const preact = require('preact');
const { Component } = require('preact');

const anime = require('animejs').default;

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

// shamelessly lifted from teh anime docs
// https://animejs.com/documentation/#svgAttr

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

    render() {
        return (
            <svg
                class='skill-animation blue'
                version="1.1"
                id="hex"
                xmlns="http://www.w3.org/2000/svg"
                viewBox="0 0 128 128">
                <filter id='hexFilter'
                    key={Date.now()}>
                    <feTurbulence type="turbulence" baseFrequency="0.05" numOctaves="2" result="turbulence" style="transform: scale(1);"></feTurbulence>
                    <feDisplacementMap in2="turbulence" in="SourceGraphic" scale="15" xChannelSelector="R" yChannelSelector="G"></feDisplacementMap>
                </filter>
                <polygon
                    key={Date.now()}
                    points="64 68.64 8.574 100 63.446 67.68 64 4 64.554 67.68 119.426 100"
                    style={{ filter: 'url("#hexFilter")' }}>
                </polygon>
            </svg>
        );
    }

    componentDidMount() {
        this.animations.push(anime({
            targets: ['#hex'],
            opacity: 1,

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

        this.animations.push(anime({
            targets: ['#hex polygon'],
            points: '64 124.94732621931382 8.574 96.00354944613788 8.62269130211947 32.03166105954991 64 4 119.37730869788052 32.03166105954991 119.426 96.00354944613788',
            easing: 'easeOutExpo',

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

        this.animations.push(anime({
            targets: ['feTurbulence', 'feDisplacementMap'],
            baseFrequency: 0,
            scale: 1,
            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 = Hex;
