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| 1 | +// |
| 2 | +// DownloadDelegate.swift |
| 3 | +// RadiantKit |
| 4 | +// |
| 5 | +// Created by Leo Dion. |
| 6 | +// Copyright © 2025 BrightDigit. |
| 7 | +// |
| 8 | +// Permission is hereby granted, free of charge, to any person |
| 9 | +// obtaining a copy of this software and associated documentation |
| 10 | +// files (the “Software”), to deal in the Software without |
| 11 | +// restriction, including without limitation the rights to use, |
| 12 | +// copy, modify, merge, publish, distribute, sublicense, and/or |
| 13 | +// sell copies of the Software, and to permit persons to whom the |
| 14 | +// Software is furnished to do so, subject to the following |
| 15 | +// conditions: |
| 16 | +// |
| 17 | +// The above copyright notice and this permission notice shall be |
| 18 | +// included in all copies or substantial portions of the Software. |
| 19 | +// |
| 20 | +// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, |
| 21 | +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
| 22 | +// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 23 | +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| 24 | +// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 25 | +// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 26 | +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 27 | +// OTHER DEALINGS IN THE SOFTWARE. |
| 28 | +// |
| 29 | + |
| 30 | +import Foundation |
| 31 | + |
| 32 | +internal final class DownloadDelegate: NSObject, URLSessionDownloadDelegate { |
| 33 | + private let container = ObserverContainer() |
| 34 | + |
| 35 | + internal func setObserver(_ observer: DownloadObserver) { |
| 36 | + self.container.setObserver(observer) |
| 37 | + } |
| 38 | + |
| 39 | + internal func urlSession( |
| 40 | + _: URLSession, |
| 41 | + downloadTask _: URLSessionDownloadTask, |
| 42 | + didFinishDownloadingTo location: URL |
| 43 | + ) { |
| 44 | + let newLocation = FileManager |
| 45 | + .default.temporaryDirectory |
| 46 | + .appendingPathComponent(UUID().uuidString) |
| 47 | + .appendingPathExtension(location.pathExtension) |
| 48 | + do { |
| 49 | + try FileManager.default.copyItem(at: location, to: newLocation) |
| 50 | + } catch { |
| 51 | + container.on { observer in observer.didComplete(withError: error) } |
| 52 | + return |
| 53 | + } |
| 54 | + container.on { observer in observer.finishedDownloadingTo(newLocation) } |
| 55 | + } |
| 56 | + |
| 57 | + internal func urlSession( |
| 58 | + _: URLSession, |
| 59 | + downloadTask _: URLSessionDownloadTask, |
| 60 | + didWriteData _: Int64, |
| 61 | + totalBytesWritten: Int64, |
| 62 | + totalBytesExpectedToWrite: Int64 |
| 63 | + ) { |
| 64 | + container.on { observer in |
| 65 | + observer.progressUpdated( |
| 66 | + .init( |
| 67 | + totalBytesWritten: totalBytesWritten, |
| 68 | + totalBytesExpectedToWrite: totalBytesExpectedToWrite |
| 69 | + ) |
| 70 | + ) |
| 71 | + } |
| 72 | + } |
| 73 | + |
| 74 | + internal func urlSession( |
| 75 | + _: URLSession, |
| 76 | + task _: URLSessionTask, |
| 77 | + didCompleteWithError error: (any Error)? |
| 78 | + ) { |
| 79 | + container.on { observer in observer.didComplete(withError: error) } |
| 80 | + } |
| 81 | +} |
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