# Dockerfile to build aria2 Windows binary using ubuntu mingw-w64
# cross compiler chain.
#
# $ sudo docker build -t aria2-mingw -f Dockerfile.mingw .
#
# After successful build, windows binary is located at
# /aria2/src/aria2c.exe.  You can copy the binary to the current dir
# using following command (replace $PWD with any other full path if desired):
#
# $ sudo docker run --rm -v $PWD:/output aria2-mingw

# Additional arguments can be set with --build-arg. For example, to build local source code instead of
# the latest master on github, set SOURCE=local:
#
# $ sudo docker build -t aria2-mingw -f Dockerfile.mingw --build-arg SOURCE=local .
#
# Available build parameters:
# SOURCE       - "git" (default) to use Aria2 code from github. "local" to copy current directory.
# GIT_TAG      - if SOURCE=git (default), set which branch or tag to download.
# LIBARIA2     - disable (default) / enable -- should the libaria2 library be built
# ARIA2_STATIC - yes (default) / no -- compile as a dynamic or static code
# HOST         - By default uses i686-w64-mingw32.  Set to x86_64-w64-mingw32 to build 64-bit binary
#
# Note that LIBARIA2 and ARIA2_STATIC params might not work for older versions.
#

ARG SOURCE=git
ARG GIT_TAG=master
ARG LIBARIA2=disable
ARG ARIA2_STATIC=yes
ARG HOST=i686-w64-mingw32

FROM ubuntu:20.04 as build_base
ARG SOURCE GIT_TAG LIBARIA2 ARIA2_STATIC HOST

MAINTAINER Tatsuhiro Tsujikawa

# Preserve all build params as ENV vars. This way CMD below will work properly,
# plus they will be available if the container is executed with  "docker run ... bash"
ENV SOURCE=${SOURCE} \
    GIT_TAG=${GIT_TAG} \
    LIBARIA2=${LIBARIA2} \
    ARIA2_STATIC=${ARIA2_STATIC} \
    HOST=${HOST}

RUN echo "Build configuration:" && \
    echo "  - SOURCE='${SOURCE}'" && \
    echo "  - GIT_TAG='${GIT_TAG}'" && \
    echo "  - LIBARIA2='${LIBARIA2}'" && \
    echo "  - ARIA2_STATIC='${ARIA2_STATIC}'" && \
    echo "  - HOST='${HOST}'"

# It would be better to use nearest ubuntu archive mirror for faster
# downloads.
# RUN sed -ie 's/archive\.ubuntu/jp.archive.ubuntu/g' /etc/apt/sources.list

RUN apt-get update && \
    DEBIAN_FRONTEND="noninteractive" \
    apt-get install -y --no-install-recommends \
        make binutils autoconf automake autotools-dev libtool \
        patch ca-certificates \
        pkg-config git curl dpkg-dev gcc-mingw-w64 g++-mingw-w64 \
        autopoint libcppunit-dev libxml2-dev libgcrypt20-dev lzip

RUN curl -L -O https://gmplib.org/download/gmp/gmp-6.2.1.tar.lz && \
    curl -L -O https://github.com/libexpat/libexpat/releases/download/R_2_4_1/expat-2.4.1.tar.bz2 && \
    curl -L -O https://www.sqlite.org/2021/sqlite-autoconf-3360000.tar.gz && \
    curl -L -O http://zlib.net/zlib-1.2.11.tar.gz && \
    curl -L -O https://c-ares.haxx.se/download/c-ares-1.17.2.tar.gz && \
    curl -L -O https://www.libssh2.org/download/libssh2-1.9.0.tar.gz && \
    curl -L -O https://github.com/libssh2/libssh2/commit/ba149e804ef653cc05ed9803dfc94519ce9328f7.patch

RUN tar xf gmp-6.2.1.tar.lz && \
    cd gmp-6.2.1 && \
    ./configure \
        --disable-shared \
        --enable-static \
        --prefix=/usr/local/${HOST} \
        --host=${HOST} \
        --disable-cxx \
        --enable-fat \
        CFLAGS="-mtune=generic -O2 -g0" && \
    make install

RUN tar xf expat-2.4.1.tar.bz2 && \
    cd expat-2.4.1 && \
    ./configure \
        --disable-shared \
        --enable-static \
        --prefix=/usr/local/${HOST} \
        --host=${HOST} \
        --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \
    make install

RUN tar xf sqlite-autoconf-3360000.tar.gz && \
    cd sqlite-autoconf-3360000 && \
    ./configure \
        --disable-shared \
        --enable-static \
        --prefix=/usr/local/${HOST} \
        --host=${HOST} \
        --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \
    make install

RUN tar xf zlib-1.2.11.tar.gz && \
    cd zlib-1.2.11 && \
    CC=${HOST}-gcc \
    AR=${HOST}-ar \
    LD=${HOST}-ld \
    RANLIB=${HOST}-ranlib \
    STRIP=${HOST}-strip \
    ./configure \
        --prefix=/usr/local/${HOST} \
        --libdir=/usr/local/${HOST}/lib \
        --includedir=/usr/local/${HOST}/include \
        --static && \
    make install

RUN tar xf c-ares-1.17.2.tar.gz && \
    cd c-ares-1.17.2 && \
    ./configure \
        --disable-shared \
        --enable-static \
        --without-random \
        --prefix=/usr/local/${HOST} \
        --host=${HOST} \
        --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` \
        LIBS="-lws2_32" && \
    make install

RUN tar xf libssh2-1.9.0.tar.gz && \
    cd libssh2-1.9.0 && \
    patch -p1 < ../ba149e804ef653cc05ed9803dfc94519ce9328f7.patch && \
    ./configure \
        --disable-shared \
        --enable-static \
        --prefix=/usr/local/${HOST} \
        --host=${HOST} \
        --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` \
        --without-openssl \
        --with-wincng \
        LIBS="-lws2_32" && \
    make install


#
# The above "build_base" stage builds common steps,
# before copying/downloading aria2 source code. The following
# two steps will either copy sources from the local dir,
# or will download a specific tag/branch from github.
# The last stage will use the needed stage, running the delayed steps.
#
FROM build_base as build_local
ARG SOURCE GIT_TAG LIBARIA2 ARIA2_STATIC HOST
ONBUILD COPY . /aria2


FROM build_base as build_git
ARG SOURCE GIT_TAG LIBARIA2 ARIA2_STATIC HOST
ONBUILD ADD https://api.github.com/repos/aria2/aria2/git/refs/heads/${GIT_TAG} version.json
ONBUILD RUN echo "Downloading '${GIT_TAG}' from https://github.com/aria2/aria2" && \
            git clone https://github.com/aria2/aria2 --depth 1 --branch "${GIT_TAG}"

FROM build_${SOURCE}
ARG SOURCE GIT_TAG LIBARIA2 ARIA2_STATIC HOST

RUN ln -s /usr/local/${HOST} /usr/local/mingw && \
    cd /aria2 && \
    autoreconf -i && \
    export LIBARIA2=${LIBARIA2} && \
    export ARIA2_STATIC=${ARIA2_STATIC} && \
    export HOST=${HOST} && \
    export PREFIX=/usr/local/${HOST} && \
    ./mingw-config && \
    make && \
    make install && \
    ${HOST}-strip /usr/local/${HOST}/bin/aria2c.exe

RUN echo "Finished build configuration:" && \
    echo "  - SOURCE='${SOURCE}'" && \
    echo "  - GIT_TAG='${GIT_TAG}'" && \
    echo "  - LIBARIA2='${LIBARIA2}'" && \
    echo "  - ARIA2_STATIC='${ARIA2_STATIC}'" && \
    echo "  - HOST='${HOST}'"

# Define default command to simplify copying the build artifacts out of the container.
# Requires the user to provide the /output volume with the docker run -v <path>:/output ...
# By default, aria2c.exe will be copied to the <path>/bin.
# If the container is built with LIBARIA2 enabled, it will also copy the aria2.h file
# to <path>/include/aria2/aria2.h, and all *.la and *.a files to <path>/lib/ dir.
CMD set -e ; \
    if [ ! -d /output ] ; then \
        echo 'The /output dir is not set. Use "docker run -v <path>:/output ..." to copy build results into the <path> dir. To explore this container, append "bash" at the end of docker run command.' ; \
    else \
        mkdir -p /output/bin
        cp -v /usr/local/${HOST}/bin/aria2c.exe /output/bin ; \
        if [ "${LIBARIA2}" = "enable" ] ; then \
            mkdir -p /output/lib
            cp -v /usr/local/${HOST}/lib/*.a /usr/local/${HOST}/lib/*.la /output/lib ; \
            mkdir -p /output/include/aria2
            cp -v /usr/local/${HOST}/include/aria2/*.h /output/include/aria2 ; \
        fi \
    fi