ProfilePage

class ProfilePage extends ConsumerStatefulWidget {
  final String? userId;

  const ProfilePage({super.key, this.userId});

  @override
  ConsumerState<ProfilePage> createState() => _ProfilePageState();
}

class _ProfilePageState extends ConsumerState<ProfilePage>
    with SingleTickerProviderStateMixin {
  late final TabController _tabController;

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: 3, vsync: this);
  }

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

  @override
  Widget build(BuildContext context) {
    final colorScheme = Theme.of(context).colorScheme;

    final currentUserId = AuthRepository().currentUser?.id;
    final targetUserId = widget.userId ?? currentUserId;
    final isCurrentUser = targetUserId == currentUserId;

    final profile = ref.watch(cachedProfileProvider);

    return Scaffold(
      backgroundColor: colorScheme.surface,
      body: NestedScrollView(
        headerSliverBuilder: (context, innerBoxScrolled) {
          return [
            _ProfileAppBar(),
            SliverPadding(
              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
              sliver: SliverToBoxAdapter(
                child: _ProfileHeader(),
              ),
            ),
            SliverPersistentHeader(
              pinned: true,
              delegate: _SliverAppBarDelegate(
                TabBar(
                  controller: _tabController,
                  tabs: const [
                    Tab(text: 'Profile'),
                    Tab(text: 'Private'),
                    Tab(text: 'Settings'),
                  ],
                ),
              ),
            ),
          ];
        },
        body: TabBarView(
          controller: _tabController,
          children: [
            TabViewTab(
              children: [
                _ProfileBio(),
                ActivityCard(),
                DietaryInfoCard(),
              ],
            ),
            TabViewTab(
              children: [PrivateInfoCard()],
            ),
            TabViewTab(
              children: [Text('Settings')],
            ),
          ],
        ),
      ),
    );
  }
}