import Foundation

final class ClassifierProgressObserver: NSObject {

    weak var delegate: ClassifierProgressDelegate?
}


extension ClassifierProgressObserver: URLSessionDownloadDelegate {

    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
        
    }
    
    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
        delegate?.classifierProgress(.init(
            bytesLoaded: Double(totalBytesWritten),
            total: Double(totalBytesExpectedToWrite)))
    }
}