Renamming FrameHandler in CameraModel. Renamming FrameView in CameraView. Refactoring ViewModel: Retrieving output in progress, removing permissionGranted property: I use it directly, adding permissionAlert property for UI.

macamera/CameraPreview/CameraModel.swift

@@ -1,5 +1,5 @@
 //
-//  FrameHandler.swift
+//  CameraModel.swift
 //  macamera
 //
 //  Created by Maxime on 06/05/2025.
@@ -10,11 +10,13 @@
 import AVFoundation
 import CoreImage
 
-class FrameHandler: NSObject, ObservableObject {
+class CameraModel: NSObject, ObservableObject {
     
     @Published var frame: CGImage?
     
-    private var permissionGranted: Bool = true
+    @Published var permissionAlert = false
+    @Published var output = AVCapturePhotoOutput()
+    
     private let captureSession = AVCaptureSession()
     private let context = CIContext()
     
@@ -22,37 +24,43 @@ class FrameHandler: NSObject, ObservableObject {
         super.init()
         
         Task.detached(priority: .background) {
-            self.permissionGranted = await self.checkPermission()
-            self.setupCaptureSession()
+            let accessIsGranted = await self.checkPermission()
+            self.setupCaptureSession(accessIsGranted: accessIsGranted)
         }
     }
 }
 
 // MARK: - Convenience Methods
 
-extension FrameHandler {
+extension CameraModel {
     
     private func checkPermission() async -> Bool {
         switch AVCaptureDevice.authorizationStatus(for: .video) {
-        case .notDetermined:
-            return await AVCaptureDevice.requestAccess(for: .video)
         case .authorized:
             return true
+        case .notDetermined:
+            let isGranted = await AVCaptureDevice.requestAccess(for: .video)
+            
+            if isGranted == false {
+                permissionAlert.toggle()
+            }
+            
+            return isGranted
         default:
+            permissionAlert.toggle()
             return false
         }
     }
     
-    private func setupCaptureSession() {
-        let videoOutput = AVCaptureVideoDataOutput()
-        
-        guard permissionGranted else { return }
+    private func setupCaptureSession(accessIsGranted: Bool) {
+        guard accessIsGranted else { return }
         guard let videoDevice = AVCaptureDevice.default(.builtInDualWideCamera, for: .video, position: .back) else { return }
         guard let videoDeviceInput = try? AVCaptureDeviceInput(device: videoDevice) else { return }
         
         guard captureSession.canAddInput(videoDeviceInput) else { return }
         captureSession.addInput(videoDeviceInput)
         
+        let videoOutput = AVCaptureVideoDataOutput()
         videoOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "sampleBufferQueue"))
         captureSession.addOutput(videoOutput)
         
@@ -64,7 +72,7 @@ extension FrameHandler {
 
 // MARK: - AVCaptureVideoDataOutputSampleBufferDelegate
 
-extension FrameHandler: AVCaptureVideoDataOutputSampleBufferDelegate {
+extension CameraModel: AVCaptureVideoDataOutputSampleBufferDelegate {
     
     func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
         guard let cgImage = imageFromSampleBuffer(sampleBuffer: sampleBuffer) else { return }

macamera/CameraPreview/CameraView.swift

@@ -1,5 +1,5 @@
 //
-//  FrameView.swift
+//  CameraView.swift
 //  macamera
 //
 //  Created by Maxime on 06/05/2025.
@@ -7,7 +7,7 @@
 
 import SwiftUI
 
-struct FrameView: View {
+struct CameraView: View {
     
     var image: CGImage?
     private let label = Text("frame")
@@ -22,5 +22,5 @@ struct FrameView: View {
 }
 
 #Preview {
-    FrameView()
+    CameraView()
 }

macamera/ContentView.swift

@@ -8,10 +8,10 @@
 import SwiftUI
 
 struct ContentView: View {
-    @StateObject private var model = FrameHandler()
+    @StateObject private var model = CameraModel()
     
     var body: some View {
-        FrameView(image: model.frame)
+        CameraView(image: model.frame)
             .ignoresSafeArea()
     }
 }