/* eslint react/prop-types: 0 */
import React from 'react';
import PropTypes from 'prop-types';
import shouldComponentUpdate from 'app/utils/shouldComponentUpdate';

const { string, number } = PropTypes;

/** Lots of iframes in a post can be very slow.  This component only inserts the iframe when it is actually needed. */
export default class YoutubePreview extends React.Component {
    static propTypes = {
        youTubeId: string.isRequired,
        width: number,
        height: number,
        startTime: number,
        dataParams: string,
    };

    static defaultProps = {
        width: 640,
        height: 360,
        startTime: 0,
        dataParams: 'enablejsapi=0&rel=0&origin=https://steemit.com',
    };

    constructor() {
        super();
        this.state = {};
    }

    shouldComponentUpdate = shouldComponentUpdate(this, 'YoutubePreview');

    onPlay = () => {
        this.setState({ play: true });
    };

    render() {
        const { youTubeId, width, height, startTime, dataParams } = this.props;
        const { play } = this.state;

        if (!play) {
            // mqdefault.jpg (medium quality version, 320px × 180px)
            // hqdefault.jpg (high quality version, 480px × 360px
            // sddefault.jpg (standard definition version, 640px × 480px)
            const thumbnail =
                width <= 320
                    ? 'mqdefault.jpg'
                    : width <= 480 ? 'hqdefault.jpg' : '0.jpg';
            const previewLink = `https://img.youtube.com/vi/${youTubeId}/${
                thumbnail
            }`;

            return (
                <div
                    className="videoWrapper youtube"
                    onClick={this.onPlay}
                    style={{
                        backgroundImage: 'url(' + previewLink + ')',
                        height: `${height}px`,
                    }}
                >
                    <div className="play" />
                </div>
            );
        }
        const autoPlaySrc = `https://www.youtube.com/embed/${
            youTubeId
        }?autoplay=1&autohide=1&${dataParams}&start=${startTime}`;

        return (
            <div className="videoWrapper">
                <iframe
                    width={width}
                    height={height}
                    src={autoPlaySrc}
                    frameBorder="0"
                    allowFullScreen="true"
                />
            </div>
        );
    }
}
