList();
 }

lib/view_model/send/send_view_model.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/entities/priority_for_wallet_type.dart';
 import 'package:cake_wallet/entities/transaction_description.dart';
 import 'package:cake_wallet/entities/wallet_contact.dart';
 import 'package:cake_wallet/view_model/contact_list/contact_list_view_model.dart';
+import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/view_model/dashboard/balance_view_model.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cake_wallet/view_model/send/output.dart';
@@ -45,6 +46,7 @@ abstract class SendViewModelBase with Store {
       : state = InitialExecutionState(),
         currencies = _wallet.balance.keys.toList(),
         selectedCryptoCurrency = _wallet.currency,
+        hasMultipleTokens = _wallet.type == WalletType.ethereum,
         outputs = ObservableList<Output>(),
         fiatFromSettings = _settingsStore.fiatCurrency {
     final priority = _settingsStore.priority[_wallet.type];
@@ -105,8 +107,11 @@ abstract class SendViewModelBase with Store {
   String get pendingTransactionFeeFiatAmount {
     try {
       if (pendingTransaction != null) {
+        final currency = walletType == WalletType.ethereum
+            ? _wallet.currency
+            : selectedCryptoCurrency;
         final fiat = calculateFiatAmount(
-            price: _fiatConversationStore.prices[selectedCryptoCurrency]!,
+            price: _fiatConversationStore.prices[currency]!,
             cryptoAmount: pendingTransaction!.feeFormatted);
         return fiat;
       } else {
@@ -131,14 +136,14 @@ abstract class SendViewModelBase with Store {
 
   CryptoCurrency get currency => _wallet.currency;
 
-  Validator get amountValidator =>
+  Validator<String> get amountValidator =>
       AmountValidator(currency: walletTypeToCryptoCurrency(_wallet.type));
 
-  Validator get allAmountValidator => AllAmountValidator();
+  Validator<String> get allAmountValidator => AllAmountValidator();
 
-  Validator get addressValidator => AddressValidator(type: selectedCryptoCurrency);
+  Validator<String> get addressValidator => AddressValidator(type: selectedCryptoCurrency);
 
-  Validator get textValidator => TextValidator();
+  Validator<String> get textValidator => TextValidator();
 
   final FiatCurrency fiatFromSettings;
 
@@ -146,7 +151,7 @@ abstract class SendViewModelBase with Store {
   PendingTransaction? pendingTransaction;
 
   @computed
-  String get balance => balanceViewModel.availableBalance;
+  String get balance => _wallet.balance[selectedCryptoCurrency]!.formattedAvailableBalance;
 
   @computed
   bool get isFiatDisabled => balanceViewModel.isFiatDisabled;
@@ -176,10 +181,9 @@ abstract class SendViewModelBase with Store {
 
   List<CryptoCurrency> currencies;
 
-  bool get hasMultiRecipient => _wallet.type != WalletType.haven;
-
-  bool get hasYat => outputs
-      .any((out) => out.isParsedAddress && out.parsedAddress.parseFrom == ParseFrom.yatRecord);
+  bool get hasYat => outputs.any((out) =>
+      out.isParsedAddress &&
+      out.parsedAddress.parseFrom == ParseFrom.yatRecord);
 
   WalletType get walletType => _wallet.type;
 
@@ -198,6 +202,7 @@ abstract class SendViewModelBase with Store {
   final ContactListViewModel contactListViewModel;
   final FiatConversionStore _fiatConversationStore;
   final Box<TransactionDescription> transactionDescriptionBox;
+  final bool hasMultipleTokens;
 
   @computed
   List<ContactRecord> get contactsToShow => contactListViewModel.contacts
@@ -351,6 +356,15 @@ abstract class SendViewModelBase with Store {
 
         return haven!.createHavenTransactionCreationCredentials(
             outputs: outputs, priority: priority, assetType: selectedCryptoCurrency.title);
+      case WalletType.ethereum:
+        final priority = _settingsStore.priority[_wallet.type];
+
+        if (priority == null) {
+          throw Exception('Priority is null for wallet type: ${_wallet.type}');
+        }
+
+        return ethereum!.createEthereumTransactionCredentials(
+            outputs, priority: priority, currency: selectedCryptoCurrency);
       default:
         throw Exception('Unexpected wallet type: ${_wallet.type}');
     }
@@ -369,11 +383,22 @@ abstract class SendViewModelBase with Store {
   }
 
   bool _isEqualCurrency(String currency) =>
-      currency.toLowerCase() == _wallet.currency.title.toLowerCase();
+      _wallet.balance.keys.any((e) => currency.toLowerCase() == e.title.toLowerCase());
 
   @action
   void onClose() => _settingsStore.fiatCurrency = fiatFromSettings;
 
   @action
-  void setFiatCurrency(FiatCurrency fiat) => _settingsStore.fiatCurrency = fiat;
+  void setFiatCurrency(FiatCurrency fiat) =>
+      _settingsStore.fiatCurrency = fiat;
+
+  @action
+  void setSelectedCryptoCurrency(String cryptoCurrency) {
+    try {
+      selectedCryptoCurrency = _wallet.balance.keys
+          .firstWhere((e) => cryptoCurrency.toLowerCase() == e.title.toLowerCase());
+    } catch (e) {
+      selectedCryptoCurrency = _wallet.currency;
+    }
+  }
 }

lib/view_model/send/template_view_model.dart

@@ -11,23 +11,20 @@ part 'template_view_model.g.dart';
 class TemplateViewModel = TemplateViewModelBase with _$TemplateViewModel;
 
 abstract class TemplateViewModelBase with Store {
-  final CryptoCurrency cryptoCurrency;
   final WalletBase _wallet;
   final SettingsStore _settingsStore;
   final FiatConversionStore _fiatConversationStore;
 
-  TemplateViewModelBase(
-      {required this.cryptoCurrency,
-      required WalletBase wallet,
-      required SettingsStore settingsStore,
-      required FiatConversionStore fiatConversationStore})
-      : _wallet = wallet,
+  TemplateViewModelBase({
+    required WalletBase wallet,
+    required SettingsStore settingsStore,
+    required FiatConversionStore fiatConversationStore,
+  })  : _wallet = wallet,
         _settingsStore = settingsStore,
         _fiatConversationStore = fiatConversationStore,
-        output = Output(wallet, settingsStore, fiatConversationStore,
-            () => wallet.currency) {
-    output = Output(
-        _wallet, _settingsStore, _fiatConversationStore, () => cryptoCurrency);
+        _currency = wallet.currency,
+        output = Output(wallet, settingsStore, fiatConversationStore, () => wallet.currency) {
+    output = Output(_wallet, _settingsStore, _fiatConversationStore, () => _currency);
   }
 
   @observable
@@ -39,6 +36,9 @@ abstract class TemplateViewModelBase with Store {
   @observable
   String address = '';
 
+  @observable
+  CryptoCurrency _currency;
+
   @observable
   bool isCurrencySelected = true;
 
@@ -66,8 +66,7 @@ abstract class TemplateViewModelBase with Store {
     output.reset();
   }
 
-  Template toTemplate(
-      {required String cryptoCurrency, required String fiatCurrency}) {
+  Template toTemplate({required String cryptoCurrency, required String fiatCurrency}) {
     return Template(
         isCurrencySelectedRaw: isCurrencySelected,
         nameRaw: name,
@@ -77,4 +76,13 @@ abstract class TemplateViewModelBase with Store {
         amountRaw: output.cryptoAmount,
         amountFiatRaw: output.fiatAmount);
   }
+
+  @action
+  void changeSelectedCurrency(CryptoCurrency currency) {
+    isCurrencySelected = true;
+    _currency = currency;
+  }
+
+  @computed
+  CryptoCurrency get selectedCurrency => _currency;
 }