//use strict;

//import * as Farapp from './fara.js';
let homeRE = new RegExp(/(https?:\S+\/$|index.html$)/);

if (homeRE.test(window.location.href)) {
    window.addEventListener('load', () => {
        let nextimage = 0;
        let header = document.querySelector('header');
        slider();
        
        function slider() {
            /*** Fade in??*/
            //opacity = 1;

        let images = [
                'img/fara_background.jpg',
                //'img/fara_bg_2.jpg',
                'img/fara_bg_3.jpg',
                'img/fara_bg_4.jpg',
                'img/fara_bg_5.jpg',
                //'img/fara_bg_6.jpg',
                'img/fara_bg_7.jpg',
                'img/fara_bg_8.jpg',
                'img/fara_bg_9.jpg',
                'img/fara_bg_10.png',
                'img/fara_bg_11.jpg',
            ];
            
            if (nextimage >= images.length) {
            nextimage = 0;
        }
        header.setAttribute('style', 'background-image : url("' + images[nextimage++] + '");');
        setTimeout(slider, 2000);
       }
    });
}
/**
 * Apply active class to selected link...
 * @todo Inefficient!!
 */
window.addEventListener('load', () => {
    let navlinks = Array.from(document.querySelectorAll('#links a'));

    navlinks.forEach(element => {
        let ref = element.href.substr(element.href.lastIndexOf('/'), element.href.length);
        
        if (window.location.href.includes(ref)) {
            element.setAttribute('class', 'active');
        }
        if (homeRE.test(window.location.href)) {
            navlinks[0].setAttribute('class', 'active');
        }
    });
});

window.addEventListener('scroll', event => {
    let nav = document.querySelector('#nav');
    let links = document.querySelector('#links');

    if (window.pageYOffset !== 0) {
        nav.classList.add('bg-white', 'border');
        nav.classList.remove('text-gray');
        links.classList.add('nav-dark');
        links.classList.remove('nav-light');
    }
    else {
        nav.classList.add('text-gray');
        nav.classList.remove('bg-white', 'border');
        links.classList.add('nav-light');
        links.classList.remove('nav-dark');
    }
});