Files
video/app/lib/screens/payment/usdt_pay_screen.dart
T
2026-10-15 20:36:59 +08:00

291 lines
9.4 KiB
Dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../core/theme/app_theme.dart';
import '../../providers/payment_provider.dart';
import '../../providers/auth_provider.dart';
import '../../services/payment_service.dart';
import '../../services/user_service.dart';
import '../feed/widgets/feed_overlays.dart';
/// USDT 支付页:金额(含尾差)/ 收款地址 / 网络 / 倒计时 / 轮询到账 / 取消订单
class UsdtPayScreen extends ConsumerStatefulWidget {
const UsdtPayScreen({super.key, required this.order});
final RechargeOrderInfo order;
@override
ConsumerState<UsdtPayScreen> createState() => _UsdtPayScreenState();
}
class _UsdtPayScreenState extends ConsumerState<UsdtPayScreen> {
Timer? _ticker;
Duration _remain = Duration.zero;
bool _resultHandled = false;
@override
void initState() {
super.initState();
_remain = _calcRemain();
_ticker = Timer.periodic(const Duration(seconds: 1), (_) {
final r = _calcRemain();
if (!mounted) return;
setState(() => _remain = r);
});
}
Duration _calcRemain() {
final expire = DateTime.tryParse(widget.order.expireAt);
if (expire == null) return Duration.zero;
final diff = expire.difference(DateTime.now());
return diff.isNegative ? Duration.zero : diff;
}
@override
void dispose() {
_ticker?.cancel();
ref.read(orderPollProvider(widget.order).notifier).stop();
super.dispose();
}
@override
Widget build(BuildContext context) {
final poll = ref.watch(orderPollProvider(widget.order));
final order = widget.order;
// 轮询结果处理(仅一次)
if (!_resultHandled && poll.status != OrderPollStatus.polling) {
_resultHandled = true;
WidgetsBinding.instance.addPostFrameCallback((_) => _onResult(poll));
}
final mm = _remain.inMinutes.remainder(60).toString().padLeft(2, '0');
final ss = _remain.inSeconds.remainder(60).toString().padLeft(2, '0');
return Scaffold(
appBar: AppBar(title: const Text('USDT 支付')),
body: ListView(
padding: const EdgeInsets.all(16),
children: [
// 金额卡
Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: AppColors.surface,
borderRadius: BorderRadius.circular(12),
),
child: Column(
children: [
const Text('请精确转账以下金额(含尾差用于订单匹配)',
style: TextStyle(
color: AppColors.textSecondary, fontSize: 12)),
const SizedBox(height: 10),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
order.usdtAmount ?? '-',
style: const TextStyle(
fontSize: 34,
fontWeight: FontWeight.w800,
color: AppColors.gold),
),
const SizedBox(width: 6),
const Padding(
padding: EdgeInsets.only(bottom: 6),
child: Text('USDT',
style: TextStyle(
color: AppColors.textSecondary, fontSize: 14)),
),
],
),
const SizedBox(height: 6),
Text(
'≈ ¥${order.amountYuan}(汇率 ${order.usdtRate ?? '-'})· 到账 ${order.points} 积分',
style: const TextStyle(
color: AppColors.textSecondary, fontSize: 12),
),
],
),
),
const SizedBox(height: 12),
// 收款信息
_InfoRow(
label: '收款地址',
value: order.receiveAddress ?? '-',
onCopy: () => _copy(order.receiveAddress, '地址已复制'),
),
_InfoRow(label: '网络', value: order.network ?? 'TRC20'),
_InfoRow(label: '订单号', value: order.orderNo),
const SizedBox(height: 12),
// 倒计时 + 轮询状态
Container(
padding: const EdgeInsets.all(14),
decoration: BoxDecoration(
color: AppColors.surface,
borderRadius: BorderRadius.circular(12),
),
child: Row(
children: [
const SizedBox(
width: 18,
height: 18,
child: CircularProgressIndicator(
strokeWidth: 2, color: AppColors.primary),
),
const SizedBox(width: 10),
Expanded(
child: Text(
_remain == Duration.zero
? '订单已过期,请重新下单'
: '等待链上确认(19 个区块)… 剩余 $mm:$ss',
style: const TextStyle(fontSize: 13),
),
),
],
),
),
const SizedBox(height: 16),
const Text(
'注意事项:\n'
'· 请务必按显示金额精确转账,金额不符将无法自动到账\n'
'· 仅支持 TRC20 网络,其他网络转账无法找回\n'
'· 满 19 个区块确认后积分自动到账',
style: TextStyle(color: AppColors.textWeak, fontSize: 12, height: 1.6),
),
const SizedBox(height: 20),
TextButton(
onPressed: () => _cancel(context),
child: const Text('取消订单',
style: TextStyle(color: AppColors.textSecondary)),
),
],
),
);
}
void _copy(String? text, String tip) {
if (text == null || text.isEmpty) return;
Clipboard.setData(ClipboardData(text: text));
showTopToast(context, tip);
}
void _refreshUser() async {
// 支付成功后刷新全局用户信息(积分余额)
try {
final user = await UserService.fetchMe();
await ref.read(authProvider.notifier).onLoginSuccess(user);
} catch (_) {}
}
Future<void> _cancel(BuildContext context) async {
final ok = await showDialog<bool>(
context: context,
builder: (ctx) => AlertDialog(
backgroundColor: AppColors.surface,
title: const Text('取消订单', style: TextStyle(fontSize: 16)),
content: const Text('取消后该笔订单将关闭,是否继续?'),
actions: [
TextButton(
onPressed: () => Navigator.pop(ctx, false),
child: const Text('继续支付'),
),
TextButton(
onPressed: () => Navigator.pop(ctx, true),
child:
const Text('取消订单', style: TextStyle(color: AppColors.primary)),
),
],
),
);
if (ok != true || !context.mounted) return;
try {
await ref.read(orderPollProvider(widget.order).notifier).cancel();
} catch (_) {
if (context.mounted) showTopToast(context, '取消失败,请稍后重试');
}
}
void _onResult(OrderPollState poll) {
if (!mounted) return;
if (poll.status == OrderPollStatus.paid) {
_refreshUser();
showDialog<void>(
context: context,
barrierDismissible: false,
builder: (ctx) => AlertDialog(
backgroundColor: AppColors.surface,
title: const Text('充值成功', style: TextStyle(fontSize: 16)),
content: Text(
'已到账 ${widget.order.points} 积分,当前余额 ${poll.walletPoints ?? '-'}'),
actions: [
TextButton(
onPressed: () {
Navigator.pop(ctx);
context.pop(true); // 返回充值页并标记已支付
},
child: const Text('确定'),
),
],
),
);
} else {
showTopToast(
context, poll.status == OrderPollStatus.timeout ? '查询超时,请稍后在钱包查看' : '订单已关闭');
context.pop();
}
}
}
class _InfoRow extends StatelessWidget {
const _InfoRow({required this.label, required this.value, this.onCopy});
final String label;
final String value;
final VoidCallback? onCopy;
@override
Widget build(BuildContext context) {
return Container(
margin: const EdgeInsets.only(bottom: 1),
padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
color: AppColors.surface,
child: Row(
children: [
SizedBox(
width: 64,
child: Text(label,
style: const TextStyle(
color: AppColors.textSecondary, fontSize: 13)),
),
Expanded(
child: Text(
value,
style: const TextStyle(fontSize: 13),
overflow: TextOverflow.ellipsis,
),
),
if (onCopy != null)
GestureDetector(
onTap: onCopy,
child: const Padding(
padding: EdgeInsets.only(left: 8),
child:
Icon(Icons.copy, size: 16, color: AppColors.textSecondary),
),
),
],
),
);
}
}