if_fail_do_notification

#!/usr/bin/env bash
# Send macOS notification if commans fails. Similar to ./if_fail_do_notification
# Requirements: terminal-notifier
# Limitation: can't be run in root cron job, as it's not connected to a GUI session: https://apple.stackexchange.com/a/257550/197493

cmd="$@"
scriptname=${0##*/}
file_stdout=$(mktemp -t ${scriptname}.XXXXXX)
file_stderr=$(mktemp -t ${scriptname}.XXXXXX)


exit_hook() {
	echo "In exit_hook(), cleaning up files." >&2
	rm $file_stdout $file_stderr
}
trap exit_hook INT TERM


# Con: can't separate $cmd stdout from stderr in calle of this script.
#eval "$cmd" 2>&1 | tee $file_stdout

# Con: stderr and stdout order is not preserved in the cat merge for notification.
# Reference: https://stackoverflow.com/a/692407/265508
eval "$cmd" > >(tee -a $file_stdout) 2> >(tee -a $file_stderr >&2)


ecode=$?
#ecode=${PIPESTATUS[0]}

#test $ecode -eq 0 || terminal-notifier -title "$cmd" < $file_stdout
test $ecode -eq 0 || cat $file_stderr $file_stdout | terminal-notifier -title "$cmd"

#rm $file_stdout $file_stderr
exit $ecode