exchange_destination_form.dart

Lines 1–193

import 'package:flutter/material.dart';import 'package:flutter_riverpod/flutter_riverpod.dart';import '../../platform/application/platform_providers.dart';import '../../../core/widgets/app_states.dart';import 'exchange_support.dart';import 'exchange_deposit_address.dart';import 'exchange_disclaimer.dart'; class ExchangeDestinationForm extends ConsumerStatefulWidget {  const ExchangeDestinationForm({super.key, required this.bank});  final bool bank;  @override  ConsumerState<ExchangeDestinationForm> createState() =>      _ExchangeDestinationFormState();} class _ExchangeDestinationFormState    extends ConsumerState<ExchangeDestinationForm> {  Map<String, dynamic> bank = {'beneficiaryType': 'individual'};  String name = '', address = '', currency = 'USDT';  int chain = 1;  bool confirmed = false, busy = false;  String? error;  @override  void initState() {    super.initState();    if (widget.bank) currency = 'EUR';  }   bool get addressValid => chain == -200      ? address.startsWith('T') &&          exchangeDepositAddress(chain, address) == address      : RegExp(r'^0x[0-9a-fA-F]{40}$').hasMatch(address);  bool get complete =>      confirmed &&      (widget.bank          ? exchangeBankComplete(bank) &&              (bank['accountNumber'] as String)                  .startsWith(bank['country'] as String)          : name.trim().isNotEmpty && name.length <= 100 && addressValid);   Future<void> save() async {    if (busy || !complete) return;    setState(() {      busy = true;      error = null;    });    try {      final api = ref.read(mobilePlatformApiProvider);      final result = widget.bank          ? await api.registerExchangeBank({              'name': bank['name'],              'currency': currency,              'account_number': bank['accountNumber'],              'bank_name': bank['bankName'],              'account_holder_name': bank['accountHolderName'],              'country': bank['country'],              'beneficiary_type': bank['beneficiaryType'],              if (bank['beneficiaryType'] == 'individual') ...{                'first_name': bank['firstName'],                'last_name': bank['lastName']              },            })          : await api.registerExchangeCrypto({              'name': name.trim(),              'currency': currency,              'chain_id': chain,              'address': address            });      final id = int.tryParse(exchangeText(result, 'id'));      if (id == null || id <= 0) {        throw StateError(            'The provider has not confirmed the saved destination. Refresh your destinations before retrying.');      }      if (mounted) {        Navigator.pop(context, <String, dynamic>{          ...result,          'type': widget.bank ? 'Fiat' : 'Digital',          'name': exchangeText(result, 'name').isEmpty              ? (widget.bank ? bank['name'] : name.trim())              : exchangeText(result, 'name'),          'currencies': [currency],          'chainId': widget.bank ? 0 : chain,        });      }    } catch (e) {      if (mounted) setState(() => error = friendlyErrorMessage(e));    } finally {      if (mounted) setState(() => busy = false);    }  }   @override  Widget build(BuildContext context) => PopScope(        canPop: !busy,        child: ExchangeDialog(          title: widget.bank ? 'Add bank account' : 'Add crypto address',          subtitle:              'Save a destination for future withdrawals. Saving does not transfer any funds.',          actions: [            TextButton(                onPressed: busy ? null : () => Navigator.pop(context),                child: const Text('Cancel')),            FilledButton(                key: const ValueKey('save-exchange-destination'),                onPressed: busy || !complete ? null : save,                child: Text(busy ? 'Saving…' : 'Save destination')),          ],          child: ExchangeFormColumn(children: [            if (error != null) ExchangeNotice(error!, isError: true),            if (busy) const LinearProgressIndicator(),            DropdownButtonFormField<String>(              initialValue: currency,              decoration: const InputDecoration(labelText: 'Currency'),              items: [                for (final value                    in widget.bank ? ['EUR', 'USD', 'GBP'] : ['USDC', 'USDT'])                  DropdownMenuItem(value: value, child: Text(value))              ],              onChanged: busy                  ? null                  : (value) => setState(() {                        currency = value!;                        confirmed = false;                      }),            ),            if (widget.bank)              ExchangeBankFields(                  value: bank,                  enabled: !busy,                  onChanged: (value) => setState(() {                        bank = value;                        confirmed = false;                      }))            else ...[              TextFormField(                  key: const ValueKey('destination-name'),                  enabled: !busy,                  maxLength: 100,                  decoration:                      const InputDecoration(labelText: 'Destination name'),                  onChanged: (value) => setState(() {                        name = value;                        confirmed = false;                      })),              DropdownButtonFormField<int>(                  initialValue: chain,                  decoration: const InputDecoration(labelText: 'Network'),                  items: const [                    DropdownMenuItem(value: 1, child: Text('Ethereum (ERC20)')),                    DropdownMenuItem(value: -200, child: Text('Tron (TRC20)')),                    DropdownMenuItem(value: 137, child: Text('Polygon')),                    DropdownMenuItem(value: 42161, child: Text('Arbitrum'))                  ],                  onChanged: busy                      ? null                      : (value) => setState(() {                            chain = value!;                            confirmed = false;                          })),              TextFormField(                  key: const ValueKey('destination-address'),                  enabled: !busy,                  minLines: 1,                  maxLines: 3,                  autocorrect: false,                  decoration: InputDecoration(                      labelText: 'Wallet address',                      errorText: address.isNotEmpty && !addressValid                          ? 'Enter a valid address for the selected network.'                          : null),                  onChanged: (value) => setState(() {                        address = value.trim();                        confirmed = false;                      })),              const ExchangeNotice(                  'Always check the recipient address and network before withdrawing. Transfers to the wrong address or network may be irreversible.'),            ],            CheckboxListTile(                key: const ValueKey('confirm-destination-details'),                contentPadding: EdgeInsets.zero,                value: confirmed,                onChanged: busy                    ? null                    : (value) => setState(() => confirmed = value == true),                title:                    const Text('I confirm the recipient details are correct.'),                controlAffinity: ListTileControlAffinity.leading),            const ExchangeDisclaimer(),          ]),        ),      );}