import { LinearFilter } from '../constants.js';
import { Texture } from './Texture.js';

class VideoTexture extends Texture {
	constructor(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
		super(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);

		this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;

		this.generateMipmaps = false;

		const scope = this;

		function updateVideo() {
			scope.needsUpdate = true;
			video.requestVideoFrameCallback(updateVideo);
		}

		if ('requestVideoFrameCallback' in video) {
			video.requestVideoFrameCallback(updateVideo);
		}
	}

	clone() {
		return new this.constructor(this.image).copy(this);
	}

	update() {
		const video = this.image;
		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;

		if (hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA) {
			this.needsUpdate = true;
		}
	}
}

VideoTexture.prototype.isVideoTexture = true;

export { VideoTexture };