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Code Issues Packages Projects Releases Wiki Activity

Resume downloads

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This commit is contained in:
Chris Li 2017-01-31 14:23:54 -05:00
parent aa60ae8919
commit 2ef8180fd1
1 changed files with 20 additions and 3 deletions
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23
Kiwix/Network/Network.swift
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@ -10,6 +10,7 @@ import UIKit
class Network: NSObject, URLSessionDelegate, URLSessionTaskDelegate, URLSessionDownloadDelegate { class Network: NSObject, URLSessionDelegate, URLSessionTaskDelegate, URLSessionDownloadDelegate {
static let shared = Network() static let shared = Network()
let bookSizeThreshold: Int64 = 100000000
private override init() { private override init() {
super.init() super.init()
_ = wifiSession _ = wifiSession
@ -36,16 +37,16 @@ class Network: NSObject, URLSessionDelegate, URLSessionTaskDelegate, URLSessionD
func start(bookID: String) { func start(bookID: String) {
guard let book = Book.fetch(bookID, context: managedObjectContext), let url = book.url else {return} guard let book = Book.fetch(bookID, context: managedObjectContext), let url = book.url else {return}
let task = (book.fileSize > 100000000 ? wifiSession: cellularSession).downloadTask(with: url) let task = (book.fileSize > bookSizeThreshold ? wifiSession: cellularSession).downloadTask(with: url)
task.taskDescription = book.id task.taskDescription = book.id
task.resume() task.resume()
let downloadTask = DownloadTask.fetch(bookID: book.id, context: managedObjectContext) let downloadTask = DownloadTask.fetch(bookID: bookID, context: managedObjectContext)
downloadTask?.state = .queued downloadTask?.state = .queued
if self.managedObjectContext.hasChanges { try? self.managedObjectContext.save() } if self.managedObjectContext.hasChanges { try? self.managedObjectContext.save() }
progresses[book.id] = 0 progresses[bookID] = 0
if progresses.count == 1 { startTimer() } if progresses.count == 1 { startTimer() }
} }
@ -74,7 +75,22 @@ class Network: NSObject, URLSessionDelegate, URLSessionTaskDelegate, URLSessionD
} }
func resume(bookID: String) { func resume(bookID: String) {
guard let data = Preference.resumeData[bookID] else {return}
let bookSizeIsBig: Bool = {
guard let size = Book.fetch(bookID, context: self.managedObjectContext)?.fileSize else {return true}
return size > bookSizeThreshold
}()
let task = (bookSizeIsBig ? wifiSession : cellularSession).downloadTask(withResumeData: data)
task.taskDescription = bookID
task.resume()
let downloadTask = DownloadTask.fetch(bookID: bookID, context: managedObjectContext)
downloadTask?.state = .queued
if self.managedObjectContext.hasChanges { try? self.managedObjectContext.save() }
progresses[bookID] = 0
if progresses.count == 1 { startTimer() }
} }
private func cancelTask(in session: URLSession, taskDescription: String, producingResumingData: Bool) { private func cancelTask(in session: URLSession, taskDescription: String, producingResumingData: Bool) {
@ -118,6 +134,7 @@ class Network: NSObject, URLSessionDelegate, URLSessionTaskDelegate, URLSessionD
if self.managedObjectContext.hasChanges { try? self.managedObjectContext.save() } if self.managedObjectContext.hasChanges { try? self.managedObjectContext.save() }
}) })
} }
print(error?.localizedDescription)
} }
// MARK: - URLSessionDownloadDelegate // MARK: - URLSessionDownloadDelegate