dependencies: [
  .package(url: "https://github.com/Kofktu/PIPKit.git", .upToNextMajor(from: "1.0.0"))
]

public protocol PIPUsable {
    var initialState: PIPState { get }
    var initialPosition: PIPPosition { get }
    var insetsPIPFromSafeArea: Bool { get }
    var pipEdgeInsets: UIEdgeInsets { get }
    var pipSize: CGSize { get }
    var pipShadow: PIPShadow? { get }
    var pipCorner: PIPCorner? { get }
    func didChangedState(_ state: PIPState)
    func didChangePosition(_ position: PIPPosition)
}

class PIPKit {
    var isPIP: Bool
    var isActive: Bool
    var visibleViewController: PIPKitViewController?

    class func show(with viewController: PIPKitViewController, completion: (() -> Void)? = nil)
    class func dismiss(animated: Bool, completion: (() -> Void)? = nil)
}

func setNeedsUpdatePIPFrame()
func startPIPMode()
func stopPIPMode()

class PIPViewController: UIViewController, PIPUsable {}

let viewController = PIPViewController()
PIPKit.show(with: viewController)
PIPKit.dismiss(animated: true)

class PIPViewController: UIViewController, PIPUsable {
    func updatePIPSize() {
        pipSize = CGSize()
        pipEdgeInsets = UIEdgeInsets()
        setNeedsUpdatePIPFrame()
    }
}

class PIPViewController: UIViewController, PIPUsable {
    func fullScreenAndPIPMode() {
        if PIPKit.isPIP {
            stopPIPMode()    
        } else {
            startPIPMode()
        }
    }

    func didChangedState(_ state: PIPState) {}
}

var PIPKit.isAVPIPKitSupported: Bool

protocol AVPIPKitRenderer {
    
    var policy: AVPIPKitRenderPolicy { get }
    var renderPublisher: AnyPublisher<UIImage, Never> { get }
    
    func start()
    func stop()
    
}

class View: UIView, AVPIPUIKitUsable {

    var pipTargetView: UIView { self } // Return the subview that you want to show.
    var renderPolicy: AVPIPKitRenderPolicy {
        // .once - only once render
        // .preferredFramesPerSecond - render in frames-per-second
    }
}

view.startPictureInPicture()
view.stopPictureInPicture()

class ViewController: UIViewController, AVPIPUIKitUsable {
    var pipTargetView: UIView { view } // Return the subview that you want to show.

    func start() {
        startPictureInPicture()
    }

    func stop() {
        stopPictureInPicture()
    }
}