// Dynamic content v1.0.1
// - Displays content with the most recent activeDate <= current time
// - Test with ?today=01/01/2025+18:00:00

// Convert a date string or Date object to Eastern Time
function toEasternTime(input) {
    return new Date(
        new Date(input).toLocaleString('en-US', { timeZone: 'America/New_York' })
    );
}

var params = new URLSearchParams(window.location.search);
var todayParam = params.get('today');
var cNow = todayParam ? toEasternTime(decodeURIComponent(todayParam)) : toEasternTime(new Date());

// Collect and map active elements with parsed Eastern Time dates
var dateElements = Array.from(document.querySelectorAll('[data-active-date]')).map(function(el) {
    return {
        el: el,
        date: toEasternTime(el.dataset.activeDate)
    };
});

// Sort ascending
dateElements.sort(function(a, b) {
    return a.date - b.date;
});

// Find most recent matching element
var matched = null;
for (var i = 0; i < dateElements.length; i++) {
    if (cNow >= dateElements[i].date) matched = dateElements[i];
    else break;
}

// Show matched, remove others
for (var j = 0; j < dateElements.length; j++) {
    var el = dateElements[j].el;
    var date = dateElements[j].date;

    if (matched && date.getTime() === matched.date.getTime()) {
        el.style.display = 'block';
        el.removeAttribute('data-active-date');

        // Apply data-e-video-id to any .e-video child
        var videoId = el.getAttribute('data-active-video-id');
        if (videoId) {
            var video = el.querySelector('.e-video');
            if (video) {
                video.setAttribute('data-e-video-id', videoId);
            }
        }

        // Remove the data-active-video-id from the parent
        el.removeAttribute('data-active-video-id');
    } else {
        el.remove();
    }
}