#!/bin/bash
# vim:set et ts=4 sw=4:

LOCKFILE=/org/wanna-build/triggers/lock

set -eE

cleanup() {
    rm -rf "$LOCKFILE"
}

if ! lockfile -0 -r0 "$LOCKFILE" 2>/dev/null
then
    # Process already running.
    exit 0
fi

# Got the lock.
trap cleanup ERR TERM HUP INT QUIT EXIT

# Do at least one run.
work=1
while [ $work -eq 1 ]
do
    # No further runs unless at least one signal is found.
    work=0
    find /org/wanna-build/signals -type f | while read signal
    do
        # Process it.
        work=1
        if [ "$(stat -c '%s' $signal)" -eq 0 ]
        then
            /org/wanna-build/triggers/trigger.$(basename $signal)
        else
            cat $signal | \
                (while read args
                 do
                     /org/wanna-build/triggers/trigger.$(basename $signal) $args
                 done)
        fi
        rm $signal
    done
done

exit 0