Initial commit

frontend/src/utils/messageParser.ts

@@ -0,0 +1,38 @@
+/**
+ * Parse sender from channel message text.
+ * Channel messages have format "sender: message".
+ */
+export function parseSenderFromText(text: string): { sender: string | null; content: string } {
+  const colonIndex = text.indexOf(': ');
+  if (colonIndex > 0 && colonIndex < 50) {
+    const potentialSender = text.substring(0, colonIndex);
+    // Check for invalid characters that would indicate it's not a sender
+    if (!/[:\[\]]/.test(potentialSender)) {
+      return {
+        sender: potentialSender,
+        content: text.substring(colonIndex + 2),
+      };
+    }
+  }
+  return { sender: null, content: text };
+}
+
+/**
+ * Format a Unix timestamp to a time string.
+ * Shows date for messages not from today.
+ */
+export function formatTime(timestamp: number): string {
+  const date = new Date(timestamp * 1000);
+  const now = new Date();
+  const isToday = date.toDateString() === now.toDateString();
+
+  const time = date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
+
+  if (isToday) {
+    return time;
+  }
+
+  // Show short date for older messages
+  const dateStr = date.toLocaleDateString([], { month: 'short', day: 'numeric' });
+  return `${dateStr} ${time}`;
+}