import { AVCaptureSession, AVAssetExportPresetHighestQuality, AVCaptureDevice, AVMediaType, AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureDeviceInput, AVCaptureInput, AVCaptureVideoDataOutput, AVCaptureConnection, AVCaptureVideoPreviewLayer, AVLayerVideoGravity, AVCaptureVideoOrientation, AVCaptureMovieFileOutput, AVCaptureFileOutputRecordingDelegate, AVCaptureOutput, AVCaptureFileOutput, AVAsset, AVAssetExportSession, AVFileType } from 'AVFoundation';
import { PHPhotoLibrary, PHAuthorizationStatus } from 'Photos';
import { CMSampleBuffer, CMSampleBufferGetFormatDescription, CMFormatDescription, CMVideoFormatDescriptionGetDimensions, CMSampleBufferGetImageBuffer } from 'CoreMedia';
import { DispatchQueue } from "Dispatch"
import { UIView, UIImage, UISaveVideoAtPathToSavedPhotosAlbum, UIImageWriteToSavedPhotosAlbum, UIApplication, UIImageView, UILabel, UIViewController, UIFontDescriptor, UIFont, NSTextAlignment, UITapGestureRecognizer, UIAlertController, UIGraphicsImageRenderer, UIGraphicsRendererContext, UIBezierPath, CameraDevice, UIImagePickerController } from 'UIKit';
import { CGRect, CGFloat, CGPoint, CGAffineTransform, CGSize } from 'CoreFoundation';

import { NotificationCenter, NSNotification, Notification, FileManager, Data, URL, NSError } from 'Foundation';
import { Selector } from 'ObjectiveC';
import { Alignment } from 'ARKit';
import { CIImage, CIContext } from 'CoreImage';
import { CGPath } from 'CoreGraphics';

import { xCamreaUOpts } from '../interface.uts';
import { xCamrea } from './libs/camrea.uts';

const camera = new xCamrea();
export class xCamreaU {
	$element : UniNativeViewElement;
	targetView : UIView = new UIView();
	config : xCamreaUOpts;
	
	constructor(element : UniNativeViewElement, opts : xCamreaUOpts) {
		this.config = opts;
		this.$element = element;
		this.$element.bindIOSView(this.targetView);
		camera.setView(this.targetView)
	}
	getIsOpeningCameraing():boolean{
		return camera.getIsOpeningCameraing()
	}
	setCameraDir(dir:string){
		camera.setCameraDir(dir)
	}
	setFlash(flash:boolean){
		camera.setFlash(flash)
	}
	openCamrea(){
		camera.openCamrea()
	}

	takePhoto(call:(path:string)=>void){
		camera.takePhoto((path:string)=>{
			call(path)
		},false)
	}
	start(call:(path:string)=>void) {
		camera.startRecoderVideo(call)
	}
	pause(){
		camera.pauseRecoderVideo()
	}

	stop(){
		camera.stopRecoderVideo()
	}
	
	/** 关闭相机 */
	close() {
		camera.closeCamrea()
	}

}

// 检查权限
export function checkPermissions():Promise<boolean> {
	return new Promise((res, rej) => {
		PHPhotoLibrary.requestAuthorization((isok : PHAuthorizationStatus) => {
			// 拒绝了相册选取权限。
			if (isok != PHAuthorizationStatus.authorized) {
				rej(false)
				return;
			}
			AVCaptureDevice.requestAccess(for = AVMediaType.video, completionHandler = (isok2 : boolean) => {
				if (!isok2) {
					rej(false)
					return;
				}

				AVCaptureDevice.requestAccess(for = AVMediaType.audio, completionHandler = (isok3 : boolean) => {
					if (!isok3) {
						rej(false)
						return;
					}
					res(true)
				})
			})
		})
	}
}