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niveum/lib/radio-news.html

144 lines
3.8 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>lassulus radio news</title>
<style>
body {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
main {
max-width: 800px;
margin: 0 auto;
display: grid;
grid-template-columns: 2fr 1fr;
grid-gap: 2em;
}
#news-list ul {
list-style: none;
padding-left: 0;
}
#news-list li {
margin-bottom: 1em;
}
#news-list time {
display: block;
color: grey;
}
form label {
display: block;
}
form input,
form textarea {
width: 100%;
margin-bottom: 1em;
}
@media only screen and (max-width: 768px) {
main {
grid-template-columns: 1fr;
}
}
</style>
<script>
const newsEndpoint = "http://prism.r:7999";
function isoString(date) {
return date.toISOString().slice(0, -5) + "Z";
}
function setNextNews() {
document.getElementById("next-news").innerHTML = (
60 - new Date().getUTCMinutes()
).toString();
}
setInterval(setNextNews, 6000);
function fetchNews() {
fetch(newsEndpoint).then((response) => {
response.json().then((news) => {
const newsList = document.getElementById("news-list");
newsList.innerHTML = "";
const ul = document.createElement("ul");
for (const newsItem of news) {
const start = new Date(newsItem.from);
const end = new Date(newsItem.to);
const li = document.createElement("li");
const startDate = document.createElement("time");
startDate.className = "start";
startDate.title = start.toString();
startDate.setAttribute("datetime", isoString(start));
startDate.appendChild(document.createTextNode(isoString(start)));
const endDate = document.createElement("time");
endDate.className = "end";
endDate.title = end.toString();
endDate.setAttribute("datetime", isoString(end));
endDate.appendChild(document.createTextNode(isoString(end)));
li.appendChild(document.createTextNode(newsItem.text));
li.appendChild(startDate);
li.appendChild(endDate);
ul.appendChild(li);
}
newsList.appendChild(ul);
});
});
}
function sendNews(event) {
event.preventDefault();
const formData = new FormData(event.target);
const request = new XMLHttpRequest();
request.open("POST", newsEndpoint, false); // synchronous
request.send(
JSON.stringify({
from: isoString(new Date(formData.get("from"))),
to: isoString(new Date(formData.get("to"))),
text: formData.get("text"),
})
);
location.reload();
}
window.onload = () => {
setNextNews();
fetchNews();
};
</script>
</head>
<body>
<main>
<section>
<h1>Submit news</h1>
<form onsubmit="sendNews(event)">
<label>Start date</label>
<input type="datetime-local" name="from" required />
<label>End date</label>
<input type="datetime-local" name="to" required />
<label>News text</label>
<textarea name="text" rows="10" required></textarea>
<input type="submit" />
</form>
Next news report should start in <span id="next-news"></span> minutes.
</section>
<aside>
<h1>Planned news</h1>
<div id="news-list">
<em>No news planned yet.</em>
</div>
</aside>
</main>
</body>
</html>