# ============================
# Stage 1: Build dependencies
# ============================
FROM python:3.13-slim AS builder

# Optimize Python
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Install build tools (if needed for wheels)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Create app working directory
WORKDIR /app

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

# ============================
# Stage 2: Production image
# ============================
FROM python:3.13-slim

# Optimize Python
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Create non-root user
RUN useradd -m -r appuser

# Create working directory
WORKDIR /app

# Copy installed dependencies from builder
COPY --from=builder /usr/local/lib/python3.13/site-packages/ /usr/local/lib/python3.13/site-packages/
COPY --from=builder /usr/local/bin/ /usr/local/bin/

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

# Collect static files
RUN python manage.py collectstatic --noinput

# Switch to non-root user
USER appuser

# Expose Django port
EXPOSE 7090

# Run Django with uvicorn
CMD ["uvicorn", "MPM.asgi:application", "--host", "0.0.0.0", "--port", "7090"]