#!/usr/bin/env bash

set -e
set -o pipefail

if [ $# -ne 3 ]; then
  echo "usage: $0 VERSION OPENSSL_VERSION RELEASE_DIRECTORY"
  exit 1
fi

version="$1"
openssl_version="$2"
release_directory="$3"
file="share/ruby-build/${version}"

basename="ruby-${version}.tar.gz"
openssl_basename="openssl-${openssl_version}.tar.gz"
major_minor_version=$(echo ${version} | cut -d '.' -f 1,2)
url="https://cache.ruby-lang.org/pub/ruby/${major_minor_version}/${basename}"
if command -v sha256sum >/dev/null; then
  sha256=$(sha256sum "$release_directory/$basename" | cut -d ' ' -f 1)
elif command -v shasum >/dev/null; then
  sha256=$(shasum -a 256 "$release_directory/$basename" | cut -d ' ' -f 1)
else
  echo "$0 requires sha256sum or shasum to be installed on the system."
  exit 1
fi

openssl_url="https://github.com/openssl/openssl/releases/download/openssl-${openssl_version}/openssl-${openssl_version}.tar.gz"
if command -v sha256sum >/dev/null; then
  openssl_sha256=$(sha256sum "$release_directory/$openssl_basename" | cut -d ' ' -f 1)
elif command -v shasum >/dev/null; then
  openssl_sha256=$(shasum -a 256 "$release_directory/$openssl_basename" | cut -d ' ' -f 1)
else
  echo "$0 requires sha256sum or shasum to be installed on the system."
  exit 1
fi

cat > "$file" <<EOS
install_package "openssl-${openssl_version}" "${openssl_url}#${openssl_sha256}" openssl --if needs_openssl:1.0.2-3.x.x
install_package "ruby-${version}" "${url}#${sha256}" enable_shared standard
EOS