# Multi-stage build for Maze Generator

# Stage 1: Builder
FROM python:3.11-slim as builder

WORKDIR /app

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

# Copy requirements
COPY requirements.txt .

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

# Stage 2: Runtime
FROM python:3.11-slim

WORKDIR /app

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

# Make sure scripts in .local are usable
ENV PATH=/root/.local/bin:$PATH

# Copy application code
COPY src/ ./src/
COPY api/ ./api/
COPY web/ ./web/
COPY generate_images.py ./

# Create directories for data
RUN mkdir -p saved_mazes output_images

RUN python generate_images.py

# Expose port
EXPOSE 5000

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

# Run the application
CMD ["python", "api/app.py"]