FROM python:3.9-slim

WORKDIR /app

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

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

# Copy the rest of the application
COPY . .

# Create necessary directories with proper permissions
RUN mkdir -p /app/data /app/temp /tmp/huggingface-cache && \
    chmod -R 777 /app/data /app/temp /tmp/huggingface-cache && \
    chown -R 1000:1000 /app/data /app/temp /tmp/huggingface-cache

# Set environment variables for cache locations
ENV TRANSFORMERS_CACHE=/tmp/huggingface-cache
ENV HF_HOME=/tmp/huggingface-cache
ENV SENTENCE_TRANSFORMERS_HOME=/tmp/huggingface-cache

# Expose the port that the app will run on
EXPOSE 7860

# Set environment variables for Hugging Face Spaces
ENV PYTHONUNBUFFERED=1
ENV HOST=0.0.0.0
ENV PORT=7860

# Switch to non-root user for better security
RUN useradd -m -u 1000 appuser
USER appuser

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