#!/bin/bash -e
usage () { cat <<END
usage: .../jpctb /path/to/dir/with/PCTB*.jar /path/to/yohoho/yohoho [...]
END
}

fail () {
	echo >&2 "jpctb: $*"
	exit 127
}

if [ $# -lt 2 ]; then usage; fail 'bad usage'; exit 127; fi

srcjardir="$1"; shift
yohoho="$1"; shift

#---------- find ourselves ----------

jpctbdir="$0"
jpctbdir="${jpctbdir%/*}"

case "$jpctbdir" in
/*)	;;
*)	jpctbdir="$PWD/$jpctbdir" ;;
esac

#---------- find YPP client and the Java installation it uses ----------

yppdir="${yohoho%/*}"

if [ -x "$yppdir/java/bin/java" ]; then
	javadir="$yppdir/java"
elif [ x"$JAVA_HOME" != x ] && [ -x "$JAVA_HOME/bin/java" ]; then
	javadir="$JAVA_HOME"
else
	fail "could not find java runtime system"
fi

case "$javadir" in
/*)	;;
*)	javadir="$PWD/$javadir" ;;
esac

jtmp="$jpctbdir/tmp"
linkfarm="$jtmp/linkfarm"
extdir="$jtmp/ext"

#---------- confirm for the user which paths we're using ----------

cat <<END
jpctb:
   jpctb tree:	 "$jpctbdir"
   yohoho:       "$yohoho"
   java:         "$javadir"
   PCTB jars:    "$srcjardir"
   jpctb tmpdir: "$jtmp"
END

#---------- create the temporary are and link farm ----------

rm -rf -- "$jtmp"
mkdir -- "$jtmp" "$extdir" "$linkfarm"
cp "$srcjardir"/PCTB*.jar "$extdir"

lndir -silent "$javadir" "$linkfarm"

#---------- edit the linkfarm to have our jvm wrapper ----------

wrapper="$linkfarm"/jre/bin/java
rm -- "$wrapper"

export JPCTB_EXTDIR="$extdir"
export JPCTB_JRE="$javadir/jre"

cat <<'END' >"$wrapper"
#!/bin/bash
	set -e$JPCTB_JWRAP_X

	log () {
		lh=`date +'%Y/%m/%d %H:%M:%S jpctb'`
		printf >&2 "%s: %s |\f\n" "$lh" "$*"
	}

	log "invoked as $*"

#echo >&2 "$djava-wrap 
#exec 4>>/home/ian/u
#date >&4
#exec 4>&-

	yppclass=com.threerings.yohoho.client.YoApp
	atclass=com.tedpearson.ypp.market.MarketUploader

	args=( "$@" )
	nargs=${#args[*]}
	lastarg="${args[$(( $nargs - 1 ))]}"

	fail () { echo >&2 "jpctb-java: $*"; exit 127; }

	if [ x"$lastarg" = x"$yppclass" ]; then

		[ x"$JPCTB_EXTDIR" != x ] || fail 'JPCTB_EXTDIR not set'

	        set     -e$JPCTB_JWRAP_X -- \
	                -Djavax.accessibility.assistive_technologies=$atclass \
	                -Djava.ext.dirs="$JPCTB_EXTDIR:$JPCTB_JRE/lib/ext" \
	                "$@"
	fi

	real="$JPCTB_JRE/bin/java"
	log "running $real $*"
	exec "$real" "$@"
END

chmod +x -- "$wrapper"

#---------- now run it ----------

exec "$yohoho" -Djava.home="$linkfarm/jre"