# Multi-stage build for optimized Docker image
FROM python:3.11-slim AS builder

WORKDIR /app

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

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

# Install Python dependencies in a virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
RUN pip install --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy package files and install
COPY pyproject.toml README.md ./
COPY src ./src
RUN pip install --no-cache-dir .

# Final stage
FROM python:3.11-slim

WORKDIR /app

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

# Copy virtual environment from builder (includes installed package)
COPY --from=builder /opt/venv /opt/venv

# Set environment variables
ENV PATH="/opt/venv/bin:$PATH" \
    PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:3000/api/health || exit 1

# Expose port for web dashboard
EXPOSE 3000

# Default command - csm is now a proper entry point from pip install
CMD ["csm", "serve", "--host", "0.0.0.0", "--port", "3000"]
