Task Planner

A lightweight cloud-synced task planner with email OTP signup, PRN-based authentication, and AWS-backed persistence.

Project Overview

This project includes:

• index.html — static frontend UI for signup, login, task creation, and task management
• Backend/index.mjs — AWS Lambda handler for signup, login, OTP delivery, and task sync
• Backend/DEPLOYMENT_GUIDE.md — deployment instructions for AWS API Gateway, Lambda, DynamoDB, and SES

The app is designed as a browser-first task planner that stores user accounts and tasks in DynamoDB and uses AWS SES for OTP email verification.

Features

• Email OTP verification during signup
• Login with PRN and password
• Add, complete, and delete tasks
• Task priority and estimated hours
• Cloud sync to AWS via API Gateway + Lambda
• Progress bar and task stats

Architecture

• Frontend: static HTML/CSS/JavaScript in index.html
• Backend: AWS Lambda in Backend/index.mjs
• Database: DynamoDB table todo-users
• Email service: AWS SES for OTP emails
• API layer: API Gateway HTTP API routes

Files

• index.html — complete single-page frontend
• Backend/index.mjs — Lambda handler using AWS SDK v3
• Backend/DEPLOYMENT_GUIDE.md — deployment and AWS configuration guide

Setup

1. Open index.html in your browser to run the app as a static frontend.
2. Configure the backend API endpoint by updating the API constant near the top of index.html.

const API = 'https://YOUR_API_ID.execute-api.us-east-1.amazonaws.com';

3. Deploy the backend following Backend/DEPLOYMENT_GUIDE.md.

AWS Backend Requirements

• DynamoDB table: todo-users
• Lambda runtime: Node.js 20.x
• Environment variable: SENDER_EMAIL set to a verified SES sender address
• SES identity verification for the sender email (and recipient email if the account is in sandbox mode)

Usage

1. Open the app in a browser.
2. Choose Sign Up to create an account.
3. Enter name, PRN, password, and email.
4. Send OTP and verify the code.
5. Create your account and start adding tasks.
6. Use Login to sign in after account creation.

Notes

• The current frontend uses a hard-coded AWS API URL in index.html.
• Passwords are stored in plaintext in DynamoDB in the current implementation. For production use, add password hashing.
• Task sync is triggered automatically on create, update, and delete.

Security Considerations

• Hash passwords before storing them in production.
• Remove OTP records after successful verification.
• Restrict CORS origins to your trusted domain instead of *.
• Add rate limiting to the OTP endpoint to prevent abuse.

License

This repository does not include a specific license file.