pangolin/client/lib/widgets/nav_sidebar.dart

// nav_sidebar.dart — desktop/tablet 左侧栏导航
//
// 对照 ui_kits/desktop/dapp.jsx：宽 204、bgSubtle 底 + 右边框；
// 品牌区(mark28 + 穿山甲 + PANGOLIN) → NavItem 列表 → Spacer → 套餐卡。
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../pangolin_theme.dart';
import '../state/app_providers.dart';
import '../state/navigation_provider.dart';
import 'pangolin_logo.dart';
import 'plan_badge_card.dart';

typedef NavSidebarItem = ({IconData icon, String label, NavView view});

class NavSidebar extends ConsumerWidget {
  const NavSidebar({super.key, required this.items, this.width = 204, this.dense = true});

  final List<NavSidebarItem> items;
  final double width;

  /// dense=true 桌面紧凑(行高~36)；dense=false 平板触控(行高≥48, 字号更大)。
  final bool dense;

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final c = context.pangolin;
    final t = ref.watch(appTextProvider);
    final current = ref.watch(navViewProvider);

    return Container(
      width: width,
      decoration: BoxDecoration(
        color: c.bgSubtle,
        border: Border(right: BorderSide(color: c.border)),
      ),
      padding: EdgeInsets.fromLTRB(dense ? 12 : 14, dense ? 14 : 18, dense ? 12 : 14, dense ? 14 : 16),
      child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
        // 品牌区
        Padding(
          padding: EdgeInsets.fromLTRB(6, 2, 6, dense ? 16 : 20),
          child: Row(children: [
            PangolinMark(size: dense ? 28 : 30),
            SizedBox(width: dense ? 9 : 10),
            Column(crossAxisAlignment: CrossAxisAlignment.start, mainAxisSize: MainAxisSize.min, children: [
              Text(t.brand,
                  style: PangolinText.h3.copyWith(
                      color: c.fg1, fontWeight: FontWeight.w700, fontSize: dense ? 16 : 17, height: 1)),
              const SizedBox(height: 3),
              Text('PANGOLIN',
                  style: PangolinText.caption.copyWith(
                      color: c.accent, fontWeight: FontWeight.w600, fontSize: 9, letterSpacing: 1.6)),
            ]),
          ]),
        ),
        // Nav 列表
        for (final item in items)
          Padding(
            padding: EdgeInsets.only(bottom: dense ? 3 : 4),
            child: _NavItem(
              icon: item.icon,
              label: item.label,
              active: current == item.view,
              dense: dense,
              onTap: () => ref.read(navViewProvider.notifier).state = item.view,
            ),
          ),
        const Spacer(),
        const PlanBadgeCard(),
      ]),
    );
  }
}

class _NavItem extends StatelessWidget {
  const _NavItem({required this.icon, required this.label, required this.active, required this.onTap, this.dense = true});
  final IconData icon;
  final String label;
  final bool active;
  final VoidCallback onTap;
  final bool dense;

  @override
  Widget build(BuildContext context) {
    final c = context.pangolin;
    return Material(
      color: active ? c.accentSubtle : Colors.transparent,
      borderRadius: BorderRadius.circular(PangolinRadius.md),
      clipBehavior: Clip.antiAlias,
      child: InkWell(
        onTap: onTap,
        child: ConstrainedBox(
          constraints: BoxConstraints(minHeight: dense ? 0 : 48),
          child: Padding(
            padding: EdgeInsets.symmetric(horizontal: dense ? 12 : 14, vertical: dense ? 9 : 13),
            child: Row(children: [
              Icon(icon, size: dense ? 18 : 20, color: active ? c.accent : c.fg3),
              SizedBox(width: dense ? 11 : 12),
              Text(label,
                  style: PangolinText.sm.copyWith(
                      color: active ? c.accent : c.fg2,
                      fontSize: dense ? 13.5 : 15,
                      fontWeight: active ? (dense ? FontWeight.w600 : FontWeight.w700) : FontWeight.w500)),
            ]),
          ),
        ),
      ),
    );
  }
}