FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for layer caching
COPY mcp_server/requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY mcp_server/ /app/mcp_server/
COPY kg/ /app/kg/
COPY docs/ /app/docs/

# Set environment variables
ENV PORT=7860
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Expose port 7860 (Hugging Face Spaces standard)
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Run the server
CMD ["python", "-m", "uvicorn", "mcp_server.server:app", "--host", "0.0.0.0", "--port", "7860"]