# Dockerfile for Hugging Face Spaces
# Uses Python 3.9 with minimal dependencies

FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

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

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

# Copy application files
COPY app.py .
COPY templates/ ./templates/
COPY data/ ./data/

# Create necessary directories
RUN mkdir -p static vector_store

# Set environment variables for Hugging Face
ENV HF_SPACE=True
ENV PORT=7860
ENV PYTHONUNBUFFERED=1
ENV PYTHONPATH=/app

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/api/health')"

# Run the application
CMD ["python", "app.py"]