#! /bin/bash

#
# Dieses Skript soll sowohl lokal in einer Working Copy als auch über Jenkins ausführbar sein.
# Unter Jenkins soll nur dieser Ordner ausgecheckt werden.
# Die gebauten RPMs werden von rpmbuild unter ~/rpmbuild/RPMS abgelegt.
# Wenn sie für Jenkins zugreifbar sein sollen (für die Artefacts), müssen sie jedoch
# irgendwo im Workspace liegen. Daher ist für die Verwendung über Jenkins ein optionaler
# Kopier- bzw. Move-Schritt am Ende notwendig.
#

determine_info_cmd()
{
    # check whether svn or git (svn-bridge) is used:
    local is_svn=1
    local info_cmd='svn info'
    svn info >> /dev/null 2>&1 || is_svn=0

    if [ $is_svn -eq 0 ]; then
        info_cmd='git svn info'
    fi

    echo $info_cmd
}

determine_revision()
{
    info_cmd=$(determine_info_cmd)

    local revision=$($info_cmd | grep "Last Changed Rev:" | cut -d ' ' -f 4)
    if [[ ! $revision -gt 0 ]]; then
        echo "Failed_to_determine_revision"
        exit 1
    fi

    echo $revision
}

copy_rpms()
{
    if [[ ! -d $outdir ]]; then
        mkdir -p "$outdir"
    fi

    rpms=($(find $rpm_builddir/RPMS -name "${project}_avs_conf-*-${version}-${revision}.*.rpm"))
    mv "${rpms[@]}" "$outdir"
}

usage()
{
    echo "usage: $0 [-p <project>] [-v <version>] [-o <outdir>]"
}

LANG=en_US

project=guez
version=1.0
outdir=
while getopts p:v:o:h opt_name
do
    case $opt_name in
        p) project="$OPTARG";;
        v) version="$OPTARG";;
        o) outdir="$OPTARG";;
        h) usage; exit 0;;
        ?) usage; exit 1;;
    esac
done

if [[ ! -d "$project" ]]; then
    echo "Missing folder for project $project!"
    exit 1
fi

revision=$(determine_revision)
spec_file=avs_conf.spec
spec_file_legacy=avs_conf-legacy-ws.spec
spec_file_if=avs_conf-if.spec

echo "Project: ${project}, Version: ${version}.${revision}"

rpm_builddir=$HOME/rpmbuild
src_dir=$rpm_builddir/SOURCES

[ ! -d "$src_dir" ] && mkdir -p "$src_dir"

# We use the same project tarball for both packages
tar czf "$src_dir/avs_conf.tgz" $project
cp "$src_dir/avs_conf.tgz" "$src_dir/avs_conf-if.tgz"

# Some projects don't need/have an AVS interface workstation and thus don't need avs_conf-if.
spec_files_to_build=("$spec_file")
if [[ $project != qatar ]]; then
    spec_files_to_build+=("$spec_file_if")
fi
if [[ $project == ahtc ]]; then
    spec_files_to_build+=("$spec_file_legacy")
fi

for f in "${spec_files_to_build[@]}"; do
    sed -e s,@PROJECT@,${project},g \
        -e s,@VERSION@,${version},g \
        -e s,@RELEASE@,${revision},g \
        ${f}.in > $f

    rpmbuild -bb $f
    if [ $? -ne 0 ]; then
       exit $?;
    fi
done

if [[ -n $outdir ]]; then
    copy_rpms
fi

for f in "${spec_files_to_build[@]}"; do
    rm $f;
done