exchange_panel.dart

Lines 1–1233

import 'exchange_deposit_history.dart';import 'exchange_flow_dialog.dart';import 'exchange_disclaimer.dart';import 'exchange_account_details.dart';import 'exchange_verification_panel.dart';import 'exchange_onboarding_panel.dart';import 'exchange_support.dart';import 'package:mobile_flutter/core/l10n/app_localizations.dart';import 'package:flutter/material.dart';import 'package:flutter/foundation.dart';import 'package:flutter_riverpod/flutter_riverpod.dart'; import '../../../brands/cardeo/cardeo.dart';import '../../../core/models/platform_models.dart';import '../../../core/widgets/app_states.dart';import '../../auth/presentation/cardeo_otp_field.dart';import '../../platform/application/platform_providers.dart';import '../../platform/presentation/platform_widgets.dart';import '../../rewards/domain/rewards_models.dart';import '../domain/exchange_models.dart';import '../domain/wallet_models.dart';import '../domain/exchange_transfer_routes.dart';import '../data/wallet_providers.dart';import '../../crypto/presentation/crypto_trade_screen.dart'; Color _hairline(BuildContext context, double alpha) =>    CardeoTheme.isLight(context)        ? CardeoPalette.of(context).borderSubtle        : CardeoPalette.of(context).borderSubtle.withValues(alpha: alpha); class ExchangePanel extends ConsumerWidget {  const ExchangePanel({    required this.config,    required this.budgets,    required this.wallets,    required this.transferSection,    this.onConvertToEur,    super.key,  });   final MobileTenantConfig config;  final List<PlatformResource> budgets;  final List<HoppaWalletAsset> wallets;  final Widget transferSection;  final Future<void> Function(PlatformResource budget)? onConvertToEur;   @override  Widget build(BuildContext context, WidgetRef ref) {    final overview = ref.watch(exchangeOverviewProvider);    final isCardeo = context.isCardeoTheme;     return overview.when(      skipLoadingOnReload: true,      loading: () => isCardeo          ? PlatformLoadingGroup(              title: context.tr('Exchange balances'),              rows: 3,              label: context.tr('Loading Exchange'),            )          : LoadingState(label: context.tr('Loading Exchange')),      error: (error, stackTrace) => isCardeo          ? const _CardeoExchangeUnavailable()          : ErrorState(              error: error,              onRetry: () => ref.invalidate(exchangeOverviewProvider),            ),      data: (data) {        if (!data.isReady) {          return const ExchangeOnboardingPanel(legacy: ExchangeVerificationPanel());        }         return _ReadyExchangePanel(          overview: data,          outflowsEnabled: config.walletOutflowsEnabled,          budgets: budgets,          wallets: wallets,          transferSection: transferSection,          onConvertToEur: onConvertToEur,        );      },    );  }} class _CardeoExchangeUnavailable extends ConsumerWidget {  const _CardeoExchangeUnavailable();   @override  Widget build(BuildContext context, WidgetRef ref) => Semantics(        liveRegion: true,        container: true,        child: CardeoGlassPanel(          radius: 20,          padding: const EdgeInsets.all(20),          child: Column(            crossAxisAlignment: CrossAxisAlignment.start,            children: [              Row(                children: [                  CardeoIconTile(                    icon: Icons.swap_horiz_rounded,                    color: CardeoPalette.of(context).warning,                  ),                  const SizedBox(width: 12),                  Expanded(                    child: Text(                      context.tr('Exchange is not available right now'),                      style: TextStyle(                        fontSize: 15,                        fontWeight: FontWeight.w700,                        color: CardeoInk.primary(context),                      ),                    ),                  ),                ],              ),              const SizedBox(height: 10),              Text(                context.tr(                    'The exchange provider did not return your balances. Your money and crypto accounts are not affected.'),                style: TextStyle(                  fontSize: 12.5,                  height: 1.45,                  color: CardeoInk.secondary(context),                ),              ),              const SizedBox(height: 14),              CardeoGlassButton(                label: context.tr('Try again'),                icon: Icons.refresh_rounded,                tone: CardeoGlassButtonTone.neutral,                expand: false,                sheen: false,                height: 44,                radius: 12,                onPressed: () => ref.invalidate(exchangeOverviewProvider),              ),            ],          ),        ),      );} /// Open the same funding flow from an individual Fiat account's Move menu.Future<void> showFiatAccountToCryptoCardTransfer(  BuildContext context,  WidgetRef ref, {  required PlatformResource sourceBudget,  required List<PlatformResource> budgets,  Future<void> Function(PlatformResource budget)? onConvertToEur,}) async {  try {    final config = await ref.read(mobileTenantConfigProvider.future);    if (!context.mounted) return;    if (!config.boomFiExchangeEnabled || !config.equalsMoneyEnabled ||        !config.walletOutflowsEnabled) {      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(          content: Text('Transfers are currently unavailable for this account.')));      return;    }    final overview = await ref.read(exchangeOverviewProvider.future);    if (!context.mounted) return;    if (!overview.isReady) {      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(          content: Text('Complete Exchange setup before transferring.')));      return;    }    final wallets = await ref.read(hoppaWalletAssetsProvider.future);    if (!context.mounted) return;    await showDialog<void>(      context: context,      barrierDismissible: false,      builder: (_) => ExchangeFlowDialog(        flow: ExchangeFlow.fund,        overview: overview,        outflowsEnabled: config.walletOutflowsEnabled,        budgets: [sourceBudget, ...budgets.where((b) => b.id != sourceBudget.id)],        wallets: wallets,        onConvertToEur: onConvertToEur,      ),    );  } catch (error) {    if (context.mounted) _showError(context, error);  }} /// Transfer shortcuts shared by the Money, Crypto and Exchange tab row.class ExchangeAccountTransferActions extends ConsumerWidget {  const ExchangeAccountTransferActions(      {this.config,      this.budgets,      this.wallets,      this.onConvertToEur,      super.key});  final MobileTenantConfig? config;  final List<PlatformResource>? budgets;  final List<HoppaWalletAsset>? wallets;  final Future<void> Function(PlatformResource budget)? onConvertToEur;   @override  Widget build(BuildContext context, WidgetRef ref) {    final tenant = config ?? ref.watch(mobileTenantConfigProvider).valueOrNull;    final overview = ref.watch(exchangeOverviewProvider).valueOrNull;    if (tenant == null || overview == null || !overview.isReady) {      return const SizedBox.shrink();    }    final budgets = this.budgets ??        ref.watch(budgetsProvider).valueOrNull ??        <PlatformResource>[];    final wallets = this.wallets ??        ref.watch(hoppaWalletAssetsProvider).valueOrNull ??        <HoppaWalletAsset>[];    final outflowsEnabled = tenant.walletOutflowsEnabled;    void open(ExchangeFlow flow) => showDialog<void>(        context: context,        barrierDismissible: false,        builder: (_) => ExchangeFlowDialog(            flow: flow,            overview: overview,            outflowsEnabled: outflowsEnabled,            onConvertToEur: onConvertToEur,            budgets: budgets,            wallets: wallets));    final addresses = budgets.isEmpty        ? const AsyncData<List<HoppaWalletAsset>>([])        : ref.watch(exchangeCardDepositAddressesProvider);    final eligibleWallets =        exchangeTransferRoutes(addresses.valueOrNull ?? wallets, wallets)            .where((w) =>                overview.canTrade(w.symbol) &&                overview.balances.any((b) =>                    b.currency == w.symbol &&                    b.chainId == exchangeChainId(w.network)))            .toList();    final euroBudgets = budgets;    final fundingWallets = eligibleWallets        .where((w) =>            overview.canTrade(w.symbol) &&            overview.balances.any((b) =>                b.currency == w.symbol &&                b.chainId == exchangeChainId(w.network)))        .toList();    String? unavailable({required bool funding}) {      if (!outflowsEnabled) {        return 'Transfers are currently unavailable for this account.';      }      if (euroBudgets.isEmpty) { return 'An active Fiat account is needed.'; }      if (eligibleWallets.isEmpty) {        if (addresses.isLoading) {          return 'Loading your Crypto card transfer networks…';        }        if (addresses.hasError) {          return 'Could not load your Crypto card transfer networks. Please retry.';        }        return 'No Crypto card transfer network matches an available BoomFi crypto account yet.';      }      if (funding && !overview.fiatFundingCurrencies.contains('EUR')) {        return 'BoomFi has not provided EUR bank funding details for this account yet.';      }      if (funding && fundingWallets.isEmpty) {        return 'No matching crypto receiving network is available in BoomFi yet.';      }      return null;    }     final fundReason = unavailable(funding: true);    final sellReason = unavailable(funding: false);    void sell() => _showCryptoToEqualsDialog(        context, ref, overview, euroBudgets, eligibleWallets, wallets);     Widget button(String label, String? reason, VoidCallback pressed) =>        Tooltip(          message: reason ?? label,          child: OutlinedButton(            style: OutlinedButton.styleFrom(                minimumSize: const Size(0, 48),                padding:                    const EdgeInsets.symmetric(horizontal: 14, vertical: 12)),            onPressed: reason == null ? pressed : null,            child: Text(context.tr(label), textAlign: TextAlign.center),          ),        );    return Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [      LayoutBuilder(builder: (context, constraints) {        final funding = button('Fiat account to Crypto card', fundReason,            () => open(ExchangeFlow.fund));        final selling = button('Crypto card to Fiat account', sellReason, sell);        if (constraints.maxWidth >=            600 * MediaQuery.textScalerOf(context).scale(1)) {          return Row(children: [            Expanded(child: funding),            const SizedBox(width: 12),            Expanded(child: selling)          ]);        }        return Column(            crossAxisAlignment: CrossAxisAlignment.stretch,            children: [              funding,              const SizedBox(height: 8),              selling,            ]);      }),      if (fundReason != null || sellReason != null) ...[        const SizedBox(height: 8),        for (final reason in {          if (fundReason != null) fundReason,          if (sellReason != null) sellReason        })          Text(context.tr(reason),              style: Theme.of(context).textTheme.bodySmall),        if (addresses.hasError)          TextButton(              onPressed: () {                ref.invalidate(depositAddressesProvider);                ref.invalidate(exchangeCardDepositAddressesProvider);              },              child: const Text('Retry transfer networks')),      ],    ]);  }} class _ReadyExchangePanel extends ConsumerWidget {  const _ReadyExchangePanel({    required this.overview,    required this.outflowsEnabled,    required this.budgets,    required this.wallets,    required this.transferSection,    this.onConvertToEur,  });   final BoomFiExchangeOverview overview;  final bool outflowsEnabled;  final List<PlatformResource> budgets;  final List<HoppaWalletAsset> wallets;  final Widget transferSection;  final Future<void> Function(PlatformResource budget)? onConvertToEur;   @override  Widget build(BuildContext context, WidgetRef ref) {    void open(ExchangeFlow flow) => showDialog<void>(        context: context,        barrierDismissible: false,        builder: (_) => ExchangeFlowDialog(            flow: flow,            overview: overview,            outflowsEnabled: outflowsEnabled,            onConvertToEur: onConvertToEur,            budgets: budgets,            wallets: wallets));    final cardeo = context.isCardeoTheme;    Widget action(String label, VoidCallback? onPressed,            {bool primary = false}) =>        cardeo            ? CardeoGlassButton(                label: context.tr(label),                onPressed: onPressed,                expand: false,                height: 44,                radius: 12,                tone: primary                    ? CardeoGlassButtonTone.primary                    : CardeoGlassButtonTone.neutral)            : primary                ? FilledButton(                    onPressed: onPressed, child: Text(context.tr(label)))                : OutlinedButton(                    onPressed: onPressed, child: Text(context.tr(label)));    final addresses = budgets.isEmpty        ? const AsyncData<List<HoppaWalletAsset>>([])        : ref.watch(exchangeCardDepositAddressesProvider);    final eligibleWallets =        exchangeTransferRoutes(addresses.valueOrNull ?? wallets, wallets)            .where((w) =>                overview.canTrade(w.symbol) &&                overview.balances.any((b) =>                    b.currency == w.symbol &&                    b.chainId == exchangeChainId(w.network)))            .toList();    final euroBudgets = budgets;    final fundingWallets = eligibleWallets        .where((w) =>            overview.canTrade(w.symbol) &&            overview.balances.any((b) =>                b.currency == w.symbol &&                b.chainId == exchangeChainId(w.network)))        .toList();    String? unavailable({required bool funding}) {      if (!outflowsEnabled) {        return 'Transfers are currently unavailable for this account.';      }      if (euroBudgets.isEmpty) { return 'An active Fiat account is needed.'; }      if (eligibleWallets.isEmpty) {        if (addresses.isLoading) {          return 'Loading your Crypto card transfer networks…';        }        if (addresses.hasError) {          return 'Could not load your Crypto card transfer networks. Please retry.';        }        return 'No Crypto card transfer network matches an available BoomFi crypto account yet.';      }      if (funding && !overview.fiatFundingCurrencies.contains('EUR')) {        return 'BoomFi has not provided EUR bank funding details for this account yet.';      }      if (funding && fundingWallets.isEmpty) {        return 'No matching crypto receiving network is available in BoomFi yet.';      }      return null;    }     final fundReason = unavailable(funding: true);    final sellReason = unavailable(funding: false);    void sell() => _showCryptoToEqualsDialog(        context, ref, overview, euroBudgets, eligibleWallets, wallets);    final hasFunds = overview.balances.any((b) => b.amount > 0);    final canConvert = overview.balances.any((from) =>        from.amount > 0 &&        overview.balances.any((to) =>            to.isCrypto != from.isCrypto &&            (to.isCrypto || to.currency == 'EUR')));    void details({bool destinations = false}) => showDialog<void>(        context: context,        builder: (_) => ExchangeAccountDetails(            destinations: destinations, outflowsEnabled: outflowsEnabled));    return Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [      Row(crossAxisAlignment: CrossAxisAlignment.start, children: [        Expanded(            child:                Column(crossAxisAlignment: CrossAxisAlignment.start, children: [          Text('Exchange',              style: Theme.of(context)                  .textTheme                  .headlineSmall                  ?.copyWith(fontWeight: FontWeight.w700)),          if (overview.accountName.isNotEmpty) ...[            const SizedBox(height: 4),            Text(overview.accountName,                style: Theme.of(context).textTheme.bodyMedium)          ],        ])),        IconButton(            tooltip: 'Refresh Exchange',            onPressed: () {              ref.invalidate(exchangeVerificationProvider);              ref.invalidate(exchangeOverviewProvider);              ref.invalidate(exchangeTransfersProvider);              ref.invalidate(exchangeCardDepositAddressesProvider);              ref.invalidate(depositAddressesProvider);            },            icon: const Icon(Icons.refresh)),      ]),      const SizedBox(height: 24),      Wrap(spacing: 12, runSpacing: 12, children: [        FilledButton.icon(            onPressed: () => details(),            icon: const Icon(Icons.add),            label: const Text('Deposit')),        action('Convert', canConvert ? () => open(ExchangeFlow.convert) : null),        action(            'Withdraw',            outflowsEnabled &&                    overview.balances.any((b) =>                        b.amount > 0 && (b.isCrypto || b.currency == 'EUR'))                ? () => open(ExchangeFlow.withdraw)                : null),        PopupMenuButton<String>(          tooltip: 'More exchange options',          onSelected: (value) {            if (value == 'destinations') details(destinations: true);            if (value == 'fund') open(ExchangeFlow.fund);            if (value == 'sell') {              sell();            }          },          itemBuilder: (_) => [            const PopupMenuItem(                value: 'destinations', child: Text('Saved destinations')),            PopupMenuItem(                value: 'fund',                enabled: fundReason == null,                child: const Text('Fiat account to Crypto card')),            PopupMenuItem(                value: 'sell',                enabled: sellReason == null,                child: const Text('Crypto card to Fiat account')),          ],          child: const Padding(              padding: EdgeInsets.symmetric(horizontal: 12, vertical: 12),              child: Row(mainAxisSize: MainAxisSize.min, children: [                Text('More'),                SizedBox(width: 4),                Icon(Icons.expand_more, size: 20)              ])),        ),      ]),      if (hasFunds && (!outflowsEnabled || !canConvert)) ...[        const SizedBox(height: 20),        ExchangeNotice(!outflowsEnabled            ? 'Withdrawals are currently unavailable for this account.'            : 'Conversion will be available when a compatible currency account is ready.'),      ],      const ExchangeDisclaimer(),      const SizedBox(height: 24),      Text('Balances', style: Theme.of(context).textTheme.titleMedium),      const SizedBox(height: 12),      LayoutBuilder(builder: (context, constraints) {        if (constraints.maxWidth >= 900) {          final balances = overview.displayBalances;          return Wrap(spacing: 16, runSpacing: 16, children: [            for (final balance in balances)              SizedBox(                  width: (constraints.maxWidth - 32) / 3,                  child: CardeoGlassPanel(                      padding: const EdgeInsets.all(20),                      child: Column(                          crossAxisAlignment: CrossAxisAlignment.start,                          children: [                            Text(balance.currency,                                style: Theme.of(context).textTheme.titleSmall),                            const SizedBox(height: 12),                            CardeoAmount(                                amount: balance.amount,                                currency: balance.currency,                                size: CardeoAmountSize.small),                            const SizedBox(height: 4),                            Text(                                balance.isCrypto                                    ? 'Available across networks'                                    : 'Available for conversion or withdrawal',                                style: Theme.of(context).textTheme.bodySmall),                          ]))),          ]);        }        return Column(children: [          if (cardeo)            CardeoListGroup(children: [              for (final balance in overview.displayBalances)                CardeoRow(                    title: balance.currency,                    subtitle: balance.isCrypto ? null : 'Fiat',                    trailing: CardeoAmount(                        amount: balance.amount,                        currency: balance.currency,                        size: CardeoAmountSize.small))            ])          else            for (final balance in overview.displayBalances)              ListTile(                  title: Text(balance.currency),                  subtitle: balance.isCrypto ? null : const Text('Fiat'),                  trailing: Text(balance.amount.toString())),        ]);      }),      const SizedBox(height: 28),      ExchangeDepositHistory(deposits: overview.deposits,          transfers: ref.watch(exchangeTransfersProvider).valueOrNull ?? const []),      const SizedBox(height: 24),      transferSection,    ]);  }} class _ExchangeFact extends StatelessWidget {  const _ExchangeFact({required this.label, required this.value});  final String label, value;  @override  Widget build(BuildContext context) => Padding(      padding: const EdgeInsets.symmetric(vertical: 4),      child: Row(children: [        Expanded(child: Text(label)),        Flexible(child: Text(value, textAlign: TextAlign.end))      ]));} String _formatRate(Object value) => value.toString(); class _QuoteReview extends StatelessWidget {  const _QuoteReview({required this.quote});   final Map<String, dynamic> quote;   @override  Widget build(BuildContext context) {    final fees = _map(_value(quote, 'fees', 'Fees'));    if (context.isCardeoTheme) { return _cardeo(context, fees); }    return Card(      child: Padding(        padding: const EdgeInsets.all(12),        child: Column(          crossAxisAlignment: CrossAxisAlignment.start,          children: [            Text(context.tr('Quote review'),                style: Theme.of(context).textTheme.titleSmall),            const SizedBox(height: 6),            Text(context.tr(                'Rate: {p0}', {'p0': _value(quote, 'rate', 'Rate') ?? '—'})),            Text(              context.tr('You receive: {p0} {p1}', {                'p0': _value(quote, 'buy_amount', 'BuyAmount') ??                    _value(quote, 'buyAmount', 'BuyAmount') ??                    '—',                'p1': _value(quote, 'buy_currency', 'BuyCurrency') ??                    _value(quote, 'buyCurrency', 'BuyCurrency') ??                    ''              }),            ),            Text(              context.tr('Fee: {p0} {p1}', {                'p0': _value(fees, 'total_fee', 'TotalFee') ??                    _value(fees, 'totalFee', 'TotalFee') ??                    '—',                'p1': _value(fees, 'fee_ccy', 'FeeCcy') ??                    _value(fees, 'feeCcy', 'FeeCcy') ??                    ''              }),            ),            if ((_value(quote, 'expiry', 'Expiry')?.toString() ?? '')                .isNotEmpty)              Text(context.tr(                  'Expires: {p0}', {'p0': _value(quote, 'expiry', 'Expiry')})),          ],        ),      ),    );  }   Widget _cardeo(BuildContext context, Map<String, dynamic> fees) {    final receive = _value(quote, 'buy_amount', 'BuyAmount') ??        _value(quote, 'buyAmount', 'BuyAmount');    final receiveCurrency = (_value(quote, 'buy_currency', 'BuyCurrency') ??            _value(quote, 'buyCurrency', 'BuyCurrency') ??            '')        .toString()        .trim();    final receiveValue = double.tryParse(receive?.toString().trim() ?? '');    final rate = _value(quote, 'rate', 'Rate');    final fee = _value(fees, 'total_fee', 'TotalFee') ??        _value(fees, 'totalFee', 'TotalFee');    final feeCurrency = (_value(fees, 'fee_ccy', 'FeeCcy') ??            _value(fees, 'feeCcy', 'FeeCcy') ??            '')        .toString()        .trim();    final expiry = (_value(quote, 'expiry', 'Expiry')?.toString() ?? '').trim();     return CardeoGlassPanel(      radius: 16,      padding: const EdgeInsets.fromLTRB(14, 12, 14, 13),      child: Column(        crossAxisAlignment: CrossAxisAlignment.start,        children: [          Text(            context.tr('You receive'),            style: TextStyle(              fontSize: 11.5,              color: CardeoInk.tertiary(context),            ),          ),          const SizedBox(height: 3),          if (receiveValue != null)            CardeoAmount(              amount: receiveValue,              currency: receiveCurrency,              size: CardeoAmountSize.small,              code: CardeoAmountCode.always,            )          else            Text(              '${receive ?? '—'} $receiveCurrency'.trim(),              maxLines: 1,              overflow: TextOverflow.ellipsis,              style: TextStyle(                fontSize: 18,                fontWeight: FontWeight.w600,                color: CardeoInk.primary(context),                fontFeatures: const [FontFeature.tabularFigures()],              ),            ),          const SizedBox(height: 10),          Divider(height: 1, thickness: 1, color: _hairline(context, .14)),          const SizedBox(height: 9),          _ExchangeFact(            label: context.tr('Rate'),            value: rate == null ? '—' : _formatRate(rate),          ),          const SizedBox(height: 4),          _ExchangeFact(            label: context.tr('Fee'),            value: fee == null ? '—' : '$fee $feeCurrency'.trim(),          ),          if (expiry.isNotEmpty) ...[            const SizedBox(height: 4),            _ExchangeFact(label: context.tr('Quote expires'), value: expiry),          ],        ],      ),    );  }} class _DropdownLabel extends StatelessWidget {  const _DropdownLabel(this.text);   final String text;   @override  Widget build(BuildContext context) => context.isCardeoTheme      ? Text(text, maxLines: 1, overflow: TextOverflow.ellipsis)      : Text(text);} class _TransferDialogTitle extends StatelessWidget {  const _TransferDialogTitle({required this.cardeo, required this.whiteLabel});   final String cardeo;  final String whiteLabel;   @override  Widget build(BuildContext context) =>      Text(context.isCardeoTheme ? cardeo : whiteLabel);} class _TransferDialogLede extends StatelessWidget {  const _TransferDialogLede({required this.text, this.large = false});   final String text;   final bool large;   @override  Widget build(BuildContext context) {    if (context.isCardeoTheme) { return PlatformLede(text: text); }    return Text(      text,      style: large ? Theme.of(context).textTheme.bodyLarge : null,    );  }} Future<void> _showCryptoToEqualsDialog(  BuildContext context,  WidgetRef ref,  BoomFiExchangeOverview overview,  List<PlatformResource> budgets,  List<HoppaWalletAsset> wallets,  List<HoppaWalletAsset> balances,) async {  final currencyWallets = exchangeTransferCurrencyRoutes(      wallets, canTrade: overview.canTrade);  if (currencyWallets.isEmpty) return;  var wallet = currencyWallets.first;  var budget = budgets.first;  var cryptoAmount = '';  const fiatCurrency = 'EUR';  var currentBalances = balances;  var refreshing = false;  String? balanceError;  double available() =>      currentBalances          .where((b) => b.symbol.toUpperCase() == wallet.symbol)          .firstOrNull          ?.amount ??      0;  double quantumAvailable() =>      currentBalances          .where((b) => b.symbol.toUpperCase() == 'USD')          .firstOrNull          ?.amount ??      0;  Map<String, dynamic>? quote;  String verificationToken = '';  var otp = '';  var busy = false;  var termsAccepted = false;  final reference = 'mobile-equals-${DateTime.now().microsecondsSinceEpoch}';   Map<String, Object?> request() => {        'boomFiAccountId': overview.accountId.toString(),        'reference': reference,        'chainId': exchangeChainId(wallet.network),        'currency': wallet.symbol.toUpperCase(),        'cryptoAmount': cryptoAmount.replaceAll(',', '.'),        'fiatCurrency': fiatCurrency,        'targetBudgetId': budget.id,      };   await showDialog<void>(    context: context,    builder: (dialogContext) => StatefulBuilder(      builder: (context, setState) => _FullScreenExchangeDialog(        title: const _TransferDialogTitle(          cardeo: 'Crypto card to Fiat account',          whiteLabel: 'Crypto card to Fiat account',        ),        canClose: !busy,        primaryLabel: quote == null            ? 'Get quote'            : verificationToken.isEmpty                ? 'Send verification code'                : 'Confirm transfer',        onPrimary: quote == null            ? (busy ||                    refreshing ||                    balanceError != null ||                    (double.tryParse(cryptoAmount.replaceAll(',', '.')) ?? 0) <=                        0 ||                    exchangeChainId(wallet.network) == 0 ||                    (double.tryParse(cryptoAmount.replaceAll(',', '.')) ?? 0) >                        available()                ? null                : () async {                    setState(() => busy = true);                    try {                      final result = await ref                          .read(mobilePlatformApiProvider)                          .getInterlaceToEqualsQuote(request());                      if (context.mounted) setState(() => quote = result);                    } catch (error) {                      if (context.mounted) _showError(context, error);                    } finally {                      if (context.mounted) setState(() => busy = false);                    }                  })            : verificationToken.isEmpty                ? (busy || !termsAccepted                    ? null                    : () async {                        setState(() => busy = true);                        try {                          final result = await ref                              .read(mobilePlatformApiProvider)                              .initiateInterlaceToEquals(request());                          final token = (_value(                                    result,                                    'verificationToken',                                    'VerificationToken',                                  ) ??                                  '')                              .toString();                          if (token.isEmpty) {                            throw StateError(                              'The provider did not return a verification token.',                            );                          }                          setState(() => verificationToken = token);                        } catch (error) {                          if (context.mounted) _showError(context, error);                        } finally {                          if (context.mounted) setState(() => busy = false);                        }                      })                : (busy || !termsAccepted || otp.length != 8                    ? null                    : () async {                        setState(() => busy = true);                        try {                          final result = await ref                              .read(mobilePlatformApiProvider)                              .confirmInterlaceToEquals(                                verificationToken: verificationToken,                                otpCode: otp,                              );                          ref.invalidate(exchangeTransfersProvider);                          if (dialogContext.mounted) {                            Navigator.pop(dialogContext);                            ScaffoldMessenger.of(context).showSnackBar(                              SnackBar(content: Text(result.message)),                            );                          }                        } catch (error) {                          if (context.mounted) _showError(context, error);                        } finally {                          if (context.mounted) setState(() => busy = false);                        }                      }),        child: SingleChildScrollView(          padding: const EdgeInsets.all(20),          child: Column(            crossAxisAlignment: CrossAxisAlignment.start,            children: [              _TransferDialogLede(                large: true,                text: context.tr(                    'Convert crypto and deliver the fiat proceeds to your fiat account.'),              ),              const SizedBox(height: 20),              DropdownButtonFormField<String>(                initialValue: wallet.symbol,                isExpanded: true,                decoration: InputDecoration(                    labelText: context.tr('Crypto currency')),                items: [                  for (final item in currencyWallets)                    DropdownMenuItem(                      value: item.symbol,                      child: _DropdownLabel(                        item.symbol,                      ),                    ),                ],                onChanged: busy || verificationToken.isNotEmpty                    ? null                    : (value) => setState(() {                          wallet = currencyWallets.firstWhere(                              (item) => item.symbol == value);                          quote = null;                          termsAccepted = false;                        }),              ),              const SizedBox(height: 12),              DropdownButtonFormField<String>(                initialValue: budget.id,                isExpanded: true,                decoration: InputDecoration(                    labelText: context.tr('Fiat account destination')),                items: [                  for (final item in budgets)                    DropdownMenuItem(                      value: item.id,                      child: _DropdownLabel(item.title),                    ),                ],                onChanged: busy || verificationToken.isNotEmpty                    ? null                    : (value) => setState(() {                          budget =                              budgets.firstWhere((item) => item.id == value);                          quote = null;                          termsAccepted = false;                        }),              ),              const SizedBox(height: 12),              Text(                  'Available across networks: ${_amount(available())} ${wallet.symbol}'),              const Text('You receive EUR in your Fiat account.'),              if ((double.tryParse(cryptoAmount.replaceAll(',', '.')) ?? 0) >                      available() ||                  available() <= 0) ...[                const SizedBox(height: 8),                const Text(                    'Your crypto balance is insufficient. Convert Quantum USD first, then continue with this transfer.'),                if (quantumAvailable() > 0)                  TextButton(                    onPressed:                        busy || refreshing || verificationToken.isNotEmpty                            ? null                            : () async {                                setState(() {                                  refreshing = true;                                  quote = null;                                  termsAccepted = false;                                  balanceError = null;                                });                                try {                                  await showCryptoExchangeSheet(context,                                      initialAsset: wallet.symbol);                                  ref.invalidate(userAssetsProvider);                                  ref.invalidate(userWalletsProvider);                                  ref.invalidate(hoppaWalletAssetsProvider);                                  final updated = await ref                                      .read(hoppaWalletAssetsProvider.future);                                  if (context.mounted) {                                    setState(() => currentBalances = updated);                                  }                                } catch (_) {                                  if (context.mounted) {                                    setState(() => balanceError =                                        'Could not refresh your crypto balance. Close and reopen this transfer before continuing.');                                  }                                } finally {                                  if (context.mounted) {                                    setState(() => refreshing = false);                                  }                                }                              },                    child: Text('Convert Quantum USD to ${wallet.symbol}'),                  )                else                  const Text(                      'Add crypto or fund your Quantum USD balance to continue.'),              ],              if (refreshing) const Text('Refreshing your available balance…'),              if (balanceError != null) Text(balanceError!),              const SizedBox(height: 12),              TextField(                enabled: !busy && verificationToken.isEmpty,                decoration: InputDecoration(                    labelText:                        context.tr('Amount ({p0})', {'p0': wallet.symbol})),                keyboardType:                    const TextInputType.numberWithOptions(decimal: true),                onChanged: busy || verificationToken.isNotEmpty                    ? null                    : (value) => setState(() {                          cryptoAmount = value;                          quote = null;                          termsAccepted = false;                        }),              ),              if (quote != null) ...[                const SizedBox(height: 12),                _QuoteReview(quote: quote!),              ],              if (quote != null)                ExchangeTerms(                    accepted: termsAccepted,                    enabled: !busy && verificationToken.isEmpty,                    onChanged: (v) => setState(() => termsAccepted = v)),              if (verificationToken.isNotEmpty) ...[                const SizedBox(height: 12),                Text(                  context.tr('Email verification code'),                  style: Theme.of(context).textTheme.bodySmall,                ),                const SizedBox(height: 8),                _ExchangeOtpField(                  enabled: !busy,                  onChanged: (value) => setState(() => otp = value.trim()),                ),              ],            ],          ),        ),      ),    ),  );} /// The eight code cells of the crypto-to-fiat confirmation. The dialog above/// is a closure over plain locals, so the controller the cells need lives/// here, where it is disposed with the route rather than guessed at after/// `showDialog` returns.class _ExchangeOtpField extends StatefulWidget {  const _ExchangeOtpField({required this.enabled, required this.onChanged});   final bool enabled;  final ValueChanged<String> onChanged;   @override  State<_ExchangeOtpField> createState() => _ExchangeOtpFieldState();} class _ExchangeOtpFieldState extends State<_ExchangeOtpField> {  final _controller = TextEditingController();   @override  void dispose() {    _controller.dispose();    super.dispose();  }   @override  Widget build(BuildContext context) => CardeoOtpField(        controller: _controller,        length: 8,        enabled: widget.enabled,        label: context.tr('Email verification code'),        onChanged: widget.onChanged,      );} class _FullScreenExchangeDialog extends StatelessWidget {  const _FullScreenExchangeDialog({    required this.title,    required this.child,    required this.primaryLabel,    required this.onPrimary,    this.canClose = true,  });   final Widget title;  final Widget child;  final String primaryLabel;  final VoidCallback? onPrimary;  final bool canClose;   @override  Widget build(BuildContext context) {    final size = MediaQuery.sizeOf(context);    if (kIsWeb && size.width >= 600) {      return PopScope(        canPop: canClose,        child: Dialog(          backgroundColor: Colors.transparent,          insetPadding: EdgeInsets.symmetric(            horizontal: size.width < 720 ? 16 : 32,            vertical: 24,          ),          child: Material(            color: context.isCardeoTheme                ? CardeoSurface.navigationOf(context)                : Theme.of(context).scaffoldBackgroundColor,            shape: RoundedRectangleBorder(              borderRadius: BorderRadius.circular(20),              side: BorderSide(                color: context.isCardeoTheme                    ? _hairline(context, .16)                    : Colors.transparent,              ),            ),            clipBehavior: Clip.antiAlias,            child: SizedBox(              width: 680,              height: (size.height - 48).clamp(380, 560).toDouble(),              child: Column(                children: [                  Padding(                    padding: const EdgeInsets.fromLTRB(20, 14, 12, 10),                    child: Row(                      children: [                        Expanded(                          child: DefaultTextStyle.merge(                            style: Theme.of(context).textTheme.titleLarge,                            child: title,                          ),                        ),                        IconButton(                          tooltip: context.tr('Close'),                          visualDensity: VisualDensity.compact,                          onPressed: canClose                              ? () => Navigator.of(context).pop()                              : null,                          icon: const Icon(Icons.close_rounded),                        ),                      ],                    ),                  ),                  const Divider(height: 1),                  Expanded(child: SafeArea(top: false, child: child)),                  const Divider(height: 1),                  Padding(                    padding: const EdgeInsets.fromLTRB(20, 12, 20, 16),                    child: Row(                      mainAxisAlignment: MainAxisAlignment.end,                      children: [                        TextButton(                          style: context.isCardeoTheme                              ? TextButton.styleFrom(                                  minimumSize: const Size(64, 44),                                )                              : null,                          onPressed: canClose                              ? () => Navigator.of(context).pop()                              : null,                          child: Text(context.tr('Cancel')),                        ),                        const SizedBox(width: 10),                        if (context.isCardeoTheme)                          SizedBox(                            width: 180,                            child: CardeoGlassButton(                              label: primaryLabel,                              height: 44,                              onPressed: onPrimary,                            ),                          )                        else                          SizedBox(                            width: 180,                            height: 40,                            child: FilledButton(                              onPressed: onPrimary,                              child: Text(primaryLabel),                            ),                          ),                      ],                    ),                  ),                ],              ),            ),          ),        ),      );    }    return PopScope(      canPop: canClose,      child: Dialog.fullscreen(        child: Scaffold(          appBar: AppBar(            leading: IconButton(              tooltip: context.tr('Close'),              onPressed: canClose ? () => Navigator.of(context).pop() : null,              icon: const Icon(Icons.close),            ),            title: title,          ),          body: SafeArea(child: child),          bottomNavigationBar: SafeArea(            top: false,            child: Padding(              padding: const EdgeInsets.fromLTRB(20, 12, 20, 16),              child: context.isCardeoTheme                  ? CardeoGlassButton(                      label: primaryLabel,                      height: 52,                      onPressed: onPrimary,                    )                  : SizedBox(                      height: 52,                      child: FilledButton(                        onPressed: onPrimary,                        child: Text(primaryLabel),                      ),                    ),            ),          ),        ),      ),    );  }} Map<String, dynamic> _map(Object? value) {  if (value is Map<String, dynamic>) { return value; }  if (value is Map) {    return value.map((key, item) => MapEntry(key.toString(), item));  }  return const {};} Object? _value(Map<String, dynamic> json, String first, String second) =>    json[first] ?? json[second]; String _amount(double value) => value.toStringAsFixed(6); void _showError(BuildContext context, Object error) {  ScaffoldMessenger.of(context).showSnackBar(    SnackBar(content: Text(friendlyErrorMessage(error))),  );}