script.js

const imageContainer = document.getElementById('image-container');
const loader = document.getElementById('loader');
const fwd = document.getElementById('forward');
const button = document.getElementById('slide');
const buttonRight = document.getElementById('slideRight');
const buttonLeft = document.getElementById('slideLeft');

let ready = false;
let imagesLoaded = 0;
let totalImages = 0;
let photosArray = [];

// Unsplash API
let count = 3;
const apiKey = 'QTh-XZKMsc3wSPAPsNs5Y9wK0odx7-UoME6SHcju2Hg';
let apiUrl = `https://api.unsplash.com/photos/random/?client_id=${apiKey}&count=${count}`;

// Check if all images were loaded
function imageLoaded() {
    imagesLoaded++;
    if (imagesLoaded === totalImages) {
        ready = true;
        loader.hidden = true;
        count = 15;
    }
}

// Helper function to set attributes on DOM elements
function setAttributes(element, attributes) {
    for (const key in attributes) {
        element.setAttribute(key, attributes[key]);
    }
}

// Create elements for links and photos, Add to DOM
function displayPhotos() {
    imagesLoaded = 0;
    totalImages = photosArray.length;
    // Run function for each object in photos array
    photosArray.forEach((photo) => {
        // <a> to link to unsplash
        const item = document.createElement('a');
        setAttributes(item, {
            href: photo.links.html,
            target: '_blank',
        });
        // Create image for photo
        const img = document.createElement('img');
        setAttributes(img, {
            src: photo.urls.regular,
            alt: photo.alt_description,
            title: photo.alt_description,
        });

        // Check when each is finished loading
        img.addEventListener('load', imageLoaded);

        // <img> inside <a>, Both inside imageContainer element
        item.appendChild(img);
        imageContainer.appendChild(item);
    });
}

// Get photo's from unsplash API
async function getPhotos() {
    try {
        const response = await fetch(apiUrl);
        photosArray = await response.json();
        displayPhotos();
    } catch (error) {
    // Catch error here
    }
}

// Load more photos
window.addEventListener('scroll', () => {
    if ( window.innerHeight + window.scrollY >= document.body.offsetHeight - 1000 && ready) {
        ready = false;
        getPhotos();
    }
})

buttonRight.onclick = function () {
    ready = false;
    imageContainer.scrollLeft += 1000;
    getPhotos();
        
    
};

buttonLeft.onclick = function () {
    ready = false;
    imageContainer.scrollLeft -= 1000;
    getPhotos();
};


getPhotos();