// src/lib/jwt.ts
import * as jose from "jose";
import { UserRole } from "@/types/auth";

interface JwtPayload {
  id: string;
  role: UserRole;
  companyId: string;
  branchId: string;
}

export function decodeToken(token: string): JwtPayload | null {
  try {
    // jose를 사용한 디코딩
    const decoded = jose.decodeJwt(token);
    const payload = decoded as unknown as JwtPayload;
    if (payload.id && payload.role && payload.companyId && payload.branchId) {
      return payload;
    }
    return null;
  } catch {
    return null;
  }
}