#!/bin/sh

set -eu

args=
package=
open_after=

print_help() {
	cat << EOF
Usage: $0 [flags] package
Flags:
	-o: open result in imv
	-f, -g, -m, -R, -M: flags passed to xbps-dgraph
EOF

	exit 1
}

while [ $# -gt 0 ]; do
	case $1 in
		-g|-f|-m|-R|-M) args="$args $1";;
		-o) open_after=1;;
		*) package="$1";;
	esac
	shift
done

if [ -z "$package" ]; then
	print_help
fi

echo "Generating graph for $package"

if [ "$open_after" ]; then
	xbps-dgraph $args $package | dot -Tpng | imv -
else
	xbps-dgraph $args $package | dot -Tpng -o "${package}.png"
fi