# QR Code Generator - Dockerfile
# Multi-stage build for optimized container size

FROM python:3.11-slim as builder

# Set working directory
WORKDIR /app

# Install system dependencies for Pillow and cairosvg
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libjpeg-dev \
    zlib1g-dev \
    libcairo2-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements file
COPY requirements.txt .

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


# Final stage
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install runtime dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    libcairo2 \
    libjpeg62-turbo \
    && rm -rf /var/lib/apt/lists/*

# Copy Python dependencies from builder
COPY --from=builder /root/.local /root/.local

# Copy application code
COPY app.py .
COPY utils/ ./utils/

# Create directory for Streamlit config
RUN mkdir -p /root/.streamlit

# Configure Streamlit
RUN echo '\
[server]\n\
headless = true\n\
address = "0.0.0.0"\n\
port = 8501\n\
enableCORS = false\n\
enableXsrfProtection = true\n\
\n\
[browser]\n\
gatherUsageStats = false\n\
' > /root/.streamlit/config.toml

# Update PATH to include local Python packages
ENV PATH=/root/.local/bin:$PATH

# Expose Streamlit port
EXPOSE 8501

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:8501/_stcore/health')"

# Run the application
ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=8501"]