Backup script i made in bash, uses bash to config the bash script, dirty subarray trick

script:
#!/usr/local/bin/bash
#settings
DATE=$(date "+%m_%d_%y_%H:%M")
source ~/.backuprc
set -euf -o pipefail

help="$0 {zfs|rsync} {job}"

backup_rsync( )
{
tobed=$(eval echo \${"${rsync[$2]}"["source"]})
dest=$(eval echo \${"${rsync[$2]}"["destination"]})
location=$(eval echo \${"${rsync[$2]}"["location"]})
excludes=$(eval echo \${"${rsync[$2]}"["exclude_file"]})
basicflags=$(eval echo \${"${rsync[$2]}"["flags"]})
if [ "$location" == "local" ]
then
destination=${locations["$2"]}
flags="$basicflags"
else
if [ "$location" == "ssh" ]
then
sshinfo=$(eval echo \${"${rsync[$2]}"["ssh"]})
server=$(eval echo \${"$sshinfo"["user_server"]})
identfile=$(eval echo \${"$sshinfo"["identity"]})
sshport=$(eval echo \${"$sshinfo"["port"]})
dest="$server:$dest"
flags="$basicflags -e 'ssh -i $identfile -p $sshport'"
fi
fi
if [[ $excludes != 0 ]]
then
flags="$flags --exclude-from=$excludes"
fi
if [[ $(eval echo \${"${rsync[$2]}"["delete"]}) != 0 ]]
then
flags="$flags --delete"
fi
eval "rsync $flags $tobed $dest"
}

backup_zfs( )
{
tobed=$(eval echo \${"${zfs[$2]}"["source"]})
destination=$(eval echo \${"${zfs[$2]}"["destination"]})
location=$(eval echo \${"${zfs[$2]}"["location"]})
recflags=$(eval echo \${"${zfs[$2]}"["recvflags"]})
destroyflags=$(eval echo \${"${zfs[$2]}"["destroyflags"]})
sendflags=$(eval echo \${"${zfs[$2]}"["sendflags"]})
snapflags=$(eval echo \${"${zfs[$2]}"["snapflags"]})
incremental=$(eval echo \${"${zfs[$2]}"["incremental"]})
echo $incremental
checkdest="zfs list $destination"
if [ "$location" == "local" ]
then
receiver="zfs receive $recflags"
destroyer="zfs destroy $destroyflags"
else
if [ "$location" == "ssh" ]
then
sshinfo=$(eval echo \${"${zfs[$2]}"["ssh"]})
identfile=$(eval echo \${"$sshinfo"["identity"]})
userserver=$(eval echo \${"$sshinfo"["user_server"]})
sshport=$(eval echo \${"$sshinfo"["port"]})
sshline="ssh -t $userserver -i $identfile -p $sshport"
receiver="$sshline zfs receive $recflags"
destroyer="$sshline zfs destroy $destroyflags"
checkdest="$sshline $checkdest"
fi
fi
eval "zfs snapshot $snapflags $tobed@$DATE"

if [ "$incremental" == "yes" ]
then
if eval "$checkdest" && eval "ls ~/.$2.zfs.lastsnap"
then
lastsnap=$(cat ~/."$2".zfs.lastsnap)
sendflags="$sendflags -i $tobed$lastsnap"
#echo $sendflags
fi
echo "@$DATE" > ~/."$2".zfs.lastsnap
else
eval "$destroyer $destination"
fi
sleep 5
eval "zfs send $sendflags $tobed@$DATE | $receiver $destination"
}

if [ $# == 0 ]
then
echo "$help"
exit
else
case $1 in
rsync)
backup_rsync "$@"
exit
;;
zfs)
backup_zfs "$@"
exit
;;
*)
echo "$help"
exit
;;
esac
fi

The "config"
DELETE=1
HOMEDIR=/usr/home/mouse/
HOMEZFS="mouser/usr/home/mouse"
HOMEEXCLUDE="/usr/home/mouse/.rsync_excludes" GLOBALEXCLUDE="/usr/home/mouse/.rsync_global_excludes" DEFAULTSERVER="192.168.1.138"
DEFAULTUSER="mouse"

declare -A home_ssh=(
["user_server"]="$DEFAULTUSER@$DEFAULTSERVER"
["port"]="1478"
["identity"]="~/.ssh/id_rsa_home"
)

declare -A ssh=(
["home"]=home_ssh
)

declare -A full_rsync=(
["delete"]=0
["source"]="/"
["flags"]="-avP"
["destination"]="/suplbup/laptop/"
["exclude_file"]=$GLOBALEXCLUDE
["location"]="local"
)

declare -A fullssh_rsync=(
["delete"]=1
["source"]="/"
["flags"]="-avP"
["destination"]="/massdata/laptop/"
["exclude_file"]=$GLOBALEXCLUDE
["location"]="ssh"
["ssh"]=home_ssh
)

declare -A home_rsync=(
["delete"]=1
["source"]=$HOMEDIR
["flags"]="-avP"
["destination"]="/suplbup/laptop-home/"
["exclude_file"]=$HOMEEXCLUDE
["location"]="local"
)

declare -A music_rsync=(
["delete"]=0
["source"]="/usr/home/mouse/music/"
["flags"]="-avP"
["destination"]="/home/mouse/Music/"
["exclude_file"]=$HOMEEXCLUDE
["location"]="ssh"
["ssh"]=home_ssh
)
declare -A freenet_rsync=(
["delete"]=0
["source"]="/usr/home/mouse/Freenet/"
["flags"]="-avP"
["destination"]="/home/mouse/Freenet/"
["exclude_file"]=$HOMEEXCLUDE
["location"]="ssh"
["ssh"]=home_ssh
)

declare -A homessh_rsync=(
["delete"]=1
["source"]=$HOMEDIR
["flags"]="-avP"
["destination"]="/massdata/laptop-home/"
["exclude_file"]=$HOMEEXCLUDE
["location"]="ssh"
["ssh"]=home_ssh
)

declare -A homessh_zfs=(
["source"]=$HOMEZFS
["recvflags"]=""
["snapflags"]="-r"
["destroyflags"]="-r"
["sendflags"]="-v -R"
["destination"]="imagine/test"
["location"]="ssh"
["incremental"]="yes"
["ssh"]=home_ssh
)

declare -A home_zfs=(
["source"]=$HOMEZFS
["recvflags"]=""
["snapflags"]="-r"
["destroyflags"]="-r"
["sendflags"]="-v -R"
["destination"]="suplbup/rescuehome"
["location"]="local"
["incremental"]="yes"
)

declare -A full_zfs=(
["source"]=mouser
["recvflags"]=""
["snapflags"]="-r"
["destroyflags"]="-r"
["sendflags"]="-v -R"
["destination"]="suplbup/rescue"
["location"]="local"
["incremental"]="yes"
)
declare -A fullssh_zfs=(
["source"]=$HOMEZFS
["recvflags"]=""
["snapflags"]="-r"
["destroyflags"]="-r"
["sendflags"]="-v -R"
["destination"]="imagine/test"
["location"]="ssh"
["incremental"]="yes"
["ssh"]=home_ssh
)

declare -A zfs=(
["full"]=full_zfs
["full_ssh"]=fullssh_zfs
["home"]=home_zfs
["home_ssh"]=homessh_zfs
)

declare -A rsync=(
["music"]=music_rsync
["freenet"]=freenet_rsync
["full"]=full_rsync
["full_ssh"]=fullssh_rsync
["home"]=home_rsync
["home_ssh"]=homessh_rsync
)

--- Mystic BBS v1.12 A45 2020/02/18 (Windows/32)
* Origin: Agency BBS | Dunedin, New Zealand | agency.bbs.nz (3:770/100)