#! /bin/sh
set -euf

if test -e nag.hosts.ls; then
  echo "nag seems to run already... if not, then delete $workdir/nag.*, please"
  exit 23
fi

trap 'rm -f nag.hosts.ls nag.services.ls nag.patch' EXIT INT QUIT

if ! test -d nag.hosts; then
    git clone "$hosts_repo" nag.hosts
else
    (cd nag.hosts && git pull) | grep -v 'Already up-to-date.'
fi

if ! test -d nag.services; then
    git clone "$services_repo" nag.services
else
    (cd nag.services && git pull) | grep -v 'Already up-to-date.'
fi


(cd nag.hosts && ls | sort) > nag.hosts.ls
(cd nag.services && ls | sort) > nag.services.ls

diff -u nag.hosts.ls nag.services.ls > nag.patch || :

missing_services=$(sed -n '1d;2d;s/^-\(.*\)/\1/p' nag.patch | tr '\n' ' ')
obsolete_services=$(sed -n '1d;2d;s/^+\(.*\)/\1/p' nag.patch | tr '\n' ' ')


#
# output
#
if test -n "$missing_services"; then
  echo missing services: $missing_services
fi
if test -n "$obsolete_services"; then
  echo obsolete services: $obsolete_services
fi