#!/bin/bash

if [ -z "$1" ]; then
  echo "$0 <host>"
  exit 1
fi

short="$1"
ssh_host=$(ssh -G "$short" | grep "^hostname " | awk '{ print($2) }' )
ssh_port=$(ssh -G "$short" | grep "^port " | awk '{ print($2) }' )
known_hosts_file=$(ssh -G "$short" | grep "^userknownhostsfile " | awk '{ print($2) }' )
known_hosts_file=${known_hosts_file/#\~/$HOME}

declare -a names
names+=("$short")
names+=("$ssh_host")
names+=("$ssh_host:$ssh_port")
names+=("[$ssh_host]:$ssh_port")

cd "${BASH_SOURCE%/*}"
source common/utils.sh
ansible_variable__get host_name "$short" || exit 1
names+=("$host_name")
ansible_variable__get host_domain "$short" > /dev/null 2>&1 && names+=("$host_name.$host_domain")

for name in ${names[@]} ; do
  ssh-keygen -f "$known_hosts_file" -R "$name"
done

exit 0