# Multi-stage Dockerfile for static frontend deployment
# Stage 1: Build the diagrams
FROM python:3.11-slim AS builder

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

# Set working directory
WORKDIR /app

# Copy requirements and install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy source files
COPY *.py .

# Generate diagrams (outputs will be in /app)
RUN python lan_architecture.py && \
    python main.py

# Verify generated files exist
RUN ls -la *.png || echo "Warning: No PNG files generated"

# Stage 2: Serve with Nginx
FROM nginx:alpine

# Remove default nginx static assets
RUN rm -rf /usr/share/nginx/html/*

# Copy generated diagram files from builder stage
COPY --from=builder /app/*.png /usr/share/nginx/html/

# Copy any HTML/CSS files for the frontend
COPY public/ /usr/share/nginx/html/

# Create a simple nginx config for serving static files
RUN echo 'server { \
    listen 80; \
    server_name _; \
    root /usr/share/nginx/html; \
    index index.html; \
    location / { \
        try_files $uri $uri/ /index.html; \
    } \
    # Enable CORS if needed \
    add_header Access-Control-Allow-Origin *; \
}' > /etc/nginx/conf.d/default.conf

# Expose port 80
EXPOSE 80

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --quiet --tries=1 --spider http://localhost/ || exit 1

# Start nginx
CMD ["nginx", "-g", "daemon off;"]