#!/bin/bash
clear
echo "#################################################################################################"
echo "#################################################################################################"
echo "## ha-lizard uninstaller - removes ha-lizard, mail and sendmail (if chosen)                    ##"
echo "##                                                                                             ##"
echo "#################################################################################################"
echo "#################################################################################################"

############################
# Make sure this is an XCP
# or XenServer host
# before continuing
############################
RELEASE=`cat /etc/redhat-release`
if [ $? != "0" ]
then
	RELEASE=UNKNOWN
fi

if [[ $RELEASE == XCP* ]] || [[ $RELEASE == XenServer* ]]
then
	echo "Host relese version = $RELEASE"
else
        echo "This host release ($RELEASE) not detected as an XCP or XenServer host"
        echo "continue anyway? <CTRL + C> to exit OR <Enter> to continue"
        read n1
fi

if [ "$1" != "--auto" ]
then
	echo "Removing ha-lizard global pool parameters. This will remove ALL global params stored in xapi database"
	echo "Enter <yes or no>"
	read REMOVE_GLOBALS
fi

if [ "$REMOVE_GLOBALS" = "yes"  -o "$1" = "--auto" ]
then
	/etc/ha-lizard/scripts/ha-cfg remove
else
	echo "Skipping removal of global parameters"
fi

if [ "$1" != "--auto" ]
then
	echo "Would you like to keep a copy of the ha-lizard configuration file in /tmp? <yes or no>"
	read KEEP_CONFIG
fi

if [ "$KEEP_CONFIG" = "yes"  -o "$1" = "--auto" ]
then
	cp /etc/ha-lizard/ha-lizard.conf /tmp
	if [ $? = "0" ]
	then
		echo "Configuration file saved in /tmp"
	fi
fi

if [ "$1" != "--auto" ]
then
	echo "Removing all ha-lizard files and application. Continue? <yes or no>"
	read REMOVE
fi
if [ "$REMOVE" = "yes"  -o "$1" = "--auto" ]
then
	chkconfig --del ha-lizard
	chkconfig --del ha-lizard-watchdog
	service ha-lizard stop -w
	rm -f /bin/ha-cfg
	rm -rf /etc/ha-lizard && rm -f /etc/init.d/ha-lizard && rm -f /etc/init.d/ha-lizard-watchdog && rm -f /etc/bash_completion.d/ha-cfg
	if [ $? = 0 ] 
	then
		echo "ha-lizard successfully removed"
	fi
fi

if [ "$1" != "--auto" ]
then
	echo "Remove ha-lizard fields <autopromote_uuid and ha-lizard-enabled>  from pool database"
	echo "This will remove global parameters stored in xapi database. Skip this step"
	echo "if ha-lizard is still running on other hosts in the pool. Enter <yes or no>"
	read REMOVE_FIELDS
fi
if [ "$REMOVE_FIELDS" = "yes"  -o "$1" = "--auto" ]
then
	POOL_UUID=`xe pool-list --minimal`
	xe pool-param-remove uuid=$POOL_UUID param-name=other-config param-key=autopromote_uuid 2>/dev/null
	if [ "$?" = "0" ]
	then
		echo "Successfully removed field: autopromote_uuid from database"
	else
		echo "Skipping removal of field: autopromote_uuid from database"
	fi
	xe pool-param-remove uuid=$POOL_UUID param-name=other-config param-key=XenCenter.CustomFields.ha-lizard-enabled 2>/dev/null
	if [ "$?" = "0" ]
	then
        	echo "Successfully removed field: XenCenter.CustomFields.ha-lizard-enabled from database"
	else
        	echo "Skipping removal of field: XenCenter.CustomFields.ha-lizard-enabled from database"
	fi
fi
echo "Finished"