🔐 Auth Template

A full-stack authentication template with Go backend (Fiber) and Next.js 15 frontend (NextAuth v5).

✨ Features

• Google OAuth Integration - Seamless sign-in with Google
• JWT Authentication - Secure session management with refresh tokens
• User Management - CRUD operations and user directory
• CORS Protection - Environment-aware configuration
• PostgreSQL Database - Robust data persistence with GORM

🚀 Quick Start

Backend Setup

cd backend
go mod download
# Set up .env with DATABASE_URL, JWT_SECRET, INTERNAL_SYNC_TOKEN
go run main.go

Frontend Setup

cd frontend
npm install
# Set up .env.local with Google OAuth credentials
npm run dev

🏗️ Architecture

• Backend: Go + Fiber + PostgreSQL + GORM
• Frontend: Next.js 15 + NextAuth v5 + TypeScript + Tailwind CSS
• Authentication: JWT + HTTP-only cookies + Google OAuth

📡 API Endpoints

• POST /auth/internal/sso-sync - SSO synchronization
• GET /users/bulk - Get all users (authenticated)
• GET /users/:id - Get specific user (authenticated)

🔐 Security Features

• JWT validation and revocation
• Environment-specific CORS
• Secure headers

📝 Environment Variables

Backend

DATABASE_URL=postgresql://user:pass@localhost:5432/db
JWT_SECRET=your-secret
INTERNAL_SYNC_TOKEN=your-token
ENV=development

Frontend

GOOGLE_CLIENT_ID=your-client-id
GOOGLE_CLIENT_SECRET=your-secret
NEXTAUTH_SECRET=your-secret
API_BASE=http://localhost:8080

🚀 Deployment

• Set ENV=production
• Configure FRONTEND_PROD_URL
• Environment-specific database configs

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Built with Go, Fiber, Next.js, and NextAuth