127 lines
4.4 KiB
HTML
127 lines
4.4 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>ntfy.sh</title>
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<style>
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</style>
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</head>
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<body>
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<h1>ntfy.sh</h1>
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<p>
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ntfy.sh is a super simple pub-sub notification service. It allows you to send desktop and (soon) phone notifications
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via scripts, without signup or cost. It's entirely free and open source. You can find the source code <a href="https://github.com/binwiederhier/ntfy">on GitHub</a>.
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</p>
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<p>
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You can subscribe to a topic either in this web UI, or in your own app by subscribing to an SSE/EventSource
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or JSON feed. Once subscribed, you can publish messages via PUT or POST.
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</p>
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<p id="error"></p>
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<form id="subscribeForm">
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<input type="text" id="topicField" size="64" autofocus />
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<input type="submit" id="subscribeButton" value="Subscribe topic" />
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</form>
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<p>Topics:</p>
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<ul id="topicsList">
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</ul>
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<script type="text/javascript">
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let topics = {};
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const topicField = document.getElementById("topicField");
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const topicsList = document.getElementById("topicsList");
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const subscribeButton = document.getElementById("subscribeButton");
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const subscribeForm = document.getElementById("subscribeForm");
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const errorField = document.getElementById("error");
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const subscribe = (topic) => {
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if (Notification.permission !== "granted") {
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Notification.requestPermission().then((permission) => {
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if (permission === "granted") {
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subscribeInternal(topic, 0);
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}
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});
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} else {
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subscribeInternal(topic, 0);
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}
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};
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const subscribeInternal = (topic, delaySec) => {
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setTimeout(() => {
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// Render list entry
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let topicEntry = document.getElementById(`topic-${topic}`);
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if (!topicEntry) {
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topicEntry = document.createElement('li');
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topicEntry.id = `topic-${topic}`;
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topicEntry.innerHTML = `${topic} <button onclick="unsubscribe('${topic}')">Unsubscribe</button>`;
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topicsList.appendChild(topicEntry);
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}
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// Open event source
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let eventSource = new EventSource(`${topic}/sse`);
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eventSource.onopen = () => {
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topicEntry.innerHTML = `${topic} <button onclick="unsubscribe('${topic}')">Unsubscribe</button>`;
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delaySec = 0; // Reset on successful connection
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};
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eventSource.onerror = (e) => {
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console.log("onerror")
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const newDelaySec = (delaySec + 5 <= 30) ? delaySec + 5 : 30;
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topicEntry.innerHTML = `${topic} <i>(Reconnecting in ${newDelaySec}s ...)</i> <button onclick="unsubscribe('${topic}')">Unsubscribe</button>`;
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eventSource.close()
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subscribeInternal(topic, newDelaySec);
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};
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eventSource.onmessage = (e) => {
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const event = JSON.parse(e.data);
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new Notification(event.message);
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};
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topics[topic] = eventSource;
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localStorage.setItem('topics', JSON.stringify(Object.keys(topics)));
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}, delaySec * 1000);
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};
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const unsubscribe = (topic) => {
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topics[topic].close();
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delete topics[topic];
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localStorage.setItem('topics', JSON.stringify(Object.keys(topics)));
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document.getElementById(`topic-${topic}`).remove();
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};
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subscribeForm.onsubmit = function () {
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if (!topicField.value) {
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return false;
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}
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subscribe(topicField.value);
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topicField.value = "";
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return false;
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};
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// Disable Web UI if notifications of EventSource are not available
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if (!window["Notification"] || !window["EventSource"]) {
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errorField.innerHTML = "Your browser is not compatible to use the web-based desktop notifications.";
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topicField.disabled = true;
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subscribeButton.disabled = true;
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} else if (Notification.permission === "denied") {
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errorField.innerHTML = "You have blocked desktop notifications for this website. Please unblock them and refresh to use the web-based desktop notifications.";
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topicField.disabled = true;
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subscribeButton.disabled = true;
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}
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// Reset UI
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topicField.value = "";
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// Restore topics
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const storedTopics = localStorage.getItem('topics');
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if (storedTopics) {
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JSON.parse(storedTopics).forEach((topic) => {
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subscribeInternal(topic, 0);
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});
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}
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</script>
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</body>
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</html>
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