@gofynd/fdk-extension-javascript/express/session/session_storage.js

FDK Extension Helper Library

'use strict';
const Session = require("./session");
const { extension } = require("./../extension");
const logger = require("../logger");

class SessionStorage {
    constructor() {
    }

    /**
     * Saves a session to the storage.
     * @param {Object} session - The session object to save.
     * @returns {Promise<string>} The result of the set operation.
     */
    static async saveSession(session) {
        if(session.expires) {
            // Convert session.expires from milliseconds to seconds
            let ttl = (new Date() - session.expires) / 1000;
            ttl = Math.abs(Math.round(Math.min(ttl, 0)));
            return extension.storage.setex(session.id, session.toJSON(), ttl);
        } else {
            return extension.storage.set(session.id, session.toJSON());
        }
    }

    /**
     * Retrieves a session from the storage.
     * @param {string} sessionId - The ID of the session to retrieve.
     * @returns {Promise<Object|null>} The session object or null if not found.
     */
    static async getSession(sessionId) {
        let session = await extension.storage.get(sessionId);
        if(session) {
            session = Session.cloneSession(sessionId, session, false);
        }
        else {
            logger.debug(`Session data not found for session id ${sessionId}`);
        }
        return session;
    }

    /**
     * Deletes a session from the storage.
     * @param {string} sessionId - The ID of the session to delete.
     * @returns {Promise<void>}
     */
    static async deleteSession(sessionId) {
        return extension.storage.del(sessionId);
    }
}

module.exports = SessionStorage;