require('particles.js')

class Particles {
    constructor(w) {
        this.window = w
    }

    start() {
        if (this.window.innerWidth < 708) {
            return
        }

        const height = this.header.offsetHeight
        const width = this.header.offsetWidth

        this.particles.style.maxHeight = height + 'px'
        this.particles.style.maxWidth = width + 'px'

        particlesJS.load('particles', '/js/particles.json?v=3')
    }

    clean() {
        this.particles.innerHTML = ''
    }

    init() {
        this.particles = this.window.document.getElementById('particles')

        if (!this.particles) {
            return
        }

        this.header = this.particles.parentNode

        this.clean()
        this.start()

        const that = this

        this.window.addEventListener('resize', function() {
            that.clean()
            that.start()
        }, false)
    }
}

module.exports = Particles