import { getUsersApi } from "../../api/projectApi";
import { User } from "../../api/projectManager/projectManager";

let userCache: Record<string, string> | null = null;

export async function buildUserMap(): Promise<Record<string, string>> {
  if (userCache) return userCache; 

  const users = await getUsersApi(); 

  const map: Record<string, string> = {};

  users.forEach((user: User) => {
    map[user.userId] = user.userName;
  });

  userCache = map;
  return map;
}

export async function getUserNameById(userId: string): Promise<string> {
  if (!userId) return "—";

  const map = await buildUserMap();
  return map[userId] || "Unknown User";
}


export async function getUserNamesByIds(ids: string[]): Promise<string[]> {
  const map = await buildUserMap();
  return ids.map(id => map[id] || "Unknown User");
}