#!/bin/bash


set -e

{ # failed download protection


cat > /etc/apt/sources.list <<EOF
deb http://mirror.hetzner.de/debian/packages buster           main contrib non-free
deb http://mirror.hetzner.de/debian/packages buster-updates   main contrib non-free
deb http://mirror.hetzner.de/debian/packages buster-backports main contrib non-free
deb http://mirror.hetzner.de/debian/security buster/updates main contrib non-free
EOF
apt update


echo "Install important system tools."
apt install -y htop ne iotop curl wget zsh figlet iptraf borgbackup systemd-cron apticron logwatch unattended-upgrades


echo "Use zsh!"
wget -q -O /root/.zshrc http://git.grml.org/f/grml-etc-core/etc/zsh/zshrc
cat >>/root/.zshrc << EOF
export LS_COLORS="*=00;37:rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:"
RED="$(tput setaf 1)"
ORANGE="$(tput setaf 3)"
BLUE="$(tput setaf 4)"
BLACK="$(tput sgr0)"
colorls() {
    /bin/ls -lh --color=yes $@ | sed -e "s/ \([0-9,.]\+K\) / ${BLUE}\1${BLACK} /g" -e "s/ \([0-9.,]\+G\) / ${RED}\1${BLACK} /g" -e "s/ \([0-9.,]\+M\) / ${ORANGE}\1${BLACK} /g"
}
alias ls='command ls -h --color=auto'
alias l='colorls'
alias ll='colorls -A'
EOF
chsh -s /bin/zsh


echo "Setup hostname."
( exec ne /etc/hostname /etc/hosts )
hostname -F /etc/hostname


echo "Nice motd."
figlet `hostname -f | sed 's/\./ \. /g'` > /etc/motd

apt install -y ssmtp
( exec ne /etc/ssmtp/* )


echo "Disable unneeded getty"
for i in {4..6}; do
    systemctl stop getty@tty$i.service
    systemctl disable getty@tty$i.service
done

echo "setup systembackup"
if [ ! -f /root/.ssh/id_rsa ]; then
ssh-keygen
fi
cat /root/.ssh/id_rsa.pub
read -n 1 -p "Create backup account now" unused

wget -q -O /usr/local/sbin/systembackup https://code.camijo.de/gmueller/server-scripts/raw/master/systembackup
chmod +x /usr/local/sbin/systembackup
if [ ! -f /etc/systembackup.conf ]; then
PASSWD=`< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-32}`
cat >>/etc/systembackup.conf <<EOF
REPOSITORY=ssh://borg-@backup.camijo.de/~/repo
PASSPHRASE=$PASSWD
MYSQL=no
EOF
fi
( exec ne /etc/systembackup.conf )

if [ ! -f /etc/cron.d/systembackup ]; then
cat >>/etc/cron.d/systembackup <<EOF
18 */4 * * * root /usr/local/sbin/systembackup
EOF
fi
( exec ne /etc/cron.d/systembackup )

source /etc/systembackup.conf
BORG_PASSPHRASE=$PASSPHRASE borg init $REPOSITORY

}