# Build stage for React frontend
FROM node:18-alpine AS frontend-build
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# Production stage for Python backend
FROM python:3.11-slim
WORKDIR /app

# Install system dependencies for database clients
RUN apt-get update && apt-get install -y \
    default-mysql-client \
    postgresql-client \
    && rm -rf /var/lib/apt/lists/*

# Copy built frontend
COPY --from=frontend-build /app/dist ./dist

# Copy backend
COPY backend/ ./backend/

# Install Python dependencies
RUN pip install --no-cache-dir -r backend/requirements.txt gunicorn

# Environment variables
ENV FLASK_APP=backend/app.py
ENV PORT=8000

# Expose port
EXPOSE 8000

# Run with gunicorn
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "backend.app:app"]