const preact = require('preact');
const { Component } = require('preact');
const times = require('lodash/times');

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

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

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

    render() {
        return (
            <svg
                class='skill-animation blue'
                version="1.1"
                id="electrify"
                xmlns="http://www.w3.org/2000/svg"
                viewBox="0 0 500 500">
                <defs>
                    <filter id="electrifyFilter">
                        <feGaussianBlur in="SourceGraphic" stdDeviation="5" />
                        <feMerge>
                            <feMergeNode />
                            <feMergeNode in="SourceGraphic" />
                        </feMerge>
                    </filter>
                </defs>
                <path
                    class='blue'
                    transform="translate(53.86742,49.72374)"
                    filter='url("#electrifyFilter")'
                    d="M 440,200 L 407,320 L 320,407 L 200,440 L 80,407 L -7,320 L -40,200 L -7,80 L 80,-7 L 200,-40 L 320,-7 L 407,80 L 440,200"
                />
                <path
                    class='white'
                    transform="translate(53.86742,49.72374)"
                    d="M 440,200 L 407,320 L 320,407 L 200,440 L 80,407 L -7,320 L -40,200 L -7,80 L 80,-7 L 200,-40 L 320,-7 L 407,80 L 440,200"
                    filter='url("#electrifyFilter")'
                />
            </svg>
        );
    }

    componentDidMount() {
        this.animations.push(anime({
            targets: ['#electrify'],
            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',
        }));

        const path = () => {
            const startX = anime.random(420, 440);
            const startY = anime.random(180, 200);
            return `
                M ${startX},${startY}
                L ${anime.random(387, 407)},${anime.random(300, 320)}
                L ${anime.random(300, 320)},${anime.random(387, 407)}
                L ${anime.random(180, 200)},${anime.random(420, 440)}
                L ${anime.random(60, 80)},${anime.random(387, 407)}
                L ${anime.random(-27, 7)},${anime.random(300, 320)}
                L ${anime.random(-20, -40)},${anime.random(180, 200)}
                L ${anime.random(-27, 7)},${anime.random(60, 80)}
                L ${anime.random(60, 80)},${anime.random(-27, 7)}
                L ${anime.random(180, 200)},${anime.random(-20, -40)}
                L ${anime.random(300, 320)},${anime.random(-27, 7)}
                L ${anime.random(387, 407)},${anime.random(60, 80)}
                L ${startX},${startY}
            `;
        };

        this.animations.push(anime({
            targets: ['#electrify path'],
            d: times(10, path),
            easing: 'easeInOutSine',
            loop: true,
            duration: TIMES.TARGET_DURATION_MS / 5,
        }));

        this.animations.push(anime({
            targets: ['#electrify path.white'],
            strokeWidth: [2, 1],
            easing: 'easeInOutSine',
            direction: 'alternate',
            loop: true,
            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 = Electrify;
