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/**
* RSS/Atom Feed Preview for Links Table
*/
(function() {
const existingPreviews = document.querySelectorAll('#rss-feed-preview');
existingPreviews.forEach(el => el.remove());
const CORS_PROXY = 'https://cors-anywhere.mayx.eu.org/?';
const createPreviewElement = () => {
const existingPreview = document.getElementById('rss-feed-preview');
if (existingPreview) {
return existingPreview;
}
const previewEl = document.createElement('div');
previewEl.id = 'rss-feed-preview';
previewEl.style.cssText = `
position: fixed;
display: none;
width: 300px;
max-height: 400px;
overflow-y: auto;
background-color: white;
border: 1px solid #ccc;
border-radius: 5px;
padding: 10px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
z-index: 1000;
font-size: 14px;
line-height: 1.4;
`;
document.body.appendChild(previewEl);
return previewEl;
};
const parseRSS = (xmlText) => {
const parser = new DOMParser();
const xml = parser.parseFromString(xmlText, 'text/xml');
const rssItems = xml.querySelectorAll('item');
if (rssItems.length > 0) {
return Array.from(rssItems).slice(0, 5).map(item => {
return {
title: item.querySelector('title')?.textContent || 'No title',
date: item.querySelector('pubDate')?.textContent || 'No date',
};
});
}
const atomItems = xml.querySelectorAll('entry');
if (atomItems.length > 0) {
return Array.from(atomItems).slice(0, 5).map(item => {
return {
title: item.querySelector('title')?.textContent || 'No title',
date: item.querySelector('updated')?.textContent || 'No date',
};
});
}
return null;
};
const checkFeed = async (url) => {
try {
const response = await fetch(CORS_PROXY + url);
if (!response.ok) {
return null;
}
const text = await response.text();
return parseRSS(text);
} catch (error) {
return null;
}
};
const findFeedUrl = async (siteUrl, linkElement) => {
if (linkElement && linkElement.hasAttribute('data-feed')) {
const dataFeedUrl = linkElement.getAttribute('data-feed');
if (dataFeedUrl) {
const feedItems = await checkFeed(dataFeedUrl);
if (feedItems) {
return { url: dataFeedUrl, items: feedItems };
}
}
}
return null;
};
const renderFeedItems = (previewEl, items, siteName) => {
if (!items || items.length === 0) {
previewEl.innerHTML = '<p>No feed items found.</p>';
return;
}
let html = `<h3>Latest from ${siteName}</h3><ul style="list-style: none; padding: 0; margin: 0;">`;
items.forEach(item => {
html += `
<li style="margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px solid #eee;">
<div style="color: #24292e; font-weight: bold;">
${item.title}
</div>
<div style="color: #586069; font-size: 12px; margin: 3px 0;">
${new Date(item.date).toLocaleDateString()}
</div>
</li>
`;
});
html += '</ul>';
previewEl.innerHTML = html;
};
const positionPreview = (previewEl, event) => {
const viewportWidth = window.innerWidth;
const viewportHeight = window.innerHeight;
let left = event.clientX + 20;
let top = event.clientY + 20;
const rect = previewEl.getBoundingClientRect();
if (left + rect.width > viewportWidth) {
left = event.clientX - rect.width - 20;
}
if (top + rect.height > viewportHeight) {
top = event.clientY - rect.height - 20;
}
left = Math.max(10, left);
top = Math.max(10, top);
previewEl.style.left = `${left}px`;
previewEl.style.top = `${top}px`;
};
const initFeedPreview = () => {
const previewEl = createPreviewElement();
const tableLinks = document.querySelectorAll('main table tbody tr td a');
const feedCache = {};
let currentLink = null;
let loadingTimeout = null;
tableLinks.forEach(link => {
link.addEventListener('mouseenter', async (event) => {
currentLink = link;
const url = link.getAttribute('href');
const siteName = link.textContent;
previewEl.innerHTML = '<p>Checking for RSS/Atom feed...</p>';
previewEl.style.display = 'block';
positionPreview(previewEl, event);
if (loadingTimeout) {
clearTimeout(loadingTimeout);
}
loadingTimeout = setTimeout(async () => {
if (feedCache[url]) {
renderFeedItems(previewEl, feedCache[url].items, siteName);
positionPreview(previewEl, event); // Reposition after content is loaded
return;
}
const feedData = await findFeedUrl(url, link);
if (currentLink === link) {
if (feedData) {
feedCache[url] = feedData;
renderFeedItems(previewEl, feedData.items, siteName);
positionPreview(previewEl, event); // Reposition after content is loaded
} else {
previewEl.style.display = 'none';
}
}
}, 300);
});
link.addEventListener('mousemove', (event) => {
if (previewEl.style.display === 'block') {
window.requestAnimationFrame(() => {
positionPreview(previewEl, event);
});
}
});
link.addEventListener('mouseleave', () => {
if (loadingTimeout) {
clearTimeout(loadingTimeout);
loadingTimeout = null;
}
currentLink = null;
previewEl.style.display = 'none';
});
});
document.addEventListener('click', (event) => {
if (!previewEl.contains(event.target)) {
previewEl.style.display = 'none';
}
});
};
if (!window.rssFeedPreviewInitialized) {
window.rssFeedPreviewInitialized = true;
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', initFeedPreview);
} else {
initFeedPreview();
}
}
})();
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