FROM python:3.12-slim

# Set working directory
WORKDIR /app

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

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

# Copy the entire application
COPY . .

# Create necessary directories
RUN mkdir -p app/uploads app/data /app/huggingface_cache

# ----------------------------
# Add a non-root user (optional but recommended)
# ----------------------------
RUN useradd -m -u 1000 user
RUN chown -R user:user /app
USER user

# Set environment variables
ENV PYTHONPATH=/app \
    PORT=7860 \
    HF_HOME=/app/huggingface_cache \
    TRANSFORMERS_CACHE=/app/huggingface_cache\
    DATABASE_PATH=/tmp/claridoc_data/sessions.db

# Expose the port that Hugging Face Spaces expects
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Command to run the FastAPI application
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]