# Use Python 3.10 slim image
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

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

# Copy application code
COPY symptom_checker.py .
COPY api_server.py .

# Copy model artifacts
COPY symptom_model.json .
COPY symptom_model.labels.npy .
COPY symptom_model.features.txt .

# Expose port (Hugging Face Spaces uses port 7860)
EXPOSE 7860

# Create a non-root user for security
RUN useradd -m -u 1000 appuser
USER appuser

# Run the FastAPI server
CMD ["uvicorn", "api_server:app", "--host", "0.0.0.0", "--port", "7860"]