FROM python:3.11-slim

# Install system dependencies for compilation
RUN apt-get update && apt-get install -y \
    build-essential \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy requirements first for Docker layer caching
COPY requirements.txt .

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

# Copy application files
COPY api.py .
COPY pacebeats_model.py .

# Set environment variables
ENV PORT=7860
ENV PYTHONUNBUFFERED=1

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:7860/health', timeout=5)"

# Run the application
CMD ["uvicorn", "api:app", "--host", "0.0.0.0", "--port", "7860"]