const response = await fetch('https://api.instantworkstation.com/workstations');
const workstations = await response.json();

const now = new Date();
const recent = new Date(now);

recent.setUTCDate(now.getUTCDate() - 30);
recent.setUTCHours(0, 0, 0, 0);

const recentWorkstations = workstations.filter(isRecent);
const news = recentWorkstations.flatMap(generateNews);
const ticker = document.getElementById('news-ticker-content');

let index = 0;
if (news.length > 0) {
    ticker.textContent = news[index];
    ticker.addEventListener('animationiteration', showNextAnnouncement);
    ticker.style.animationPlayState = 'running';
}

function generateNews(workstation) {
    return workstation.architectures.map(architecture => {
        const workstationDetails = `${workstation.os} ${workstation.version}`;
        const architectureDetails = `${architecture.cpu} ${architecture.bitness} ${architecture.endianness}`;

        return `${workstationDetails} ${architectureDetails} is now available`;
    });
}

function isRecent(workstation) {
    const added = new Date(workstation.added);

    return added >= recent;
}

function showNextAnnouncement() {
    index++;

    if (index < news.length) {
        ticker.textContent = news[index];
    } else {
        ticker.removeEventListener('animationiteration', showNextAnnouncement);
        ticker.style.animationPlayState = 'paused';
        ticker.textContent = '';
    }
}