# Stage 1: Build React Frontend UI
FROM node:20-alpine AS frontend-builder
WORKDIR /app/frontend

COPY frontend/package*.json ./
RUN npm ci

COPY frontend/ ./
RUN npm run build

# Stage 2: Python Backend Runtime
FROM python:3.11-slim
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PORT=8000
ENV HOST=0.0.0.0

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend application code
COPY backend/ ./backend/

# Copy compiled static frontend into backend/app/static
COPY --from=frontend-builder /app/frontend/dist ./backend/app/static

EXPOSE 8000

CMD ["python", "backend/main.py"]