#!/bin/bash

function wait_for {
# param 1: hour to wait for
echo "wait_for $1"
	while [ $1 -ne $(date +%H) ]
	do
		sleep 100
	done
}

function process_hour {
# param 1: hour to process
echo "process_hour $1"
	if [ -d $base_dir/$1 ]
	then
		for file in $(ls $base_dir/$1)
		do
			$base_dir/$1/$file
		done
	fi
}

# default processing
hour=$(date +%H)
base_dir=/etc/cron.d

# override current date, if 1st param is set
if [ $# -ge 1 ]
then
	hour=$1
fi
hour=${hour#0}

# override default dir, if 2st param is set
if [ $# -ge 2 ]
then
	base_dir=$2
fi

# program

#spawn cyclic jobs
if [ -d $base_dir/periodic ]
then
	for file in $(ls $base_dir/periodic)
	do
		$base_dir/periodic/$file &
	done
fi

# daily loop
while true
do
	process_hour $hour
	
	hour=$(expr $hour + 1)
	if [ $hour -eq 24 ]
	then
		hour=0
	fi
	
	wait_for $hour
done