#!/bin/bash

set -Eeu -o pipefail
shopt -s lastpipe

trap 'exit 3' ERR

ok=()
error=()

sudo asterisk -rx 'pjsip show registrations' \
  | sed '1,4d'                               \
  | head -n2                                 \
  | while read -r uri auth status
do
  msg="${auth} is ${status,,}"
  if [ "$status" = Registered ]; then
    ok+=("$msg")
  else
    err+=("$msg")
  fi
done

if (( ${#error[@]} )); then
  echo 'trunk is not registered!'
  RC=2
else
  echo 'all trunks registered'
  RC=0
fi

if (( ${#error[@]} )); then
  printf 'CRIT: %s\n' "${error[@]}"
fi

if (( ${#ok[@]} )); then
  printf 'OK: %s\n' "${ok[@]}"
fi

exit $RC