# define an alias for the specific python version used in this file.
FROM docker.io/python:3.12.9-slim-bookworm AS python

# Python build stage
FROM python AS python-build-stage

ARG BUILD_ENVIRONMENT=production

# Install apt packages
RUN apt-get update && apt-get install --no-install-recommends -y \
  build-essential \
  libpq-dev \
  wait-for-it \
  && rm -rf /var/lib/apt/lists/*

# Requirements are installed here to ensure they will be cached.
COPY ./requirements .

# Create Python Dependency and Sub-Dependency Wheels.
RUN pip wheel --wheel-dir /usr/src/app/wheels \
  -r ${BUILD_ENVIRONMENT}.txt

# Python 'run' stage
FROM python AS python-run-stage

ARG BUILD_ENVIRONMENT=production
ARG APP_HOME=/app

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    BUILD_ENV=${BUILD_ENVIRONMENT} \
    PATH="/home/django/.local/bin:${PATH}"

WORKDIR ${APP_HOME}

# Create system user
RUN addgroup --system django && \
    adduser --system --ingroup django django

# Install required system dependencies
RUN apt-get update && apt-get install --no-install-recommends -y \
  libpq-dev \
  gettext \
  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
  && rm -rf /var/lib/apt/lists/*

# Copy python dependency wheels
COPY --from=python-build-stage /usr/src/app/wheels /wheels/

# Install python dependencies
RUN pip install --no-cache-dir --no-index --find-links=/wheels/ /wheels/* \
  && rm -rf /wheels/

# Copy entrypoint and start scripts
COPY --chown=django:django ./compose/production/django/entrypoint /entrypoint
RUN sed -i 's/\r$//g' /entrypoint && \
    chmod +x /entrypoint

COPY --chown=django:django ./compose/production/django/start /start
RUN sed -i 's/\r$//g' /start && \
    chmod +x /start

# Copy application code
COPY --chown=django:django . ${APP_HOME}

# Fix permissions
RUN chown -R django:django ${APP_HOME} && \
    find ${APP_HOME} -type d -exec chmod 755 {} \; && \
    find ${APP_HOME} -type f -exec chmod 644 {} \;

USER django

ENTRYPOINT ["/entrypoint"]