#!/bin/bash

# https://buildkite.com/docs/guides/writing-build-scripts
set -eo pipefail

# default to a known perl version of not specified
BUILDKITE_PERLBREW_VERSION=${BUILDKITE_PERLBREW_VERSION:-perl-5.22.2};

# make sure we have perlbrew and cpanm
curl -kL http://install.perlbrew.pl |bash
source ~/perl5/perlbrew/etc/bashrc

# just in case it asks us if we're sure we want to continue
yes Y |perlbrew install-cpanm ||true

perlbrew available

# install something similar to the version in perl-nap (as of Jul 2015)
## this can take as long as 20-30 minutes; leave the window where you
## can see it but get on with something else for a while
## you only need to do this once (per version of perl you want available to you)

# only try to install a version if we don't already have it
## http://stackoverflow.com/questions/25843523/perlbrew-list-and-wrong-version-number
if [ ! -f ~/perl5/perlbrew/perls/${BUILDKITE_PERLBREW_VERSION}/.version ]; then
    perlbrew install ${BUILDKITE_PERLBREW_VERSION}
fi

# make sure it's our default
perlbrew switch ${BUILDKITE_PERLBREW_VERSION}