import 'dart:async';
import '../../core/utils/dialog_util.dart';
import 'package:dio/dio.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/auth/auth_state.dart';
import '../../core/config/app_config.dart';
import '../../core/config/app_info.dart';
import '../../core/responsive/responsive.dart';
import '../../core/theme/app_theme.dart';
import '../../models/number_rule.dart';
import '../../models/user.dart';
import '../../providers/license_provider.dart';
import '../../providers/number_rule_provider.dart';
import '../../providers/user_provider.dart';
import '../../providers/shop_provider.dart';
import '../../models/shop.dart';

class SettingsScreen extends ConsumerStatefulWidget {
  const SettingsScreen({super.key});

  @override
  ConsumerState<SettingsScreen> createState() => _SettingsScreenState();
}

class _SettingsScreenState extends ConsumerState<SettingsScreen> {
  // System params local state (UI only, no backend yet)
  String _sysName = '酒库管理系统';
  String _sysCurrency = '人民币（CNY）';
  String _sysDateFormat = 'YYYY-MM-DD';
  String _sysTimezone = 'Asia/Shanghai (UTC+8)';
  bool _requireStockInApproval = true;
  bool _requireStockOutApproval = true;
  bool _allowOverstock = false;

  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
      length: 6,
      child: Column(
        children: [
          Container(
            color: AppTheme.surface,
            child: const TabBar(
              isScrollable: true,
              labelColor: AppTheme.primary,
              unselectedLabelColor: AppTheme.textSecondary,
              indicatorColor: AppTheme.primary,
              indicatorWeight: 2,
              labelStyle:
                  TextStyle(fontSize: 14, fontWeight: FontWeight.w500),
              tabs: [
                Tab(text: '酒行信息'),
                Tab(text: '用户管理'),
                Tab(text: '编号规则'),
                Tab(text: '系统参数'),
                Tab(text: '授权'),
                Tab(text: '数据管理'),
              ],
            ),
          ),
          const Divider(height: 1),
          Expanded(
            child: TabBarView(
              children: [
                _buildShopInfoTab(),
                _buildUsersTab(),
                _buildNumberRulesTab(),
                _buildSystemParamsTab(),
                _buildLicenseTab(),
                _buildImportTab(),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildShopInfoTab() {
    final asyncShop = ref.watch(shopInfoProvider);
    final currentUser = ref.watch(authStateProvider).user;
    final isAdmin =
        currentUser?.role == 'admin' || currentUser?.role == 'superadmin';

    return asyncShop.when(
      loading: () => const Center(child: CircularProgressIndicator()),
      error: (e, _) => Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Icon(Icons.cloud_off, size: 40, color: AppTheme.textSecondary),
            const SizedBox(height: 12),
            const Text('暂无数据，网络不可用',
                style: TextStyle(color: AppTheme.textSecondary)),
            const SizedBox(height: 12),
            ElevatedButton(
              onPressed: () => ref.invalidate(shopInfoProvider),
              child: const Text('重试'),
            ),
          ],
        ),
      ),
      data: (shop) => SingleChildScrollView(
        padding: const EdgeInsets.all(24),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text('酒行信息',
                style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
            const SizedBox(height: 4),
            const Text('门店的基本信息，仅管理员可编辑',
                style: TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
            const SizedBox(height: 16),
            Card(
              child: Padding(
                padding: const EdgeInsets.all(20),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    // Logo 预览行
                    Row(
                      children: [
                        _ShopLogoPreview(logoUrl: shop.logoUrl, shopName: shop.name, size: 64),
                        const SizedBox(width: 16),
                        Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(shop.name.isNotEmpty ? shop.name : '—',
                                style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
                            const SizedBox(height: 4),
                            Text(shop.code.isNotEmpty ? shop.code : '—',
                                style: const TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
                          ],
                        ),
                      ],
                    ),
                    const Divider(height: 24),
                    _ShopInfoRow(
                        label: '门店地址',
                        value: shop.address.isNotEmpty ? shop.address : '—'),
                    const Divider(height: 16),
                    _ShopInfoRow(
                        label: '联系电话',
                        value: shop.phone.isNotEmpty ? shop.phone : '—'),
                    const Divider(height: 16),
                    _ShopInfoRow(
                        label: '负责人',
                        value:
                            shop.managerName.isNotEmpty ? shop.managerName : '—'),
                  ],
                ),
              ),
            ),
            if (isAdmin) ...[
              const SizedBox(height: 16),
              ElevatedButton.icon(
                onPressed: () => _showEditShopDialog(context, shop),
                icon: const Icon(Icons.edit_outlined, size: 16),
                label: const Text('编辑信息'),
              ),
            ],
          ],
        ),
      ),
    );
  }

  void _showEditShopDialog(BuildContext context, ShopInfo shop) {
    showAppDialog(
      context: context,
      builder: (ctx) => _ShopEditDialog(
        shop: shop,
        onSaved: () => ref.invalidate(shopInfoProvider),
      ),
    );
  }

  Widget _buildUsersTab() {
    final asyncUsers = ref.watch(userListProvider);
    return Column(
      children: [
        Container(
          height: 52,
          color: AppTheme.surface,
          padding: const EdgeInsets.symmetric(horizontal: 12),
          child: Row(
            children: [
              ElevatedButton.icon(
                onPressed: () => _showAddUserDialog(context),
                icon: const Icon(Icons.person_add, size: 16),
                label: const Text('新增用户'),
              ),
            ],
          ),
        ),
        const Divider(height: 1),
        Expanded(
          child: asyncUsers.when(
            loading: () => const Center(child: CircularProgressIndicator()),
            error: (e, _) => Center(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  const Icon(Icons.cloud_off, size: 40, color: AppTheme.textSecondary),
                  const SizedBox(height: 12),
                  const Text('暂无数据，网络不可用',
                      style: const TextStyle(color: AppTheme.textSecondary)),
                  const SizedBox(height: 12),
                  ElevatedButton(
                    onPressed: () => ref.read(userListProvider.notifier).reload(),
                    child: const Text('重试'),
                  ),
                ],
              ),
            ),
            data: (users) => SingleChildScrollView(
              child: DataTable(
                headingRowColor: WidgetStateProperty.all(const Color(0xFFF0F4FF)),
                columns: const [
                  DataColumn(label: Text('姓名')),
                  DataColumn(label: Text('用户名')),
                  DataColumn(label: Text('角色')),
                  DataColumn(label: Text('状态')),
                  DataColumn(label: Text('操作')),
                ],
                rows: users
                    .map((u) => DataRow(cells: [
                          DataCell(Row(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              CircleAvatar(
                                radius: 14,
                                backgroundColor:
                                    AppTheme.primary.withOpacity(0.15),
                                child: Text(
                                  (u.realName ?? u.username)
                                      .substring(0, 1),
                                  style: const TextStyle(
                                      fontSize: 12,
                                      color: AppTheme.primary,
                                      fontWeight: FontWeight.w600),
                                ),
                              ),
                              const SizedBox(width: 8),
                              Text(u.realName ?? u.username),
                            ],
                          )),
                          DataCell(Text(u.username,
                              style: const TextStyle(
                                  fontFamily: 'monospace', fontSize: 12))),
                          DataCell(_RoleBadge(u.roleLabel)),
                          DataCell(Switch(
                            value: u.isActive,
                            onChanged: (v) => ref
                                .read(userListProvider.notifier)
                                .updateUser(u.id, {'is_active': v}),
                            materialTapTargetSize:
                                MaterialTapTargetSize.shrinkWrap,
                          )),
                          DataCell(Row(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              TextButton(
                                onPressed: () =>
                                    _showEditUserDialog(context, u),
                                child: const Text('编辑',
                                    style: TextStyle(fontSize: 12)),
                              ),
                              TextButton(
                                onPressed: () =>
                                    _showResetPasswordDialog(context, u),
                                child: const Text('重置密码',
                                    style: TextStyle(fontSize: 12)),
                              ),
                            ],
                          )),
                        ]))
                    .toList(),
              ),
            ),
          ),
        ),
      ],
    );
  }

  // ── 授权 Tab ──────────────────────────────────────────────
  Widget _buildLicenseTab() {
    final licenseAsync = ref.watch(licenseProvider);
    return SingleChildScrollView(
      padding: const EdgeInsets.all(24),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Text('授权信息',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
          const SizedBox(height: 4),
          const Text('当前门店的授权状态与到期信息',
              style: TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
          const SizedBox(height: 16),
          Card(
            child: Padding(
              padding: const EdgeInsets.all(20),
              child: licenseAsync.when(
                loading: () => const _ParamRow(label: '授权状态', value: '加载中…'),
                error: (_, __) => const _ParamRow(label: '授权状态', value: '暂无授权信息'),
                data: (lic) {
                  if (lic == null) {
                    return Column(
                      children: [
                        const _ParamRow(label: '授权状态', value: '未激活'),
                        const SizedBox(height: 12),
                        OutlinedButton.icon(
                          onPressed: _showRenewLicenseDialog,
                          icon: const Icon(Icons.card_membership, size: 16),
                          label: const Text('续费 / 升级授权'),
                        ),
                      ],
                    );
                  }
                  final statusColor = lic.isExpired
                      ? AppTheme.danger
                      : lic.isActive
                          ? AppTheme.success
                          : AppTheme.textSecondary;
                  final statusText = lic.isExpired
                      ? '已过期'
                      : lic.isActive
                          ? '正常'
                          : '已停用';
                  return Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      _ParamRow(label: '授权类型', value: lic.typeLabel),
                      Padding(
                        padding: const EdgeInsets.symmetric(vertical: 8),
                        child: Row(
                          children: [
                            const SizedBox(
                              width: 180,
                              child: Text('授权状态',
                                  style: TextStyle(
                                      fontSize: 14,
                                      color: AppTheme.textSecondary)),
                            ),
                            Text(statusText,
                                style: TextStyle(
                                    fontSize: 14,
                                    fontWeight: FontWeight.w500,
                                    color: statusColor)),
                            if (lic.daysRemaining != null &&
                                lic.daysRemaining! <= 30) ...[
                              const SizedBox(width: 8),
                              Chip(
                                label: Text(
                                  lic.isExpired
                                      ? '已过期'
                                      : '剩余 ${lic.daysRemaining} 天',
                                  style: const TextStyle(
                                      fontSize: 11, color: Colors.white),
                                ),
                                backgroundColor:
                                    lic.isExpired ? AppTheme.danger : Colors.orange,
                                padding: EdgeInsets.zero,
                                materialTapTargetSize:
                                    MaterialTapTargetSize.shrinkWrap,
                              ),
                            ],
                          ],
                        ),
                      ),
                      if (lic.expiresAt != null)
                        _ParamRow(
                            label: '到期时间',
                            value: DateFormat('yyyy-MM-dd').format(lic.expiresAt!))
                      else
                        const _ParamRow(label: '到期时间', value: '永久有效'),
                      if (lic.activatedAt != null)
                        _ParamRow(
                            label: '激活时间',
                            value: DateFormat('yyyy-MM-dd').format(lic.activatedAt!)),
                      const SizedBox(height: 12),
                      OutlinedButton.icon(
                        onPressed: _showRenewLicenseDialog,
                        icon: const Icon(Icons.card_membership, size: 16),
                        label: const Text('续费 / 升级授权'),
                      ),
                    ],
                  );
                },
              ),
            ),
          ),
        ],
      ),
    );
  }

  void _showRenewLicenseDialog() {
    showAppDialog(
      context: context,
      builder: (ctx) => AlertDialog(
        title: const Text('续费 / 升级授权'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text('请联系我们获取续费报价：'),
            const SizedBox(height: 12),
            SelectableText('📧 ${AppInfo.email}',
                style: const TextStyle(fontSize: 13)),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(ctx),
            child: const Text('关闭'),
          ),
          ElevatedButton(
            onPressed: () async {
              await Clipboard.setData(ClipboardData(text: AppInfo.email));
              if (ctx.mounted) {
                Navigator.pop(ctx);
                ScaffoldMessenger.of(context).showSnackBar(
                  const SnackBar(content: Text('邮箱已复制到剪贴板')),
                );
              }
            },
            child: const Text('复制邮箱'),
          ),
        ],
      ),
    );
  }

  Widget _buildNumberRulesTab() {
    final asyncRules = ref.watch(numberRuleListProvider);
    return asyncRules.when(
      loading: () => const Center(child: CircularProgressIndicator()),
      error: (e, _) => Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Icon(Icons.cloud_off, size: 40, color: AppTheme.textSecondary),
                const SizedBox(height: 12),
                const Text('暂无数据，网络不可用',
                style: const TextStyle(color: AppTheme.textSecondary)),
            const SizedBox(height: 12),
            ElevatedButton(
              onPressed: () =>
                  ref.read(numberRuleListProvider.notifier).reload(),
              child: const Text('重试'),
            ),
          ],
        ),
      ),
      data: (rules) => SingleChildScrollView(
        padding: const EdgeInsets.all(24),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text('编号规则配置',
                style:
                    TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
            const SizedBox(height: 4),
            const Text('配置各类单据的自动编号规则，修改后对新建单据生效',
                style: TextStyle(
                    fontSize: 13, color: AppTheme.textSecondary)),
            const SizedBox(height: 16),
            Card(
              child: DataTable(
                headingRowColor:
                    WidgetStateProperty.all(const Color(0xFFF0F4FF)),
                columns: const [
                  DataColumn(label: Text('单据类型')),
                  DataColumn(label: Text('前缀')),
                  DataColumn(label: Text('日期格式')),
                  DataColumn(label: Text('下一编号示例')),
                  DataColumn(label: Text('当前序号'), numeric: true),
                  DataColumn(label: Text('操作')),
                ],
                rows: rules
                    .map((r) => DataRow(cells: [
                          DataCell(Text(r.typeLabel,
                              style: const TextStyle(
                                  fontWeight: FontWeight.w500))),
                          DataCell(Container(
                            padding: const EdgeInsets.symmetric(
                                horizontal: 8, vertical: 2),
                            decoration: BoxDecoration(
                              color: AppTheme.primary.withOpacity(0.1),
                              borderRadius: BorderRadius.circular(3),
                            ),
                            child: Text(r.prefix,
                                style: const TextStyle(
                                    color: AppTheme.primary,
                                    fontFamily: 'monospace',
                                    fontSize: 13,
                                    fontWeight: FontWeight.w600)),
                          )),
                          DataCell(Text(r.dateFormat,
                              style: const TextStyle(
                                  fontSize: 12,
                                  color: AppTheme.textSecondary))),
                          DataCell(Text(r.exampleNo,
                              style: const TextStyle(
                                  fontFamily: 'monospace', fontSize: 12))),
                          DataCell(Text('${r.currentNo}')),
                          DataCell(TextButton(
                              onPressed: () =>
                                  _showNumberRuleDialog(context, r),
                              child: const Text('编辑',
                                  style: TextStyle(fontSize: 12)))),
                        ]))
                    .toList(),
              ),
            ),
          ],
        ),
      ),
    );
  }

  void _showNumberRuleDialog(BuildContext context, NumberRule rule) {
    final prefixCtrl = TextEditingController(text: rule.prefix);
    final currentNoCtrl =
        TextEditingController(text: '${rule.currentNo}');
    showAppDialog(
      context: context,
      builder: (ctx) => AlertDialog(
        title: Text('编辑编号规则 — ${rule.typeLabel}'),
        content: SizedBox(
          width: context.dialogWidth(360),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              TextField(
                controller: prefixCtrl,
                decoration: const InputDecoration(labelText: '前缀'),
              ),
              const SizedBox(height: 12),
              TextField(
                controller: currentNoCtrl,
                decoration: const InputDecoration(labelText: '当前序号'),
                keyboardType: TextInputType.number,
              ),
            ],
          ),
        ),
        actions: [
          TextButton(
              onPressed: () => Navigator.of(ctx).pop(),
              child: const Text('取消')),
          ElevatedButton(
            onPressed: () async {
              Navigator.of(ctx).pop();
              try {
                await ref
                    .read(numberRuleListProvider.notifier)
                    .updateRule(rule.id, {
                  'prefix': prefixCtrl.text.trim(),
                  'current_no': int.tryParse(currentNoCtrl.text) ?? rule.currentNo,
                });
                if (context.mounted) {
                  ScaffoldMessenger.of(context).showSnackBar(
                    const SnackBar(
                        content: Text('编号规则已更新'),
                        backgroundColor: AppTheme.success),
                  );
                }
              } catch (e) {
                if (context.mounted) {
                  ScaffoldMessenger.of(context).showSnackBar(
                    SnackBar(
                        content: Text('更新失败：$e'),
                        backgroundColor: AppTheme.danger),
                  );
                }
              }
            },
            child: const Text('保存'),
          ),
        ],
      ),
    );
  }

  Widget _buildSystemParamsTab() {
    return SingleChildScrollView(
      padding: const EdgeInsets.all(24),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Text('系统参数',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
          const SizedBox(height: 16),
          Card(
            child: Padding(
              padding: const EdgeInsets.all(20),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text('基本设置',
                      style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: AppTheme.primaryDark)),
                  const Divider(height: 24),
                  _ParamRow(
                    label: '系统名称',
                    value: _sysName,
                    onEdit: () => _showEditParamDialog('系统名称', _sysName,
                        (v) => setState(() => _sysName = v)),
                  ),
                  _ParamRow(
                    label: '货币单位',
                    value: _sysCurrency,
                    onEdit: () => _showEditParamDialog('货币单位', _sysCurrency,
                        (v) => setState(() => _sysCurrency = v)),
                  ),
                  _ParamRow(
                    label: '日期格式',
                    value: _sysDateFormat,
                    onEdit: () => _showEditParamDialog('日期格式', _sysDateFormat,
                        (v) => setState(() => _sysDateFormat = v)),
                  ),
                  _ParamRow(
                    label: '时区',
                    value: _sysTimezone,
                    onEdit: () => _showEditParamDialog('时区', _sysTimezone,
                        (v) => setState(() => _sysTimezone = v)),
                  ),
                  const SizedBox(height: 16),
                  const Text('审核设置',
                      style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: AppTheme.primaryDark)),
                  const Divider(height: 24),
                  _ParamRow(
                    label: '入库单需要审核',
                    value: _requireStockInApproval ? '是' : '否',
                    switchValue: _requireStockInApproval,
                    onSwitchChanged: (v) =>
                        setState(() => _requireStockInApproval = v),
                  ),
                  _ParamRow(
                    label: '出库单需要审核',
                    value: _requireStockOutApproval ? '是' : '否',
                    switchValue: _requireStockOutApproval,
                    onSwitchChanged: (v) =>
                        setState(() => _requireStockOutApproval = v),
                  ),
                  _ParamRow(
                    label: '允许超量出库',
                    value: _allowOverstock ? '是' : '否',
                    switchValue: _allowOverstock,
                    onSwitchChanged: (v) =>
                        setState(() => _allowOverstock = v),
                  ),
                ],
              ),
            ),
          ),
          const SizedBox(height: 12),
          Row(
            children: [
              ElevatedButton(
                onPressed: () {
                  ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
                      content: Text('设置已保存'),
                      backgroundColor: AppTheme.success));
                },
                child: const Text('保存设置'),
              ),
              const SizedBox(width: 8),
              OutlinedButton(
                onPressed: () => setState(() {
                  _sysName = '酒库管理系统';
                  _sysCurrency = '人民币（CNY）';
                  _sysDateFormat = 'YYYY-MM-DD';
                  _sysTimezone = 'Asia/Shanghai (UTC+8)';
                  _requireStockInApproval = true;
                  _requireStockOutApproval = true;
                  _allowOverstock = false;
                }),
                child: const Text('重置默认'),
              ),
            ],
          ),
        ],
      ),
    );
  }

  // ── 数据导入 Tab ──────────────────────────────────────────
  Widget _buildImportTab() {
    final currentUser = ref.watch(authStateProvider).user;
    final isSuperAdmin = currentUser?.role == 'superadmin';
    return _BatchImportWidget(isSuperAdmin: isSuperAdmin);
  }

  void _showEditParamDialog(
      String label, String current, ValueChanged<String> onSave) {
    final ctrl = TextEditingController(text: current);
    showAppDialog(
      context: context,
      builder: (ctx) => AlertDialog(
        title: Text('修改$label'),
        content: SizedBox(
          width: context.dialogWidth(320),
          child: TextField(
            controller: ctrl,
            autofocus: true,
            decoration: InputDecoration(labelText: label),
          ),
        ),
        actions: [
          TextButton(
              onPressed: () => Navigator.of(ctx).pop(),
              child: const Text('取消')),
          ElevatedButton(
            onPressed: () {
              final v = ctrl.text.trim();
              if (v.isNotEmpty) onSave(v);
              Navigator.of(ctx).pop();
            },
            child: const Text('确定'),
          ),
        ],
      ),
    );
  }

  void _showAddUserDialog(BuildContext context) {
    showAppDialog(
      context: context,
      builder: (ctx) => _UserFormDialog(
        onSaved: () => ref.read(userListProvider.notifier).reload(),
      ),
    );
  }

  void _showEditUserDialog(BuildContext context, AppUser user) {
    showAppDialog(
      context: context,
      builder: (ctx) => _UserFormDialog(
        user: user,
        onSaved: () => ref.read(userListProvider.notifier).reload(),
      ),
    );
  }

  void _showResetPasswordDialog(BuildContext context, AppUser user) {
    showAppDialog(
      context: context,
      builder: (ctx) => _ResetPasswordDialog(user: user),
    );
  }
}

// ── 新增/编辑用户弹窗 ─────────────────────────────────────
class _UserFormDialog extends ConsumerStatefulWidget {
  final AppUser? user;
  final VoidCallback onSaved;
  const _UserFormDialog({this.user, required this.onSaved});

  @override
  ConsumerState<_UserFormDialog> createState() => _UserFormDialogState();
}

class _UserFormDialogState extends ConsumerState<_UserFormDialog> {
  final _formKey = GlobalKey<FormState>();
  late final TextEditingController _usernameCtrl;
  late final TextEditingController _realNameCtrl;
  late final TextEditingController _phoneCtrl;
  late final TextEditingController _passwordCtrl;
  late String _role;
  bool _saving = false;

  bool get _isEdit => widget.user != null;

  @override
  void initState() {
    super.initState();
    _usernameCtrl = TextEditingController(text: widget.user?.username ?? '');
    _realNameCtrl = TextEditingController(text: widget.user?.realName ?? '');
    _phoneCtrl = TextEditingController(text: widget.user?.phone ?? '');
    _passwordCtrl = TextEditingController();
    _role = widget.user?.role ?? 'operator';
  }

  @override
  void dispose() {
    _usernameCtrl.dispose();
    _realNameCtrl.dispose();
    _phoneCtrl.dispose();
    _passwordCtrl.dispose();
    super.dispose();
  }

  Future<void> _save() async {
    if (!_formKey.currentState!.validate()) return;
    setState(() => _saving = true);
    try {
      final notifier = ref.read(userListProvider.notifier);
      if (_isEdit) {
        await notifier.updateUser(widget.user!.id, {
          'real_name': _realNameCtrl.text.trim(),
          'phone': _phoneCtrl.text.trim(),
          'role': _role,
        });
      } else {
        await notifier.createUser({
          'username': _usernameCtrl.text.trim(),
          'password': _passwordCtrl.text,
          'real_name': _realNameCtrl.text.trim(),
          'phone': _phoneCtrl.text.trim(),
          'role': _role,
        });
      }
      if (mounted) {
        Navigator.of(context).pop();
        widget.onSaved();
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
          content: Text(_isEdit ? '用户更新成功' : '用户创建成功'),
          backgroundColor: AppTheme.success,
        ));
      }
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
          content: Text('保存失败：$e'),
          backgroundColor: AppTheme.danger,
        ));
      }
    } finally {
      if (mounted) setState(() => _saving = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Text(_isEdit ? '编辑用户' : '新增用户'),
      content: SizedBox(
        width: context.dialogWidth(400),
        child: Form(
          key: _formKey,
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              if (!_isEdit)
                TextFormField(
                  controller: _usernameCtrl,
                  decoration: const InputDecoration(labelText: '用户名'),
                  validator: (v) => (v == null || v.isEmpty) ? '不能为空' : null,
                ),
              if (!_isEdit) const SizedBox(height: 12),
              TextFormField(
                controller: _realNameCtrl,
                decoration: const InputDecoration(labelText: '姓名'),
              ),
              const SizedBox(height: 12),
              TextFormField(
                controller: _phoneCtrl,
                decoration: const InputDecoration(labelText: '手机号'),
              ),
              const SizedBox(height: 12),
              if (!_isEdit) ...[
                TextFormField(
                  controller: _passwordCtrl,
                  obscureText: true,
                  decoration: const InputDecoration(labelText: '初始密码'),
                  validator: (v) => (v == null || v.isEmpty) ? '不能为空' : null,
                ),
                const SizedBox(height: 12),
              ],
              DropdownButtonFormField<String>(
                value: _role,
                items: const [
                  DropdownMenuItem(value: 'superadmin', child: Text('超级管理员')),
                  DropdownMenuItem(value: 'admin', child: Text('管理员')),
                  DropdownMenuItem(value: 'operator', child: Text('操作员')),
                  DropdownMenuItem(value: 'readonly', child: Text('只读')),
                ],
                onChanged: (v) => setState(() => _role = v ?? 'operator'),
                decoration: const InputDecoration(labelText: '角色'),
              ),
            ],
          ),
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('取消'),
        ),
        ElevatedButton(
          onPressed: _saving ? null : _save,
          child: _saving
              ? const SizedBox(
                  width: 16, height: 16,
                  child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
              : const Text('保存'),
        ),
      ],
    );
  }
}

// ── 重置密码弹窗 ──────────────────────────────────────────
class _ResetPasswordDialog extends ConsumerStatefulWidget {
  final AppUser user;
  const _ResetPasswordDialog({required this.user});

  @override
  ConsumerState<_ResetPasswordDialog> createState() => _ResetPasswordDialogState();
}

class _ResetPasswordDialogState extends ConsumerState<_ResetPasswordDialog> {
  final _ctrl = TextEditingController();
  bool _saving = false;

  @override
  void dispose() {
    _ctrl.dispose();
    super.dispose();
  }

  Future<void> _save() async {
    if (_ctrl.text.isEmpty) return;
    setState(() => _saving = true);
    try {
      await ref.read(userListProvider.notifier).resetPassword(widget.user.id, _ctrl.text);
      if (mounted) {
        Navigator.of(context).pop();
        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
          content: Text('密码已重置'),
          backgroundColor: AppTheme.success,
        ));
      }
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
          content: Text('重置失败：$e'),
          backgroundColor: AppTheme.danger,
        ));
      }
    } finally {
      if (mounted) setState(() => _saving = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Text('重置密码 — ${widget.user.username}'),
      content: SizedBox(
        width: context.dialogWidth(360),
        child: TextField(
          controller: _ctrl,
          obscureText: true,
          decoration: const InputDecoration(labelText: '新密码'),
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('取消'),
        ),
        ElevatedButton(
          onPressed: _saving ? null : _save,
          child: _saving
              ? const SizedBox(
                  width: 16, height: 16,
                  child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
              : const Text('确认重置'),
        ),
      ],
    );
  }
}

class _RoleBadge extends StatelessWidget {
  final String role;
  const _RoleBadge(this.role);

  @override
  Widget build(BuildContext context) {
    final Color bg;
    final Color fg;
    switch (role) {
      case '超级管理员':
        bg = const Color(0xFFFCE4EC);
        fg = AppTheme.danger;
        break;
      case '管理员':
        bg = const Color(0xFFE3F2FD);
        fg = AppTheme.primary;
        break;
      case '操作员':
        bg = const Color(0xFFE8F5E9);
        fg = AppTheme.success;
        break;
      default:
        bg = const Color(0xFFF5F5F5);
        fg = AppTheme.textSecondary;
    }
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
      decoration: BoxDecoration(color: bg, borderRadius: BorderRadius.circular(3)),
      child: Text(role, style: TextStyle(color: fg, fontSize: 12, fontWeight: FontWeight.w500)),
    );
  }
}

class _ParamRow extends StatelessWidget {
  final String label;
  final String value;
  final bool? switchValue;
  final ValueChanged<bool>? onSwitchChanged;
  final VoidCallback? onEdit;

  const _ParamRow({
    required this.label,
    required this.value,
    this.switchValue,
    this.onSwitchChanged,
    this.onEdit,
  });

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 8),
      child: Row(
        children: [
          SizedBox(
            width: 180,
            child: Text(label,
                style: const TextStyle(
                    fontSize: 14, color: AppTheme.textSecondary)),
          ),
          if (switchValue != null)
            Switch(
              value: switchValue!,
              onChanged: onSwitchChanged,
              materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
            )
          else
            Text(value,
                style: const TextStyle(
                    fontSize: 14, fontWeight: FontWeight.w500)),
          const Spacer(),
          if (onEdit != null)
            TextButton(
              onPressed: onEdit,
              child: const Text('修改', style: TextStyle(fontSize: 12)),
            ),
        ],
      ),
    );
  }
}

// ── 批量数据导入 ───────────────────────────────────────────

class _ImportSlot {
  final String title;
  final String endpoint;
  final String hint;
  PlatformFile? file;
  // null = 未运行；true = 成功；false = 失败
  bool? success;
  String? error;
  int total = 0;
  int imported = 0;
  int skipped = 0;
  int updated = 0;
  // 进度
  int uploadPercent = 0;
  bool isProcessing = false;
  int processingSeconds = 0;

  _ImportSlot(this.title, this.endpoint, this.hint);

  bool get hasResult => success != null;

  void resetProgress() {
    uploadPercent = 0;
    isProcessing = false;
    processingSeconds = 0;
    success = null;
    error = null;
  }
}

class _BatchImportWidget extends ConsumerStatefulWidget {
  final bool isSuperAdmin;
  const _BatchImportWidget({required this.isSuperAdmin});

  @override
  ConsumerState<_BatchImportWidget> createState() => _BatchImportWidgetState();
}

class _BatchImportWidgetState extends ConsumerState<_BatchImportWidget> {
  bool _loading = false;
  String? _lastDir;
  OverlayEntry? _importBarrier;

  static const _prefKey = 'import_last_dir';

  late final List<_ImportSlot> _slots = [
    _ImportSlot('往来单位', '/import/partners',
        '格式：编号 | 类型 | 状态 | 名称 | 电话 | 卡号 | 初始金额 | 单位 | 地址 | 备注'),
    _ImportSlot('商品名称', '/import/product-names',
        '格式：选项编号 | 选项名称 | 备注'),
    _ImportSlot('商品系列', '/import/product-series',
        '格式：选项编号 | 选项名称 | 备注'),
    _ImportSlot('商品规格', '/import/product-specs',
        '格式：选项编号 | 选项名称 | 单品数量 | 备注'),
    _ImportSlot('库存', '/import/inventory',
        '格式：商品编号|商品名称|系列|规格|单位|库存数量|单价|金额|生产日期|批次|分类|所在仓库|入库日期|供应商|上次盘点|备注'),
  ];

  final Set<String> _selectedTables = {};
  bool _clearing = false;

  static const _clearOptions = [
    (key: 'stock_in',  label: '入库单'),
    (key: 'stock_out', label: '出库单'),
    (key: 'inventory', label: '库存管理'),
    (key: 'products',  label: '商品详情'),
    (key: 'partners',  label: '往来单位'),
  ];

  @override
  void initState() {
    super.initState();
    SharedPreferences.getInstance().then((prefs) {
      final dir = prefs.getString(_prefKey);
      if (dir != null && mounted) setState(() => _lastDir = dir);
    });
  }

  Future<void> _pickFile(int index) async {
    try {
      final result = await FilePicker.platform.pickFiles(
        type: FileType.custom,
        allowedExtensions: ['xls', 'xlsx'],
        withData: true,
        initialDirectory: kIsWeb ? null : _lastDir,
      );
      if (result == null || result.files.isEmpty) return;

      // 保存目录供下次使用（仅非 web 平台）
      if (!kIsWeb) {
        final path = result.files.first.path;
        if (path != null) {
          final dir = path.contains('/') ? path.substring(0, path.lastIndexOf('/')) : null;
          if (dir != null) {
            _lastDir = dir;
            SharedPreferences.getInstance().then((p) => p.setString(_prefKey, dir));
          }
        }
      }

      if (!mounted) return;
      setState(() {
        _slots[index].file = result.files.first;
        _slots[index].success = null;
        _slots[index].error = null;
      });
    } catch (e) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('选择文件失败：$e')),
      );
    }
  }

  void _showBarrier() {
    _importBarrier = OverlayEntry(
      builder: (_) => Stack(children: [
        const ModalBarrier(dismissible: false, color: Colors.transparent),
        Positioned(
          bottom: 24, left: 0, right: 0,
          child: Center(
            child: Container(
              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 10),
              decoration: BoxDecoration(
                color: Colors.black87,
                borderRadius: BorderRadius.circular(8),
              ),
              child: const Row(mainAxisSize: MainAxisSize.min, children: [
                SizedBox(width: 14, height: 14,
                    child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white)),
                SizedBox(width: 10),
                Text('导入中，请勿切换页面…',
                    style: TextStyle(color: Colors.white, fontSize: 13)),
              ]),
            ),
          ),
        ),
      ]),
    );
    Overlay.of(context, rootOverlay: true).insert(_importBarrier!);
  }

  void _removeBarrier() {
    _importBarrier?.remove();
    _importBarrier = null;
  }

  Future<void> _runImport() async {
    final token = ref.read(authStateProvider).user?.accessToken ?? '';
    if (!_slots.any((s) => s.file != null)) return;

    _showBarrier();
    setState(() {
      _loading = true;
      for (final s in _slots) {
        if (s.file != null) s.resetProgress();
      }
    });

    final dio = Dio(BaseOptions(
      baseUrl: AppConfig.apiBaseUrl,
      sendTimeout: const Duration(seconds: 120),
      receiveTimeout: const Duration(seconds: 300),
    ));
    dio.options.headers['Authorization'] = 'Bearer $token';

    for (final slot in _slots) {
      if (slot.file == null) continue;
      final bytes = slot.file!.bytes;
      if (bytes == null) {
        if (mounted) setState(() { slot.success = false; slot.error = '无法读取文件'; });
        continue;
      }

      Timer? processingTimer;
      bool uploadDone = false;

      try {
        final formData = FormData.fromMap({
          'file': MultipartFile.fromBytes(bytes, filename: slot.file!.name),
        });
        final resp = await dio.post(
          slot.endpoint,
          data: formData,
          onSendProgress: (sent, total) {
            if (total <= 0 || !mounted) return;
            if (sent >= total && !uploadDone) {
              uploadDone = true;
              setState(() { slot.isProcessing = true; slot.processingSeconds = 0; });
              processingTimer = Timer.periodic(const Duration(seconds: 1), (_) {
                if (!mounted) return;
                setState(() => slot.processingSeconds++);
              });
            } else if (!uploadDone) {
              final pct = (sent / total * 100).round().clamp(0, 99);
              if (mounted) setState(() => slot.uploadPercent = pct);
            }
          },
        );
        processingTimer?.cancel();
        final data = (resp.data is Map) ? resp.data as Map<String, dynamic> : <String, dynamic>{};
        if (mounted) setState(() {
          slot.success = true;
          slot.imported = (data['imported'] ?? 0) as int;
          slot.skipped = (data['skipped'] ?? 0) as int;
          slot.updated = (data['updated'] ?? 0) as int;
          slot.total = (data['total'] ?? slot.imported + slot.skipped + slot.updated) as int;
          slot.isProcessing = false;
        });
      } on DioException catch (e) {
        processingTimer?.cancel();
        final raw = e.response?.data;
        final msg = (raw is Map ? raw['error'] : null) ?? e.message ?? '未知错误';
        if (mounted) setState(() {
          slot.success = false;
          slot.error = msg.toString();
          slot.isProcessing = false;
        });
      } catch (e) {
        processingTimer?.cancel();
        if (mounted) setState(() {
          slot.success = false;
          slot.error = e.toString();
          slot.isProcessing = false;
        });
      }
    }

    if (mounted) {
      _removeBarrier();
      setState(() => _loading = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    final hasAnyFile = _slots.any((s) => s.file != null);
    final ran = _slots.where((s) => s.file != null && s.hasResult).toList();
    final allDone = !_loading && ran.length == _slots.where((s) => s.file != null).length && ran.isNotEmpty;
    final failCount = ran.where((s) => s.success == false).length;

    return SingleChildScrollView(
      padding: const EdgeInsets.all(24),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Text('数据导入',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
          const SizedBox(height: 4),
          const Text(
            '选择对应的 Excel 文件后点击「全部导入」，系统将依次导入，按名称去重（已存在的数据不重复导入）。',
            style: TextStyle(fontSize: 13, color: AppTheme.textSecondary),
          ),
          const SizedBox(height: 20),
          Card(
            child: Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 8),
              child: Column(
                children: [
                  for (int i = 0; i < _slots.length; i++) ...[
                    _buildSlotRow(i),
                    if (i < _slots.length - 1)
                      const Divider(height: 1),
                  ],
                ],
              ),
            ),
          ),
          const SizedBox(height: 16),
          Row(
            children: [
              ElevatedButton.icon(
                onPressed: (_loading || !hasAnyFile) ? null : _runImport,
                icon: _loading
                    ? const SizedBox(
                        width: 14, height: 14,
                        child: CircularProgressIndicator(
                            strokeWidth: 2, color: Colors.white))
                    : const Icon(Icons.upload_rounded, size: 16),
                label: Text(_loading ? '导入中...' : '全部导入'),
              ),
              const SizedBox(width: 16),
              if (allDone) ...[
                Icon(
                  failCount == 0
                      ? Icons.check_circle_outline
                      : Icons.warning_amber_rounded,
                  size: 16,
                  color: failCount == 0 ? AppTheme.success : Colors.orange,
                ),
                const SizedBox(width: 4),
                Text(
                  failCount == 0 ? '全部导入完成' : '$failCount 项失败，请检查错误信息',
                  style: TextStyle(
                    fontSize: 13,
                    color: failCount == 0 ? AppTheme.success : Colors.orange,
                  ),
                ),
              ],
            ],
          ),
          if (widget.isSuperAdmin) ...[
            const SizedBox(height: 32),
            const Divider(),
            const SizedBox(height: 16),
            _buildClearDataSection(),
          ],
        ],
      ),
    );
  }

  Widget _buildClearDataSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        // 标题行
        Row(
          children: [
            const Icon(Icons.delete_forever, color: AppTheme.danger, size: 20),
            const SizedBox(width: 8),
            const Text('危险操作 — 数据清空',
                style: TextStyle(
                    fontSize: 15,
                    fontWeight: FontWeight.w600,
                    color: AppTheme.danger)),
          ],
        ),
        const SizedBox(height: 12),
        // 红色警告框
        Container(
          padding: const EdgeInsets.all(14),
          decoration: BoxDecoration(
            color: const Color(0xFFFFF3F3),
            border: Border.all(color: AppTheme.danger.withOpacity(0.5)),
            borderRadius: BorderRadius.circular(6),
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(children: [
                const Icon(Icons.warning_amber_rounded,
                    color: AppTheme.danger, size: 18),
                const SizedBox(width: 6),
                const Text('警告：数据一旦清空，无法恢复！',
                    style: TextStyle(
                        color: AppTheme.danger,
                        fontWeight: FontWeight.w600,
                        fontSize: 13)),
              ]),
              const SizedBox(height: 6),
              const Text(
                '• 清空操作仅删除当前门店的数据，不影响其他门店\n'
                '• 操作不可撤销，请务必提前备份数据\n'
                '• 仅超级管理员可执行此操作',
                style: TextStyle(fontSize: 12, color: Color(0xFFB71C1C), height: 1.6),
              ),
            ],
          ),
        ),
        const SizedBox(height: 14),
        // 勾选框
        Wrap(
          spacing: 8,
          runSpacing: 4,
          children: _clearOptions.map((opt) {
            final selected = _selectedTables.contains(opt.key);
            return FilterChip(
              label: Text(opt.label),
              selected: selected,
              selectedColor: AppTheme.danger.withOpacity(0.15),
              checkmarkColor: AppTheme.danger,
              labelStyle: TextStyle(
                color: selected ? AppTheme.danger : AppTheme.textPrimary,
                fontWeight: selected ? FontWeight.w600 : FontWeight.normal,
              ),
              side: BorderSide(
                color: selected ? AppTheme.danger : Colors.grey.shade300,
              ),
              onSelected: _clearing
                  ? null
                  : (v) => setState(() {
                        if (v) {
                          _selectedTables.add(opt.key);
                        } else {
                          _selectedTables.remove(opt.key);
                        }
                      }),
            );
          }).toList(),
        ),
        const SizedBox(height: 14),
        // 清空按钮
        ElevatedButton.icon(
          onPressed: (_clearing || _selectedTables.isEmpty)
              ? null
              : () => _confirmClear(),
          style: ElevatedButton.styleFrom(
            backgroundColor: AppTheme.danger,
            foregroundColor: Colors.white,
            disabledBackgroundColor: Colors.grey.shade300,
          ),
          icon: _clearing
              ? const SizedBox(
                  width: 14, height: 14,
                  child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
              : const Icon(Icons.delete_sweep_outlined, size: 18),
          label: Text(_clearing ? '清空中...' : '清空选中数据'),
        ),
      ],
    );
  }

  Future<void> _confirmClear() async {
    final tables = List<String>.from(_selectedTables);
    final labels = _clearOptions
        .where((o) => tables.contains(o.key))
        .map((o) => o.label)
        .toList();

    final ctrl = TextEditingController();
    final confirmed = await showDialog<bool>(
      context: context,
      barrierDismissible: false,
      builder: (ctx) => StatefulBuilder(
        builder: (ctx, setS) => AlertDialog(
          title: Row(children: [
            const Icon(Icons.warning_amber_rounded, color: Colors.red, size: 22),
            const SizedBox(width: 8),
            const Text('确认清空数据', style: TextStyle(color: Colors.red)),
          ]),
          content: SizedBox(
            width: context.dialogWidth(400),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const Text('即将清空以下数据表：',
                    style: TextStyle(fontWeight: FontWeight.w500)),
                const SizedBox(height: 8),
                ...labels.map((l) => Padding(
                      padding: const EdgeInsets.only(left: 12, bottom: 4),
                      child: Row(children: [
                        const Icon(Icons.remove_circle,
                            color: Colors.red, size: 14),
                        const SizedBox(width: 6),
                        Text(l,
                            style: const TextStyle(
                                color: Colors.red, fontWeight: FontWeight.w600)),
                      ]),
                    )),
                const SizedBox(height: 16),
                Container(
                  padding: const EdgeInsets.all(12),
                  decoration: BoxDecoration(
                    color: const Color(0xFFFFF3F3),
                    borderRadius: BorderRadius.circular(4),
                    border: Border.all(color: Colors.red.shade200),
                  ),
                  child: const Text(
                    '⚠️ 此操作不可撤销，数据清空后无法恢复！',
                    style: TextStyle(
                        color: Colors.red,
                        fontSize: 13,
                        fontWeight: FontWeight.w600),
                  ),
                ),
                const SizedBox(height: 16),
                const Text('请输入 "确认清空" 以继续：',
                    style: TextStyle(fontSize: 13)),
                const SizedBox(height: 8),
                TextField(
                  controller: ctrl,
                  autofocus: true,
                  decoration: const InputDecoration(
                    hintText: '确认清空',
                    border: OutlineInputBorder(),
                    isDense: true,
                  ),
                  onChanged: (_) => setS(() {}),
                ),
              ],
            ),
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.of(ctx).pop(false),
              child: const Text('取消'),
            ),
            ElevatedButton(
              onPressed: ctrl.text == '确认清空'
                  ? () => Navigator.of(ctx).pop(true)
                  : null,
              style: ElevatedButton.styleFrom(
                backgroundColor: Colors.red,
                foregroundColor: Colors.white,
              ),
              child: const Text('确认清空'),
            ),
          ],
        ),
      ),
    );

    ctrl.dispose();
    if (confirmed != true || !mounted) return;

    setState(() => _clearing = true);
    try {
      final token = ref.read(authStateProvider).user?.accessToken ?? '';
      final dio = Dio(BaseOptions(baseUrl: AppConfig.apiBaseUrl));
      dio.options.headers['Authorization'] = 'Bearer $token';
      await dio.post('/admin/clear-data', data: {'tables': tables});
      if (!mounted) return;
      setState(() => _selectedTables.clear());
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('已清空：${labels.join('、')}'),
          backgroundColor: AppTheme.success,
        ),
      );
    } on DioException catch (e) {
      if (!mounted) return;
      final msg = (e.response?.data is Map ? e.response!.data['error'] : null) ??
          e.message ?? '未知错误';
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('清空失败：$msg'), backgroundColor: AppTheme.danger),
      );
    } catch (e) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('清空失败：$e'), backgroundColor: AppTheme.danger),
      );
    } finally {
      if (mounted) setState(() => _clearing = false);
    }
  }

  Widget _buildSlotRow(int index) {
    final slot = _slots[index];

    Widget? statusWidget;
    if (slot.hasResult) {
      if (slot.success == true) {
        final duplicate = slot.skipped + slot.updated;
        final parts = <String>[
          '共 ${slot.total} 条',
          '新增 ${slot.imported} 条',
          if (duplicate > 0) '重复 $duplicate 条',
        ];
        statusWidget = Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Icon(Icons.check_circle_outline, size: 15, color: AppTheme.success),
            const SizedBox(width: 4),
            Text(
              parts.join('，'),
              style: const TextStyle(fontSize: 13, color: AppTheme.success),
            ),
          ],
        );
      } else {
        statusWidget = Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Icon(Icons.error_outline, size: 15, color: AppTheme.danger),
            const SizedBox(width: 4),
            Text(
              slot.error ?? '未知错误',
              style: const TextStyle(fontSize: 13, color: AppTheme.danger),
            ),
          ],
        );
      }
    } else if (_loading && slot.file != null) {
      if (slot.isProcessing) {
        statusWidget = Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            SizedBox(
              width: 12, height: 12,
              child: CircularProgressIndicator(strokeWidth: 2, color: AppTheme.primary),
            ),
            const SizedBox(width: 6),
            Text(
              '导入数据${slot.processingSeconds > 0 ? "（${slot.processingSeconds}秒）" : ""}',
              style: const TextStyle(fontSize: 13, color: AppTheme.textSecondary),
            ),
          ],
        );
      } else {
        statusWidget = Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            SizedBox(
              width: 80,
              child: LinearProgressIndicator(
                value: slot.uploadPercent / 100,
                backgroundColor: Colors.grey[200],
                valueColor: AlwaysStoppedAnimation<Color>(AppTheme.primary),
                minHeight: 6,
              ),
            ),
            const SizedBox(width: 6),
            Text(
              '上传 ${slot.uploadPercent}%',
              style: const TextStyle(fontSize: 12, color: AppTheme.textSecondary),
            ),
          ],
        );
      }
    }

    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 10),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              SizedBox(
                width: 68,
                child: Text(slot.title,
                    style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w500)),
              ),
              const SizedBox(width: 12),
              OutlinedButton(
                onPressed: _loading ? null : () => _pickFile(index),
                style: OutlinedButton.styleFrom(
                  padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
                  minimumSize: Size.zero,
                  tapTargetSize: MaterialTapTargetSize.shrinkWrap,
                ),
                child: const Text('选择文件', style: TextStyle(fontSize: 13)),
              ),
              const SizedBox(width: 12),
              Expanded(
                child: Text(
                  slot.file?.name ?? '未选择',
                  style: TextStyle(
                    fontSize: 13,
                    color: slot.file != null ? AppTheme.textPrimary : AppTheme.textSecondary,
                  ),
                  overflow: TextOverflow.ellipsis,
                ),
              ),
              const SizedBox(width: 12),
              if (statusWidget != null) statusWidget,
            ],
          ),
          const SizedBox(height: 3),
          Padding(
            padding: const EdgeInsets.only(left: 80),
            child: Text(
              slot.hint,
              style: const TextStyle(fontSize: 11, color: AppTheme.textSecondary),
            ),
          ),
        ],
      ),
    );
  }
}

// ── 门店 Logo 预览 ────────────────────────────────────────
class _ShopLogoPreview extends StatelessWidget {
  final String logoUrl;
  final String shopName;
  final double size;
  const _ShopLogoPreview({required this.logoUrl, required this.shopName, this.size = 64});

  @override
  Widget build(BuildContext context) {
    final radius = BorderRadius.circular(size * 0.19);
    if (logoUrl.isNotEmpty) {
      final fullUrl = logoUrl.startsWith('http') ? logoUrl : '${AppConfig.apiBaseUrl.replaceAll('/api/v1', '')}$logoUrl';
      return ClipRRect(
        borderRadius: radius,
        child: Image.network(
          fullUrl,
          width: size,
          height: size,
          fit: BoxFit.cover,
          errorBuilder: (_, __, ___) => _initial(radius),
        ),
      );
    }
    return _initial(radius);
  }

  Widget _initial(BorderRadius radius) {
    final initial = shopName.isNotEmpty ? shopName.characters.first : '店';
    return Container(
      width: size,
      height: size,
      decoration: BoxDecoration(
        color: const Color(0xFF0F3057),
        borderRadius: radius,
      ),
      alignment: Alignment.center,
      child: Text(
        initial,
        style: TextStyle(
          color: Colors.white,
          fontSize: size * 0.5,
          fontWeight: FontWeight.w600,
        ),
      ),
    );
  }
}

// ── 酒行信息行 ────────────────────────────────────────────
class _ShopInfoRow extends StatelessWidget {
  final String label;
  final String value;
  const _ShopInfoRow({required this.label, required this.value});

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 6),
      child: Row(
        children: [
          SizedBox(
            width: 88,
            child: Text(label,
                style: const TextStyle(
                    fontSize: 14, color: AppTheme.textSecondary)),
          ),
          Expanded(
            child: Text(value,
                style: const TextStyle(
                    fontSize: 14, fontWeight: FontWeight.w500)),
          ),
        ],
      ),
    );
  }
}

// ── 编辑酒行信息弹窗 ─────────────────────────────────────
class _ShopEditDialog extends ConsumerStatefulWidget {
  final ShopInfo shop;
  final VoidCallback onSaved;
  const _ShopEditDialog({required this.shop, required this.onSaved});

  @override
  ConsumerState<_ShopEditDialog> createState() => _ShopEditDialogState();
}

class _ShopEditDialogState extends ConsumerState<_ShopEditDialog> {
  late final TextEditingController _nameCtrl;
  late final TextEditingController _addressCtrl;
  late final TextEditingController _phoneCtrl;
  late final TextEditingController _managerCtrl;
  late final TextEditingController _wechatCtrl;
  bool _saving = false;
  bool _uploadingLogo = false;

  @override
  void initState() {
    super.initState();
    _nameCtrl = TextEditingController(text: widget.shop.name);
    _addressCtrl = TextEditingController(text: widget.shop.address);
    _phoneCtrl = TextEditingController(text: widget.shop.phone);
    _managerCtrl = TextEditingController(text: widget.shop.managerName);
    _wechatCtrl = TextEditingController(text: widget.shop.wechatId);
  }

  @override
  void dispose() {
    _nameCtrl.dispose();
    _addressCtrl.dispose();
    _phoneCtrl.dispose();
    _managerCtrl.dispose();
    _wechatCtrl.dispose();
    super.dispose();
  }

  Future<void> _uploadLogo() async {
    final result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['jpg', 'jpeg', 'png'],
      withData: true,
    );
    if (result == null || result.files.isEmpty) return;
    final file = result.files.first;
    if (file.bytes == null) return;
    setState(() => _uploadingLogo = true);
    try {
      await ref.read(shopRepositoryProvider).uploadLogo(file.bytes!, file.name);
      ref.invalidate(shopInfoProvider);
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
          content: Text('Logo 已更新'),
          backgroundColor: AppTheme.success,
        ));
      }
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
          content: Text('上传失败：$e'),
          backgroundColor: AppTheme.danger,
        ));
      }
    } finally {
      if (mounted) setState(() => _uploadingLogo = false);
    }
  }

  Future<void> _save() async {
    setState(() => _saving = true);
    try {
      await ref.read(shopRepositoryProvider).updateInfo({
        'name': _nameCtrl.text.trim(),
        'address': _addressCtrl.text.trim(),
        'phone': _phoneCtrl.text.trim(),
        'manager_name': _managerCtrl.text.trim(),
        'wechat_id': _wechatCtrl.text.trim(),
      });
      if (mounted) {
        Navigator.of(context).pop();
        widget.onSaved();
        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
          content: Text('信息已更新'),
          backgroundColor: AppTheme.success,
        ));
      }
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
          content: Text('保存失败：$e'),
          backgroundColor: AppTheme.danger,
        ));
      }
    } finally {
      if (mounted) setState(() => _saving = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('编辑酒行信息'),
      content: SizedBox(
        width: context.dialogWidth(400),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // Logo 上传行
            Row(
              children: [
                _ShopLogoPreview(
                  logoUrl: ref.watch(shopInfoProvider).valueOrNull?.logoUrl ?? widget.shop.logoUrl,
                  shopName: _nameCtrl.text,
                  size: 56,
                ),
                const SizedBox(width: 12),
                OutlinedButton.icon(
                  onPressed: _uploadingLogo ? null : _uploadLogo,
                  icon: _uploadingLogo
                      ? const SizedBox(width: 14, height: 14, child: CircularProgressIndicator(strokeWidth: 2))
                      : const Icon(Icons.upload_outlined, size: 16),
                  label: const Text('更换 Logo'),
                ),
              ],
            ),
            const SizedBox(height: 16),
            TextField(
              controller: _nameCtrl,
              decoration: const InputDecoration(labelText: '门店名称'),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: _addressCtrl,
              decoration: const InputDecoration(labelText: '门店地址'),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: _phoneCtrl,
              decoration: const InputDecoration(labelText: '联系电话'),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: _managerCtrl,
              decoration: const InputDecoration(labelText: '负责人'),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: _wechatCtrl,
              decoration: const InputDecoration(
                labelText: '微信号（可选）',
                hintText: '填写后顾客扫码可查看',
              ),
            ),
          ],
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('取消'),
        ),
        ElevatedButton(
          onPressed: _saving ? null : _save,
          child: _saving
              ? const SizedBox(
                  width: 16,
                  height: 16,
                  child: CircularProgressIndicator(
                      strokeWidth: 2, color: Colors.white))
              : const Text('保存'),
        ),
      ],
    );
  }
}