ARG PTLIB_VERSION="2.18.6"
ARG PTLIB_VERSION_PATH="v3.18 Cygni/Stable 6/ptlib-2.18.6"

ARG OPAL_VERSION="3.18.6"
ARG OPAL_VERSION_PATH="v3.18 Cygni/Stable 6/opal-3.18.6"

ARG T38MODEM_VERSION="4.6.2"

FROM docker.io/debian:12.8-slim AS builder
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update \
  && apt-get upgrade -y \
  && apt-get install -y --no-install-recommends ca-certificates build-essential pkg-config wget libssl-dev libsrtp2-dev libspandsp-dev

WORKDIR /usr/src
RUN mkdir /opt/t38modem
ENV PKG_CONFIG_PATH=/opt/t38modem/lib/pkgconfig
ENV LD_LIBRARY_PATH=/opt/t38modem/lib

ARG PTLIB_VERSION
ARG PTLIB_VERSION_PATH
RUN wget -q -O- "https://sourceforge.net/projects/opalvoip/files/${PTLIB_VERSION_PATH}.tar.bz2" \
  | tar xj \
  && cd "ptlib-${PTLIB_VERSION}" \
  && CPPFLAGS="-O3 -flto=auto" LDFLAGS="-O3 -flto=auto" ./configure --prefix=/opt/t38modem \
  && make -j$(nproc) \
  && make install \
  && rm -rf "/usr/src/ptlib-${PTLIB_VERSION}"

ARG OPAL_VERSION
ARG OPAL_VERSION_PATH
RUN wget -q -O- "https://sourceforge.net/projects/opalvoip/files/${OPAL_VERSION_PATH}.tar.bz2" \
  | tar xj \
  && cd "opal-${OPAL_VERSION}" \
  && CPPFLAGS="-O3" ./configure --prefix=/opt/t38modem \
  && make -j$(nproc) \
  && make install \
  && rm -rf "/usr/src/opal-${OPAL_VERSION}"

ARG T38MODEM_VERSION
RUN wget -q -O- "https://github.com/hehol/t38modem/archive/refs/tags/${T38MODEM_VERSION}.tar.gz" \
  | tar xz \
  && cd "t38modem-${T38MODEM_VERSION}" \
  && CPPFLAGS="-O3 -flto=auto -Wno-narrowing" LDFLAGS="-O3 -flto=auto" make \
  && mv t38modem /opt/t38modem/bin \
  && rm -rf "/usr/src/t38modem-${T38MODEM_VERSION}"

FROM docker.io/debian:12.8-slim AS runner
LABEL maintainer="dominic@dergrimm.net" \
  org.opencontainers.image.title="t38modem" \
  org.opencontainers.image.description="t38modem bridged over socat TCP" \
  org.opencontainers.image.authors="Dominic Grimm" \
  org.opencontainers.image.source="https://git.dergrimm.net/dergrimm/linux-fax-stack.git"

ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update \
  && apt-get upgrade -y \
  && apt-get install -y ca-certificates socat libssl-dev libsrtp2-dev libspandsp-dev \
  && apt-get clean -y \
  && apt-get autoremove -y \
  && apt-get autoclean -y \
  && rm -rf /tmp/* \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /usr/local/t38modem
COPY --from=builder /opt/t38modem/lib /usr/local/t38modem/lib
COPY --from=builder /opt/t38modem/bin/t38modem /usr/local/t38modem/bin/t38modem
COPY services services
COPY start.sh .
RUN chmod +x /usr/local/t38modem/services/t38modem.sh /usr/local/t38modem/services/socat.sh /usr/local/t38modem/start.sh

RUN rm -rf /tmp/*

ENV PATH="$PATH:/usr/local/t38modem/bin"
ENV PREFIX="/usr/local/t38modem"
ENV LD_LIBRARY_PATH="/usr/local/t38modem/lib"
ARG PTLIB_VERSION
ARG OPAL_VERSION
ENV PTLIBPLUGINDIR="/usr/local/t38modem/lib/ptlib-${PTLIB_VERSION}:/usr/local/t38modem/lib/opal-${OPAL_VERSION}"

ENTRYPOINT [ "/usr/local/t38modem/start.sh" ]