#!/usr/bin/env bash
set -e

usage() {
  echo "usage: ruby-package fetch PACKAGE" >&2
  exit 1
}

if [ -z "$1" ]; then
  usage
fi
package_name="${1}.$(ruby-package platform).rubypackage"

package_repo="${RUBY_PACKAGE_REPO%/}"
if [ -z "$ruby_package_repo" ]; then
  package_repo="https://github.com/downloads/sstephenson/ruby-packages"
fi

url="${package_repo}/${package_name}"
filename="${TMPDIR}/${package_name}.$$"

set +e
curl -Lfs "$url" > "$filename"
result="$?"
set -e

if [ "$result" -eq 22 ]; then
  exit 3
elif [ ! -f "$filename" ]; then
  exit 2
else
  echo "$filename"
fi