mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-11-17 09:47:35 +00:00
313 lines
9.6 KiB
Dart
313 lines
9.6 KiB
Dart
import 'package:cake_wallet/entities/balance_display_mode.dart';
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import 'package:cake_wallet/entities/priority_for_wallet_type.dart';
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import 'package:cake_wallet/entities/transaction_description.dart';
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import 'package:cake_wallet/view_model/dashboard/balance_view_model.dart';
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import 'package:cw_core/transaction_priority.dart';
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import 'package:cake_wallet/view_model/send/output.dart';
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import 'package:cake_wallet/view_model/send/send_template_view_model.dart';
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import 'package:hive/hive.dart';
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import 'package:mobx/mobx.dart';
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import 'package:cake_wallet/entities/template.dart';
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import 'package:cake_wallet/core/address_validator.dart';
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import 'package:cake_wallet/core/amount_validator.dart';
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import 'package:cw_core/pending_transaction.dart';
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import 'package:cake_wallet/core/validator.dart';
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import 'package:cw_core/wallet_base.dart';
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import 'package:cake_wallet/core/execution_state.dart';
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import 'package:cake_wallet/monero/monero.dart';
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import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cake_wallet/entities/fiat_currency.dart';
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import 'package:cake_wallet/entities/calculate_fiat_amount.dart';
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import 'package:cw_core/wallet_type.dart';
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import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart';
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import 'package:cake_wallet/store/settings_store.dart';
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import 'package:cake_wallet/view_model/send/send_view_model_state.dart';
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import 'package:cake_wallet/entities/parsed_address.dart';
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import 'package:cake_wallet/bitcoin/bitcoin.dart';
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import 'package:cake_wallet/haven/haven.dart';
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part 'send_view_model.g.dart';
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class SendViewModel = SendViewModelBase with _$SendViewModel;
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abstract class SendViewModelBase with Store {
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SendViewModelBase(
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this._wallet,
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this._settingsStore,
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this.sendTemplateViewModel,
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this._fiatConversationStore,
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this.balanceViewModel,
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this.transactionDescriptionBox)
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: state = InitialExecutionState(),
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currencies = _wallet.balance.keys.toList(),
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selectedCryptoCurrency = _wallet.currency,
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outputs = ObservableList<Output>(),
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fiatFromSettings = _settingsStore.fiatCurrency {
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final priority = _settingsStore.priority[_wallet.type];
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final priorities = priorityForWalletType(_wallet.type);
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if (!priorityForWalletType(_wallet.type).contains(priority)) {
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_settingsStore.priority[_wallet.type] = priorities.first;
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}
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outputs.add(Output(_wallet, _settingsStore, _fiatConversationStore, () => selectedCryptoCurrency));
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}
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@observable
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ExecutionState state;
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ObservableList<Output> outputs;
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@action
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void addOutput() {
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outputs.add(Output(_wallet, _settingsStore, _fiatConversationStore, () => selectedCryptoCurrency));
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}
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@action
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void removeOutput(Output output) {
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if (isBatchSending) {
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outputs.remove(output);
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}
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}
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@action
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void clearOutputs() {
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outputs.clear();
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addOutput();
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}
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@computed
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bool get isBatchSending => outputs.length > 1;
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@computed
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String get pendingTransactionFiatAmount {
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try {
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if (pendingTransaction != null) {
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final fiat = calculateFiatAmount(
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price: _fiatConversationStore.prices[selectedCryptoCurrency]!,
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cryptoAmount: pendingTransaction!.amountFormatted);
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return fiat;
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} else {
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return '0.00';
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}
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} catch (_) {
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return '0.00';
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}
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}
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@computed
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String get pendingTransactionFeeFiatAmount {
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try {
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if (pendingTransaction != null) {
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final fiat = calculateFiatAmount(
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price: _fiatConversationStore.prices[selectedCryptoCurrency]!,
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cryptoAmount: pendingTransaction!.feeFormatted);
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return fiat;
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} else {
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return '0.00';
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}
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} catch (_) {
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return '0.00';
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}
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}
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FiatCurrency get fiat => _settingsStore.fiatCurrency;
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TransactionPriority get transactionPriority {
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final priority = _settingsStore.priority[_wallet.type];
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if (priority == null) {
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throw Exception('Unexpected type ${_wallet.type}');
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}
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return priority;
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}
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CryptoCurrency get currency => _wallet.currency;
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Validator get amountValidator => AmountValidator(type: _wallet.type);
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Validator get allAmountValidator => AllAmountValidator();
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Validator get addressValidator => AddressValidator(type: selectedCryptoCurrency);
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Validator get textValidator => TextValidator();
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final FiatCurrency fiatFromSettings;
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@observable
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PendingTransaction? pendingTransaction;
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@computed
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String get balance => balanceViewModel.availableBalance;
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@computed
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bool get isFiatDisabled => balanceViewModel.isFiatDisabled;
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@computed
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String get pendingTransactionFiatAmountFormatted =>
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isFiatDisabled ? '' : pendingTransactionFiatAmount +
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' ' + fiat.title;
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@computed
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String get pendingTransactionFeeFiatAmountFormatted =>
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isFiatDisabled ? '' : pendingTransactionFeeFiatAmount +
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' ' + fiat.title;
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@computed
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bool get isReadyForSend => _wallet.syncStatus is SyncedSyncStatus;
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@computed
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List<Template> get templates => sendTemplateViewModel.templates
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.where((template) => _isEqualCurrency(template.cryptoCurrency))
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.toList();
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@computed
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bool get isElectrumWallet =>
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_wallet.type == WalletType.bitcoin || _wallet.type == WalletType.litecoin;
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@observable
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CryptoCurrency selectedCryptoCurrency;
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List<CryptoCurrency> currencies;
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bool get hasMultiRecipient => _wallet.type != WalletType.haven;
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bool get hasYat => outputs.any((out) =>
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out.isParsedAddress &&
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out.parsedAddress.parseFrom == ParseFrom.yatRecord);
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WalletType get walletType => _wallet.type;
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bool get hasCurrecyChanger => walletType == WalletType.haven;
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@computed
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FiatCurrency get fiatCurrency => _settingsStore.fiatCurrency;
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final WalletBase _wallet;
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final SettingsStore _settingsStore;
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final SendTemplateViewModel sendTemplateViewModel;
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final BalanceViewModel balanceViewModel;
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final FiatConversionStore _fiatConversationStore;
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final Box<TransactionDescription> transactionDescriptionBox;
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@action
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Future<void> createTransaction() async {
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try {
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state = IsExecutingState();
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pendingTransaction = await _wallet.createTransaction(_credentials());
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state = ExecutedSuccessfullyState();
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} catch (e) {
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state = FailureState(e.toString());
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}
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}
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@action
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Future<void> commitTransaction() async {
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if (pendingTransaction == null) {
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throw Exception("Pending transaction doesn't exist. It should not be happened.");
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}
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String address = outputs.fold('', (acc, value) {
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return value.isParsedAddress
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? acc + value.address + '\n' + value.extractedAddress + '\n\n'
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: acc + value.address + '\n\n';
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});
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address = address.trim();
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String note = outputs.fold('', (acc, value) {
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return acc + value.note + '\n';
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});
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note = note.trim();
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try {
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state = TransactionCommitting();
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await pendingTransaction!.commit();
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if (pendingTransaction!.id.isNotEmpty) {
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_settingsStore.shouldSaveRecipientAddress
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? await transactionDescriptionBox.add(TransactionDescription(
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id: pendingTransaction!.id,
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recipientAddress: address,
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transactionNote: note))
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: await transactionDescriptionBox.add(TransactionDescription(
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id: pendingTransaction!.id, transactionNote: note));
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}
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state = TransactionCommitted();
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} catch (e) {
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state = FailureState(e.toString());
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}
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}
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@action
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void setTransactionPriority(TransactionPriority priority) =>
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_settingsStore.priority[_wallet.type] = priority;
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Object _credentials() {
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switch (_wallet.type) {
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case WalletType.bitcoin:
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final priority = _settingsStore.priority[_wallet.type];
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if (priority == null) {
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throw Exception('Priority is null for wallet type: ${_wallet.type}');
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}
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return bitcoin!.createBitcoinTransactionCredentials(outputs, priority: priority);
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case WalletType.litecoin:
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final priority = _settingsStore.priority[_wallet.type];
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if (priority == null) {
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throw Exception('Priority is null for wallet type: ${_wallet.type}');
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}
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return bitcoin!.createBitcoinTransactionCredentials(outputs, priority: priority);
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case WalletType.monero:
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final priority = _settingsStore.priority[_wallet.type];
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if (priority == null) {
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throw Exception('Priority is null for wallet type: ${_wallet.type}');
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}
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return monero!.createMoneroTransactionCreationCredentials(
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outputs: outputs, priority: priority);
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case WalletType.haven:
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final priority = _settingsStore.priority[_wallet.type];
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if (priority == null) {
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throw Exception('Priority is null for wallet type: ${_wallet.type}');
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}
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return haven!.createHavenTransactionCreationCredentials(
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outputs: outputs, priority: priority, assetType: selectedCryptoCurrency.title);
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default:
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throw Exception('Unexpected wallet type: ${_wallet.type}');
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}
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}
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String displayFeeRate(dynamic priority) {
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final _priority = priority as TransactionPriority;
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final wallet = _wallet;
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if (isElectrumWallet) {
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final rate = bitcoin!.getFeeRate(wallet, _priority);
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return bitcoin!.bitcoinTransactionPriorityWithLabel(_priority, rate);
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}
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return priority.toString();
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}
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bool _isEqualCurrency(String currency) =>
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currency.toLowerCase() == _wallet.currency.title.toLowerCase();
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@action
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void onClose() =>
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_settingsStore.fiatCurrency = fiatFromSettings;
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@action
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void setFiatCurrency(FiatCurrency fiat) =>
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_settingsStore.fiatCurrency = fiat;
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}
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