Initial commit: restructure to flat layout with ui/ and web/ at root

web/server/lib/notifications/message.js

@@ -0,0 +1,49 @@
+const DEFAULT_NOTIFICATION_MESSAGE_MAX_LENGTH = 250;
+const DEFAULT_NOTIFICATION_SUMMARY_THRESHOLD = 200;
+const DEFAULT_NOTIFICATION_SUMMARY_LENGTH = 100;
+
+const resolvePositiveNumber = (value, fallback) => {
+  if (typeof value !== 'number' || !Number.isFinite(value) || value <= 0) {
+    return fallback;
+  }
+  return value;
+};
+
+export const truncateNotificationText = (text, maxLength = DEFAULT_NOTIFICATION_MESSAGE_MAX_LENGTH) => {
+  if (typeof text !== 'string') {
+    return '';
+  }
+
+  const safeMaxLength = resolvePositiveNumber(maxLength, DEFAULT_NOTIFICATION_MESSAGE_MAX_LENGTH);
+  if (text.length <= safeMaxLength) {
+    return text;
+  }
+
+  return `${text.slice(0, safeMaxLength)}...`;
+};
+
+export const prepareNotificationLastMessage = async ({ message, settings, summarize }) => {
+  const originalMessage = typeof message === 'string' ? message : '';
+  if (!originalMessage) {
+    return '';
+  }
+
+  const shouldSummarize = settings?.summarizeLastMessage === true && typeof summarize === 'function';
+  const summaryThreshold = resolvePositiveNumber(settings?.summaryThreshold, DEFAULT_NOTIFICATION_SUMMARY_THRESHOLD);
+  const summaryLength = resolvePositiveNumber(settings?.summaryLength, DEFAULT_NOTIFICATION_SUMMARY_LENGTH);
+  const maxLastMessageLength = resolvePositiveNumber(settings?.maxLastMessageLength, DEFAULT_NOTIFICATION_MESSAGE_MAX_LENGTH);
+
+  let messageForNotification = originalMessage;
+  if (shouldSummarize && originalMessage.length > summaryThreshold) {
+    try {
+      const summary = await summarize(originalMessage, summaryLength);
+      if (typeof summary === 'string' && summary.trim().length > 0) {
+        messageForNotification = summary;
+      }
+    } catch {
+      messageForNotification = originalMessage;
+    }
+  }
+
+  return truncateNotificationText(messageForNotification, maxLastMessageLength);
+};