react-native-vision-camera/package/ios/TestRecorder/ViewController.swift

//
//  ViewController.swift
//  TestRecorder
//
//  Created by Rafael Bastos on 11/07/2024.
//  Copyright © 2024 mrousavy. All rights reserved.
//

import UIKit
import AVFoundation

class ViewController: UIViewController {
  
  @IBOutlet weak var recordButton: UIButton!
  
  let cameraView = CameraView()
  let filePath: String = {
    NSTemporaryDirectory() + "TestRecorder"
  }()
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    try? FileManager.default.removeItem(atPath: filePath)
    
    cameraView.translatesAutoresizingMaskIntoConstraints = false;
    view.insertSubview(cameraView, at: 0)
    NSLayoutConstraint.activate([
      cameraView.topAnchor.constraint(equalTo: view.topAnchor),
      cameraView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
      cameraView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
      cameraView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
    ])
    
    recordButton.isHidden = true
    cameraView.onInitialized = { _ in
      DispatchQueue.main.async {
        self.recordButton.isHidden = false
      }
    }
    cameraView.onInitReady = { json in
      print("onInitReady:", json ?? "nil")
    }
    cameraView.onVideoChunkReady = { json in
      print("onVideoChunkReady:", json ?? "nil")
    }
    
    Task { @MainActor in
      await requestAuthorizations()
      
      cameraView.photo = true
      cameraView.video = true
      cameraView.audio = false
      cameraView.isActive = true
      cameraView.cameraId = getCameraDeviceId() as NSString?
      cameraView.didSetProps([])
    }
  }
  
  func isAuthorized(for mediaType: AVMediaType) async -> Bool {
    let status = AVCaptureDevice.authorizationStatus(for: mediaType)
    var isAuthorized = status == .authorized
    if status == .notDetermined {
      isAuthorized = await AVCaptureDevice.requestAccess(for: mediaType)
    }
    return isAuthorized
  }
  
  
  func requestAuthorizations() async {
    guard await isAuthorized(for: .video) else { return }
    guard await isAuthorized(for: .audio) else { return }
    // Set up the capture session.
  }
  
  private func getCameraDeviceId() -> String? {
    let deviceTypes: [AVCaptureDevice.DeviceType] = [
      .builtInWideAngleCamera
    ]
    let discoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: deviceTypes, mediaType: .video, position: .back)
    
    let device = discoverySession.devices.first
    
    return device?.uniqueID
  }
  
  @IBAction
  func toggleRecord(_ button: UIButton) {
    if button.title(for: .normal) == "Stop" {
      
      cameraView.stopRecording(promise: Promise(
        resolver: { result in
          print("result")
        }, rejecter: { code, message, cause in
          print("error")
        }))
      
      button.setTitle("Record", for: .normal)
      button.configuration = .filled()
      
    } else {
      cameraView.startRecording(
        options: [
          "fileType": "mp4",
          "videoCodec": "h265",
        ],
        filePath: filePath) { callback in
          print("callback", callback)
        }
      
      button.setTitle("Stop", for: .normal)
      button.configuration = .bordered()
    }
  }
  
  override func viewWillTransition(to size: CGSize, with coordinator: any UIViewControllerTransitionCoordinator) {
    switch UIDevice.current.orientation {
    case .landscapeLeft:
      cameraView.orientation = "landscape-right"
    case .landscapeRight:
      cameraView.orientation = "landscape-left"
    default:
      cameraView.orientation = "portrait"
    }
    
    cameraView.didSetProps([])
    super.viewWillTransition(to: size, with: coordinator)
  }
  
}