import { makeIDGen } from "./util";

const playlistIndexGen = makeIDGen(0);

export abstract class Playlist {
	constructor(public index = playlistIndexGen.next().value) {}

	abstract toXML(): string;
}

export class AudioPlaylist extends Playlist {
	toXML() {
		return /* HTML */ ` <playlist id="playlist${this.index}">
			<property name="kdenlive:audio_track">1</property>
		</playlist>`;
	}
}

export class VideoPlaylist extends Playlist {
	toXML() {
		return /* HTML */ ` <playlist id="playlist${this.index}"></playlist>`;
	}
}