# syntax=docker/dockerfile:1
#
# libmspub (Microsoft Publisher) and libcdr (CorelDRAW), with librevenge, compiled
# to one WebAssembly module for johnmcm.com's /pub-viewer and /cdr-viewer.
#
# Reproducible: the Emscripten image is pinned by version and digest, and every
# source tarball by version and SHA-256, downloaded from the projects' own
# release locations. Built from the OpenImprenta libmspub-wasm spike
# (https://github.com/RicardoNigrelli/libmspub-wasm, MPL-2.0), with libcdr
# and lcms2 added.
#
#   ./build.ps1            (or)   docker build --target export --output type=local,dest=dist .
#
# Licences: librevenge, libmspub and libcdr are MPL-2.0; lcms2 is MIT; zlib
# zlib; ICU Unicode-DFS-2016; Boost headers BSL-1.0. The sources of the MPL
# libraries, and these build files, are published at /source/revenge/.

ARG EMSDK_IMAGE=emscripten/emsdk:6.0.10@sha256:e077d54e2b8970575ebc4f185ac1de0b95c05f2b266134d4ba27449af7aebf65

FROM ${EMSDK_IMAGE} AS deps

ARG LIBREVENGE_VERSION=0.0.5
ARG LIBREVENGE_SHA256=5892ca6796f7a2a93d580832e907e849b19d980b40d326a283b18877ab6de0c5
ARG LIBMSPUB_VERSION=0.1.5
ARG LIBMSPUB_SHA256=3671095f5a10bee8a755052a30576952c5b16d8b0f2ba9f2fb998338c18cb119
ARG LIBCDR_VERSION=0.1.9
ARG LIBCDR_SHA256=f7bb6abdd7f226820f288a93dd8d07759833c0250d9e202af90f9b312c4665a3
ARG LCMS2_VERSION=2.19.1
ARG LCMS2_SHA256=bfc54f7bab59fbc921012014a8032e4cba4abd46db47d46b76416a8c0b2815c8

# libmspub and libcdr use C++ exceptions for ordinary control flow, so
# exceptions stay on, as native WebAssembly exceptions, everywhere.
ENV EH_FLAGS="-fwasm-exceptions"
ENV PREFIX=/opt/rv
ENV PORT_FLAGS="-sUSE_ZLIB=1 -sUSE_ICU=1 -sUSE_BOOST_HEADERS=1"

RUN embuilder build icu boost_headers zlib

WORKDIR /src
RUN curl -fsSL -o librevenge.tar.bz2 https://dev-www.libreoffice.org/src/librevenge-${LIBREVENGE_VERSION}.tar.bz2 \
 && echo "${LIBREVENGE_SHA256}  librevenge.tar.bz2" | sha256sum -c - \
 && curl -fsSL -o libmspub.tar.xz https://dev-www.libreoffice.org/src/libmspub/libmspub-${LIBMSPUB_VERSION}.tar.xz \
 && echo "${LIBMSPUB_SHA256}  libmspub.tar.xz" | sha256sum -c - \
 && curl -fsSL -o libcdr.tar.xz https://dev-www.libreoffice.org/src/libcdr/libcdr-${LIBCDR_VERSION}.tar.xz \
 && echo "${LIBCDR_SHA256}  libcdr.tar.xz" | sha256sum -c - \
 && curl -fsSL -o lcms2.tar.gz https://github.com/mm2/Little-CMS/releases/download/lcms${LCMS2_VERSION}/lcms2-${LCMS2_VERSION}.tar.gz \
 && echo "${LCMS2_SHA256}  lcms2.tar.gz" | sha256sum -c - \
 && tar xjf librevenge.tar.bz2 && tar xJf libmspub.tar.xz && tar xJf libcdr.tar.xz && tar xzf lcms2.tar.gz

# librevenge: core and streams (the generators are not needed: ours is in src/).
WORKDIR /src/librevenge-${LIBREVENGE_VERSION}
RUN emconfigure ./configure --prefix=${PREFIX} \
      --disable-shared --enable-static \
      --disable-tests --without-docs --disable-werror --disable-weffc \
      --enable-streams --disable-generators \
      CFLAGS="-Oz ${EH_FLAGS}" CXXFLAGS="-Oz ${EH_FLAGS} ${PORT_FLAGS}" CPPFLAGS="${PORT_FLAGS}" \
      LDFLAGS="${PORT_FLAGS} ${EH_FLAGS}" \
      ZLIB_CFLAGS=" " ZLIB_LIBS="-sUSE_ZLIB=1" \
 && emmake make -j"$(nproc)" && emmake make install

# lcms2 (colour management, used by libcdr for CMYK and spot colours).
WORKDIR /src/lcms2-${LCMS2_VERSION}
RUN emconfigure ./configure --prefix=${PREFIX} --disable-shared --enable-static \
      --without-jpeg --without-tiff --without-zlib CFLAGS="-Oz" \
 && emmake make -j"$(nproc)" -C src && emmake make -C src install && emmake make -C include install

# libmspub, with the spike's three patches.
COPY patches/libmspub/ /patches/libmspub/
WORKDIR /src/libmspub-${LIBMSPUB_VERSION}
RUN for p in /patches/libmspub/*.patch; do echo "applying $p"; git apply --verbose "$p"; done \
 && emconfigure ./configure --prefix=${PREFIX} \
      --disable-shared --enable-static \
      --disable-tools --disable-fuzzers --without-docs --disable-werror --disable-weffc \
      CFLAGS="-Oz ${EH_FLAGS}" CXXFLAGS="-Oz ${EH_FLAGS} ${PORT_FLAGS}" CPPFLAGS="${PORT_FLAGS}" \
      LDFLAGS="${PORT_FLAGS} ${EH_FLAGS}" \
      REVENGE_CFLAGS="-I${PREFIX}/include/librevenge-0.0" REVENGE_LIBS="-L${PREFIX}/lib -lrevenge-0.0" \
      ZLIB_CFLAGS=" " ZLIB_LIBS="-sUSE_ZLIB=1" ICU_CFLAGS=" " ICU_LIBS="-sUSE_ICU=1" \
 && emmake make -j"$(nproc)" && emmake make install

# libcdr.
WORKDIR /src/libcdr-${LIBCDR_VERSION}
RUN emconfigure ./configure --prefix=${PREFIX} \
      --disable-shared --enable-static \
      --disable-tools --disable-fuzzers --disable-tests --without-docs --disable-werror --disable-weffc \
      CFLAGS="-Oz ${EH_FLAGS}" CXXFLAGS="-Oz ${EH_FLAGS} ${PORT_FLAGS}" CPPFLAGS="${PORT_FLAGS} -I${PREFIX}/include" \
      LDFLAGS="${PORT_FLAGS} ${EH_FLAGS} -L${PREFIX}/lib" \
      REVENGE_CFLAGS="-I${PREFIX}/include/librevenge-0.0" REVENGE_LIBS="-L${PREFIX}/lib -lrevenge-0.0" \
      LCMS2_CFLAGS="-I${PREFIX}/include" LCMS2_LIBS="-L${PREFIX}/lib -llcms2" \
      ZLIB_CFLAGS=" " ZLIB_LIBS="-sUSE_ZLIB=1" ICU_CFLAGS=" " ICU_LIBS="-sUSE_ICU=1" \
 && emmake make -j"$(nproc)" && emmake make install

# Filtered ICU data: only the codepage converters the libraries ask for.
FROM deps AS icudata
RUN apt-get update && apt-get install -y --no-install-recommends icu-devtools=74.2-1ubuntu3.1 && rm -rf /var/lib/apt/lists/*
COPY icu/make-icudata.sh /icu/make-icudata.sh
RUN bash /icu/make-icudata.sh /opt/icudata

FROM deps AS wasm
WORKDIR /binding
COPY --from=icudata /opt/icudata/icudata_subset.c ./
COPY src/ ./
RUN bash ./compile.sh /out

FROM scratch AS export
COPY --from=wasm /out/ /