import {
	TakePhotoOption,
	GeneralCallbackResult,
	CameraContextSetZoomOption,
	CameraContextStartRecordOption,
	CameraContextStopRecordOption,
	OnCameraFrameCallback,
	CameraFrameListenerStartOption,
	StopOption,
	TakePhoto,
	SetZoom,
	StartRecord,
	StopRecord,
	StartCameraFrame,
	StopCameraFrame,
	OnCameraFrameListenerOption,
	SwitchCamera,
	SwitchOption
} from '../interface'
import { CameraManager } from './CameraManager';

class CameraFrameListener {
	context : CameraContext
	constructor(context : CameraContext) {
		this.context = context
	}
	start() : void
	start(option ?: CameraFrameListenerStartOption) {
		CameraManager.getInstance().getCameraView()?.cameraFrameOnStart(option)
	}
	stop() : void
	stop(option ?: StopOption) {
		CameraManager.getInstance().getCameraView()?.cameraFrameOnStop(option)
	}
}

class CameraContext {
	private mCameraFrameListener : CameraFrameListener | null = null

	constructor() {

	}

	takePhoto(option : TakePhotoOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.takePhoto(option)
	}

	setZoom(option : CameraContextSetZoomOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}

		camera?.setZoom(option)
	}

	startRecord(option : CameraContextStartRecordOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.startRecord(option)
	}

	stopRecord(option : CameraContextStopRecordOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.stopRecord(option)
	}

	onCameraFrame() : CameraFrameListener
	onCameraFrame(callback : OnCameraFrameCallback | null = null) : CameraFrameListener {
		if (this.mCameraFrameListener == null) {
			this.mCameraFrameListener = new CameraFrameListener(this)
		}
		CameraManager.getInstance().getCameraView()?.onCameraFrame(callback)
		return this.mCameraFrameListener!
	}
	//////////////////////////////////////////////////////
	onCameraFrameListener(option : OnCameraFrameListenerOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			return;
		}
		camera?.onCameraFrameListener(option)
	}

	cameraFrameOnStart(option : CameraFrameListenerStartOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.cameraFrameOnStart(option)
	}

	cameraFrameOnStop(option : StopOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.cameraFrameOnStop(option)
	}

	switchCamera(option : SwitchOption) {
		let camera = CameraManager.getInstance().getCameraView()
		if (camera == null) {
			option.fail?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			option.complete?.({
				errMsg: '未找到相机'
			} as GeneralCallbackResult)
			return;
		}
		camera?.switchCamera(option.position)

		option.success?.({
			errMsg: 'ok'
		} as GeneralCallbackResult)
		option.complete?.({
			errMsg: 'ok'
		} as GeneralCallbackResult)
	}
}

let context : CameraContext = new CameraContext();

export function createCameraContext() : CameraContext {
	return context;
}


//////////////////////////////////////////////////////////////////////////////////////////////////
export const takePhoto : TakePhoto = function (options : TakePhotoOption) {
	context.takePhoto(options)
}

export const setZoom : SetZoom = function (options : CameraContextSetZoomOption) {
	context.setZoom(options)
}

export const startRecord : StartRecord = function (options : CameraContextStartRecordOption) {
	context.startRecord(options)
}

export const stopRecord : StopRecord = function (options : CameraContextStopRecordOption) {
	context.stopRecord(options)
}

@UTSJS.keepAlive
export function onCameraFrameListener(options : OnCameraFrameListenerOption) {
	context.onCameraFrameListener(options)
}

export const startCameraFrame : StartCameraFrame = function (options : CameraFrameListenerStartOption) {
	context.cameraFrameOnStart(options)
}

export const stopCameraFrame : StopCameraFrame = function (options : StopOption) {
	context.cameraFrameOnStop(options)
}

export const switchCamera : SwitchCamera = function (options : SwitchOption) {
	context.switchCamera(options)
}