567 lines
17 KiB
Dart
567 lines
17 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:provider/provider.dart';
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import 'package:lucide_icons_flutter/lucide_icons.dart';
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import '../../../core/theme/app_theme.dart';
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import '../../../core/theme/app_spacing.dart';
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import '../../../providers/asset_provider.dart';
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import '../../../data/models/account_models.dart';
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/// 划转页面
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class TransferPage extends StatefulWidget {
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const TransferPage({super.key});
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@override
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State<TransferPage> createState() => _TransferPageState();
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}
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class _TransferPageState extends State<TransferPage> {
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final _amountController = TextEditingController();
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final _focusNode = FocusNode();
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int _direction = 1; // 1: 资金→交易, 2: 交易→资金
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bool _isLoading = false;
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@override
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void initState() {
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super.initState();
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_amountController.addListener(() => setState(() {}));
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WidgetsBinding.instance.addPostFrameCallback((_) {
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context.read<AssetProvider>().refreshAll(force: true);
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});
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}
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@override
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void dispose() {
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_amountController.dispose();
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_focusNode.dispose();
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super.dispose();
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}
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// ============================================
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// 数据访问
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// ============================================
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String get _fundBalance {
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try {
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final provider = context.read<AssetProvider>();
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final balance = provider.fundAccount?.balance ??
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provider.overview?.fundBalance ??
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'0.00';
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return _formatBalance(balance);
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} catch (e) {
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return '0.00';
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}
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}
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String get _tradeUsdtBalance {
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try {
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final provider = context.read<AssetProvider>();
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if (provider.tradeAccounts.isEmpty) return '0.00';
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final usdtHolding = provider.tradeAccounts.firstWhere(
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(t) => t.coinCode.toUpperCase() == 'USDT',
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orElse: () => AccountTrade(
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id: 0,
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userId: 0,
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coinCode: 'USDT',
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quantity: '0',
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avgPrice: '1',
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totalCost: '0',
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currentValue: '0',
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profit: '0',
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profitRate: 0,
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),
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);
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return _formatBalance(usdtHolding.quantity);
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} catch (e) {
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return '0.00';
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}
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}
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String get _availableBalance =>
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_direction == 1 ? _fundBalance : _tradeUsdtBalance;
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String get _fromLabel => _direction == 1 ? '資金賬戶' : '交易賬戶';
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String get _toLabel => _direction == 1 ? '交易賬戶' : '資金賬戶';
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String get _fromBalance => _direction == 1 ? _fundBalance : _tradeUsdtBalance;
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String get _toBalance => _direction == 1 ? _tradeUsdtBalance : _fundBalance;
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// ============================================
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// 业务逻辑
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// ============================================
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Future<void> _doTransfer() async {
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final amount = _amountController.text;
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final available = double.tryParse(_availableBalance) ?? 0;
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final transferAmount = double.tryParse(amount) ?? 0;
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if (transferAmount <= 0) {
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_showSnackBar('請輸入有效的劃轉金額');
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return;
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}
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if (transferAmount > available) {
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_showSnackBar('餘額不足');
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return;
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}
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setState(() => _isLoading = true);
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try {
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final response = await context.read<AssetProvider>().transfer(
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direction: _direction,
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amount: amount,
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);
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if (mounted) {
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if (response.success) {
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_amountController.clear();
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_showSnackBar('劃轉成功');
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await Future.delayed(const Duration(milliseconds: 500));
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if (mounted) Navigator.of(context).pop(true);
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} else {
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_showSnackBar(response.message ?? '劃轉失敗');
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}
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}
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} finally {
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if (mounted) setState(() => _isLoading = false);
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}
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}
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void _showSnackBar(String message) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(message),
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behavior: SnackBarBehavior.floating,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
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),
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);
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}
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void _setQuickAmount(double percent) {
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final available = double.tryParse(_availableBalance) ?? 0;
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final amount = available * percent;
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// 向下截斷到2位小數，避免四捨五入超出餘額
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_amountController.text =
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((amount * 100).truncateToDouble() / 100).toStringAsFixed(2);
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// Trigger haptic feedback
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HapticFeedback.selectionClick();
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}
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void _toggleDirection() {
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HapticFeedback.mediumImpact();
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setState(() => _direction = _direction == 1 ? 2 : 1);
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}
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// ============================================
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// 构建 UI
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// ============================================
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@override
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Widget build(BuildContext context) {
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final colorScheme = Theme.of(context).colorScheme;
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return Scaffold(
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backgroundColor: colorScheme.surface,
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appBar: AppBar(
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backgroundColor: Colors.transparent,
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elevation: 0,
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scrolledUnderElevation: 0,
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leading: IconButton(
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icon: Icon(LucideIcons.arrowLeft,
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color: colorScheme.onSurface, size: 20),
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onPressed: () => Navigator.of(context).pop(),
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),
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title: Text(
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'賬戶劃轉',
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style: AppTextStyles.headlineLarge(context).copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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centerTitle: true,
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),
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body: Consumer<AssetProvider>(
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builder: (context, provider, _) {
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return SingleChildScrollView(
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padding: const EdgeInsets.fromLTRB(
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AppSpacing.md, AppSpacing.xs, AppSpacing.md, AppSpacing.xl),
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child: Column(
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children: [
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_buildTransferCard(colorScheme),
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const SizedBox(height: AppSpacing.md),
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_buildAmountSection(colorScheme),
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const SizedBox(height: AppSpacing.md),
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_buildTips(colorScheme),
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const SizedBox(height: AppSpacing.xl),
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_buildConfirmButton(colorScheme),
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const SizedBox(height: AppSpacing.lg),
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],
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),
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);
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},
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),
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);
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}
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// ============================================
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// 划转方向卡片
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// ============================================
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Widget _buildTransferCard(ColorScheme colorScheme) {
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return Container(
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width: double.infinity,
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decoration: BoxDecoration(
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color: colorScheme.surface,
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borderRadius: BorderRadius.circular(20),
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border: Border.all(
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color: colorScheme.outlineVariant.withValues(alpha: 0.5),
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width: 1,
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),
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),
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child: Stack(
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clipBehavior: Clip.none,
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children: [
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Column(
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children: [
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// From
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Padding(
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padding:
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const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Row(
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children: [
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Text(
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'从',
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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),
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),
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const SizedBox(width: 8),
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Text(
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_fromLabel,
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style:
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AppTextStyles.bodyLarge(context).copyWith(
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fontWeight: FontWeight.w500,
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),
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),
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],
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),
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Text(
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_fromBalance,
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style: AppTextStyles.bodyLarge(context).copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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],
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),
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),
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Divider(
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height: 1,
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thickness: 1,
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color: colorScheme.outlineVariant.withValues(alpha: 0.5),
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),
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// To
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Padding(
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padding:
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const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Row(
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children: [
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Text(
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'到',
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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),
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),
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const SizedBox(width: 8),
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Text(
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_toLabel,
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style:
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AppTextStyles.bodyLarge(context).copyWith(
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fontWeight: FontWeight.w500,
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),
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),
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],
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),
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Text(
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_toBalance,
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style: AppTextStyles.bodyLarge(context).copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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],
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),
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),
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],
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),
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// 交换按钮 - 右侧贴分割线
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Positioned(
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right: 12,
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top: 20,
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child: GestureDetector(
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onTap: _toggleDirection,
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child: Container(
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width: 28,
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height: 28,
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decoration: BoxDecoration(
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color: colorScheme.surface,
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shape: BoxShape.circle,
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border: Border.all(
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color: colorScheme.outlineVariant,
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width: 1,
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),
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),
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child: Icon(
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LucideIcons.arrowUpDown,
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size: 14,
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color: colorScheme.onSurfaceVariant,
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),
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),
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),
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),
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],
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),
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);
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}
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// ============================================
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// 金额输入区域
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// ============================================
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Widget _buildAmountSection(ColorScheme colorScheme) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题行
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'劃轉金額',
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style: AppTextStyles.bodyMedium(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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fontWeight: FontWeight.w500,
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),
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),
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GestureDetector(
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onTap: () => _setQuickAmount(1.0),
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child: Text(
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'全部',
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style: AppTextStyles.bodyMedium(context).copyWith(
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color: colorScheme.secondary,
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fontWeight: FontWeight.w500,
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),
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),
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),
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],
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),
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const SizedBox(height: 12),
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// 金额输入框
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Container(
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width: double.infinity,
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height: 52,
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decoration: BoxDecoration(
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color: colorScheme.surface,
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borderRadius: BorderRadius.circular(14),
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border: Border.all(
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color: _focusNode.hasFocus
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? colorScheme.secondary
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: colorScheme.outlineVariant.withValues(alpha: 0.5),
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width: 1,
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),
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),
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: Row(
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children: [
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Expanded(
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child: TextField(
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controller: _amountController,
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focusNode: _focusNode,
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keyboardType:
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const TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(
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RegExp(r'^\d*\.?\d{0,8}')),
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],
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style: TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.w600,
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color: colorScheme.onSurface,
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),
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decoration: InputDecoration(
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hintText: '0.00',
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hintStyle: TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.w600,
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color: colorScheme.onSurfaceVariant.withValues(alpha: 0.3),
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),
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border: InputBorder.none,
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contentPadding: EdgeInsets.zero,
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isDense: true,
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),
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onChanged: (_) => setState(() {}),
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),
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),
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Text(
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'USDT',
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style: AppTextStyles.bodyMedium(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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fontWeight: FontWeight.w500,
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),
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),
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],
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),
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),
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const SizedBox(height: 10),
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// 可用余额
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'可用餘額',
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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),
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),
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Text(
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'$_availableBalance USDT',
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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fontWeight: FontWeight.w500,
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),
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),
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],
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),
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const SizedBox(height: 12),
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// 百分比按钮
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Row(
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children: [
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_buildPercentButton('25%', 0.25, colorScheme),
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const SizedBox(width: 8),
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_buildPercentButton('50%', 0.50, colorScheme),
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const SizedBox(width: 8),
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_buildPercentButton('75%', 0.75, colorScheme),
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const SizedBox(width: 8),
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_buildPercentButton('100%', 1.0, colorScheme),
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],
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),
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],
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);
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}
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Widget _buildPercentButton(
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String label, double percent, ColorScheme colorScheme) {
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return Expanded(
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child: GestureDetector(
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onTap: () => _setQuickAmount(percent),
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child: Container(
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height: 34,
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decoration: BoxDecoration(
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color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.5),
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borderRadius: BorderRadius.circular(8),
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),
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child: Center(
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child: Text(
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label,
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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fontWeight: FontWeight.w500,
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),
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),
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),
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),
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),
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);
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}
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// ============================================
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// 提示文字
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// ============================================
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Widget _buildTips(ColorScheme colorScheme) {
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 4),
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child: Row(
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children: [
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Icon(LucideIcons.info,
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size: 13, color: colorScheme.onSurfaceVariant),
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const SizedBox(width: 6),
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Text(
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'劃轉即時到賬，無需手續費',
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style: AppTextStyles.bodySmall(context).copyWith(
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color: colorScheme.onSurfaceVariant,
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),
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),
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],
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),
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);
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}
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// ============================================
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// 确认按钮
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// ============================================
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Widget _buildConfirmButton(ColorScheme colorScheme) {
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final hasAmount = _amountController.text.isNotEmpty &&
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double.tryParse(_amountController.text) != null &&
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double.parse(_amountController.text) > 0;
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return SizedBox(
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width: double.infinity,
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height: 48,
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child: ElevatedButton(
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onPressed: _isLoading ? null : _doTransfer,
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style: ElevatedButton.styleFrom(
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backgroundColor: hasAmount
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? colorScheme.onSurface
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: colorScheme.surfaceContainerHighest,
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foregroundColor: hasAmount
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? colorScheme.surface
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: colorScheme.onSurfaceVariant,
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disabledBackgroundColor: colorScheme.surfaceContainerHighest,
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disabledForegroundColor: colorScheme.onSurfaceVariant,
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elevation: 0,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(14),
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),
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),
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child: _isLoading
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? SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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valueColor: AlwaysStoppedAnimation<Color>(
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colorScheme.onSurfaceVariant,
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),
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),
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)
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: Text(
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'確認劃轉',
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style: TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.w600,
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),
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),
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),
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);
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}
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// ============================================
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// Helpers
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// ============================================
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String _formatBalance(String balance) {
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final val = double.tryParse(balance);
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if (val == null) return '0.00';
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return val.toStringAsFixed(2);
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}
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}
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