import { randomUUID } from 'node:crypto';

interface Session {
  username: string;
  createdAt: number;
}

const sessions = new Map<string, Session>();

export function createSession(username: string): string {
  const token = randomUUID();
  sessions.set(token, { username, createdAt: Date.now() });
  return token;
}

export function validateSession(token: string): Session | null {
  return sessions.get(token) ?? null;
}

export function removeSession(token: string): void {
  sessions.delete(token);
}