FROM python:3.12-slim-bookworm AS builder

WORKDIR /build

COPY requirements.txt requirements.lock ./
RUN python -m venv /opt/venv \
    && /opt/venv/bin/pip install --no-cache-dir --upgrade pip \
    && /opt/venv/bin/pip install --no-cache-dir -r requirements.lock

FROM python:3.12-slim-bookworm AS runtime

RUN apt-get update && apt-get install -y --no-install-recommends \
        pandoc \
        libcairo2 \
        libpango-1.0-0 \
        libpangocairo-1.0-0 \
        libpangoft2-1.0-0 \
        libharfbuzz0b \
        libgdk-pixbuf-2.0-0 \
        libffi8 \
        shared-mime-info \
        fonts-dejavu-core \
        fonts-liberation \
    && rm -rf /var/lib/apt/lists/*

RUN groupadd --gid 1000 bookish \
    && useradd --uid 1000 --gid 1000 --create-home --home-dir /home/bookish bookish

COPY --from=builder /opt/venv /opt/venv

WORKDIR /app
COPY --chown=bookish:bookish app.py config.py gunicorn.conf.py ./
COPY --chown=bookish:bookish bookish ./bookish

ENV PATH="/opt/venv/bin:$PATH" \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    BOOKISH_DATA_DIR=/data \
    BOOKISH_DEBUG=false \
    PORT=5000

RUN mkdir -p /data/uploads /data/converted \
    && chown -R bookish:bookish /data /app

USER bookish
EXPOSE 5000
VOLUME ["/data"]

HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:5000/healthz', timeout=3)"

CMD ["gunicorn", "--config", "gunicorn.conf.py", "app:app"]