FROM python:3.13-slim

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860

# System dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    clang \
    llvm-dev \
    build-essential \
    curl \
    git \
    pkg-config \
    wget \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user for HuggingFace Spaces
RUN useradd -m -u 1000 user
WORKDIR /app

# Copy requirements first for better caching
COPY requirements.txt /app/requirements.txt

# Install Python dependencies
RUN pip install --no-cache-dir -r /app/requirements.txt && \
    pip install --no-cache-dir libclang

# Copy application code (excluding large data files)
COPY --chown=user:user . /app

# Set ownership
RUN chown -R user:user /app

# Switch to non-root user
USER user

# Expose the Gradio port
EXPOSE 7860

# Default command - can be overridden to use --hf-dataset instead of --graph-file
# To use HuggingFace dataset: --hf-dataset "username/dataset-name"
# To use local file: --graph-file "/app/data/multihop_knowledge_graph_with_embeddings.json"
CMD ["python", "-u", "gradio_mcp_space.py"]