#!/bin/bash

if [ -f /usr/share/java-utils/java-functions ] ; then
  . /usr/share/java-utils/java-functions
  set_jvm
  set_javacmd
fi

function install_metadata()
{
    mkdir -p "$1"
    tar xf /usr/share/maven/repo-metadata.tar.xz -C "$1"
}

function help()
{
    echo "mvn-rpmbuild [options] [<goal(s)>] [<phase(s)>]"
    echo
    echo "mvn-rpmbuild is custom Fedora maven used for building maven projects"
    echo "using only jar files provided by rpms installed on your system. It will"
    echo "never download artifacts from remote repositories. You can modify its"
    echo "behaviour using several environment variables:"
    echo
    echo "-Dmaven.repo.local [default:$(pwd)/.m2] - custom location of maven repository"
    echo "-Dmaven.local.depmap.file - file containing custom dependency mapping between"
    echo "                            groupId:artifactId and jar file. File format see:"
    echo "                            http://fedoraproject.org/wiki/Java/JPPMavenReadme"
    echo "-Dmaven.local.debug - if set maven will print additional resolving information"
    echo "                      that can be useful for debugging resolver problems"
}


# add maven.repo.local if it's not defined already
local_add="-Dmaven.repo.local=$(pwd)/.m2/"

# Check whether we are ran in mock
# FIXME: is there a better way to do this?
mock=test
test "$HOME" = /builddir && mock=:

if $mock; then
  log_file="$(umask 2 && mktemp -t mvn-rpmbuild.$$.XXXXXXXXXX)"
  logfile_add="-Dmaven.resolver.logfile=$log_file"
fi

function process_args()
{
while [ $# != 0 ]; do
        flag="$1"
        case "$flag" in
             -h|--help)
                help
                ;;
             *) ind=`expr match "$flag" -Dmaven.repo.local=`
                if [[ $ind != 0 ]];then
                    install_metadata "${flag/-Dmaven.repo.local=/}/"
                    local_add=""
                fi
                ;;
        esac
        shift
done
}

process_args "$@"

if [ -n "$local_add" ];then
    install_metadata "${local_add/-Dmaven.repo.local=/}/"
fi

export M2_HOME=/usr/share/maven
echo $JAVA_HOME
export JAVA_HOME
# can't put it on command line due to
# http://jira.codehaus.org/browse/SUREFIRE-121
export MAVEN_OPTS="$MAVEN_OPTS -Dmaven.local.mode ${local_add} ${logfile_add}"

$M2_HOME/bin/mvn -o "$@" || exit $?
$mock || exit 0

sanitize() {
    for obj in $1; do
	echo -n 'mvn-rpmbuild: possibly redundant dependency: '
	rpm -qf "$(readlink -f $obj)" | sed 's/-[^-]*-[^-]*$//'
    done | sort -u
}

installed=$(sanitize "$(rpm -ql `package-cleanup --all --leaves | xargs` | egrep '\.(jar|pom)$')")
used=$(sanitize "$(cat $log_file 2>/dev/null)")

diff - /dev/fd/3 <<<"$installed" 3<<<"$used" | grep '^< ' | sed s/..//

: