import { base64UrlToUtf8 } from '@/lib/base64';

export interface JwtPayload {
  authId?: string;
  sub?: string;
  profileId?: string;
  fullName?: string;
  currentCompanyId?: string;
  currentCompanyName?: string;
  currentCompanyRole?: string;
  authOrigin?: string;
  capabilities?: Record<string, string>;
  exp?: number;
  [key: string]: unknown;
}

export function decodeJwt(token: string): JwtPayload | null {
  try {
    const parts = token.split('.');
    if (parts.length !== 3) return null;
    const payload = JSON.parse(base64UrlToUtf8(parts[1]));
    return payload as JwtPayload;
  } catch {
    return null;
  }
}