#!/bin/bash
# annoyme - script to allow user intervention to otherwise backgrounded process.
# Copyright (C) 2016 Karel Kočí
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

DOT_ANNOYME=~/.annoyme

NAME=$1
EC=2

onexit() {
	rm -f "$DOT_ANNOYME/$NAME.script"
	rm -f "$DOT_ANNOYME/$NAME.pid"
	rm -f "$DOT_ANNOYME/$NAME.desc"
	rm -f "$DOT_ANNOYME/$NAME.out"
	kill $SLEEPID 2>/dev/null
	exit $EC
}
trap onexit EXIT INT QUIT TERM ABRT

mkdir -p $DOT_ANNOYME

echo "#!/bin/bash" > "$DOT_ANNOYME/$NAME.script"
while read -r LINE; do
	echo "$LINE" >> "$DOT_ANNOYME/$NAME.script"
done
chmod +x "$DOT_ANNOYME/$NAME.script"
echo "$$" > "$DOT_ANNOYME/$NAME.pid"
echo "$2" > "$DOT_ANNOYME/$NAME.desc"

onsuccess() {
	echo "User intervention successful." 1>&2
	cat "$DOT_ANNOYME/$NAME.out"
	EC=0
	exit
}

onfailure() {
	echo "User intervention failed." 1>&2
	EC=1
	exit
}

trap onsuccess SIGUSR1
trap onfailure SIGUSR2

echo "Waiting for user intervention using annoyme" 1>&2
notify-send -a "$NAME" "$NAME: User intervention required" "$2"
sleep 3h &
SLEEPID=$!
wait $SLEEPID
echo "User intervention timed out." 1>&2
notify-send -a "$NAME" "$NAME: User intervention request timed out."