A download manager with pure swift code.
Stores to device's file system and keeps track of active, completed and interrupted downloads.
The code provides a general structure for download and current version has implementation for:
ImageDownloaderInteractorEntityDownloadInteractorDefaultDownloadInteractor
Sample usage of ImageDownloaderInteractor:
import swift_download_manager
// ...
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
ImageDownloaderInteractor().getOrDownloadImage(remoteUrl: url) { result in
switch result {
case let .success(image):
// use image
case let .failure(error):
// handle error
}
}
}For such cases ImageDownloaderInteractor will try to start or resume an interrupted download of the image based on the given url.
Sample usage of DefaultDownloadInteractor:
import swift_download_manager
// ...
final class YourCustomDownloadInteractor {
private let defaultDownloadInteractor = DefaultDownloadInteractor() // you should use protocols 😄 and dependency injection for testing
// `YourSomething` can be anything you like an UIImage, a PDF whatever you need to download, etc
// you would just need to use the local url provided in the completion of DefaultDownloadManager to cast/load
func getOrDownloadSomething(remoteUrl url: URL, completion: @escaping (Result<YourSomething>, DownloadError)) {
defaultDownloadManager.getOrDownload(remoteUrl: url) { result in
// here for example URL is used to create a Data object and based on that get an UIImage
completion(
result.map { url in
(try? Data(contentsOf: url)).map { UIImage(data: $0)}
}
)
}
}
}