# Use a slimmer official Python image
FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Install system dependencies for PyPDF2, python-pptx, etc.
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    python3-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements file
COPY requirements.txt .

# Add flask-cors to requirements if not already there
RUN grep -q "flask-cors" requirements.txt || echo "flask-cors" >> requirements.txt

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

# Create a non-root user to run the application
RUN useradd -m appuser
RUN mkdir -p /app/uploads /app/temp && chown -R appuser:appuser /app

# Copy the entire application
COPY --chown=appuser:appuser . .

# Switch to the non-root user
USER appuser

# Expose the application port
EXPOSE 7860

# Run Gunicorn with logging
CMD ["gunicorn", "-w", "2", "-b", "0.0.0.0:7860", "--log-level", "info", "--timeout", "120", "app:app"]