const preact = require('preact');
const { Component } = require('preact');
const anime = require('animejs').default;

const { TIMES } = require('../../constants');

class Recharge extends Component {
    constructor() {
        super();
        this.animations = [];
    }

    render() {
        return (
            <svg
                class='skill-animation red'
                version="1.1"
                id="recharge"
                xmlns="http://www.w3.org/2000/svg"
                viewBox="0 0 256 256">
                <filter id='rechargeFilter'>
                    <feTurbulence type="turbulence" baseFrequency="0" numOctaves="1" result="turbulence"></feTurbulence>
                    <feDisplacementMap in2="turbulence" in="SourceGraphic" scale="1" xChannelSelector="R" yChannelSelector="G"></feDisplacementMap>
                </filter>
                <filter id="rechargeBlueFilter">
                    <feGaussianBlur in="SourceGraphic" stdDeviation="5" />
                    <feMerge>
                        <feMergeNode />
                        <feMergeNode in="SourceGraphic" />
                    </feMerge>
                </filter>
                <path
                    class='red'
                    filter='url("#rechargeFilter")'
                    d='M64,128 h-50 M64,128 h50 M64,128 v50 M64,128 v-50'
                />
                <path
                    class='blue'
                    filter='url("#rechargeBlueFilter")'
                    d='M192,128 h-50 M192,128 h50 M192,128 v50 M192,128 v-50'
                />
                <path
                    class='white'
                    d='M192,128 h-50 M192,128 h50 M192,128 v50 M192,128 v-50'
                />
            </svg>
        );
    }

    componentDidMount() {
        this.animations.push(anime({
            targets: ['#recharge'],
            opacity: [
                { value: 1, delay: TIMES.TARGET_DELAY_MS, duration: TIMES.TARGET_DURATION_MS * 0.2 },
                { value: 0, delay: TIMES.TARGET_DURATION_MS * 0.6, duration: TIMES.TARGET_DURATION_MS * 0.2 },
            ],
            easing: 'easeInOutSine',
        }));

        this.animations.push(anime({
            targets: ['#recharge path.white'],
            strokeWidth: [2, 1],
            easing: 'easeInOutSine',
            direction: 'alternate',

            delay: TIMES.TARGET_DELAY_MS,
            duration: TIMES.TARGET_DURATION_MS,
        }));

        this.animations.push(anime({
            targets: ['#rechargeFilter feTurbulence', ' #rechargeFilter feDisplacementMap'],
            baseFrequency: 2,
            scale: 10,
            numOctaves: 5,

            easing: 'easeOutSine',
            delay: TIMES.TARGET_DELAY_MS,
            duration: TIMES.TARGET_DURATION_MS,
        }));
    }

    // this is necessary because
    // skipping / timing / unmounting race conditions
    // can cause the animations to cut short, this will ensure the values are reset
    // because preact will recycle all these components
    componentWillUnmount() {
        for (let i = this.animations.length - 1; i >= 0; i--) {
            this.animations[i].reset();
        }
    }
}

module.exports = Recharge;
