# Stage 1: Build the React frontend
FROM node:18-alpine AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ .
RUN npm run build

# Stage 2: Install backend dependencies
FROM python:3.11-slim AS backend-builder
WORKDIR /app
COPY backend/requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Stage 3: Final application image
FROM python:3.11-slim

WORKDIR /app

# Copy installed Python packages from the backend-builder stage
COPY --from=backend-builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages

# Copy backend application code and start script
COPY backend/app /app/app
COPY backend/start.sh /app/start.sh
RUN chmod +x /app/start.sh

# Copy the built React app from the frontend-builder stage
COPY --from=frontend-builder /app/frontend/build /app/static

# Expose the port the app runs on
EXPOSE 8000

# Run the application using the start script
CMD ["sh", "start.sh"]