#!/bin/bash

# Dumps site mySQL databases.
# Output files are suffixed with ".dump" and existing files are overwritten.

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


printUsage() {
	echo -e " "
	echo -e "Generates a dump backup file for the site's database."
	echo -e "Output files are named '<INSTALL>.dump' and are placed, by default, in the current directory."
	echo -e " "
	echo -e "Usage:"
	echo -e "$0 [-quiet] [-outputdir <output directory>] [-tobackupdir] ( <INSTALL> | all ) [install group root dir]"
	echo -e "where:"
	echo -e " "
	echo -e "-quiet"
	echo -e "\tLimits output"
	echo -e " "
	echo -e "-outputdir <output directory>"
	echo -e "\tSpecifies the directory where output is placed."
	echo -e "\tCannot be specified with '-tobackupdir'."
	echo -e "-tobackupdir"
	echo -e "\tSpecifies that the output for each site will be placed in that site's 'backup' directory."
	echo -e "\tCannot be specified with '-outputdir'."
	echo -e " "
	outputInstallGroupUsage foo
	echo -e " "
}


#########

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

# Handle flags
while (true); do
	case "${1}" in
	-quiet )
		pQuiet="${1}"
		shift
		;;

	-outputdir )
		# Can only specify one output directive
		if [ -n "${pOutputDir}" -o -n "${pToBackupDir}" ]; then
			echo -e "** Can only specify one of '-outputdir' and '-tobackupdir'.  Aborting.\n"
			exit 1
		fi
		
		pOutputDir="${1}"
		targetDir="${2}"
		shift; shift

		# Validate the output directory
		if [ ! -d "${targetDir}" ]; then
			echo -e "** Specified output directory '${targetDir}' does not exist.  Aborting.\n"
			exit 1
		fi
		;;

	-tobackupdir )
		# Can only specify one output directive
		if [ -n "${pOutputDir}" -o -n "${pToBackupDir}" ]; then
			echo -e "** Can only specify one of '-outputdir' and '-tobackupdir'.  Aborting.\n"
			exit 1
		fi

		pToBackupDir="${1}"
		shift
		;;

	* )
		break
		;;
	esac
done
if [ -z "${pQuiet}" ]; then
	echo " "
fi

# Check parameters
if [ $# -lt 1 -o $# -gt 2 ]; then
	echo -e "Invalid number of parameters specified.  Aborting\n"
	printUsage
	exit 1
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."
		exit 1
	fi
fi

# process site(s)
for site in ${pInstall}; do
	if [ -z "${pQuiet}" ]; then
		if [ "${site}" != "${pInstall}" ]; then
			echo -en "Processing site '${site}'.... "
		fi
	fi

	# Determine target directory if not already set
	holdTargetDir="${targetDir}"
	if [ -z "${holdTargetDir}" ]; then
		holdTargetDir="."
		if [ -n "${pToBackupDir}" ]; then
			holdTargetDir="`getBackupDir "${site}" "${pRootDir}"`"
		fi		
	fi

	# Get database auth information
	dbName="`getDBName "${site}" "${pRootDir}"`"
	dbAuth="`getDBAuthString "${site}" "${pRootDir}"`"

	# perform database backup/dump
	${MYSQLDUMP} ${dbAuth} ${MYSQLDUMP_FLAGS} ${dbName} > "${holdTargetDir}/${site}.dump"

	if [ -z "${pQuiet}" ]; then
		if [ "${site}" != "${pInstall}" ]; then
			echo -e "Done."
		fi
	fi
done

# Done
if [ -z "${pQuiet}" ]; then
	if [ "${site}" != "${pInstall}" ]; then
		echo " "
	fi
	echo -e "** Done."
fi