# Use an official Python runtime as a parent image
FROM python:3.11-slim as builder

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

WORKDIR /app

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

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

# Final stage
FROM python:3.11-slim

ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PORT=8000

WORKDIR /app

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

# Copy installed 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 project files
COPY . .

# Expose port
EXPOSE 8000

# Run script for database migrations and running the server
CMD ["sh", "-c", "python manage.py migrate --noinput && python manage.py collectstatic --noinput && gunicorn unievents_project.wsgi:application --bind 0.0.0.0:$PORT"]