# GRAVITY SYNC BY VMSTAN #####################
# gs-smart.sh ################################

# For documentation or downloading updates visit https://github.com/vmstan/gravity-sync
# This code is called from the main gravity-sync.sh file and should not execute directly!

## Smart Task
function task_smart {
    TASKTYPE='SMART'
	MESSAGE="${MESSAGE}: ${TASKTYPE} Requested"
	echo_good

    show_target
    validate_gs_folders
    validate_ph_folders
    validate_sqlite3
    validate_os_sshpass

    smart_gs
    exit
}

## Smart Sync Function
function smart_gs {
	MESSAGE="Starting ${TASKTYPE} Analysis"
	echo_info
	
	previous_md5
	md5_compare
	backup_settime

	PRIDBCHANGE="0"
	SECDBCHANGE="0"
	PRICLCHANGE="0"
	SECCLCHANGE="0"
	
	if [ "${primaryDBMD5}" != "${last_primaryDBMD5}" ]
	then
		PRIDBCHANGE="1"
	fi
	
	if [ "${secondDBMD5}" != "${last_secondDBMD5}" ]
	then
		SECDBCHANGE="1"
	fi

	if [ "${PRIDBCHANGE}" == "${SECDBCHANGE}" ]
	then
		if [ "${PRIDBCHANGE}" != "0" ]
		then
			MESSAGE="Both ${GRAVITY_FI} Have Changed"
			echo_warn

			PRIDBDATE=$(${SSHPASSWORD} ${SSH_CMD} -p ${SSH_PORT} -i "$HOME/${SSH_PKIF}" ${REMOTE_USER}@${REMOTE_HOST} "stat -c %Y ${RIHOLE_DIR}/${GRAVITY_FI}")
			SECDBDATE=$(stat -c %Y ${PIHOLE_DIR}/${GRAVITY_FI})

				if (( "$PRIDBDATE" >= "$SECDBDATE" ))
				then
					MESSAGE="Primary ${GRAVITY_FI} Last Changed"
					echo_warn

					pull_gs_grav
					PULLRESTART="1"
				else
					MESSAGE="Secondary ${GRAVITY_FI} Last Changed"
					echo_warn

					push_gs_grav
					PUSHRESTART="1"
				fi
		fi
	else
		if [ "${PRIDBCHANGE}" != "0" ]
		then
			pull_gs_grav
			PULLRESTART="1"
		elif [ "${SECDBCHANGE}" != "0" ]
		then
			push_gs_grav
			PUSHRESTART="1"
		fi
	fi

	if [ "${primaryCLMD5}" != "${last_primaryCLMD5}" ]
	then
		PRICLCHANGE="1"
	fi
	
	if [ "${secondCLMD5}" != "${last_secondCLMD5}" ]
	then
		SECCLCHANGE="1"
	fi

	if [ "$SKIP_CUSTOM" != '1' ]
	then

		if [ -f "${PIHOLE_DIR}/${CUSTOM_DNS}" ]
		then

			if [ "${PRICLCHANGE}" == "${SECCLCHANGE}" ]
			then
				if [ "${PRICLCHANGE}" != "0" ]
				then
					MESSAGE="Both ${CUSTOM_DNS} Have Changed"
					echo_warn

					PRICLDATE=$(${SSHPASSWORD} ${SSH_CMD} -p ${SSH_PORT} -i "$HOME/${SSH_PKIF}" ${REMOTE_USER}@${REMOTE_HOST} "stat -c %Y ${RIHOLE_DIR}/${CUSTOM_DNS}")
					SECCLDATE=$(stat -c %Y ${PIHOLE_DIR}/${CUSTOM_DNS})

						if (( "$PRICLDATE" >= "$SECCLDATE" ))
						then
							MESSAGE="Primary ${CUSTOM_DNS} Last Changed"
							echo_warn

							pull_gs_cust
							PULLRESTART="1"
						else
							MESSAGE="Secondary ${CUSTOM_DNS} Last Changed"
							echo_warn

							push_gs_cust
							PUSHRESTART="1"
						fi
				fi
			else
				if [ "${PRICLCHANGE}" != "0" ]
				then
					pull_gs_cust
					PULLRESTART="1"
				elif [ "${SECCLCHANGE}" != "0" ]
				then
					push_gs_cust
					PUSHRESTART="1"
				fi
			fi
		else
			pull_gs_cust
			PULLRESTART="1"
		fi
	fi

	if [ "$PULLRESTART" == "1" ]
	then
		pull_gs_reload
	fi

	if [ "$PUSHRESTART" == "1" ]
	then
		push_gs_reload
	fi

	md5_recheck

	logs_export
	exit_withchange
}