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/**
 * Contract that extends ActivityResultContract to implement a 
 * custom intent creation and handling of the results from that
 * intent.
*/
class MessageContract : ActivityResultContract<Unit, String>() {

    /**
     * Create an intent to start MessageActivity. If you were 
     * providing a starting point you would pass that text here.

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private val multiPermissionCallback =
        registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { map ->
            //handle individual results if desired                                                                      
            map.entries.forEach { entry ->
                when (entry.key) {
                    Manifest.permission.ACCESS_FINE_LOCATION ->
                        mBinding.iconLocationPermission.isEnabled = entry.value
                    Manifest.permission.CAMERA ->
                        mBinding.iconCameraPermission.isEnabled = entry.value
                    Manifest.permission.RECORD_AUDIO ->

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//register result contract - takes in a URI for where to store the image and returns a success boolean
private val takePictureCallback =
        registerForActivityResult(ActivityResultContracts.TakePicture()) { successful ->
            if (successful) {
                //load image from provided URI
            } else {
                //show user an error
            }
        }
        

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    @RequiresApi(Build.VERSION_CODES.R)
    fun View.addKeyboardInsetListener(keyboardCallback: (visible: Boolean) -> Unit) {
        doOnLayout {
            //get init state of keyboard
            var keyboardVisible = rootWindowInsets?.isVisible(WindowInsets.Type.ime()) == true

            //callback as soon as the layout is set with whether the keyboard is open or not
            keyboardCallback(keyboardVisible)

            //whenever there is an inset change on the App, check if the keyboard is visible.

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view.rootWindowInsets?.isVisible(WindowInsets.Type.ime())

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//hide the status bars
windowInsetsController?.hide(WindowInsets.Type.statusBars())

//show the IME
windowInsetsController?.show(WindowInsets.Type.ime())

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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
    //only required if using the KeyboardInsetListener
    window.setDecorFitsSystemWindows(false)
    //only receives callbacks when the inset affects my window. 
    binding.container.addKeyboardInsetListener(mainViewModel.keyboardCallback)
}

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class MainViewModel : ViewModel() {

    private val _keyboardActive = MutableLiveData<Int>()
    val keyboardActive: LiveData<Int> = _keyboardActive

    //callback to be provided to extension function for keyboard changes
    val keyboardCallback: (visible: Boolean) -> Unit = {
        _keyboardActive.value = if (it) {
            View.GONE
        } else {

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@RequiresApi(Build.VERSION_CODES.R)
fun View.addKeyboardListener(keyboardCallback: (visible: Boolean) -> Unit) {
    doOnLayout {
        //get init state of keyboard
        var keyboardVisible = rootWindowInsets?.isVisible(WindowInsets.Type.ime()) == true

        //callback as soon as the layout is set with whether the keyboard is open or not
        keyboardCallback(keyboardVisible)

        //whenever the layout resizes/changes, callback with the state of the keyboard.

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@Test
fun testLaunchActivityEventSample() {
   var eventReceived: ActivityEvent? = null
   val observer = Observer<NavEvent> {
      eventReceived = it as ActivityEvent
    }
    //Observe forever since we don't have a lifecycle
    viewModel.navEventSample.observeForever(observer)
    //Mock the Bundle Creation 
    mockkConstructor(Bundle::class)