import 'dart:async';

import 'package:flutter/material.dart';
import '../constants/app_constants.dart';
import '../views/footprint/liked_poetry_manager.dart';
import '../widgets/tabbed_nav_app_bar.dart';
import 'active/active_search_page.dart';
import 'footprint/all_list.dart';
import 'footprint/collect_notes.dart';
import 'footprint/local_jilu.dart';

/// 时间: 2026-03-22
/// 功能: 收藏页面
/// 介绍: 展示用户收藏的内容，支持分类管理和搜索
/// 最新变化: 笔记列表组件独立到 local_jilu.dart

class FavoritesPage extends StatefulWidget {
  const FavoritesPage({super.key});

  @override
  State<FavoritesPage> createState() => _FavoritesPageState();
}

class _FavoritesPageState extends State<FavoritesPage>
    with SingleTickerProviderStateMixin {
  late TabController _tabController;
  final List<String> _categories = ['全部', '点赞', '笔记', '推送', '关注进度'];
  final TextEditingController _searchBarController = TextEditingController();
  bool _isGridView = true;

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

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: TabbedNavAppBar.build(
        title: '收藏',
        tabController: _tabController,
        tabLabels: _categories,
        tabBarScrollable: true,
        tabLabelPadding: const EdgeInsets.symmetric(horizontal: 10),
        actions: [
          IconButton(
            icon: Icon(_isGridView ? Icons.view_list : Icons.grid_view),
            onPressed: _toggleViewMode,
          ),
          IconButton(
            icon: const Icon(Icons.filter_list),
            onPressed: _showFilterOptions,
          ),
        ],
      ),
      body: Column(
        children: [
          _buildSearchBar(),
          Expanded(
            child: TabBarView(
              controller: _tabController,
              children: _categories
                  .map((category) => _buildFavoriteList(category))
                  .toList(),
            ),
          ),
        ],
      ),
      floatingActionButton: _buildFloatingButton(),
      floatingActionButtonLocation: FloatingActionButtonLocation.miniEndFloat,
    );
  }

  Widget _buildFloatingButton() {
    final currentIndex = _tabController.index;
    final currentCategory = _categories[currentIndex];

    if (currentCategory != '笔记') {
      return const SizedBox.shrink();
    }

    return FloatingActionButton(
      onPressed: () {
        Navigator.of(context).push(
          MaterialPageRoute<void>(builder: (_) => const CollectNotesPage()),
        );
      },
      child: const Icon(Icons.add),
      backgroundColor: AppConstants.primaryColor,
      heroTag: 'notes_fab',
      elevation: 4,
    );
  }

  Widget _buildSearchBar() {
    return Container(
      margin: EdgeInsets.fromLTRB(
        AppConstants.pageHorizontalPadding,
        0,
        AppConstants.pageHorizontalPadding,
        16,
      ),
      decoration: BoxDecoration(
        color: Colors.grey[100],
        borderRadius: BorderRadius.circular(12),
      ),
      child: TextField(
        controller: _searchBarController,
        readOnly: true,
        onTap: () {
          Navigator.of(context).push(
            MaterialPageRoute<void>(
              builder: (_) => ActiveSearchPage(
                initialQuery: _searchBarController.text.trim().isEmpty
                    ? null
                    : _searchBarController.text.trim(),
              ),
            ),
          );
        },
        decoration: InputDecoration(
          hintText: '点按搜索全站诗词…',
          prefixIcon: const Icon(Icons.search, color: Colors.grey),
          suffixIcon: Icon(Icons.chevron_right, color: Colors.grey[500]),
          border: InputBorder.none,
          contentPadding: const EdgeInsets.symmetric(
            horizontal: 16,
            vertical: 12,
          ),
        ),
      ),
    );
  }

  Widget _buildFavoriteList(String category) {
    // 如果是"全部"标签，显示统一的收藏列表（点赞+笔记）
    if (category == '全部') {
      return const AllListPage();
    }

    // 如果是"点赞"标签，显示点赞内容管理器
    if (category == '点赞') {
      return const LikedPoetryManager();
    }

    // 如果是"笔记"标签，显示笔记列表
    if (category == '笔记') {
      return const LocalNotesList();
    }

    // 其他标签显示占位内容，但支持下拉刷新
    return RefreshIndicator(
      onRefresh: () async {
        // 模拟刷新其他分类数据
        await Future.delayed(const Duration(milliseconds: 500));
      },
      child: _buildPlaceholderContent(category),
    );
  }

  Widget _buildPlaceholderContent(String category) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Icon(Icons.category_outlined, size: 64, color: Colors.grey[400]),
          const SizedBox(height: 16),
          Text(
            '$category功能暂未开放',
            style: TextStyle(fontSize: 16, color: Colors.grey[600]),
          ),
          const SizedBox(height: 8),
          Text(
            '敬请期待后续更新',
            style: TextStyle(fontSize: 14, color: Colors.grey[500]),
          ),
        ],
      ),
    );
  }

  void _toggleViewMode() {
    setState(() {
      _isGridView = !_isGridView;
    });
  }

  void _showFilterOptions() {
    showModalBottomSheet(
      context: context,
      builder: (context) => Container(
        padding: const EdgeInsets.all(16),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text(
              '筛选选项',
              style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
            ),
            const SizedBox(height: 16),
            ListTile(
              leading: const Icon(Icons.date_range),
              title: const Text('按时间排序'),
              onTap: () {
                Navigator.pop(context);
                ScaffoldMessenger.of(
                  context,
                ).showSnackBar(const SnackBar(content: Text('按时间排序')));
              },
            ),
            ListTile(
              leading: const Icon(Icons.title),
              title: const Text('按标题排序'),
              onTap: () {
                Navigator.pop(context);
                ScaffoldMessenger.of(
                  context,
                ).showSnackBar(const SnackBar(content: Text('按标题排序')));
              },
            ),
          ],
        ),
      ),
    );
  }

  void _showFavoriteDetails(BuildContext context, int index, String category) {
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: Text('$category详情'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text('分类: $category'),
            const SizedBox(height: 8),
            Text('收藏时间: ${(index + 1) * 2}天前'),
            const SizedBox(height: 8),
            const Text('这是收藏内容的详细信息。'),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(),
            child: const Text('关闭'),
          ),
        ],
      ),
    );
  }

  void _handleFavoriteAction(String action, int index) {
    switch (action) {
      case 'share':
        ScaffoldMessenger.of(
          context,
        ).showSnackBar(SnackBar(content: Text('分享了收藏${index + 1}')));
        break;
      case 'edit':
        ScaffoldMessenger.of(
          context,
        ).showSnackBar(SnackBar(content: Text('编辑了收藏${index + 1}')));
        break;
      case 'delete':
        _showDeleteConfirm(index);
        break;
    }
  }

  void _showDeleteConfirm(int index) {
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: const Text('确认删除'),
        content: Text('确定要删除收藏${index + 1}吗？'),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(),
            child: const Text('取消'),
          ),
          TextButton(
            onPressed: () {
              Navigator.of(context).pop();
              ScaffoldMessenger.of(
                context,
              ).showSnackBar(SnackBar(content: Text('已删除收藏${index + 1}')));
            },
            child: const Text('删除', style: TextStyle(color: Colors.red)),
          ),
        ],
      ),
    );
  }
}