Upgrade Google Apps Script Authentication

@legendsolution

Hi there, I assure you 100% that I will deliver the complete project within the agreed timeline and with high quality. I have carefully read every word of your requirements and have already evaluated the process needed to deliver this work on time. I would be grateful for the opportunity to move forward with this exciting project. I am genuinely enthusiastic about working on it and delivering results that exceed your expectations. With 5 years of experience as a Web and App Developer, I have successfully delivered thousands of projects across various platforms, focusing on performance, scalability, and clean code. I am now beginning my journey on Freelancer and would truly appreciate the opportunity to prove my skills here. I am looking forward to discussing your project in more detail. Best regards, Legend Code IT Solution

@adielhandika

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@sumaanyu

Hello, Thank you for sharing the details of your Google Apps Script web application. I understand that you currently have multiple pages served through individual doGet handlers, with only one page integrated into your custom login flow. The goal is to refactor the project so that all pages are consistently protected by the same session-based authentication and cannot be accessed directly without a valid session. I can restructure your app to use a centralized routing and authentication mechanism, ensuring that every protected page checks for a valid session token before rendering. Unauthenticated users will be automatically redirected to the login page, and the originally requested URL will be preserved so they are sent back to the correct page after successful sign-in. This approach will also prevent any bypass through manual URL or parameter manipulation. The implementation will remain fully within Google Apps Script, using lightweight, vanilla JavaScript and the HTMLService templating helpers you already rely on. I will keep the code modular, clearly commented, and easy to maintain, so adding new protected pages in the future remains straightforward. All changes will be delivered as a single consolidated .gs file along with the necessary updates to your existing HTML templates. I would be happy to review your current repository and demo account to ensure the refactor integrates smoothly with what you already have. Thank you for considering my proposal.

@nadiad382

Getting a perfect fit for your project is as easy as understanding the need for seamless, session-based authentication across all your Google Apps Script web-app pages. Your requirement to extend login logic to protect every doGet page, with clean, modular code and client-side simplicity using vanilla JS, aligns perfectly with my expertise. I specialize in Google Apps Script development, building integrated, automated systems with clean and professional code. While I am new to Freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Nadia Du Preez