export type Portal = 'admin' | 'client';

export type SessionUser = {
  id: string;
  tenantId?: string | null;
  tenantName?: string | null;
  username: string;
  email?: string | null;
  phone?: string | null;
  displayName: string;
  roles: string[];
};

export type LoginSession = {
  accessToken: string;
  tokenType: string;
  portal: Portal;
  user: SessionUser;
};

const sessionKey = 'cmpp-auth-session';

export function readSession(): LoginSession | null {
  try {
    const raw = window.localStorage.getItem(sessionKey);
    return raw ? JSON.parse(raw) as LoginSession : null;
  } catch {
    return null;
  }
}

export function writeSession(session: LoginSession) {
  window.localStorage.setItem(sessionKey, JSON.stringify(session));
}

export function clearSession() {
  window.localStorage.removeItem(sessionKey);
}

export function getSessionTenantId() {
  return readSession()?.user.tenantId ?? undefined;
}