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Backend Setup Documentation

Current Status: ✅ COMPLETE

Date: August 7, 2025
Environment: Development
Architecture: Node.js + tRPC + PostgreSQL + Redis + Docker

Services Successfully Running

1. PostgreSQL Database

  • Port: 5433 (external), 5432 (internal)
  • Container: formular-postgres
  • Status: ✅ Healthy
  • Connection: postgresql://formbuilder:devpassword@localhost:5433/formbuilder
  • Features: Prisma ORM, comprehensive schema with users, forms, submissions, LLM analysis

2. Redis Cache & Job Queue

  • Port: 6380 (external), 6379 (internal)
  • Container: formular-redis
  • Status: ✅ Healthy
  • Connection: redis://localhost:6380
  • Features: Caching, background job processing with Bull

3. Backend API Service

  • Port: 5001
  • Technology: Node.js + Express + tRPC
  • Status: ✅ Running
  • Endpoints:
    • Health: http://localhost:5001/
    • tRPC API: http://localhost:5001/api/trpc
    • REST API: http://localhost:5001/api/v1

Key Backend Features

Database Schema (Prisma)

  • Users & Organizations: Multi-tenant support
  • Forms: Dynamic schema, versioning, sharing controls
  • Submissions: Data collection with metadata
  • LLM Analysis: AI-powered form analysis
  • Background Jobs: Async processing
  • NextAuth Integration: Ready for authentication

API Architecture

  • Primary: tRPC for type-safe API calls
  • Secondary: REST API for backward compatibility
  • WebSocket: Real-time features ready
  • Authentication: JWT + NextAuth.js ready

Background Processing

  • Queue System: Bull + Redis
  • Job Types: LLM analysis, email notifications, data export
  • Processors: Automatic job processing

Successful Tests

Database Connectivity ✅

# PostgreSQL Test
docker exec formular-postgres psql -U formbuilder -d formbuilder -c "SELECT current_user;"
# Result: formbuilder user connected

# Redis Test  
docker exec formular-redis redis-cli ping
# Result: PONG

API Endpoints ✅

# Health Check
curl http://localhost:5001/
# Result: {"message":"Formular Backend API","version":"2.0.0","status":"running"}

# tRPC Endpoint
curl http://localhost:5001/api/trpc
# Result: tRPC server responding correctly

Quick Start Commands

Start Environment

# 1. Start database services
docker-compose up -d postgres redis

# 2. Start backend API
cd backend
DATABASE_URL="postgresql://formbuilder:devpassword@localhost:5433/formbuilder" node index.js

Check Status

# Check Docker services
docker-compose ps

# Test API
curl http://localhost:5001/

Architecture Benefits

For CEO Learning:

  1. Microservices: Each service runs independently
  2. Type Safety: tRPC provides end-to-end TypeScript
  3. Scalability: Redis for caching, background jobs
  4. Database: PostgreSQL with complex relationships
  5. Real-time: WebSocket support for live features

Production Ready:

  • Health checks on all services
  • Database migrations with Prisma
  • Job queue for async processing
  • Multi-tenant architecture
  • Security middleware ready

Next Steps Available:

  1. Connect Frontend: Integrate tRPC with Next.js frontend
  2. Authentication: Set up NextAuth.js with providers
  3. Form Submission: Connect form builder to backend
  4. LLM Integration: Activate AI analysis features
  5. Real-time Features: Enable WebSocket functionality

✅ AUTHENTICATION SYSTEM FULLY TESTED & WORKING

Authentication Test Results (All Passed):

  • User Registration: ✅ Creates users with encrypted passwords
  • User Login: ✅ Validates credentials and generates JWT tokens
  • Protected Routes: ✅ Validates JWT tokens for secure endpoints
  • Token Verification: ✅ Endpoint validates token authenticity
  • Security: ✅ Rejects invalid tokens and credentials
  • Database Integration: ✅ Prisma ORM working with PostgreSQL

Authentication Endpoints Tested:

POST /api/v1/auth/register - User registration ✅
POST /api/v1/auth/login    - User authentication ✅  
GET  /api/v1/auth/profile  - Protected user profile ✅
GET  /api/v1/auth/verify   - Token validation ✅
GET  /api/v1/forms         - Protected forms endpoint ✅

Backend Security Features:

  • Password Hashing: Bcrypt with 12 salt rounds
  • JWT Tokens: 24-hour expiration, stateless auth
  • Auth Middleware: Protects sensitive endpoints
  • Input Validation: Prevents malformed requests
  • Error Handling: Proper HTTP status codes

Test Evidence:

✅ Registration: 201 Created with JWT token
✅ Login: 200 OK with user data and token
✅ Profile Access: 200 OK with authenticated user data  
✅ Invalid Token: 401 Unauthorized (correctly rejected)
✅ Invalid Credentials: 401 Unauthorized (correctly rejected)

Status: Backend services are fully operational with COMPLETE AUTHENTICATION SYSTEM ready for frontend integration.