Expense Tracker

Expense Tracker is a user-friendly web application designed to help you efficiently manage your finances. With this application, users can easily register and log in, organize their expenses and incomes by categories, and perform a range of actions such as adding, updating, deleting, and viewing transactions. Additionally, it provides a comprehensive overview of your financial balance, allowing you to keep track of all your transactions in one place.

Features

• User authentication (register and login / login with OTP)
• Manage expense categories
• Track expenses
• Track incomes
• View balance and all transactions
• View, update, and delete individual expenses and incomes
• View and update user details

API Endpoints

Authentication

• POST /api/v1/auth/login: Log in a user.
• POST /api/v1/auth/register: Register a new user.
• POST /api/v1/auth/generateOTP: Generate OTP for User Login.
• POST /api/v1/auth/confirmOTP: Confirm OTP for User Login.

Category Management

• GET /api/v1/category/: Get all categories.
• POST /api/v1/category/: Add a new category.

Expense Management

• POST /api/v1/expense/: Add a new expense.
• GET /api/v1/expense/: Get all expenses.
• GET /api/v1/expense/:id: Get one expense with provided ID.
• DELETE /api/v1/expense/:id: Delete one expense.
• PUT /api/v1/expense/:id: Update an expense.

Income Management

• POST /api/v1/income/: Add a new income.
• GET /api/v1/income/: Get all incomes.
• GET /api/v1/income/:id: Get one income with provided ID.
• DELETE /api/v1/income/:id: Delete one expense with provided ID.
• PUT /api/v1/income/:id: Update an expense with provided ID.

User Management

• GET /api/v1/user/:id: Get user details.
• PUT /api/v1/user/:id: Update user password.

Balance Management

• GET /api/v1/balance/: Get user balance.(total income - total expense)
• GET /api/v1/balance/transactions: Get all transactions of user.

Packages Used

• bcrypt: A library to help you hash passwords.
• dotenv: A zero-dependency module that loads environment variables from a .env file into process.env.
• express: A minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.
• jsonwebtoken: A library to sign and verify JSON Web Tokens (JWTs).
• mongoose: A MongoDB object modeling tool designed to work in an asynchronous environment.
• nodemailer: A Node.js module for sending emails using SMTP with support for various email services and authentication methods.
• otp-generator-random: A lightweight package for generating random one-time passwords (OTPs) with customizable options.
• crypto: A built-in Node.js module providing cryptographic functionality, including hashing, encryption, and generating secure random values. Used to create acess & refresh token.

Dev Dependencies

• nodemon: A tool that helps develop Node.js based applications by automatically restarting the node application when file changes in the directory are detected.

Getting Started

Prerequisites

Make sure you have Node.js and npm installed on your machine.

Installation

1. Clone the repository:

   git clone https://github.com/Syed-Sarkheel/Expense-Tracker-Backend
   cd Expense-Tracker-Backend

2. Install the dependencies:

   npm install

3. Create a .env file in the root directory and add the following environment variables using the .env.sample file.

4. Create an App Password from https://myaccount.google.com/security and paste it in MAIL_PASS at .env and enter your mail id at MAIL_USER.

5. Create your own ACCESS_TOKEN_SECRET and REFRESH_TOKEN_SECRET by running secrets.js.

Running the Application

Start the server in development mode:

npm run dev

• Register a new user using the /api/v1/auth/register endpoint.
• Log in with your registered credentials using the /api/v1/auth/login endpoint to obtain a token.
• Use the token to authenticate subsequent requests to manage categories and expenses.

---

Syed Sarkheel Baseer