#!/usr/bin/bash
PATH=/usr/bin:/bin:/usr/sbin:/sbin

source /etc/mf-backup

function check_for_error() {
	[[ $1 -ne 0 ]] && GLOBAL_ERROR=$1
}

function backup_nextcloud() {
	local GLOBAL_ERROR=0
	/usr/local/bin/occ maintenance:mode --on && \
		mysqldump -u root --all-databases > /var/lib/mysql-backup/dump.sql && \
		kopia $KOPIA_OPTS snapshot create /var/lib/mysql-backup && \
		kopia $KOPIA_OPTS snapshot create /data/nextcloud && \
		/usr/local/bin/occ maintenance:mode --off
	check_for_error $?
	return $GLOBAL_ERROR
}

function backup_mariadb() {
	local GLOBAL_ERROR=0
	mysqldump -u root --all-databases > /var/lib/mysql-backup/dump.sql 
	check_for_error $?
	echo "kopia snapshot create /var/lib/mysql-backup"
	kopia $KOPIA_OPTS snapshot create /var/lib/mysql-backup
	check_for_error $?
	return $GLOBAL_ERROR
}

function log() {
	echo "$1" >> $LOGFILE
}

# Check B2 keys
if [ -z "$DIRS_TO_BACKUP" ]; then
	echo "Missing DIRS_TO_BACKUP in /etc/mf-backup"
	exit 1
fi

LOGFILE=`mktemp`
GLOBAL_ERROR=0

## Backup NextCloud
if [[ $BACKUP_NEXTCLOUD =~ ^[yY]$ ]]; then
	log ""
	log "-------------------------------------------------------------"
	log "  KOPIA NEXTCLOUD BACKUP"
	log "-------------------------------------------------------------"
	log ""
	backup_nextclod >> $LOGFILE 2>&1
	check_for_error
fi

## Backup MariaDB
if [[ $BACKUP_MARIADB =~ ^[yY]$ ]]; then
	log ""
	log "-------------------------------------------------------------"
	log "  KOPIA MARIADB BACKUP"
	log "-------------------------------------------------------------"
	log ""
	backup_mariadb >> $LOGFILE 2>&1
	check_for_error
fi

## Backups
log ""
log "-------------------------------------------------------------"
log "  KOPIA STD FILESYSTEM SNAPSHOT "
log "  ${DIRS_TO_BACKUP}"
log "-------------------------------------------------------------"
log ""

for DIR in $DIRS_TO_BACKUP
do
	echo "kopia snapshot create $DIR" >> $LOGFILE
	kopia $KOPIA_OPTS snapshot create $DIR >> $LOGFILE 2>&1
	check_for_error $?	
done

## Mail log on error
if [[ $GLOBAL_ERROR -ne 0 ]]; then
	MSUBJ="${X_HOSTNAME} Backup Job Errors"
	mail -r $MAIL_FROM -s "$MSUBJ" $MAIL_TO < $LOGFILE
fi
rm $LOGFILE
exit 0