142 lines
5.8 KiB
Swift
142 lines
5.8 KiB
Swift
//
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// MP_DownloadManager.swift
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// MusicPlayer
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//
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// Created by 忆海16 on 2024/5/14.
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//
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import Foundation
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import Foundation
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import Tiercel
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class DownloadManager: NSObject {
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static let shared = DownloadManager()
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var session: SessionManager!
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var progressHandlers: [URL: (CGFloat) -> Void] = [:]
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var completionHandlers: [URL: (Result<MPPositive_SongItemModel, Error>) -> Void] = [:]
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var downloadTasks: [URL: URLSessionDownloadTask] = [:]
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var progressStorage: [URL: CGFloat] = [:] // 新增进度存储
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var songHandlers:[URL: MPPositive_SongItemModel] = [:]
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private override init() {
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super.init()
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var configuration = SessionConfiguration()
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configuration.timeoutIntervalForRequest = 60
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configuration.maxConcurrentTasksLimit = 6
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configuration.allowsCellularAccess = true
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session = SessionManager("com.yourApp.backgroundDownload", configuration: configuration)
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}
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func downloadVideo(from url: URL, song:MPPositive_SongItemModel, progressHandler: @escaping (CGFloat) -> Void, completion: @escaping (Result<MPPositive_SongItemModel, Error>) -> Void) {
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progressHandlers[url] = progressHandler
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completionHandlers[url] = completion
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songHandlers[url] = song
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let downloadTask = session.download(url, headers: ["Accept-Encoding": "gzip, deflate"])
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//配置进度条
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downloadTask?.progress(handler: { [weak self] (task) in
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guard let self = self else {return}
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progressHandlers[task.url]?(task.progress.fractionCompleted)
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progressStorage[task.url] = task.progress.fractionCompleted
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})
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//配置任务完成事件
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downloadTask?.success(handler: { [weak self] (task) in
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guard let self = self else {return}
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//任务下载成功,进行文件转移
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let originalURL = task.url
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//任务下载地址
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let filePathUrl:URL = URL(fileURLWithPath: task.filePath)
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print("任务下载地址:\(filePathUrl)")
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let downloadsURL = DocumentsURL.appendingPathComponent("Downloads")
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if !FileManager.default.fileExists(atPath: downloadsURL.path) {
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do {
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try FileManager.default.createDirectory(at: downloadsURL, withIntermediateDirectories: true, attributes: nil)
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} catch {
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completionHandlers[originalURL]?(.failure(error))
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return
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}
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}
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let fileURL = downloadsURL.appendingPathComponent("\(MP_PlayerManager.shared.loadPlayer.currentVideo.song.videoId ?? "").mp4")
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do {
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try FileManager.default.moveItem(at: filePathUrl, to: fileURL)
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//回调VideoID
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completionHandlers[originalURL]?(.success(songHandlers[originalURL]!))
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progressStorage[originalURL] = nil // 清除已完成任务的进度记录
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} catch {
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completionHandlers[originalURL]?(.failure(error))
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}
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}).failure(handler: { [weak self] (task) in
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guard let self = self else {return}
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//任务下载失败
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let originalURL = task.url
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if let error = task.error {
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completionHandlers[originalURL]?(.failure(error))
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}
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})
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}
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func getProgress(for url: URL) -> CGFloat? {
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return progressStorage[url]
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}
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func cancelAllTasksIfNeeded() {
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// 根据需求，取消所有任务，或者根据任务状态进行过滤
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for key in progressStorage.keys {
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session.cancel(key)
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}
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}
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//删除下载文件
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func deleteFileDocuments(_ videoId:String, completion:@escaping((String) -> Void)) {
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let downloadsURL = DocumentsURL.appendingPathComponent("Downloads")
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let fileURL = downloadsURL.appendingPathComponent("\(videoId).mp4")
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if FileManager.default.fileExists(atPath: fileURL.absoluteString) {
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do{
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try FileManager.default.removeItem(at: fileURL)
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//文件删除成功
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completion(videoId)
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}catch{
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print("删除文件时发生错误：\(error)")
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}
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}else {
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print("文件不存在")
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}
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}
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}
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//class DownloadManager {
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//
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// static let shared = DownloadManager()
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//
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// private init() {}
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//
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// func downloadVideo(from url: URL, videoId: String, progressView: CircularProgressView, completion: @escaping (Result<URL, Error>) -> Void) {
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// let destination: DownloadRequest.Destination = { _, _ in
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// let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
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// let downloadsURL = documentsURL.appendingPathComponent("Downloads")
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//
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// // 检查并创建 Downloads 文件夹
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// if !FileManager.default.fileExists(atPath: downloadsURL.path) {
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// do {
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// try FileManager.default.createDirectory(at: downloadsURL, withIntermediateDirectories: true, attributes: nil)
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// } catch {
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// completion(.failure(error))
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// return (downloadsURL, [.removePreviousFile, .createIntermediateDirectories])
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// }
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// }
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//
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// let fileURL = downloadsURL.appendingPathComponent("\(videoId).mp4")
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// return (fileURL, [.removePreviousFile, .createIntermediateDirectories])
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// }
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//
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// AF.download(url, to: destination).downloadProgress { progress in
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// progressView.setProgress(to: CGFloat(progress.fractionCompleted))
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// }.response { response in
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// if let error = response.error {
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// completion(.failure(error))
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// } else if let filePath = response.fileURL {
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// completion(.success(filePath))
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// }
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// }
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// }
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//}
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