UserInterfaceIdiom.swift

import SwiftUI

public enum UserInterfaceIdiom: Hashable {
    case unspecified
    case phone
    case pad
    case mac
    case carPlay
    case tv
    case vision
}

extension EnvironmentValues {
    
    struct UserInterfaceIdiomKey: EnvironmentKey {
        #if os(iOS)
        static var defaultValue: UserInterfaceIdiom = UIDevice.current.userInterfaceIdiom.idiom
        #elseif os(macOS)
        static var defaultValue: UserInterfaceIdiom = .mac
        #elseif os(tvOS)
        static var defaultValue: UserInterfaceIdiom = .tv
        #elseif os(visionOS)
        static var defaultValue: UserInterfaceIdiom = .vision
        #endif
    }
    
    public var userInterfaceIdiom: UserInterfaceIdiom {
        get { self[UserInterfaceIdiomKey.self] }
    }
}

#if os(iOS)
extension UIUserInterfaceIdiom {
    
    var idiom: UserInterfaceIdiom {
        switch self {
        case .unspecified:
            return .unspecified
        case .phone:
            return .phone
        case .pad:
            return .pad
        case .tv:
            return .tv
        case .carPlay:
            return .carPlay
        case .mac:
            return .mac
        case .vision:
            return .vision
        @unknown default:
            return .unspecified
        }
    }
}
#endif