#!/bin/bash

goodbye()
{
	rm -rf $tmp
	[ "$1" ] && exit $1
}

log()
{
	echo $@
}

error()
{
	log $@
}

fatal()
{
	error $@
	goodbye 1
}

set_var()
{
	local var=$1
	shift
	eval local check=\$$var
	if [ -z "$check" ]; then
		eval $var="$@"
	fi
}

set_defaults()
{
	set_var modules `cd $dir; ls streamline-*.sh | sed 's/streamline-//; s/\.sh//; /^project$/ d'`
}

usage()
{
	cat <<- EOT | sed 's/^	*|//'
	|
	|  $myname [options] module ...
	|
	|        module(s) are the module to be executed, currently selected: $modules
	|
	|  options are
	|
	|	-h:         display this help message and exit sucessfully
	|
	EOT
	goodbye $1
}

# -------------- here we go

trap goodbye INT KILL EXIT

myname=`basename $0`
dir=`dirname $0`

eval set -- `getopt -- h "$@"`

while [ "$1" != -- ]; do
case $1 in
	-h)
		usage=0;;
	*)
		usage=1;;
esac
shift
done
shift

# modules="$@"

set_defaults

[ "$usage" ] && usage $usage

for m in $modules; do
	mod_script=$dir/streamline-$m.sh
	log running $mod_script status
	status=`$mod_script status`
	r=$?
	if [ "$r" != 0 ]; then
		fatal "running "$mod_script status" failed ($r)"
	fi
	case $status in
	not-implemented)
		log "module $m is not implemented, yet, ignoring"
		;;
	due)
		log "need to run module $m"
		;;
	*)
		fatal "unrecognized output from module $m"
		;;
	esac
done