another.im-ios/ConversationsClassic/View/Main/Conversation/Attachments/MediaPicker/CameraCellPreview.swift

import AVFoundation
import SwiftUI

struct CameraCellPreview: View {
    @Environment(\.router) var router
    @EnvironmentObject var store: FileStore

    var body: some View {
        Group {
            if store.cameraAccessGranted {
                ZStack {
                    CameraView()
                        .aspectRatio(1, contentMode: .fit)
                        .frame(maxWidth: .infinity)
                    Image(systemName: "camera")
                        .resizable()
                        .aspectRatio(contentMode: .fit)
                        .frame(width: 40, height: 40)
                        .foregroundColor(.white)
                        .padding(8)
                        .background(Color.black.opacity(0.5))
                        .clipShape(Circle())
                        .padding(8)
                }
                .onTapGesture {
                    router.showScreen(.fullScreenCover) { _ in
                        CameraPicker()
                            .ignoresSafeArea(.all)
                    }
                }
            } else {
                Button {
                    openAppSettings()
                } label: {
                    ZStack {
                        Rectangle()
                            .fill(Color.Material.Background.light)
                            .overlay {
                                VStack {
                                    Image(systemName: "camera")
                                        .foregroundColor(.Material.Elements.active)
                                        .font(.system(size: 30))
                                    Text("Allow camera access")
                                        .foregroundColor(.Material.Text.main)
                                        .font(.body3)
                                }
                            }
                            .frame(height: 100)
                    }
                }
            }
        }
        .task {
            await store.checkCameraAuthorization()
        }
    }
}