# Dockerfile for Hugging Face Spaces - Streamlit App
FROM python:3.9-slim

# Create user for security
RUN useradd -m -u 1000 user
USER user

# Set environment variables
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONPATH=$HOME/app \
    PYTHONUNBUFFERED=1

# Set working directory
WORKDIR $HOME/app

# Copy requirements first for better Docker layer caching
COPY --chown=user:user requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir --user -r requirements.txt

# Copy the application files
COPY --chown=user:user . .

# Create necessary directories
RUN mkdir -p $HOME/.streamlit

# Create Streamlit config
RUN echo "\
[general]\n\
email = \"\"\n\
" > $HOME/.streamlit/credentials.toml

RUN echo "\
[server]\n\
headless = true\n\
enableCORS = false\n\
enableXsrfProtection = false\n\
port = 7860\n\
" > $HOME/.streamlit/config.toml

# Expose the port that Hugging Face Spaces expects
EXPOSE 7860

# Health check
HEALTHCHECK CMD curl --fail http://localhost:7860/_stcore/health

# Command to run the Streamlit app
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]