# Use Python 3.11 slim image
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    libjpeg-dev \
    zlib1g-dev \
    libfreetype6-dev \
    liblcms2-dev \
    libopenjp2-7-dev \
    libtiff5-dev \
    && rm -rf /var/lib/apt/lists/*

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

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

# Copy application code
COPY main.py .
COPY gunicorn.conf.py .
COPY app/ ./app/

# Create necessary directories
RUN mkdir -p app/static/qr_codes app/static/logos flask_session data

# Set environment variables
ENV FLASK_APP=main.py
ENV FLASK_ENV=production
ENV PYTHONUNBUFFERED=1

# Create non-root user for security
RUN useradd --create-home --shell /bin/bash app && \
    chown -R app:app /app
USER app

# Expose port
EXPOSE 5000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:5000/health')" || exit 1

# Run the application with Gunicorn for production
CMD ["gunicorn", "-c", "gunicorn.conf.py", "main:app"]