Devlabs Frontend

Next.js frontend application for the Devlabs project management and evaluation system. Provides an intuitive interface for administrators, faculty, and students to collaborate on project-based learning.

Tech Stack

Framework: Next.js 16 with App Router
Language: TypeScript
UI Library: React 19
Styling: Tailwind CSS
Components: shadcn/ui + Radix UI
State Management: React Query (TanStack Query)
Authentication: NextAuth.js
HTTP Client: Axios
Package Manager: pnpm

Prerequisites

Node.js 18 or higher
pnpm (recommended)
Docker & Docker Compose (for containerized setup)

Quick Start with Docker

1. Clone the repository

git clone https://github.com/TharunCodes07/devlabs-frontend.git
cd devlabs-frontend

2. Configure environment

Copy the example environment file and update with your values:

cp .env.example .env

Edit .env and update with your backend URL and Keycloak settings.

3. Run with Docker Compose

docker-compose up -d

The application will be available at http://localhost:3000

4. Stop services

docker-compose down

Local Development Setup

1. Clone and install

git clone https://github.com/TharunCodes07/devlabs-frontend.git
cd devlabs-frontend
pnpm install

2. Configure environment

Copy .env.example to .env and configure:

NODE_ENV=development
AUTH_SECRET=your_auth_secret_key
NEXT_REDIRECT=http://localhost:3000
LOG_LEVEL=info
AUTH_KEYCLOAK_ID=devlabs-client
AUTH_KEYCLOAK_SECRET=client_secret_123
AUTH_KEYCLOAK_ISSUER=http://localhost:8060/realms/devlabs
BACKEND_API_URL=http://localhost:8090
NEXT_PUBLIC_API_URL=http://localhost:8090
FRONTEND_PORT=3000

3. Run the development server

pnpm dev

Open http://localhost:3000 in your browser.

Available Scripts

Command	Description
`pnpm dev`	Start development server
`pnpm build`	Build for production
`pnpm start`	Start production server
`pnpm lint`	Run ESLint
`pnpm lint:fix`	Fix ESLint issues
`pnpm format`	Format with Prettier
`pnpm format:check`	Check formatting

Environment Variables

Key environment variables (see .env.example for complete list):

Variable	Description	Default
`NODE_ENV`	Environment mode	`development`
`AUTH_SECRET`	NextAuth secret key	-
`NEXT_REDIRECT`	Redirect URL after auth	`http://localhost:3000`
`LOG_LEVEL`	Logging level (trace/debug/info/warn/error)	`info`
`AUTH_KEYCLOAK_ID`	Keycloak client ID	-
`AUTH_KEYCLOAK_SECRET`	Keycloak client secret	-
`AUTH_KEYCLOAK_ISSUER`	Keycloak issuer URL	-
`BACKEND_API_URL`	Backend API URL (server-side)	`http://localhost:8090`
`NEXT_PUBLIC_API_URL`	Backend API URL (client-side)	`http://localhost:8090`
`FRONTEND_PORT`	Port to run on	`3000`

Features

Academic Management

Course and semester organization
Student and faculty management
Batch assignment and tracking

Project & Team Management

Project lifecycle management
Team formation and collaboration
File upload and document management
Status tracking (Proposed, Ongoing, Completed, Rejected)

Evaluation & Assessment

Course evaluations with custom criteria
Peer and instructor assessments
Multi-stage review process
Individual scoring with rubrics

Analytics & Reporting

Performance dashboards
Progress tracking
Data export capabilities
Interactive charts and visualizations

User Experience

Responsive design for all devices
Dark/Light mode
Drag & drop interactions
Real-time updates

Production Deployment

Single Instance (Simple Setup)

For single instance deployment without load balancing:

1. Update environment

Set production values in .env:

NODE_ENV=production
AUTH_SECRET=strong_random_secret_min_32_chars
NEXT_REDIRECT=https://your-domain.com
AUTH_KEYCLOAK_ISSUER=https://your-keycloak-domain.com/realms/devlabs
BACKEND_API_URL=https://your-backend-api.com
NEXT_PUBLIC_API_URL=https://your-backend-api.com

2. Deploy with Docker Compose

docker-compose up -d

3. Check logs

docker-compose logs -f frontend

Multi-Instance with Load Balancing (High Availability)

For production environments requiring high availability and load balancing across multiple frontend instances:

graph TB
    Client[Client Requests]
    Nginx[Nginx Load Balancer<br/>Port: 7000]

    subgraph Frontend Instances
        F1[Frontend Instance 1<br/>Internal: 3000]
        F2[Frontend Instance 2<br/>Internal: 3000]
        F3[Frontend Instance 3<br/>Internal: 3000]
    end

    Backend[Backend API<br/>Port: 8090]
    KC[Keycloak<br/>Auth Server]

    Client --> Nginx
    Nginx -->|Round Robin| F1
    Nginx -->|Round Robin| F2
    Nginx -->|Round Robin| F3

    F1 --> Backend
    F2 --> Backend
    F3 --> Backend

    F1 --> KC
    F2 --> KC
    F3 --> KC

Architecture Overview

Nginx Reverse Proxy: Distributes incoming requests across 3 frontend instances using round-robin algorithm
Load Balancing: Automatic failover if an instance becomes unhealthy (max 3 fails, 30s timeout)
Session Handling: NextAuth handles sessions via JWT tokens, no sticky sessions needed
Health Checks: Nginx monitors root endpoint for each frontend instance
Static Asset Caching: Nginx caches _next/static assets for better performance
Scalability: Add or remove instances by modifying docker-compose.prod.yml

1. Configure Nginx

The nginx.conf file is already configured for load balancing. You can adjust the number of instances by modifying the upstream block:

upstream frontend_servers {
    server frontend-1:3000 max_fails=3 fail_timeout=30s;
    server frontend-2:3000 max_fails=3 fail_timeout=30s;
    server frontend-3:3000 max_fails=3 fail_timeout=30s;
}

2. Deploy with production compose file

docker-compose -f docker-compose.prod.yml up -d

This will start:

3 frontend instances (frontend-1, frontend-2, frontend-3)
1 Nginx load balancer (exposed on port 7000)

3. Scale instances dynamically

To add more instances, edit docker-compose.prod.yml and add frontend-4, frontend-5, etc., then update nginx.conf and restart:

docker-compose -f docker-compose.prod.yml up -d

4. Monitor health

Check which frontend instance is serving requests:

curl -I http://localhost:7000

Look for the X-Upstream-Server header to see which instance responded.

5. View logs

All instances:

docker-compose -f docker-compose.prod.yml logs -f

Specific instance:

docker-compose -f docker-compose.prod.yml logs -f frontend-1

Nginx logs:

docker-compose -f docker-compose.prod.yml logs -f nginx

Benefits

High Availability: If one instance fails, Nginx automatically routes to healthy instances
Load Distribution: Requests distributed evenly using round-robin
Better Performance: Static assets cached by Nginx
Zero Downtime Deployments: Rolling updates possible by restarting instances one at a time
Horizontal Scaling: Easy to add more instances as traffic grows
WebSocket Support: Properly configured for Next.js live reload and real-time features

Project Structure

devlabs-frontend/
├── src/
│   ├── app/                    # Next.js app router pages
│   │   ├── (auth)/            # Authentication pages
│   │   ├── (devlabs)/         # Main app pages
│   │   └── api/               # API routes
│   ├── components/            # React components
│   │   ├── admin/
│   │   ├── dashboard/
│   │   ├── evaluations/
│   │   ├── projects/
│   │   ├── teams/
│   │   └── ui/                # shadcn/ui components
│   ├── hooks/                 # Custom React hooks
│   ├── lib/                   # Utilities and configs
│   │   ├── axios/             # API client
│   │   ├── auth.ts            # Auth config
│   │   ├── logger.ts          # Pino logger
│   │   └── utils.ts           # Helper functions
│   ├── repo/                  # API query functions
│   └── types/                 # TypeScript types
├── public/                    # Static assets
├── docker-compose.yml
├── Dockerfile
├── next.config.ts
├── tailwind.config.ts
└── package.json

Logging

The application uses Pino for structured logging. Control log verbosity with LOG_LEVEL:

trace - Most verbose
debug - Debug information
info - General information (default)
warn - Warnings
error - Errors only
fatal - Critical errors

Usage:

import { logger } from "@/lib/logger";

logger.info("User logged in", { userId: "123" });
logger.error("API call failed", { error, endpoint: "/api/users" });

Troubleshooting

Application won't start

Check logs:

docker-compose logs frontend

Authentication issues

Verify Keycloak configuration in .env:

Correct realm name
Valid client ID and secret
Accessible issuer URL

Backend connection issues

Ensure:

Backend is running and accessible
CORS is configured on backend
BACKEND_API_URL and NEXT_PUBLIC_API_URL are correct

🌟 Key Features Breakdown

Course Management

Create and manage academic courses
Assign instructors and students
Organize courses within semesters
Track course-specific performance metrics

Project Lifecycle

Project proposal and approval workflow
Team assignment and collaboration tools
File upload and version management
Multi-stage review and evaluation process

Evaluation System

Customizable evaluation criteria
Peer and instructor assessments
Real-time scoring and feedback
Comprehensive rubric management

Analytics Dashboard

Performance tracking across courses and projects
Visual representations of progress and achievements
Export capabilities for detailed reporting
Trend analysis and insights

Contributing

We welcome contributions! Whether it's fixing a bug, improving documentation, or suggesting new features.

How to Contribute

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Commit your changes (git commit -m 'Add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Development Guidelines

Follow TypeScript best practices
Use existing components from shadcn/ui
Write meaningful commit messages
Test your changes thoroughly
Update documentation as needed

License

This project is part of the Devlabs ecosystem.

Built with ❤️ by the Devlabs team.

Name		Name	Last commit message	Last commit date
Latest commit History 109 Commits
.husky		.husky
src		src
.gitignore		.gitignore
.lintstagedrc		.lintstagedrc
.prettierignore		.prettierignore
.prettierrc		.prettierrc
Dockerfile		Dockerfile
README.md		README.md
components.json		components.json
docker-compose.yml		docker-compose.yml
ecosystem.config.js		ecosystem.config.js
eslint.config.mjs		eslint.config.mjs
next.config.ts		next.config.ts
nginx.conf		nginx.conf
package.json		package.json
pnpm-lock.yaml		pnpm-lock.yaml
postcss.config.mjs		postcss.config.mjs
tsconfig.json		tsconfig.json

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Devlabs Frontend

Tech Stack

Prerequisites

Quick Start with Docker

1. Clone the repository

2. Configure environment

3. Run with Docker Compose

4. Stop services

Local Development Setup

1. Clone and install

2. Configure environment

3. Run the development server

Available Scripts

Environment Variables

Features

Academic Management

Project & Team Management

Evaluation & Assessment

Analytics & Reporting

User Experience

Production Deployment

Single Instance (Simple Setup)

1. Update environment

2. Deploy with Docker Compose

3. Check logs

Multi-Instance with Load Balancing (High Availability)

Architecture Overview

1. Configure Nginx

2. Deploy with production compose file

3. Scale instances dynamically

4. Monitor health

5. View logs

Benefits

Project Structure

Logging

Troubleshooting

Application won't start

Authentication issues

Backend connection issues

🌟 Key Features Breakdown

Course Management

Project Lifecycle

Evaluation System

Analytics Dashboard

Contributing

How to Contribute

Development Guidelines

License

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