add message rendering, fix sse cancling, add user id copying

src/lib/utils.ts

@@ -4,6 +4,25 @@ import { twMerge } from 'tailwind-merge';
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
+export function formatTimestamp(dateString: string) {
+  const date = new Date(dateString);
+  const now = new Date();
+
+  const isToday =
+    date.getDate() === now.getDate() &&
+    date.getMonth() === now.getMonth() &&
+    date.getFullYear() === now.getFullYear();
+
+  const pad = (n: number) => n.toString().padStart(2, '0');
+
+  if (isToday) {
+    return `${pad(date.getHours())}:${pad(date.getMinutes())}`;
+  } else {
+    return `${pad(date.getDate())}/${pad(date.getMonth() + 1)}/${date.getFullYear()}, ${pad(
+      date.getHours()
+    )}:${pad(date.getMinutes())}`;
+  }
+}
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 export type WithoutChild<T> = T extends { child?: any } ? Omit<T, 'child'> : T;