# Multi-stage Dockerfile for KGraph-MCP
# Build stage
FROM python:3.11-slim as builder

# Install system dependencies and uv in one layer
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    git \
    && pip install --no-cache-dir uv \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Set working directory
WORKDIR /app

# Copy dependency files
COPY requirements.txt ./

# Install only production dependencies (exclude dev dependencies for production)
RUN uv pip install --system -r requirements.txt \
    && pip cache purge \
    && find /usr/local/lib/python3.11/site-packages -name "*.pyc" -delete \
    && find /usr/local/lib/python3.11/site-packages -name "__pycache__" -type d -exec rm -rf {} + 2>/dev/null || true

# Runtime stage
FROM python:3.11-slim

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN useradd -m -u 1000 appuser

# Set working directory
WORKDIR /app

# Copy Python packages from builder
COPY --from=builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Copy application code
COPY --chown=appuser:appuser . .

# Environment configuration
ARG ENVIRONMENT=production
ENV ENVIRONMENT=${ENVIRONMENT}
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Create necessary directories
RUN mkdir -p /app/logs /app/data && \
    chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Default command
CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]