#!/bin/bash

# This script sets the DB connection parameters in the
# site settings file (settings.php).
#
# The script will operate on any parameters supplied on
# the command line.  If none are supplied, the script will
# operate in interactive mode, prompting for all parameters.

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


printUsage() {
	echo -e " "
	echo -e "Sets database connection parameters into a site's settings file."
	echo -e "Operates in interactive mode if no parameters defined on command line."
	echo -e " "
	echo -e "Usage:"
	echo -e "$0 [-noconfirm] [-dbhost <hostname>] [-dbname <db name>] [-user <db username>] [-pass <db password>] <INSTALL> [install group root dir]"
	echo -e "where:"
	echo -e " "
	echo -e "-noconfirm"
	echo -e "\tSupresses the confirmation request. (ignored in interactive mode)"
	echo -e " "
	echo -e "<hostname> - The host on which the site's database runs."
	echo -e "<db name> - The name of this site's database."
	echo -e "<db username> - The database username."
	echo -e "<db password> - The password associated with the username."
	echo -e " "
	outputGroupRootDirUsage
	echo -e " "
}


#########

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

# Handle flags
pInteractive="yes"
pUser=""; pPass=""; pDBHost=""; pDBName="";
while (true); do
	case "${1}" in
	-user | -pass | -dbhost | -dbname )
		if [ $# -lt 3 ]; then
			echo -e "** No argument supplied for '${1}' parameter.  Aborting.\n"
			printUsage
			exit 1
		fi		
		pInteractive=""
		case "${1}" in
		-dbhost )
			pDBHost="${2}"			
			;;
		-dbname )
			pDBName="${2}"			
			;;
		-user )
			pUser="${2}"			
			;;
		-pass )
			pPass="${2}"			
			;;
		esac
		shift; shift
		;;
	-noconfirm )
		pNoConfirm="-noconfirm";
		shift;
		;;
	* )
		break
		;;
	esac
done

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

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

#########

if [ -n "${pInteractive}" ]; then 
	# Running in interactive mode

	# Get default information from site.
	defaultDBHost="`getDBHost "${pInstall}" "${pRootDir}"`"
	defaultDBName="`getDBName "${pInstall}" "${pRootDir}"`"
	defaultUser="`getDBUsername "${pInstall}" "${pRootDir}"`"
	defaultPass="`getDBPassword "${pInstall}" "${pRootDir}"`"

	# Run thru interactive questions
	read -p "Database hostname [${defaultDBHost}]: " pDBHost
	read -p "Database name [${defaultDBName}]: " pDBName
	read -p "Database username [${defaultUser}]: " pUser
	read -p "Database password [${defaultPass}]: " pPass
	
	if [ -z "${pDBHost}" -a -z "${pDBName}" -a -z "${pUser}" -a -z "${pPass}" ]; then
		echo -e "\n** No settings changes made."
		exit 0
	fi
fi

# Confirm
if [ -z "${pNoConfirm}" ]; then
	if [ -n "${pInteractive}" ]; then 
		echo " "
	fi

	echo "Seting the following DB connection parameters on site '${pInstall}':"
	if [ -n "${pDBHost}" ]; then
		echo -e "\tDB host: '${pDBHost}'"
	fi 
	if [ -n "${pDBName}" ]; then
		echo -e "\tDB name: '${pDBName}'"
	fi 
	if [ -n "${pUser}" ]; then
		echo -e "\tusername: '${pUser}'"
	fi 
	if [ -n "${pPass}" ]; then
		echo -e "\tpassword: '${pPass}'"
	fi 
	echo "Press <return> to continue, or ^C to quit..."
	read
fi

# Make changes
if [ -n "${pDBHost}" ]; then
	setDBHost "${pInstall}" "${pRootDir}" "${pDBHost}"
fi 
if [ -n "${pDBName}" ]; then
	setDBName "${pInstall}" "${pRootDir}" "${pDBName}"
fi 	
if [ -n "${pUser}" ]; then
	setDBUsername "${pInstall}" "${pRootDir}" "${pUser}"
fi 
if [ -n "${pPass}" ]; then
	setDBPassword "${pInstall}" "${pRootDir}" "${pPass}"
fi 

# done
echo -e "\n** Done."