#!/bin/bash

# Get the next version to be built off the queue

__dirname="$(CDPATH= cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "${__dirname}/_config.sh"
source "${__dirname}/_lock.sh"

if [ ! -f $queuefile ]; then
  exit 0
fi

acquire_lock "build_queue"
version_and_recipes="$(head -1 $queuefile)"
if [ "X$version_and_recipes" != "X" ]; then
  queuetmp="$(mktemp /tmp/queuefile.XXXX)"
  tail -n +2 $queuefile > $queuetmp
  mv $queuetmp $queuefile
fi
release_lock

if [ "X$version_and_recipes" != "X" ]; then
  echo "$version_and_recipes"
fi