////
////  TestingKaraokeVC.swift
////  WOKA
////
////  Created by MacBook Pro on 09/07/24.
////
//
//import AVFAudio
//import UIKit
//import AVFoundation
//
//class TestingKaraokeVC : UIViewController{
//    
//    var player: AVPlayer!
//    var audioEngine: AVAudioEngine!
//    var micInput: AVAudioInputNode!
//    var playerNode: AVAudioPlayerNode!
//    var audioFile: AVAudioFile!
//    var fileURL: URL!
//    
//    override func viewDidLoad() {
//        super.viewDidLoad()
//        
//        let videoURL = URL(string: "https://content.jwplatform.com/videos/DOhtETio-Ysj2G4DQ.mp4")!
//        setupPlayer(with: videoURL)
//        setupAudioEngine()
//        setupAudioFile()
//    }
//    
//    func setupPlayer(with url: URL) {
//        player = AVPlayer(url: url)
//        let playerLayer = AVPlayerLayer(player: player)
//        playerLayer.frame = view.bounds
//        view.layer.addSublayer(playerLayer)
//        player.play()
//    }
//    
//    func setupAudioEngine() {
//        audioEngine = AVAudioEngine()
//        micInput = audioEngine.inputNode
//        playerNode = AVAudioPlayerNode()
//        
//        audioEngine.attach(playerNode)
//        let format = micInput.inputFormat(forBus: 0)
//        
//        audioEngine.connect(micInput, to: audioEngine.mainMixerNode, format: format)
//        audioEngine.connect(playerNode, to: audioEngine.mainMixerNode, format: format)
//        
//        try! audioEngine.start()
//    }
//    
//    func setupAudioFile() {
//        let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
//        fileURL = documentsDirectory.appendingPathComponent("output.m4a")
//        let format = audioEngine.mainMixerNode.outputFormat(forBus: 0)
//        
//        do {
//            audioFile = try AVAudioFile(forWriting: fileURL, settings: format.settings)
//        } catch {
//            print("Error creating audio file: \(error)")
//        }
//    }
//    
//    func startRecording() {
//        let mixer = audioEngine.mainMixerNode
//        let format = mixer.outputFormat(forBus: 0)
//        
//        mixer.installTap(onBus: 0, bufferSize: 1024, format: format) { (buffer, time) in
//            do {
//                try self.audioFile.write(from: buffer)
//            } catch {
//                print("Error writing audio buffer: \(error)")
//            }
//        }
//    }
//    
//    func stopRecording() {
//        let mixer = audioEngine.mainMixerNode
//        mixer.removeTap(onBus: 0)
//        
//        // Save the file to Files app
//        presentDocumentPicker()
//    }
//    
//    func presentDocumentPicker() {
//        //        let documentPicker = UIDocumentPickerViewController(forExporting: [fileURL])
//        //        documentPicker.delegate = self
//        //        present(documentPicker, animated: true, completion: nil)
//        
//        guard let mixedAudioURL = fileURL else { return }
//        DispatchQueue.main.async {
//            let documentPicker = UIDocumentPickerViewController(url: mixedAudioURL, in: .exportToService)
//            documentPicker.delegate = self
//            self.present(documentPicker, animated: true, completion: nil)
//        }
//    }
//    
//    @IBAction func startButtonPressed(_ sender: UIButton) {
//        startRecording()
//    }
//    
//    @IBAction func stopButtonPressed(_ sender: UIButton) {
//        stopRecording()
//    }
//}
//
//extension TestingKaraokeVC: UIDocumentPickerDelegate {
//    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
//        guard let selectedURL = urls.first else { return }
//        do {
//            try FileManager.default.moveItem(at: fileURL, to: selectedURL)
//        } catch {
//            print("Error saving file to Files app: \(error)")
//        }
//    }
//    
//    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
//        print("Document picker was cancelled")
//    }
//}