getSessionId.ts

/**
 * Copyright (c) 2025, WSO2 LLC. (https://www.wso2.com).
 *
 * WSO2 LLC. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

'use server';

import {cookies} from 'next/headers';
import SessionManager, {SessionTokenPayload} from '../../utils/SessionManager';

type RequestCookies = Awaited<ReturnType<typeof cookies>>;

/**
 * Get the session ID from cookies.
 * Tries JWT session first, then falls back to legacy session ID.
 *
 * @returns The session ID if it exists, undefined otherwise
 */
const getSessionId = async (): Promise<string | undefined> => {
  const cookieStore: RequestCookies = await cookies();

  const sessionToken: string | undefined = cookieStore.get(SessionManager.getSessionCookieName())?.value;

  if (sessionToken) {
    try {
      const sessionPayload: SessionTokenPayload = await SessionManager.verifySessionToken(sessionToken);

      return sessionPayload.sessionId;
    } catch (error) {
      return undefined;
    }
  }

  return undefined;
};

export default getSessionId;