#!/bin/bash

# Runs the cron tasks associated with one or all sites.
#
# Uses wget to run cron tasks.  wget must be installed.
#
# Outputs the result of the cron call to stdout.  
# Normally, drupal cron.php will output nothing so 
# this script should output nothing at this step.
# However, if the domain is not actually backed by 
# the drupal site, it could output real content.
# This output is supressed (along with other output)
# by specifying the -quiet script.

# include library file
. "`dirname ${0}`/drupalLibrary.sh"


CRON_SCRIPT="cron.php"
WGET_FLAGS="-O - -q"
WGET_QUIET_FLAGS="-O /dev/null -q"

printUsage() {
	echo -e " "
	echo -e "Runs the cron tasks associated with one or all sites..  (See script header for specifics.)"
	echo -e " "
	echo -e "Usage:"
	echo -e "$0 -quiet ( <INSTALL> | all ) [install group root dir]"
	echo -e "where:"
	echo -e " "
	echo -e "-quiet suppresses extra script output."
	echo -e " "
	outputInstallGroupUsage foo
	echo -e " "
}


#########

# Param handling
if [ $# -eq 0 ]; then
	printUsage
	exit 0
fi

# Handle flags
while (true); do
	case "${1}" in
	-quiet )
		pQuiet="-quiet"
		shift
		;;
	* )
		break
		;;
	esac
done
if [ -z "${pQuiet}" ]; then
	echo " "
fi

# process Group Root Dir
pRootDir="`getGroupRootDir "${2}"`"
errorStr="`validateGroupRootDir "${pRootDir}"`"
if [ -n "${errorStr}" ]; then
	echo -e "${errorStr}\n"
	printUsage
	exit 1
fi

pInstall="$1"
if [ "`toLower "${pInstall}"`" == "all" ]; then
	pInstall="`getSitesInGroupDir "${pRootDir}"`"
else
	# Validate the installation
	errorStr="`validateSite "${pInstall}" "${pRootDir}"`"
	if [ -n "${errorStr}" ]; then
		echo -e "** Error with specified install: ${errorStr}.  Aborting.\n"
		exit 1
	fi
fi

# Ensure wget is installed
wgetBinary="`which wget 2>/dev/null`"
if [ -z "${wgetBinary}" ]; then
	echo -e "** 'wget' not in path.  Aborting.\n"
	exit 1
fi

# Which flags to use?
wgetFlags="${WGET_FLAGS}"
if [ -n "${pQuiet}" ]; then
	wgetFlags="${WGET_QUIET_FLAGS}"
fi

# process
for site in ${pInstall}; do
	if [ -z "${pQuiet}" ]; then
		echo -n "Calling cron for site '${site}'.... "
	fi

	# if there exists one (and only one) alias, 
	# use the alias instead of the sitename
	# TODO put in a flag to supress this
	if [ `getInstallAliases "${site}" "${pRootDir}" | wc -l` -eq 1 ]; then
		site=`getInstallAliases "${site}" "${pRootDir}"`
	fi

	"${wgetBinary}" ${wgetFlags} "http://${site}/${CRON_SCRIPT}"


	if [ -z "${pQuiet}" ]; then
		echo "done."
	fi
done


# Done
if [ -z "${pQuiet}" ]; then
	echo -e "\n** Done."
fi