import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_remix/flutter_remix.dart';
import 'package:go_router/go_router.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:url_launcher/url_launcher_string.dart';

import '../../../common/config/app_h5_urls.dart';
import '../../../common/router/app_router.dart';
import '../../../common/theme/app_text.dart';
import '../../../common/theme/spacing.dart';
import '../../../common/theme/theme_controller.dart';
import '../../../common/widgets/adaptive.dart';
import '../../../common/widgets/app_toast.dart';
import '../../../common/widgets/circle_back_button.dart';
import '../../auth/application/auth_controller.dart';
import '../../auth/data/auth_models.dart';
import '../../profile/application/profile_settings_controller.dart';
import '../../profile/data/profile_models.dart';

class SettingsPage extends HookConsumerWidget {
  const SettingsPage({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final cs = ShadTheme.of(context).colorScheme;
    final themeMode = ref.watch(themeModeControllerProvider);
    final profileSettings = ref.watch(profileSettingsControllerProvider);
    final authAsync = ref.watch(authProvider);
    final loggedIn = authAsync.valueOrNull is LoggedInAuthState;
    final contactDebugTapCount = useState(0);
    final contactLastTapAt = useRef<DateTime?>(null);

    return Scaffold(
      backgroundColor: cs.background,
      appBar: AppBar(
        backgroundColor: cs.background,
        surfaceTintColor: Colors.transparent,
        elevation: 0,
        scrolledUnderElevation: 0,
        centerTitle: true,
        title: Text(
          '设置',
          style: TextStyle(
            fontSize: 17,
            fontWeight: FontWeight.w700,
            color: cs.foreground,
          ),
        ),
        leading: const CircleBackButton(),
      ),
      body: ListView(
        padding: Adaptive.screenPadding(context, top: 8, bottom: 32),
        children: [
          const _Section('外观'),
          _ThemeSegmentCard(
            themeMode: themeMode,
            onChanged: (mode) =>
                ref.read(themeModeControllerProvider.notifier).set(mode),
          ),

          const SizedBox(height: 22),
          const _Section('资产参数'),
          _Card(
            children: [
              _SwitchRow(
                title: '隐藏金额',
                subtitle: '在资产页和持仓列表中隐藏金额信息',
                value: profileSettings.amountHidden,
                onChanged: (_) => ref
                    .read(profileSettingsControllerProvider.notifier)
                    .toggleAmountHidden(),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.line_chart_line,
                label: '涨跌颜色',
                trailing: profileSettings.priceColorMode.label,
                onTap: () => _showPriceColorSheet(context, ref),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.coins_line,
                label: '纯度系数',
                trailing: '${profileSettings.purityPresets.length} 项',
                onTap: () => _showPuritySheet(context, profileSettings),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.exchange_box_line,
                label: '回收折扣',
                trailing: '已设置',
                onTap: () => _showRecycleSheet(context, profileSettings),
              ),
            ],
          ),

          const SizedBox(height: 22),
          const _Section('备份'),
          _Card(
            children: [
              _NavRow(
                icon: FlutterRemix.download_2_line,
                label: '本地导出备份',
                trailing: '导出',
                onTap: () => _showLocalBackupSheet(context),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.cloud_line,
                label: '云备份',
                trailing: '占位',
                onTap: () => _showCloudBackupSheet(context),
              ),
            ],
          ),

          const SizedBox(height: 22),
          const _Section('工具'),
          _Card(
            children: [
              _NavRow(
                icon: FlutterRemix.layout_grid_line,
                label: '桌面小组件',
                trailing: '占位',
                onTap: () => _showWidgetSheet(context),
              ),
              if (kDebugMode) ...[
                Divider(height: 1, thickness: 1, color: cs.border),
                _NavRow(
                  icon: Icons.bug_report_outlined,
                  label: '调试工具',
                  onTap: () => context.push(AppRoutes.debug),
                ),
              ],
            ],
          ),

          const SizedBox(height: 22),
          const _Section('法律'),
          _Card(
            children: [
              _NavRow(
                icon: FlutterRemix.file_list_3_line,
                label: '用户协议',
                onTap: () => launchUrlString(
                  AppH5UrlsHelper.withCacheBuster(AppH5Urls.userProtocolUrl),
                  mode: LaunchMode.inAppBrowserView,
                ),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.shield_check_line,
                label: '隐私政策',
                onTap: () => launchUrlString(
                  AppH5UrlsHelper.withCacheBuster(AppH5Urls.privacyUrl),
                  mode: LaunchMode.inAppBrowserView,
                ),
              ),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.alert_line,
                label: '免责声明',
                onTap: () => _showDisclaimerSheet(context),
              ),
            ],
          ),

          if (loggedIn) ...[
            const SizedBox(height: 22),
            const _Section('账户'),
            _Card(
              children: [
                _NavRow(
                  icon: FlutterRemix.logout_box_r_line,
                  label: '退出登录',
                  onTap: () => _confirmLogout(context, ref),
                ),
                Divider(height: 1, thickness: 1, color: cs.border),
                _NavRow(
                  icon: FlutterRemix.delete_bin_line,
                  label: '注销账号',
                  destructive: true,
                  onTap: () => context.push(AppRoutes.deleteAccount),
                ),
              ],
            ),
          ],

          const SizedBox(height: 22),
          const _Section('关于'),
          _Card(
            children: [
              const _AboutRow(),
              Divider(height: 1, thickness: 1, color: cs.border),
              _NavRow(
                icon: FlutterRemix.mail_line,
                label: '联系我们',
                trailing: 'business@hnsiderui.cn',
                onTap: () {
                  final now = DateTime.now();
                  final lastTapAt = contactLastTapAt.value;
                  if (lastTapAt == null ||
                      now.difference(lastTapAt) >
                          const Duration(milliseconds: 500)) {
                    contactDebugTapCount.value = 0;
                  }
                  contactLastTapAt.value = now;
                  contactDebugTapCount.value += 1;
                  if (contactDebugTapCount.value >= 10) {
                    contactDebugTapCount.value = 0;
                    contactLastTapAt.value = null;
                    context.push(AppRoutes.debug);
                  }
                },
              ),
            ],
          ),
          const SizedBox(height: 14),
          _RiskFooter(cs: cs),
        ],
      ),
    );
  }

  Future<void> _confirmLogout(BuildContext context, WidgetRef ref) async {
    final cs = ShadTheme.of(context).colorScheme;
    final ok = await showModalBottomSheet<bool>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '退出登录',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '确定要退出登录吗？',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 22),
              _LogoutSheetButton(
                label: '退出',
                primary: true,
                onTap: () => Navigator.of(ctx).pop(true),
              ),
              const SizedBox(height: 12),
              _LogoutSheetButton(
                label: '取消',
                primary: false,
                onTap: () => Navigator.of(ctx).pop(false),
              ),
            ],
          ),
        ),
      ),
    );
    if (ok == true && context.mounted) {
      await ref.read(authProvider.notifier).logout();
    }
  }

  Future<void> _showPriceColorSheet(BuildContext context, WidgetRef ref) async {
    final cs = ShadTheme.of(context).colorScheme;
    final current = ref.read(profileSettingsControllerProvider).priceColorMode;
    final selected = await showModalBottomSheet<PriceColorMode>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '涨跌颜色',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '选择行情上涨和下跌的配色方案。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 18),
              _ChoiceButton(
                label: PriceColorMode.redUpGreenDown.label,
                selected: current == PriceColorMode.redUpGreenDown,
                onTap: () => Navigator.of(ctx).pop(PriceColorMode.redUpGreenDown),
              ),
              const SizedBox(height: 12),
              _ChoiceButton(
                label: PriceColorMode.greenUpRedDown.label,
                selected: current == PriceColorMode.greenUpRedDown,
                onTap: () => Navigator.of(ctx).pop(PriceColorMode.greenUpRedDown),
              ),
            ],
          ),
        ),
      ),
    );
    if (selected != null && context.mounted) {
      ref.read(profileSettingsControllerProvider.notifier).setPriceColorMode(
            selected,
          );
    }
  }

  Future<void> _showPuritySheet(
    BuildContext context,
    ProfileSettings settings,
  ) async {
    final cs = ShadTheme.of(context).colorScheme;
    await showModalBottomSheet<void>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '纯度系数',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '用于估值换算的本地纯度预设。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 16),
              for (final entry in settings.purityPresets.entries) ...[
                _ValueRow(
                  label: entry.key,
                  value: '${(entry.value * 100).toStringAsFixed(2)}%',
                ),
                if (entry.key != settings.purityPresets.keys.last) ...[
                  const SizedBox(height: 10),
                ],
              ],
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '知道了',
                onTap: () => Navigator.of(ctx).pop(),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _showRecycleSheet(
    BuildContext context,
    ProfileSettings settings,
  ) async {
    final cs = ShadTheme.of(context).colorScheme;
    await showModalBottomSheet<void>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '回收折扣',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '用于计算金、铂、银的回收参考值。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 16),
              for (final entry in settings.recycleDiscounts.entries) ...[
                _ValueRow(
                  label: entry.key.label,
                  value: '${(entry.value * 100).toStringAsFixed(0)}%',
                ),
                if (entry.key != settings.recycleDiscounts.keys.last) ...[
                  const SizedBox(height: 10),
                ],
              ],
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '知道了',
                onTap: () => Navigator.of(ctx).pop(),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _showLocalBackupSheet(BuildContext context) async {
    final cs = ShadTheme.of(context).colorScheme;
    final ok = await showModalBottomSheet<bool>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '本地导出备份',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '将当前持仓、偏好设置和 mock 账号状态导出到本地文件。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '导出备份',
                onTap: () => Navigator.of(ctx).pop(true),
              ),
              const SizedBox(height: 12),
              _SheetSecondaryButton(
                label: '取消',
                onTap: () => Navigator.of(ctx).pop(false),
              ),
            ],
          ),
        ),
      ),
    );
    if (ok == true && context.mounted) {
      toastInfo(msg: '已导出本地备份（mock）');
    }
  }

  Future<void> _showCloudBackupSheet(BuildContext context) async {
    final cs = ShadTheme.of(context).colorScheme;
    await showModalBottomSheet<void>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '云备份',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '后续会接入云同步与多端恢复，这里先保留入口。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '知道了',
                onTap: () => Navigator.of(ctx).pop(),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _showWidgetSheet(BuildContext context) async {
    final cs = ShadTheme.of(context).colorScheme;
    await showModalBottomSheet<void>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '桌面小组件',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '桌面行情小组件正在整理中，先保留入口。',
                style: TextStyle(fontSize: 13, color: cs.mutedForeground),
              ),
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '知道了',
                onTap: () => Navigator.of(ctx).pop(),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _showDisclaimerSheet(BuildContext context) async {
    final cs = ShadTheme.of(context).colorScheme;
    await showModalBottomSheet<void>(
      context: context,
      backgroundColor: cs.card,
      barrierColor: Colors.black.withValues(alpha: 0.5),
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          top: Radius.circular(Spacing.radiusCard),
        ),
      ),
      builder: (ctx) => SafeArea(
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Center(
                child: Container(
                  width: 38,
                  height: 4,
                  margin: const EdgeInsets.only(bottom: 16),
                  decoration: BoxDecoration(
                    color: cs.border,
                    borderRadius: BorderRadius.circular(9999),
                  ),
                ),
              ),
              Text(
                '免责声明',
                style: TextStyle(
                  fontSize: 19,
                  fontWeight: FontWeight.w700,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '金值提供的价格、资讯和估值均为本地 mock 数据，仅用于产品原型验证，不构成投资建议。',
                style: TextStyle(
                  fontSize: 13,
                  height: 1.55,
                  color: cs.mutedForeground,
                ),
              ),
              const SizedBox(height: 18),
              _SheetPrimaryButton(
                label: '知道了',
                onTap: () => Navigator.of(ctx).pop(),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _Section extends StatelessWidget {
  const _Section(this.title);

  final String title;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return Padding(
      padding: const EdgeInsets.only(bottom: 10),
      child: Text(
        title,
        style: TextStyle(
          fontSize: 14,
          fontWeight: FontWeight.w700,
          color: cs.foreground,
        ),
      ),
    );
  }
}

class _Card extends StatelessWidget {
  const _Card({required this.children});

  final List<Widget> children;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return Container(
      decoration: BoxDecoration(
        color: cs.card,
        border: Border.all(color: cs.border),
        borderRadius: BorderRadius.circular(Spacing.radiusCard),
      ),
      clipBehavior: Clip.antiAlias,
      child: Column(
        children: [
          for (var i = 0; i < children.length; i++) ...[
            if (i > 0) Divider(height: 1, thickness: 1, color: cs.border),
            children[i],
          ],
        ],
      ),
    );
  }
}

class _ThemeSegmentCard extends StatelessWidget {
  const _ThemeSegmentCard({required this.themeMode, required this.onChanged});

  final ThemeMode themeMode;
  final ValueChanged<ThemeMode> onChanged;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    final options = <(ThemeMode, String, IconData)>[
      (ThemeMode.system, '跟随系统', Icons.brightness_auto_outlined),
      (ThemeMode.light, '浅色', Icons.light_mode_outlined),
      (ThemeMode.dark, '深色', Icons.dark_mode_outlined),
    ];
    return Container(
      padding: const EdgeInsets.all(4),
      decoration: BoxDecoration(
        color: cs.secondary,
        border: Border.all(color: cs.border),
        borderRadius: BorderRadius.circular(12),
      ),
      child: Row(
        children: [
          for (final opt in options)
            Expanded(
              child: Padding(
                padding: EdgeInsets.only(
                  left: opt == options.first ? 0 : 2,
                  right: opt == options.last ? 0 : 2,
                ),
                child: _ThemeSegmentButton(
                  label: opt.$2,
                  icon: opt.$3,
                  selected: themeMode == opt.$1,
                  onTap: () => onChanged(opt.$1),
                ),
              ),
            ),
        ],
      ),
    );
  }
}

class _ThemeSegmentButton extends StatelessWidget {
  const _ThemeSegmentButton({
    required this.label,
    required this.icon,
    required this.selected,
    required this.onTap,
  });

  final String label;
  final IconData icon;
  final bool selected;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    final fg = selected ? cs.foreground : cs.mutedForeground;
    return Material(
      color: selected ? cs.background : Colors.transparent,
      borderRadius: BorderRadius.circular(10),
      child: InkWell(
        onTap: onTap,
        borderRadius: BorderRadius.circular(10),
        child: Container(
          height: 44,
          alignment: Alignment.center,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(10),
            boxShadow: selected
                ? [
                    const BoxShadow(
                      color: Color(0x0A000000),
                      blurRadius: 10,
                      offset: Offset(0, 2),
                    ),
                  ]
                : null,
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.center,
            mainAxisSize: MainAxisSize.min,
            children: [
              Icon(icon, size: 17, color: fg),
              const SizedBox(width: 8),
              Text(
                label,
                style: TextStyle(
                  fontSize: 15,
                  fontWeight: FontWeight.w600,
                  color: fg,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _SwitchRow extends StatelessWidget {
  const _SwitchRow({
    required this.title,
    required this.subtitle,
    required this.value,
    required this.onChanged,
  });

  final String title;
  final String subtitle;
  final bool value;
  final ValueChanged<bool> onChanged;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 18),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  title,
                  style: TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.w600,
                    color: cs.foreground,
                  ),
                ),
                const SizedBox(height: 6),
                Text(
                  subtitle,
                  style: AppText.meta.copyWith(
                    fontSize: 13,
                    color: cs.mutedForeground,
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(width: 16),
          ShadSwitch(
            value: value,
            onChanged: onChanged,
            checkedTrackColor: cs.primary,
            thumbColor: cs.background,
            width: 44,
            height: 26,
            margin: 2,
          ),
        ],
      ),
    );
  }
}

class _NavRow extends StatelessWidget {
  const _NavRow({
    required this.icon,
    required this.label,
    this.trailing,
    this.onTap,
    this.destructive = false,
  });

  final IconData icon;
  final String label;
  final String? trailing;
  final VoidCallback? onTap;
  final bool destructive;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    final color = destructive ? cs.destructive : cs.foreground;
    return GestureDetector(
      onTap: onTap,
      behavior: HitTestBehavior.opaque,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 15),
        child: Row(
          children: [
            SizedBox(width: 24, child: Icon(icon, size: 20, color: color)),
            const SizedBox(width: 13),
            Expanded(
              child: Text(label, style: TextStyle(fontSize: 15, color: color)),
            ),
            if (trailing != null)
              Text(
                trailing!,
                style: AppText.meta.copyWith(
                  fontSize: 13,
                  color: cs.mutedForeground,
                ),
              ),
            if (onTap != null && trailing == null)
              Icon(
                FlutterRemix.arrow_right_s_line,
                size: 20,
                color: cs.mutedForeground,
              ),
          ],
        ),
      ),
    );
  }
}

class _AboutRow extends StatelessWidget {
  const _AboutRow();

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return FutureBuilder<PackageInfo>(
      future: PackageInfo.fromPlatform(),
      builder: (context, snap) {
        final v = snap.hasData
            ? 'v${snap.data!.version}+${snap.data!.buildNumber}'
            : '';
        return Padding(
          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 15),
          child: Row(
            children: [
              SizedBox(
                width: 24,
                child: Icon(
                  FlutterRemix.information_line,
                  size: 20,
                  color: cs.foreground,
                ),
              ),
              const SizedBox(width: 13),
              Expanded(
                child: Text(
                  '金值',
                  style: TextStyle(fontSize: 15, color: cs.foreground),
                ),
              ),
              Text(
                v,
                style: AppText.meta.copyWith(
                  fontSize: 13,
                  color: cs.mutedForeground,
                ),
              ),
            ],
          ),
        );
      },
    );
  }
}

class _RiskFooter extends StatelessWidget {
  const _RiskFooter({required this.cs});

  final ShadColorScheme cs;

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.fromLTRB(16, 14, 16, 14),
      decoration: BoxDecoration(
        color: cs.card,
        border: Border.all(color: cs.border),
        borderRadius: BorderRadius.circular(Spacing.radiusCard),
      ),
      child: Text(
        '风险提示 · 数据来源 · 免责\n价格、资讯与估值均为本地 mock 数据，仅用于产品原型验证，不构成投资建议。',
        style: AppText.meta.copyWith(
          fontSize: 12,
          color: cs.mutedForeground,
          height: 1.65,
        ),
      ),
    );
  }
}

class _ChoiceButton extends StatelessWidget {
  const _ChoiceButton({
    required this.label,
    required this.selected,
    required this.onTap,
  });

  final String label;
  final bool selected;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return GestureDetector(
      onTap: onTap,
      behavior: HitTestBehavior.opaque,
      child: Container(
        width: double.infinity,
        height: 52,
        alignment: Alignment.center,
        decoration: BoxDecoration(
          color: selected ? cs.primary : cs.secondary,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(
            color: selected ? cs.primary : cs.border,
          ),
        ),
        child: Text(
          label,
          style: TextStyle(
            fontSize: 16,
            fontWeight: FontWeight.w600,
            color: selected ? cs.primaryForeground : cs.foreground,
          ),
        ),
      ),
    );
  }
}

class _SheetPrimaryButton extends StatelessWidget {
  const _SheetPrimaryButton({required this.label, required this.onTap});

  final String label;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return GestureDetector(
      behavior: HitTestBehavior.opaque,
      onTap: onTap,
      child: Container(
        width: double.infinity,
        height: 52,
        alignment: Alignment.center,
        decoration: BoxDecoration(
          color: cs.primary,
          borderRadius: BorderRadius.circular(12),
        ),
        child: Text(
          label,
          style: TextStyle(
            fontSize: 16,
            fontWeight: FontWeight.w600,
            color: cs.primaryForeground,
          ),
        ),
      ),
    );
  }
}

class _SheetSecondaryButton extends StatelessWidget {
  const _SheetSecondaryButton({required this.label, required this.onTap});

  final String label;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return GestureDetector(
      behavior: HitTestBehavior.opaque,
      onTap: onTap,
      child: Container(
        width: double.infinity,
        height: 52,
        alignment: Alignment.center,
        decoration: BoxDecoration(
          color: cs.secondary,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: cs.border),
        ),
        child: Text(
          label,
          style: TextStyle(
            fontSize: 16,
            fontWeight: FontWeight.w600,
            color: cs.foreground,
          ),
        ),
      ),
    );
  }
}

class _ValueRow extends StatelessWidget {
  const _ValueRow({required this.label, required this.value});

  final String label;
  final String value;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return Row(
      children: [
        Expanded(
          child: Text(
            label,
            style: TextStyle(fontSize: 15, color: cs.foreground),
          ),
        ),
        Text(
          value,
          style: TextStyle(fontSize: 13, color: cs.mutedForeground),
        ),
      ],
    );
  }
}

class _LogoutSheetButton extends StatelessWidget {
  const _LogoutSheetButton({
    required this.label,
    required this.primary,
    required this.onTap,
  });

  final String label;
  final bool primary;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    final cs = ShadTheme.of(context).colorScheme;
    return GestureDetector(
      onTap: onTap,
      behavior: HitTestBehavior.opaque,
      child: Container(
        width: double.infinity,
        height: 52,
        alignment: Alignment.center,
        decoration: BoxDecoration(
          color: primary ? cs.primary : cs.secondary,
          borderRadius: BorderRadius.circular(12),
          border: primary ? null : Border.all(color: cs.border),
        ),
        child: Text(
          label,
          style: TextStyle(
            fontSize: 16,
            fontWeight: FontWeight.w600,
            color: primary ? cs.primaryForeground : cs.foreground,
          ),
        ),
      ),
    );
  }
}