#!/bin/sh -e

if [ ! -d .git ]; then
    echo "no .git present.  run this from the base dir of the git checkout."
    exit 1
fi

version=$1
[ -z "$version" ] && version=`git describe --match 'v*' | sed 's/^v//'`
outfile="ceph-$version"

echo "version $version"

# update submodules
echo "updating submodules..."
force=$(if git submodule usage 2>&1 | grep --quiet 'update.*--force'; then echo --force ; fi)
if ! git submodule sync || ! git submodule update $force --init --recursive; then
    echo "Error: could not initialize submodule projects"
    echo "  Network connectivity might be required."
    exit 1
fi

download_boost() {
    boost_version=$1
    shift
    boost_sha256=$1
    shift
    boost_version_underscore=$(echo $boost_version | sed 's/\./_/g')
    boost_fname=boost_${boost_version_underscore}.tar.bz2
    set +e
    while true; do
        url_base=$1
        shift
        if [ -z $url_base ]; then
            echo "Error: failed to download boost."
            exit
        fi
        url=$url_base/$boost_fname
        wget -c --no-verbose -O $boost_fname $url
        if [ $? != 0 -o ! -e $boost_fname ]; then
            echo "Download of $url failed"
        elif [ $(sha256sum $boost_fname | awk '{print $1}') != $boost_sha256 ]; then
            echo "Error: failed to download boost: SHA256 mismatch."
        else
            break
        fi
    done
    set -e
    tar xjf $boost_fname -C src \
        --exclude="$boost_version_underscore/libs/*/doc" \
        --exclude="$boost_version_underscore/libs/*/example" \
        --exclude="$boost_version_underscore/libs/*/examples" \
        --exclude="$boost_version_underscore/libs/*/meta" \
        --exclude="$boost_version_underscore/libs/*/test" \
        --exclude="$boost_version_underscore/tools/boostbook" \
        --exclude="$boost_version_underscore/tools/quickbook" \
        --exclude="$boost_version_underscore/tools/auto_index" \
        --exclude='doc' --exclude='more' --exclude='status'
    mv src/boost_${boost_version_underscore} src/boost
    tar cf ${outfile}.boost.tar ${outfile}/src/boost
    rm -rf src/boost
}

download_gperftools() {
    version=$1
    shift
    sha256=$1
    shift
    dname=gperftools-$version
    fname=$dname.tar.gz
    url=https://github.com/gperftools/gperftools/releases/download/$dname/$fname

    if ! wget -c --no-verbose -O $fname $url; then
        echo "Download of $url failed"
        exit 1
    elif [ $(sha256sum $fname | awk '{print $1}') != $sha256 ]; then
        echo "Error: failed to download gperftools: SHA256 mismatch."
        exit 1
    fi
    tar xzf $fname -C src
    mv src/$dname src/gperftools
    tar cf ${outfile}.gperftools.tar ${outfile}/src/gperftools
    rm -rf src/gperftools
}

_python_autoselect() {
  python_command=
  for interpreter in python2.7 python3 ; do
    type $interpreter > /dev/null 2>&1 || continue
    python_command=$interpreter
    break
  done
  if [ -z "$python_command" ] ; then
    echo "Could not find a suitable python interpreter! Bailing out."
    exit 1
  fi
  echo $python_command
}

build_dashboard_frontend() {
  CURR_DIR=`pwd`
  TEMP_DIR=`mktemp -d`
  $CURR_DIR/src/tools/setup-virtualenv.sh --python=$(_python_autoselect) $TEMP_DIR
  $TEMP_DIR/bin/pip install nodeenv
  $TEMP_DIR/bin/nodeenv -p --node=8.11.3
  cd src/pybind/mgr/dashboard/frontend
  . $TEMP_DIR/bin/activate
  npm i -g npm --unsafe-perm
  npm ci
  npm run build -- --prod --progress=false
  deactivate
  cd $CURR_DIR
  rm -rf $TEMP_DIR
  tar cf dashboard_frontend.tar $outfile/src/pybind/mgr/dashboard/frontend/dist
}

# clean out old cruft...
echo "cleanup..."
rm -f $outfile*

# build new tarball
echo "building tarball..."
bin/git-archive-all.sh --prefix ceph-$version/ \
		       --verbose \
		       --ignore corpus \
		       $outfile.tar

# populate files with version strings
echo "including src/.git_version, ceph.spec"

(git rev-parse HEAD ; git describe) 2> /dev/null > src/.git_version

# if the version has '-' in it, it has a 'release' part,
# like vX.Y.Z-N-g<shortsha1>.  If it doesn't, it's just
# vX.Y.Z.  Handle both, and translate - to . for rpm
# naming rules (the - separates version and release).

if expr index $version '-' > /dev/null; then
	rpm_version=`echo $version | cut -d - -f 1-1`
	rpm_release=`echo $version | cut -d - -f 2- | sed 's/-/./'`
else
	rpm_version=$version
	rpm_release=0
fi

for spec in ceph.spec.in alpine/APKBUILD.in; do
    cat $spec |
        sed "s/@VERSION@/$rpm_version/g" |
        sed "s/@RPM_RELEASE@/$rpm_release/g" |
        sed "s/@TARBALL_BASENAME@/ceph-$version/g" > `echo $spec | sed 's/.in$//'`
done
ln -s . $outfile
tar cvf $outfile.version.tar $outfile/src/.git_version $outfile/ceph.spec $outfile/alpine/APKBUILD
# NOTE: If you change this version number make sure the package is available
# at the three URLs referenced below (may involve uploading to download.ceph.com)
boost_version=1.67.0
download_boost $boost_version 2684c972994ee57fc5632e03bf044746f6eb45d4920c343937a465fd67a5adba \
               https://dl.bintray.com/boostorg/release/$boost_version/source \
               https://downloads.sourceforge.net/project/boost/boost/$boost_version \
               https://download.ceph.com/qa
download_gperftools 2.7 1ee8c8699a0eff6b6a203e59b43330536b22bbcbe6448f54c7091e5efb0763c9
build_dashboard_frontend
tar --concatenate -f $outfile.all.tar $outfile.version.tar
tar --concatenate -f $outfile.all.tar $outfile.boost.tar
tar --concatenate -f $outfile.all.tar $outfile.gperftools.tar
tar --concatenate -f $outfile.all.tar $outfile.tar
tar --concatenate -f $outfile.all.tar dashboard_frontend.tar
mv $outfile.all.tar $outfile.tar
rm $outfile
rm -f $outfile.version.tar
rm -f $outfile.boost.tar

echo "compressing..."
bzip2 -9 $outfile.tar

echo "done."