Spark
2 weeks ago
parent
5a0540924d
commit
91386b243f
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After Width: | Height: | Size: 356 B |
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description: This file stores settings for Dart & Flutter DevTools.
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documentation: https://docs.flutter.dev/tools/devtools/extensions#configure-extension-enablement-states
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extensions:
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import 'dart:convert';
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import 'dart:io';
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import 'package:get/get.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../api/api_download.dart';
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import '../common_widget/Song_widegt.dart';
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import 'package:path/path.dart' as path;
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class DownloadItem {
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final Song song;
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double progress;
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bool isCompleted;
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bool isDownloading;
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DownloadItem({
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required this.song,
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this.progress = 0.0,
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this.isCompleted = false,
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this.isDownloading = false,
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});
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Map<String, dynamic> toJson() {
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return {
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'song': {
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'pic': song.pic,
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'artistPic': song.artistPic,
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'title': song.title,
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'artist': song.artist,
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'musicurl': song.musicurl,
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'id': song.id,
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'likes': song.likes,
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'collection': song.collection
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},
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'progress': progress,
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'isCompleted': isCompleted,
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'isDownloading': isDownloading,
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};
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}
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// 从JSON创建DownloadItem
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factory DownloadItem.fromJson(Map<String, dynamic> json) {
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return DownloadItem(
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song: Song(
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pic: json['song']['pic'],
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artistPic: json['song']['artistPic'],
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title: json['song']['title'],
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artist: json['song']['artist'],
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musicurl: json['song']['musicurl'],
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id: json['song']['id'],
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likes: json['song']['likes'],
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collection: json['song']['collection'],
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),
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progress: json['progress'],
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isCompleted: json['isCompleted'],
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isDownloading: json['isDownloading'],
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);
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}
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}
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class DownloadManager extends GetxController {
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static const String PREFS_KEY = 'downloads_data';
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final _downloads = <String, DownloadItem>{}.obs;
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final downloadApi = DownloadApi();
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late SharedPreferences _prefs;
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@override
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void onInit() async {
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super.onInit();
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await _initPrefs();
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}
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Future<void> _initPrefs() async {
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_prefs = await SharedPreferences.getInstance();
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await _loadDownloadsFromPrefs();
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}
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// 从SharedPreferences加载数据
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Future<void> _loadDownloadsFromPrefs() async {
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final String? downloadsJson = _prefs.getString(PREFS_KEY);
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if (downloadsJson != null) {
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final Map<String, dynamic> downloadsMap = json.decode(downloadsJson);
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downloadsMap.forEach((key, value) {
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_downloads[key] = DownloadItem.fromJson(value);
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});
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}
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}
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// 保存数据到SharedPreferences
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Future<void> _saveDownloadsToPrefs() async {
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final Map<String, dynamic> downloadsMap = {};
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_downloads.forEach((key, value) {
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downloadsMap[key] = value.toJson();
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});
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await _prefs.setString(PREFS_KEY, json.encode(downloadsMap));
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}
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List<Song> getLocalSongs() {
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final localSongs = <Song>[];
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_downloads.forEach((key, value) {
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if (value.isCompleted) {
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localSongs.add(value.song);
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}
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});
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return localSongs;
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}
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Map<String, DownloadItem> get downloads => _downloads;
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bool isDownloading(int id) => _downloads[id.toString()]?.isDownloading ?? false;
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bool isCompleted(int id) => _downloads[id.toString()]?.isCompleted ?? false;
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double getProgress(int id) => _downloads[id.toString()]?.progress ?? 0.0;
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Song? getLocalSong(int id) {
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final downloadItem = _downloads[id.toString()];
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if (downloadItem?.isCompleted ?? false) {
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return downloadItem!.song;
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}
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return null;
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}
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bool removeSong(int id) {
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if (_downloads[id.toString()]?.isCompleted ?? false) {
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File file = File.fromUri(Uri.parse(_downloads[id.toString()]!.song.musicurl));
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file.deleteSync();
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_downloads.remove(id.toString());
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_saveDownloadsToPrefs();
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return true;
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}
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return false;
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}
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int completedNumber() {
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int count = 0;
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_downloads.forEach((key, value) {
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if (value.isCompleted) {
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count++;
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}
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});
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return count;
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}
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Future<void> startDownload({
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required Song song,
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required context,
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}) async {
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if (_downloads[song.id.toString()]?.isDownloading ?? false) return;
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final fileName = '${song.id}_${song.title}_${song.artist}';
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final downloadItem = DownloadItem(
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song: song,
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isDownloading: true,
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);
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_downloads[song.id.toString()] = downloadItem;
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try {
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final filePath = await downloadApi.downloadMusic(
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musicUrl: song.musicurl,
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name: fileName,
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context: context,
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onProgress: (progress) {
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downloadItem.progress = progress;
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_downloads[song.id.toString()] = downloadItem;
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},
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);
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if (filePath != null) {
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downloadItem.isCompleted = true;
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downloadItem.isDownloading = false;
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downloadItem.progress = 1.0;
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song.musicurl = _getLocalAudioPath(fileName, song.musicurl);
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print(song.musicurl);
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} else {
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downloadItem.isDownloading = false;
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downloadItem.progress = 0.0;
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}
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} catch (e) {
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print('Download error: $e');
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downloadItem.isDownloading = false;
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downloadItem.progress = 0.0;
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}
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_downloads[song.id.toString()] = downloadItem;
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await _saveDownloadsToPrefs();
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}
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String _getFileExtension(String url) {
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// Remove query parameters
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final urlWithoutQuery = url.split('?').first;
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// Get the extension including the dot
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final extension = path.extension(urlWithoutQuery);
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return extension.isNotEmpty ? extension : '.mp3'; // Default to .mp3 if no extension found
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}
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String _getLocalAudioPath(String fileName, String url) {
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final extension = _getFileExtension(url);
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final fullFileName = '$fileName$extension';
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return path.join('/storage/emulated/0/MTMusic', fullFileName);
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}
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}
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@ -1,12 +1,20 @@
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class Song {
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class Song {
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final String pic;
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String pic;
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final String artistPic;
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String artistPic;
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final String title;
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String title;
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final String artist;
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String artist;
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final String musicurl;
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String musicurl;
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final int id;
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int id;
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final bool likes;
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bool likes;
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final bool collection;
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bool collection;
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Song({required this.pic,required this.artistPic,required this.title, required this.artist, required this.musicurl,required this.id,required this.likes,required this.collection});
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Song(
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{required this.pic,
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required this.artistPic,
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required this.title,
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required this.artist,
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required this.musicurl,
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required this.id,
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required this.likes,
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required this.collection});
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}
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}
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