#!/bin/bash

set -eu

LIVE_HOSTNAME=debian
LIVE_USERNAME=contestant
LIVE_USER_FULLNAME="Contestant"

# Set hostname.
echo "${LIVE_HOSTNAME}" > /etc/hostname
hostname "${LIVE_HOSTNAME}"

# Create hosts file.
cat > /etc/hosts <<EOF
127.0.0.1       localhost ${LIVE_HOSTNAME}
::1             localhost ip6-localhost ip6-loopback
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters
EOF

# Create ssh host key.
ssh-keygen -q -f /etc/ssh/ssh_host_ed25519_key -N "" -t ed25519

# Create user.
adduser --disabled-password --gecos "$LIVE_USER_FULLNAME" "$LIVE_USERNAME"

# Enable auto login.
sed -i \
  -e "s/^[# ]*AutomaticLoginEnable *=.*/AutomaticLoginEnable = true/g" \
  -e "s/^[# ]*AutomaticLogin *=.*/AutomaticLogin = $LIVE_USERNAME/g" \
  -e "s/^[# ]*TimedLoginEnable *=.*/TimedLoginEnable = true/g" \
  -e "s/^[# ]*TimedLogin *=.*/TimedLogin = $LIVE_USERNAME/g" \
  -e "s/^[# ]*TimedLoginDelay *=.*/TimedLoginDelay = 5/g" \
  /etc/gdm3/daemon.conf