Create complete travel assistant with FastAPI backend, Next.js frontend, and Docker Compose setup

.gitignore

@@ -0,0 +1,35 @@
+# Docker
+.docker/
+docker-compose.override.yml
+
+# Environment files
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Database data
+postgres_data/
+postgres_data_dev/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Temporary files
+tmp/
+temp/

README.md

@@ -1,2 +1,167 @@
 # TravelAssistant
-AI travel assistant
+
+AI-powered travel assistant with FastAPI backend and Next.js frontend.
+
+## Architecture
+
+This project consists of three main components:
+
+- **Backend**: FastAPI application with PostgreSQL database
+- **Frontend**: Next.js application with TypeScript
+- **Database**: PostgreSQL with sample travel data
+
+## Quick Start with Docker Compose
+
+### Prerequisites
+
+- Docker and Docker Compose installed
+- Git
+
+### Development Setup
+
+1. Clone the repository:
+```bash
+git clone <repository-url>
+cd TravelAssistant
+```
+
+2. Start all services in development mode:
+```bash
+docker-compose -f docker-compose.dev.yml up --build
+```
+
+3. Access the application:
+- Frontend: http://localhost:3000
+- Backend API: http://localhost:8000
+- API Documentation: http://localhost:8000/docs
+- Database: localhost:5432
+
+### Production Setup
+
+1. Start all services in production mode:
+```bash
+docker-compose up --build -d
+```
+
+2. The application will be available at:
+- Frontend: http://localhost:3000
+- Backend: http://localhost:8000
+
+## Development
+
+### Backend (FastAPI)
+
+The backend is located in the `backend/` directory and includes:
+
+- FastAPI application with CORS support
+- PostgreSQL database integration with SQLAlchemy
+- Travel recommendations API endpoints
+- Environment-based configuration
+
+#### API Endpoints
+
+- `GET /` - Root endpoint
+- `GET /health` - Health check
+- `GET /recommendations` - Get all travel recommendations
+- `GET /recommendations/{destination}` - Get recommendation by destination
+- `POST /search` - Search destinations based on criteria
+
+#### Local Development
+
+```bash
+cd backend
+pip install -r requirements.txt
+uvicorn main:app --reload
+```
+
+### Frontend (Next.js)
+
+The frontend is located in the `frontend/` directory and includes:
+
+- Next.js 14 with App Router
+- TypeScript configuration
+- Styled Components for styling
+- API integration with the backend
+- Responsive design
+
+#### Local Development
+
+```bash
+cd frontend
+npm install
+npm run dev
+```
+
+## Database
+
+PostgreSQL database with pre-populated sample data:
+
+- Destinations table with travel information
+- Travel plans table for user itineraries
+- Sample destinations: Paris, Tokyo, New York, Barcelona
+
+## Environment Variables
+
+### Backend (.env)
+```
+DATABASE_URL=postgresql://travel_user:travel_pass@db:5432/travel_assistant
+API_HOST=0.0.0.0
+API_PORT=8000
+DEBUG=true
+SECRET_KEY=your-secret-key-here
+```
+
+### Frontend (.env.local)
+```
+NEXT_PUBLIC_API_URL=http://localhost:8000
+NODE_ENV=development
+```
+
+## Docker Services
+
+- **db**: PostgreSQL 15 database
+- **backend**: FastAPI application with uvicorn
+- **frontend**: Next.js application
+
+## Features
+
+- 🌍 Travel destination search and recommendations
+- 💰 Budget-based filtering
+- 📅 Date-based planning
+- 🎯 Personalized preferences
+- 📱 Responsive web interface
+- 🐳 Full Docker containerization
+- 🔄 Hot reload in development mode
+
+## API Documentation
+
+When the backend is running, visit http://localhost:8000/docs for interactive API documentation powered by FastAPI's automatic OpenAPI generation.
+
+## Contributing
+
+1. Fork the repository
+2. Create a feature branch
+3. Make your changes
+4. Test with Docker Compose
+5. Submit a pull request
+
+## Troubleshooting
+
+### Common Issues
+
+1. **Port conflicts**: Ensure ports 3000, 8000, and 5432 are available
+2. **Docker build issues**: Try `docker-compose down -v` and rebuild
+3. **Database connection issues**: Wait for the database health check to pass
+
+### Logs
+
+View logs for specific services:
+```bash
+docker-compose logs backend
+docker-compose logs frontend
+docker-compose logs db
+```
+
+## License
+
+MIT License

backend/.dockerignore

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+# Docker
+*.dockerfile
+.dockerignore
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+
+# Dependency directories
+jspm_packages/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Temporary files
+tmp/
+temp/

backend/.env.example

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+# Environment variables for local development
+DATABASE_URL=postgresql://travel_user:travel_pass@localhost:5432/travel_assistant
+API_HOST=0.0.0.0
+API_PORT=8000
+DEBUG=true
+SECRET_KEY=your-secret-key-here-change-in-production

backend/.gitignore

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+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# FastAPI
+.env
+.env.*
+!.env.example
+
+# Database
+*.db
+*.sqlite3
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log

backend/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+RUN pip install --no-cache-dir --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create non-root user
+RUN useradd --create-home --shell /bin/bash app \
+    && chown -R app:app /app
+USER app
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD python -c "import requests; requests.get('http://localhost:8000/health')"
+
+# Run with uvicorn
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]

backend/database.py

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+from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, Text, JSON
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+from datetime import datetime
+import os
+
+DATABASE_URL = os.getenv("DATABASE_URL", "postgresql://travel_user:travel_pass@db:5432/travel_assistant")
+
+engine = create_engine(DATABASE_URL)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+class Destination(Base):
+    __tablename__ = "destinations"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, index=True)
+    country = Column(String)
+    description = Column(Text)
+    estimated_cost = Column(Float)
+    recommended_duration = Column(String)
+    highlights = Column(JSON)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+class TravelPlan(Base):
+    __tablename__ = "travel_plans"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(String)  # In production, this would be a foreign key
+    destination_id = Column(Integer)  # Foreign key to destinations
+    start_date = Column(DateTime)
+    end_date = Column(DateTime)
+    budget = Column(Float)
+    preferences = Column(JSON)
+    status = Column(String, default="draft")
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+# Create tables
+def create_tables():
+    Base.metadata.create_all(bind=engine)