Coding Platform

A full-stack coding challenge platform built with Go. Practice algorithmic problems, run code in multiple languages, and track your progress—all in one place.

Features

• User Authentication — Sign up, login, and logout with JWT-based sessions
• Two-Factor Authentication (2FA) — TOTP-based OTP verification for enhanced security
• Coding Challenges — Browse and solve algorithmic problems with Easy, Medium, and Hard difficulty levels
• Live Code Execution — Write and run code in Python, Java, and more via the JDoodle API
• Test Case Validation — Submit solutions and get instant feedback on sample test cases
• Submission History — Track all your past submissions and solutions
• Premium Tier — Stripe-powered checkout for premium challenges
• Admin Dashboard — Role-based access for challenge creation and management
• Customer Care — Built-in support page for user assistance

Tech Stack

• Backend: Go 1.21
• Database: PostgreSQL
• Auth: JWT, TOTP (2FA)
• Payments: Stripe
• Code Execution: JDoodle API
• Templates: Go html/template

Prerequisites

• Go 1.21+
• PostgreSQL
• JDoodle API credentials (for code execution)
• Stripe account (for premium features)

Quick Start

1. Clone and install dependencies

git clone https://github.com/yourusername/coding-platform.git
cd coding-platform
go mod download

2. Configure the database

Create a PostgreSQL database and run the initial schema:

psql -U postgres -d coding-platform -f database/1_initial_setup.up.sql

Update config/properties.yaml with your database credentials:

database:
  - name: coding-platform
  - host: localhost
  - port: 5432
  - user: postgres
  - password: your_password

Or use environment variables:

export DB_HOST=localhost
export DB_PORT=5432
export DB_USER=postgres
export DB_PASSWORD=your_password
export DB_NAME=coding-platform

3. Run the application

go run ./cmd/platform

The server starts at http://localhost:7074

Docker

docker build -t coding-platform .
docker run -p 7074:7074 \
  -e DB_HOST=host.docker.internal \
  -e DB_PORT=5432 \
  -e DB_USER=postgres \
  -e DB_PASSWORD=your_password \
  -e DB_NAME=coding-platform \
  coding-platform

Environment Variables

Variable	Description	Default
DB_HOST	PostgreSQL host	from config
DB_PORT	PostgreSQL port	from config
DB_USER	Database user	from config
DB_PASSWORD	Database password	from config
DB_NAME	Database name	from config
DOMAIN_URL	Base URL for Stripe redirects	http://localhost:7074
PRICE_ID	Stripe Price ID for premium	(hardcoded)

Project Structure

├── cmd/platform/     # Application entry point
├── config/           # Configuration and challenge metadata
├── database/         # DB connection and migrations
├── handler/           # HTTP handlers (auth, challenges, compile, checkout)
├── middlewares/       # JWT authentication middleware
├── models/            # Data models
├── services/          # Business logic and DB queries
├── static/            # Static assets (CSS, JS)
├── templates/         # HTML templates
└── commons/           # Shared utilities

API Endpoints

Endpoint	Auth	Description
GET /	No	Login page
POST /	No	Login
GET /signup	No	Signup page
POST /signup	No	Create account
GET /challenges	Yes	Challenges list
GET /challenge/description	Yes	Challenge details
POST /compile	Yes	Execute code
POST /compile-test	Yes	Run test cases
POST /save-submission	Yes	Save solution
GET /submissions	Yes	User submissions
GET /dashboard	Yes	User dashboard
POST /create-checkout-session	Yes	Stripe checkout (premium)

License

MIT