FROM ubuntu:24.04 AS builder

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        build-essential autoconf automake libtool pkg-config \
        wget ca-certificates && \
    rm -rf /var/lib/apt/lists/*

# Build libredwg from source (not available in apt repos)
ARG LIBREDWG_VERSION=0.13.3
RUN wget -q "https://github.com/LibreDWG/libredwg/releases/download/${LIBREDWG_VERSION}/libredwg-${LIBREDWG_VERSION}.tar.xz" && \
    tar xf "libredwg-${LIBREDWG_VERSION}.tar.xz" && \
    cd "libredwg-${LIBREDWG_VERSION}" && \
    ./configure --prefix=/usr/local --disable-static --disable-docs && \
    make -j"$(nproc)" && \
    make install

# ---

FROM ubuntu:24.04

# Copy only the built binaries and libraries
COPY --from=builder /usr/local/bin/dwg2dxf /usr/local/bin/
COPY --from=builder /usr/local/lib/libredwg* /usr/local/lib/

RUN ldconfig && \
    apt-get update && \
    apt-get install -y --no-install-recommends python3 python3-pip && \
    pip3 install --no-cache-dir --break-system-packages flask && \
    apt-get purge -y python3-pip && \
    apt-get autoremove -y && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY app.py .

RUN useradd --system --no-create-home converter
USER converter

EXPOSE 5001

HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
    CMD python3 -c "import urllib.request; urllib.request.urlopen('http://localhost:5001/health')" || exit 1

CMD ["python3", "app.py"]