60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
// Simple notification helpers for the chat client.
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const APP_NAME = "COMS";
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function supportsNotifications() {
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return typeof Notification !== "undefined";
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}
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function stripHtml(input) {
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const div = document.createElement("div");
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div.innerHTML = input;
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return div.textContent || div.innerText || "";
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}
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/**
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* Ask for permission if not already granted/denied.
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*/
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function primeNotifications() {
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if (!supportsNotifications()) return;
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if (Notification.permission === "default") {
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Notification.requestPermission();
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}
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}
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function showNotification(title, body) {
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if (!supportsNotifications()) return;
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const options = { body };
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if (Notification.permission === "granted") {
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new Notification(title, options);
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} else if (Notification.permission === "default") {
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Notification.requestPermission().then((perm) => {
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if (perm === "granted") new Notification(title, options);
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});
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}
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}
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/**
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* Notify the user of a system notice.
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* @param {string} content - HTML or text content of the notice.
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*/
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function notifyNotice(content) {
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const text = stripHtml(content);
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if (!text) return;
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showNotification(`${APP_NAME} notice`, text);
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}
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/**
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* Notify the user that someone replied directly to their thread.
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* @param {string} authorName
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* @param {string} content
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*/
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function notifyDirectReply(authorName, content) {
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const text = stripHtml(content);
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if (!text) return;
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const name = authorName || "Anon";
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showNotification(`${name} replied to your thread`, text);
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}
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export { primeNotifications, notifyNotice, notifyDirectReply };
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