#!/bin/sh

set -e

multiarch=x86_64-linux-gnu
priority=2111
basedir=/usr/lib/jvm/java-21-openjdk-amd64
mandir=$basedir/man
jdiralias=java-1.21.0-openjdk-amd64
srcext=1.gz
dstext=1.gz
jdk_hl_tools='jar jarsigner javac javadoc javap jcmd jdb jdeprscan jdeps jfr jimage jinfo jlink jmap jmod jps jrunscript jshell jstack jstat jstatd jwebserver serialver jhsdb'

case "$1" in
configure)
    # obsolete tool
    if update-alternatives --list apt 2>/dev/null; then
	update-alternatives --remove-all apt || true
    fi

    if [ -z "$2" ]; then
	update_alternatives=y
    fi
    if [ -n "$multiarch" ] && [ -n "$2" ]; then
	for i in $jdk_hl_tools; do
	    if [ -z "$(update-alternatives --list $i 2>/dev/null | grep ^$basedir/)" ]; then
		update_alternatives=y
		break
	    fi
	done
    fi
    if [ "$update_alternatives" != y ] && [ $priority -gt 1060 ]; then
	for i in $jre_tools; do
	    oldp=$(update-alternatives --query java | awk -v b=$basedir '/^Alternative:/ && $2~b {p=1} /^Priority:/ && p {print $2; exit}')
	    if [ -n "$oldp" ] && [ "$oldp" -le 1060 ]; then
		update_alternatives=y
		break
	    fi
	done
    fi

    if [ "$update_alternatives" = y ]; then
    if [ -n "$multiarch" ] && [ "$DPKG_MAINTSCRIPT_ARCH" != $(dpkg --print-architecture) ]; then
	priority=$(expr $priority - 1)
    fi
    for i in $jdk_hl_tools; do
	unset slave1 slave2 || true
        if [ -e $mandir/man1/$i.$srcext ]; then
	    slave1="--slave \
		/usr/share/man/man1/$i.$dstext \
                $i.$dstext \
                $mandir/man1/$i.$srcext"
	fi
        if false && [ -e $mandir/ja/man1/$i.$srcext ]; then
	    slave2="--slave \
		/usr/share/man/ja/man1/$i.$dstext \
                ${i}_ja.$dstext \
                $mandir/ja/man1/$i.$srcext"
	fi
        update-alternatives \
            --install \
            /usr/bin/$i \
            $i \
            $basedir/bin/$i \
            $priority \
	    $slave1 $slave2
    done
    fi # update alternatives

    ;;
esac



exit 0