import { CreateVideoContext, VideoContext, RequestFullScreenOptions, Danmu } from '../interface.uts';
import { UniVideoTimeUpdateEvent, UniVideoTimeUpdateEventDetail, UniVideoFullScreenChangeEvent, UniVideoFullScreenChangeEventDetail, UniVideoErrorEvent, VideoError, UniVideoProgressEvent, UniVideoProgressEventDetail, UniVideoFullScreenClickEvent, UniVideoFullScreenClickEventDetail, UniVideoControlsToggleEvent, UniVideoControlsToggleEventDetail } from '../interface.uts';
import { UniVideoElement } from './index.vue';

export const createVideoContext : CreateVideoContext = function (videoId : string.VideoIdString, component ?: ComponentPublicInstance | null) : VideoContext | null {
	let videoElement : UniElement | null = null;
	if (component == null) {
		const pages = getCurrentPages();
		if (pages.length > 0) {
			videoElement = pages[pages.length - 1].vm!.$el?.parentNode?.querySelector('#' + videoId);
		}
	} else {
		videoElement = component.$el?.parentNode?.querySelector('#' + videoId);
	}
	if (videoElement == null) return null;
	return new VideoContextImpl(videoElement as UniVideoElement);
}

class VideoContextImpl implements VideoContext {

	private videoElement : UniVideoElement;

	constructor(videoElement : UniVideoElement) {
		this.videoElement = videoElement;
	}

	play() {
		this.videoElement.play();
	}

	pause() {
		this.videoElement.pause();
	}

	seek(position : number) {
		this.videoElement.seek(position);
	}

	stop() {
		this.videoElement.stop();
	}

	sendDanmu(danmu : Danmu) {
		this.videoElement.sendDanmu(danmu);
	}

	playbackRate(rate : number) {
		this.videoElement.playbackRate(rate);
	}

	requestFullScreen(direction ?: RequestFullScreenOptions | null) {
		this.videoElement.requestFullScreen(direction);
	}

	exitFullScreen() {
		this.videoElement.exitFullScreen();
	}
}

export type VideoTimeUpdateEvent = UniVideoTimeUpdateEvent
export type VideoTimeUpdateEventDetail = UniVideoTimeUpdateEventDetail
export type VideoFullScreenChangeEvent = UniVideoFullScreenChangeEvent
export type VideoFullScreenChangeEventDetail = UniVideoFullScreenChangeEventDetail
export type VideoErrorEvent = UniVideoErrorEvent
export type VideoProgressEvent = UniVideoProgressEvent
export type VideoProgressEventDetail = UniVideoProgressEventDetail
export type VideoFullScreenClickEvent = UniVideoFullScreenClickEvent
export type VideoFullScreenClickEventDetail = UniVideoFullScreenClickEventDetail
export type VideoControlsToggleEvent = UniVideoControlsToggleEvent
export type VideoControlsToggleEventDetail = UniVideoControlsToggleEventDetail