ARG IMAGE_VERSION
FROM docker.io/rockdrilla/angie-conv:${IMAGE_VERSION}-deps AS deps

## ---

FROM deps AS setup
SHELL [ "/bin/sh", "-ec" ]

COPY /scripts/*       /usr/local/sbin/
COPY /extra-scripts/* /usr/local/sbin/

ADD https://angie.software/keys/angie-signing.gpg /tmp/angie.gpg.bin
COPY /apt/sources.angie /etc/apt/sources.list.d/angie.txt

RUN pkg='gnupg' ; \
    apt-install.sh ${pkg} ; \
    ## process Angie GPG keyring / APT sources
    gpg-export.sh /tmp/angie.gpg.bin /etc/apt/keyrings/angie.gpg.asc ; \
    rm -f /tmp/angie.gpg.bin ; \
    env -C /etc/apt/sources.list.d mv angie.txt angie.sources ; \
    ## verify sources!
    apt-env.sh apt-get update ; \
    apt-remove.sh ${pkg} ; \
    apt-clean.sh

## ---

FROM deps AS pycache
SHELL [ "/bin/sh", "-ec" ]

COPY /scripts/*       /usr/local/sbin/
COPY /extra-scripts/* /usr/local/sbin/

COPY /j2cfg/ /usr/local/lib/j2cfg/

ENV PYTHONDONTWRITEBYTECODE=''

## Python cache preseed

RUN python3 -m compileall -q -j 2 /usr/local/lib/j2cfg/

RUN libpython="${PYTHON_SITE_PACKAGES%/*}" ; \
    find "${libpython}/" -mindepth 1 -maxdepth 1 -printf '%P\0' \
    | sed -zEn \
      -e '/^(collections|importlib|json|re)$/p' \
    | sort -zV \
    | env -C "${libpython}" xargs -0r \
      python3 -m compileall -q -j 2 ; \
    find "${PYTHON_SITE_PACKAGES}/" -mindepth 1 -maxdepth 1 -printf '%P\0' \
    | sed -zE \
      -e '/\.(dist-info|pth|txt)$/d' \
      -e '/^(pip|pkg_resources|setuptools|wheel)$/d' \
    | sort -zV \
    | env -C "${PYTHON_SITE_PACKAGES}" xargs -0r \
      python3 -m compileall -q -j 2

## Python cache warmup
RUN j2cfg-single /usr/local/lib/j2cfg/test.j2 /tmp/test ; \
    cat /tmp/test ; echo ; echo ; \
    rm -f /tmp/test

## Python cache adjustments
RUN d="@$(date '+%s')" ; \
    find /usr/local/lib/ -name '*.pyc' -exec touch -m -d "$d" {} + ; \
    find /usr/local/lib/ -name __pycache__ -exec touch -m -d "$d" {} +

## ---

FROM deps
SHELL [ "/bin/sh", "-ec" ]

## NB: NGX_DEBUG is set via build script

COPY /Dockerfile /usr/local/share/

COPY --from=setup /etc/apt/keyrings/angie.gpg.asc        /etc/apt/keyrings/
COPY --from=setup /etc/apt/sources.list.d/angie.sources  /etc/apt/sources.list.d/

## RFC: Python cache
## TODO: reduce load by selecting only __pycache__ directories in either way
COPY --from=pycache /usr/local/lib/  /usr/local/lib/

## already copied by statement above
# COPY /j2cfg/ /usr/local/lib/j2cfg/

ENV ANGIE_MODULES_DIR=/usr/lib/angie/modules

COPY /scripts/* /usr/local/bin/

RUN _UID=11111 _GID=11111 ; \
    echo "angie:x:${_UID}:${_GID}:Angie:/etc/angie:/bin/false" >> /etc/passwd ; \
    echo "angie:x:${_GID}:" >> /etc/group ; \
    echo 'angie:!:::::::' >> /etc/shadow

RUN apt-install.sh angie ; \
    apt-clean.sh ; \
    ## verify Angie layout
    [ -d "${ANGIE_MODULES_DIR}" ] ; \
    n='/usr/sbin/angie' ; \
    [ -x "$n-debug" ] ; \
    [ -x "$n-nodebug" ] ; \
    ## adjust Angie binaries
    rm -fv "$n" ; \
    if [ "${NGX_DEBUG}" = 0 ] ; then \
        rm -fv "$n-debug" ; \
        mv -fv "$n-nodebug" "$n" ; \
    else \
        rm -fv "$n-nodebug" ; \
        mv -fv "$n-debug" "$n" ; \
    fi

## preserve snippets from Angie config directory
## ref: https://git.angie.software/web-server/angie/src/tag/Angie-1.7.0/conf
RUN d=/etc/angie ; t=$(mktemp -d) ; \
    tar -C "$d" -cf - \
      fastcgi_params \
      fastcgi.conf \
      mime.types \
      prometheus_all.conf \
      scgi_params \
      uwsgi_params \
    | tar -C "$t" -xf - ; \
    rm -rf "$d" ; \
    install -d "$d" "$d/snip.dist" ; \
    tar -C "$t" -cf - . | tar -C "$d/snip.dist" -xf - ; \
    rm -rf "$t"

## copy directory structure
COPY /angie/ /etc/angie/

## produce own layout for Angie >:)
## /angie/ is persistence store
RUN install -d -o angie -g angie -m 03777 /angie /run/angie ; \
    ## adjust paths across filesystem
    rm -rfv /var/cache/angie/ /var/lib/angie/ /var/log/angie/ ; \
    ln -sv /run/angie/cache  /var/cache/angie ; \
    ln -sv /run/angie/lib    /var/lib/angie ; \
    ln -sv /run/angie/log    /var/log/angie ; \
    ## adjust paths in config directory
    cd /etc/angie || exit 1 ; \
    ln -sv /run/angie            run ; \
    ln -sv /run/angie/load       load ; \
    ln -sv /run/angie/lock       lock ; \
    ln -sv ${ANGIE_MODULES_DIR}  modules.dist ; \
    ## hyper-modular paths:
    data='autoconf conf j2cfg mod modules site snip static tls' ; \
    vardata='cache lib log' ; \
    for n in ${data} ; do \
        for d in "$n" "$n.dist" ; do \
            [ -e "$d" ] || install -d "$d" ; \
        done ; \
    done ; \
    for n in ${data} ${vardata} ; do \
        ln -sv "/run/angie/$n" "$n.d" ; \
    done

## special empty directory
RUN d='/var/lib/empty' ; \
    rm -rf "$d" ; \
    if [ -d "$d" ] ; then exit 1 ; fi ; \
    install -d -m 0555 "$d"

## prepare DH params for TLS
## NB: disabled in pipeline for now
## reason: too slow (and too much effort)
# RUN cd /etc/angie/tls.dist || exit 1 ; \
#     openssl-generate-dh-bundle.sh

## future quirk for angie-module-modsecurity >:)
RUN n='modsecurity' ; \
    d="/etc/angie/$n" ; \
    ln -sv "/run/angie/$n" "$d.d" ; \
    dpkg-divert --divert "$d.dist" --rename "$d" ; \
    for p in modsecurity.conf unicode.mapping ; do \
        dpkg-divert --divert "$d.dist/$p" --rename "$d/$p" ; \
    done ; \
    p='rules.conf' ; \
    dpkg-divert --divert "$d.dist/$p.dist" --rename "$d/$p"

VOLUME [ "/run/angie" ]

## preseed builtin modules list
RUN x='angie-builtin-modules.sh' ; \
    "$x" ; \
    rm -fv "$(which "$x")"

## relatively lightweight modules
RUN apt-install-angie-mod.sh \
      brotli \
      cache-purge \
      echo \
      geoip2 \
      headers-more \
      subs \
      upload \
      zip \
      zstd \
    ; \
    apt-clean.sh

## adjust permissions/ownership
RUN d='/etc/angie' ; \
    chown -hR 0:0 "$d" ; \
    find "$d/" -name .gitkeep -type f -delete ; \
    find "$d/" -type d -exec chmod 0755 {} + ; \
    find "$d/" -type f -exec chmod 0644 {} +

## image-entry.sh is placed into /usr/local/bin/ to allow custom entrypoint/chaining:
## - there's no need to change ENTRYPOINT/CMD
## - custom entrypoint should be placed in /usr/local/sbin/
## - custom entrypoint should "exec" /usr/local/bin/image-entry.sh
COPY /image-entry.sh  /usr/local/bin/
COPY /image-entry.d/  /image-entry.d/

## must be bind-mounted only for local customization/overrides!
# RUN install -d /image-entry

## misc defaults
ENV DUMB_INIT_SETSID=0 \
    MALLOC_ARENA_MAX=4

STOPSIGNAL SIGQUIT

ENTRYPOINT [ "image-entry.sh" ]
CMD [ "angie" ]