feat(web): add formatDmTimestamp utility with smart date formatting

2026-04-02 17:47:18 +02:00
parent 416636530a
commit 03667947aa
2 changed files with 90 additions and 0 deletions
@@ -0,0 +1,30 @@
+/**
+ * Smart timestamp for DM sidebar items.
+ * Today → time ("4:32 PM"), Yesterday → "Yesterday",
+ * This year → "Mar 31", Older → "Dec 14, 2025"
+ */
+export function formatDmTimestamp(createdAt: number): string {
+  const now = new Date();
+  const date = new Date(createdAt);
+
+  // Build "start of today" and "start of yesterday" in local time
+  const startOfToday = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+  const startOfYesterday = new Date(startOfToday.getTime() - 86400000);
+
+  if (date >= startOfToday) {
+    // Today — show time
+    return date.toLocaleTimeString(undefined, { hour: 'numeric', minute: '2-digit' });
+  }
+
+  if (date >= startOfYesterday) {
+    return 'Yesterday';
+  }
+
+  if (date.getFullYear() === now.getFullYear()) {
+    // This year — "Mar 31"
+    return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
+  }
+
+  // Previous year — "Dec 14, 2025"
+  return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric', year: 'numeric' });
+}