# Multi-stage build for React frontend and FastAPI backend
# Stage 1: Build the frontend
FROM node:20-slim AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# Stage 2: Build the final image
FROM python:3.11-slim
WORKDIR /app

# Install system dependencies for OCR and PDF processing
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglx-mesa0 \
    libglib2.0-0 \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Copy backend requirements and install
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend code
COPY backend/ /app/

# Copy built frontend assets to static folder in backend
COPY --from=frontend-builder /app/frontend/dist /app/static

# Set environment variables for production
ENV PYTHONUNBUFFERED=1
ENV PORT=7860

# Expose the port HF Spaces expects
EXPOSE 7860

# Start the application on 0.0.0.0 for container access
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]