MTMusic/lib/view/home_view.dart

import 'package:flutter/material.dart';
import 'package:flutter_swiper_view/flutter_swiper_view.dart';
import 'package:get/get.dart';
import 'package:music_player_miao/api/api_music_return.dart';
import 'package:music_player_miao/common_widget/app_data.dart';
import 'package:music_player_miao/models/search_bean.dart';
import 'package:music_player_miao/view/commend_view.dart';
import '../../view_model/home_view_model.dart';
import '../api/api_music_list.dart';
import '../common/download_manager.dart';
import '../common_widget/Song_widegt.dart';
import '../common_widget/list_cell.dart';
import '../models/getMusicList_bean.dart';
import 'music_view.dart';

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

  @override
  State<HomeView> createState() => _HomeViewState();
}

class _HomeViewState extends State<HomeView> {
  // 使用 GetX 框架的依赖注入，将 HomeViewModel 实例注册为 homeVM。
  // Get.put() 方法会创建 HomeViewModel 的实例，并将其保存在 GetX 的依赖管理器中，方便后续使用。
  final homeVM = Get.put(HomeViewModel());

  // 创建一个 TextEditingController，用于控制和监听搜索输入框的文本变化。
  // 这个控制器可以用于获取输入框的内容、清空输入框等操作。
  final TextEditingController _controller = TextEditingController();

  // 定义一个布尔变量 _isSearching，用于表示当前是否处于搜索状态。
  // 当用户在搜索框中输入内容时，_isSearching 会变为 true；当输入框为空时，_isSearching 会变为 false。
  bool _isSearching = false;
  final downloadManager = Get.put(DownloadManager());


  void initState() {
    super.initState();
    _fetchSonglistData();
  }
  List<Song> selectedSongs = [];
  Future<void> _fetchSonglistData() async {
    MusicListBean bean1 =
    await GetMusic().getMusic1(Authorization: AppData().currentToken);
    MusicListBean bean2 =
    await GetMusic().getMusic2(Authorization: AppData().currentToken);
    MusicListBean bean3 =
    await GetMusic().getMusic3(Authorization: AppData().currentToken);

    setState(() {
      selectedSongs = [
        Song(
            artistPic: bean1.coverPath!,
            title: bean1.name!,
            artist: bean1.singerName!,
            musicurl: bean1.musicPath!,
            pic: bean1.coverPath!,
            id: bean1.id!,
            likes: bean1.likeOrNot!,
            collection: bean1.collectOrNot!),
        Song(
            artistPic: bean2.coverPath!,
            title: bean2.name!,
            artist: bean2.singerName!,
            musicurl: bean2.musicPath!,
            pic: bean2.coverPath!,
            id: bean2.id!,
            likes: bean2.likeOrNot!,
            collection: bean2.collectOrNot!),
        Song(
            artistPic: bean3.coverPath!,
            title: bean3.name!,
            artist: bean3.singerName!,
            musicurl: bean3.musicPath!,
            pic: bean3.coverPath!,
            id: bean3.id!,
            likes: bean3.likeOrNot!,
            collection: bean3.collectOrNot!),
      ];
    });
  }


  ///轮播图
  List<Map> imgList = [
    {"image": "assets/img/banner.png"},
    {"image": "assets/img/banner.png"},
    {"image": "assets/img/banner.png"},
  ];

  List<Song> _filteredData = [];

  Future<void> _filterData(String query) async {
    if (query.isNotEmpty) {
      try {
        // 发起搜索请求
        SearchBean bean = await SearchMusic().search(
          keyword: query,
          Authorization: AppData().currentToken,
        );

        // 如果请求成功且返回的数据不为空
        if (bean.code == 200 && bean.data != null) {
          // 创建一个临时列表来存储所有异步请求
          List<Future<Song?>> songDetailsFutures = [];

          // 循环处理每个搜索结果，通过 id 请求详细信息
          for (var data in bean.data!) {
            if (data.id != null) {  // 确保 id 不为 null
              // 使用每个歌曲的 id 获取详细信息，并返回一个 Future
              songDetailsFutures.add(
                  GetMusicDetail().getMusicDetail(
                    songId: data.id!,
                    Authorization: AppData().currentToken,
                  ).then((details) {
                    if (details != null) {
                      // 将详细歌曲信息封装成 Song 对象
                      return Song(
                        artistPic: details.artistPic ?? '',  // 歌手封面图
                        title: data.name ?? '',  // 歌曲名称
                        artist: details.artist ?? '',  // 歌手名称
                        musicurl: details.musicurl ?? '',  // 歌曲路径
                        pic: details.pic ?? '',  // 封面图片路径
                        id: details.id,  // 歌曲 ID
                        likes: details.likes,  // 是否喜欢
                        collection: details.collection,  // 是否收藏
                      );
                    }
                    return null;  // 如果没有详情返回 null
                  }).catchError((error) {
                    print("Error occurred while fetching song details: $error");
                    return null;  // 异常处理，返回 null
                  })
              );
            } else {
              print("Song ID is null for song: ${data.name}");
            }
          }

          // 使用 Future.wait 等待所有异步请求完成
          List<Song?> songDetailsList = await Future.wait(songDetailsFutures);

          // 过滤掉 null 值
          List<Song> validSongDetails = songDetailsList.where((song) => song != null).cast<Song>().toList();

          // 最后更新 UI，一次性更新 _filteredData
          setState(() {
            _filteredData = validSongDetails;  // 更新搜索结果
            _isSearching = true;  // 设置正在搜索中
          });

          // 打印最终结果
          print("Filtered Data: $_filteredData");
        } else {
          setState(() {
            _filteredData = [];
            _isSearching = false;
          });
        }
      } catch (error) {
        print("Error occurred during search: $error");
        setState(() {
          _filteredData = [];
          _isSearching = false;
        });
      }
    } else {
      setState(() {
        _filteredData = [];
        _isSearching = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    ///轮播图
    var MySwiperWidget = Swiper(
      itemBuilder: (BuildContext context, int index) {
        //每次循环遍历时，将i赋值给index
        return new Image.asset(
          imgList[index]['image'],
          fit: BoxFit.fill,
        );
      },
      itemCount: imgList.length,
      //指示器
      pagination: SwiperPagination(
        builder: DotSwiperPaginationBuilder(
          color: Colors.white.withOpacity(0.85), // Color of inactive dots
          activeColor: const Color(0xff429482), // Color of active dot
        ),
      ),
      // autoplay: true,
      autoplayDelay: 3000,
    );
    return Container(
      decoration: const BoxDecoration(
        image: DecorationImage(
          image: AssetImage("assets/img/app_bg.png"),
          fit: BoxFit.cover,
        ),
      ),
      child: Scaffold(
        resizeToAvoidBottomInset: false,
        backgroundColor: Colors.transparent,
        body: SingleChildScrollView(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              ///头部
              Container(
                padding: const EdgeInsets.only(left: 20, top: 50),
                child: const Row(
                  crossAxisAlignment: CrossAxisAlignment.end,
                  children: [
                    Text(
                      '喵听',
                      style:
                      TextStyle(fontSize: 35, fontWeight: FontWeight.bold),
                    ),
                    SizedBox(
                      width: 10,
                    ),
                    Text(
                      '你的云端音乐库',
                      style:
                      TextStyle(fontSize: 20, fontWeight: FontWeight.w500),
                    ),
                  ],
                ),
              ),

              ///搜索
              Container(
                padding: const EdgeInsets.only(left: 20, right: 20, top: 10),
                child: Column(
                  children: [
                    Container(
                      height: 38,
                      decoration: BoxDecoration(
                        color: const Color(0xffF9F2AF),
                        borderRadius: BorderRadius.circular(19),
                        boxShadow: const [
                          BoxShadow(
                            color: Colors.black26,
                            offset: Offset(0, 1),
                            blurRadius: 0.1,
                          )
                        ],
                      ),
                      child: TextField(
                        controller: _controller,
                        onChanged: (query) {
                          setState(() async {
                            _filterData(query);
                          });
                        },
                        decoration: InputDecoration(
                          focusedBorder: InputBorder.none,
                          enabledBorder: InputBorder.none,
                          errorBorder: InputBorder.none,
                          contentPadding: const EdgeInsets.symmetric(
                            vertical: 4,
                            horizontal: 20,
                          ),
                          prefixIcon: Container(
                            margin: const EdgeInsets.only(left: 20),
                            alignment: Alignment.centerLeft,
                            width: 30,
                            child: Image.asset(
                              "assets/img/home_search.png",
                              width: 20,
                              height: 20,
                              fit: BoxFit.contain,
                            ),
                          ),
                          hintText: "大家都在搜《背对背拥抱》",
                          hintStyle: const TextStyle(
                            color: Color(0xffA5A5A5),
                            fontSize: 13,
                          ),
                        ),
                      ),
                    ),
                    if (_isSearching)
                      Container(
                        height: 150,
                        width: 345,
                        decoration: BoxDecoration(
                          color: const Color(0xffF9F2AF).withOpacity(0.7),
                        ),
                        child: ListView.builder(
                          padding: EdgeInsets.zero,
                          itemCount: _filteredData.length,
                          itemBuilder: (context, index) {
                            return ListTile(
                              title: Text(_filteredData[index].title),
                              onTap: () {
                                // 用户点击列表项时，执行以下操作：
                                Navigator.push(
                                  // 使用 Navigator 进行页面跳转
                                  context,
                                  MaterialPageRoute(
                                    // 创建一个新的页面（MusicView），并将当前歌曲和索引作为参数传递给它
                                    builder: (context) => MusicView(
                                      songList: _filteredData,  // 传递当前列表项对应的歌曲对象，包含歌曲的详细信息
                                      initialSongIndex: index,  // 传递当前歌曲在歌曲列表中的索引，用于在新页面中显示或操作
                                    ),
                                  ),
                                );
                              },
                            );
                          },
                        ),
                      ),
                  ],
                ),
              ),

              ///推荐+轮播图
              Container(
                padding: const EdgeInsets.only(left: 20, right: 20, top: 10),
                child: const Text(
                  '每日推荐',
                  style: TextStyle(fontSize: 22, fontWeight: FontWeight.w500),
                ),
              ),
              Container(
                padding: const EdgeInsets.only(left: 20, right: 20, top: 5),
                height: 186,
                width: double.infinity,
                child: MySwiperWidget,
              ),

              ///精选歌曲
              Container(
                alignment: Alignment.topLeft,
                padding: const EdgeInsets.only(left: 20, right: 20, top: 5),
                child: const Text(
                  '精选歌曲',
                  style: TextStyle(fontSize: 22, fontWeight: FontWeight.w500),
                ),
              ),
              ListView.builder(
                padding: EdgeInsets.zero,
                itemCount: selectedSongs.length,
                physics: const NeverScrollableScrollPhysics(),
                shrinkWrap: true,
                itemBuilder: (context, index) {
                  return ListTile(
                    leading: Image.network(selectedSongs[index].pic),
                    title: Text(
                      selectedSongs[index].title,
                      style: const TextStyle(fontSize: 18, color: Colors.black),
                    ),
                    subtitle: Text(
                      selectedSongs[index].artist,
                      style: const TextStyle(fontSize: 16, color: Colors.black),
                    ),
                    trailing: InkWell(
                      onTap: () {
                        _bottomSheet(context, index);
                      },
                      child: Image.asset('assets/img/More.png'),
                    ),
                    onTap: () {
                      Navigator.push(
                        context,
                        MaterialPageRoute(
                          builder: (context) => MusicView(
                            songList: selectedSongs,
                            initialSongIndex: index,
                            onSongStatusChanged: (index, isCollected, isLiked) {
                              setState(() {
                                // 更新父组件中的数据
                                selectedSongs[index].collection = isCollected;
                                selectedSongs[index].likes = isLiked;
                                downloadManager.updateSongInfo(selectedSongs[index].id, isCollected, isLiked);
                              });
                            },
                          ),
                        ),
                      );
                    },
                  );
                },
              ),

              ///精选歌单
              Container(
                padding: const EdgeInsets.only(left: 20, right: 20, top: 5),
                child: const Text(
                  '精选歌单',
                  style: TextStyle(fontSize: 22, fontWeight: FontWeight.w500),
                ),
              ),
              SizedBox(
                height: 180,
                child: ListView.builder(
                    scrollDirection: Axis.horizontal,
                    shrinkWrap: true,
                    padding: const EdgeInsets.only(left: 20),
                    itemCount: homeVM.listArr.length,
                    itemBuilder: (context, index) {
                      var sObj = homeVM.listArr[index];
                      return ListRow(
                        sObj: sObj,
                        onPressed: () {},
                        onPressedPlay: () {},
                      );
                    }),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future _bottomSheet(BuildContext context, int index) {
    return showModalBottomSheet(
      context: context,
      backgroundColor: Colors.white,
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(30)),
      ),
      builder: (context) => StatefulBuilder( // 使用StatefulBuilder以便动态修改状态
        builder: (context, setState) {
          bool likesnot = false; // 初始状态，假设未点赞

          return Container(
            height: 150,
            padding: const EdgeInsets.only(top: 20),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.stretch,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                  children: [
                    Column(
                      children: [
                        IconButton(
                          onPressed: () {},
                          icon: Image.asset("assets/img/list_add.png"),
                          iconSize: 60,
                        ),
                        const Text("加入歌单"),
                      ],
                    ),
                    Column(
                      children: [
                        IconButton(
                          onPressed: () {},
                          icon: Image.asset("assets/img/list_download.png"),
                          iconSize: 60,
                        ),
                        const Text("下载"),
                      ],
                    ),
                    Column(
                      children: [
                        IconButton(
                          onPressed: () {},
                          icon: Image.asset("assets/img/list_collection.png"),
                          iconSize: 60,
                        ),
                        const Text("收藏"),
                      ],
                    ),
                    Column(
                      children: [
                        IconButton(
                          onPressed: (){},
                          icon: Image.asset("assets/img/list_good.png"),
                          iconSize: 60,
                        ),
                        Text("点赞")
                      ],
                    ),
                    Column(
                      children: [
                        IconButton(
                          onPressed: () {
                            Get.to(() => CommentView(
                              initialSongIndex: index,
                            ));
                          },
                          icon: Image.asset("assets/img/list_comment.png"),
                          iconSize: 60,
                        ),
                        const Text("评论"),
                      ],
                    ),
                  ],
                ),
              ],
            ),
          );
        },
      ),
    );
  }
}