//go:build darwin

package audio

/*
#cgo CFLAGS: -x objective-c
#cgo LDFLAGS: -framework AVFoundation
#import <AVFoundation/AVFoundation.h>

static int pvMicrophoneStatus(void) {
	return (int)[AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
}

static int pvRequestMicrophone(void) {
	__block int granted = 0;
	dispatch_semaphore_t sem = dispatch_semaphore_create(0);
	[AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL ok) {
		granted = ok ? 1 : 0;
		dispatch_semaphore_signal(sem);
	}];
	dispatch_semaphore_wait(sem, dispatch_time(DISPATCH_TIME_NOW, 30 * NSEC_PER_SEC));
	return granted;
}
*/
import "C"

type microphoneAuthorization struct {
	granted bool
	state   string
}

var ensureMicrophoneAuthorization = defaultEnsureMicrophoneAuthorization

func defaultEnsureMicrophoneAuthorization() microphoneAuthorization {
	status := int(C.pvMicrophoneStatus())
	if status == 0 {
		C.pvRequestMicrophone()
		status = int(C.pvMicrophoneStatus())
	}
	return microphoneAuthorization{
		granted: status == 3,
		state:   microphoneAuthorizationState(status),
	}
}

func microphoneAuthorizationState(status int) string {
	switch status {
	case 0:
		return "notDetermined"
	case 1:
		return "restricted"
	case 2:
		return "denied"
	case 3:
		return "granted"
	default:
		return "unknown"
	}
}