#!/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
    boost_md5=$2
    boost_version_underscore=$(echo $boost_version | sed 's/\./_/g')
    boost_fname=boost_${boost_version_underscore}.tar.bz2
    echo "downloading boost_$boost_version..."
    wget --no-verbose -O $boost_fname \
         https://downloads.sourceforge.net/project/boost/boost/$boost_version/$boost_fname
    if [ $? != 0 -o ! -e $boost_fname ]; then
        echo "Error: failed to download boost."
        exit 1
    elif [ $(md5sum $boost_fname | awk '{print $1}') != $boost_md5 ]; then
        echo "Error: failed to download boost: MD5 mismatch."
        exit 1
    fi
    tar xjf $boost_fname -C src
    mv src/boost_${boost_version_underscore} src/boost
    tar cf ${outfile}.boost.tar src/boost
    rm -rf src/boost
}

# 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

download_boost 1.63.0 1c837ecd990bb022d07e7aab32b09847

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
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.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."