FROM python:3.9-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    curl \
    procps \
    pkg-config \
    && rm -rf /var/lib/apt/lists/*

# Create streamlit config directory
RUN mkdir -p /app/.streamlit

# Create Streamlit config file
RUN echo "\
[server]\n\
headless = true\n\
port = 8501\n\
address = \"0.0.0.0\"\n\
enableCORS = false\n\
enableXsrfProtection = false\n\
\n\
[global]\n\
disableWatchdogWarning = true\n\
suppressDeprecationWarnings = true\n\
\n\
[browser]\n\
gatherUsageStats = false\n\
" > /app/.streamlit/config.toml

# Set environment variables
ENV STREAMLIT_CONFIG_DIR=/app/.streamlit
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_SERVER_PORT=8501
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0
ENV STREAMLIT_GLOBAL_DISABLE_WATCHDOG_WARNING=true
ENV STREAMLIT_BROWSER_GATHER_USAGE_STATS=false
ENV PYTHONUNBUFFERED=1

# 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 api.py ./
COPY main.py ./
COPY start.py ./

# Create a non-root user for security
RUN useradd -m -u 1000 appuser && \
    chown -R appuser:appuser /app

USER appuser

# Expose ports
EXPOSE 8501 7861

# Add healthcheck for Streamlit
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
  CMD curl -f http://localhost:8501/_stcore/health || exit 1

# Use start.py as entrypoint
CMD ["python3", "start.py"]