flutter/lib/pages/search/index.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:loopin/components/my_toast.dart';
import '../../behavior/custom_scroll_behavior.dart';

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

  @override
  State<SearchPage> createState() => _SearchPageState();
}

class _SearchPageState extends State<SearchPage> {
  final TextEditingController _searchController = TextEditingController();
  final GetStorage _storage = GetStorage();
  List<dynamic> _searchHistory = [];
  @override
  void initState() {
    super.initState();
    _loadSearchHistory();
  }

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

  // 加载搜索历史
  void _loadSearchHistory() {
    setState(() {
      _searchHistory = _storage.read('searchHistory') ?? [];
    });
  }

  // 保存搜索历史
  void _saveSearchHistory() {
    _storage.write('searchHistory', _searchHistory);
  }

  // 添加搜索项
  void _addSearchItem(String query) {
    if (query.trim().isEmpty) return;

    setState(() {
      // 移除重复项
      _searchHistory.remove(query);
      // 添加到开头
      _searchHistory.insert(0, query);
      // 暂时限制历史记录数量未10条
      if (_searchHistory.length > 10) {
        _searchHistory = _searchHistory.sublist(0, 10);
      }
    });
    _saveSearchHistory();
  }

  // 清除单个搜索历史
  void _removeSearchItem(int index) {
    setState(() {
      _searchHistory.removeAt(index);
    });
    _saveSearchHistory();
  }

  // 清除所有搜索历史
  void _clearAllHistory() {
    setState(() {
      _searchHistory.clear();
    });
    _saveSearchHistory();

    MyToast().tip(
      title: '搜索历史已清除',
      position: 'center',
      type: 'success',
    );
  }

  // 执行搜索
  void _performSearch() {
    final searchWords = _searchController.text.trim();
    if (searchWords.isNotEmpty) {
      _addSearchItem(searchWords);
      _searchController.clear();
      FocusScope.of(context).unfocus();
      // 去搜索结果页，支持带着搜索文字和搜索tab索引
      Get.toNamed('/search-result', arguments: searchWords);
    } else {
      MyToast().tip(
        title: '请输入搜索内容',
        position: 'center',
        type: 'error',
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      appBar: AppBar(
        centerTitle: true,
        backgroundColor: Colors.black,
        foregroundColor: Colors.white,
        elevation: 0,
        title: Container(
          height: 40,
          decoration: BoxDecoration(
            color: Colors.grey[900],
            borderRadius: BorderRadius.circular(20),
          ),
          child: TextField(
            controller: _searchController,
            style: const TextStyle(color: Colors.white, fontSize: 16),
            decoration: InputDecoration(
              hintText: '请输入内容~',
              hintStyle: TextStyle(color: Colors.grey[500], fontSize: 16),
              border: InputBorder.none,
              prefixIcon: Icon(Icons.search, color: Colors.grey[500], size: 20),
              suffixIcon: _searchController.text.isNotEmpty
                  ? IconButton(
                      icon: Icon(Icons.close, color: Colors.grey[500], size: 20),
                      onPressed: () {
                        _searchController.clear();
                        setState(() {});
                      },
                    )
                  : null,
              contentPadding: const EdgeInsets.symmetric(vertical: 10),
            ),
            onSubmitted: (_) => _performSearch(),
            onChanged: (_) => setState(() {}),
          ),
        ),
        actions: [
          TextButton(
            onPressed: _performSearch,
            child: const Text('搜索', style: TextStyle(color: Colors.white, fontSize: 16)),
          ),
        ],
      ),
      body: ScrollConfiguration(
        behavior: CustomScrollBehavior().copyWith(scrollbars: false),
        child: SingleChildScrollView(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // 搜索历史
              if (_searchHistory.isNotEmpty) ...[
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text(
                      '搜索历史',
                      style: TextStyle(
                        color: Colors.white,
                        fontSize: 18,
                        fontWeight: FontWeight.bold
                      ),
                    ),
                    TextButton(
                      onPressed: _clearAllHistory,
                      child: const Text(
                        '清除所有',
                        style: TextStyle(color: Colors.grey, fontSize: 14),
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 12),
                Wrap(
                  spacing: 8,
                  runSpacing: 8,
                  children: List.generate(_searchHistory.length, (index) {
                    return GestureDetector(
                      onTap: () {
                        _searchController.text = _searchHistory[index];
                        _performSearch();
                      },
                      child: Container(
                        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                        decoration: BoxDecoration(
                          color: Colors.grey[800],
                          borderRadius: BorderRadius.circular(20),
                        ),
                        child: Row(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            Text(
                              _searchHistory[index],
                              style: const TextStyle(color: Colors.white),
                            ),
                            const SizedBox(width: 6),
                            GestureDetector(
                              onTap: () => _removeSearchItem(index),
                              child: Icon(Icons.close, size: 16, color: Colors.grey[500]),
                            ),
                          ],
                        ),
                      ),
                    );
                  }),
                ),
                const SizedBox(height: 24),
              ],
            ],
          ),
        ),
      ),
    );
  }
}