#!/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

IFS=.- read -r major_version minor_version patch_version _prerelease <<< "$version"
openssl_upper_bound="3.x.x"
# These releases include Ruby/OpenSSL 3.2.4, 3.3.3, and 4.0.2, respectively.
if (( (major_version == 3 && minor_version == 3 && patch_version >= 12) ||
      (major_version == 3 && minor_version == 4 && patch_version >= 10) ||
      (major_version == 4 && (minor_version >= 1 || patch_version >= 6)) ||
      major_version > 4 )); then
  openssl_upper_bound="4.x.x"
fi

if [ "$major_version" -ge 4 ]; then
  needs_openssl="needs_openssl:1.1.1-${openssl_upper_bound}"
else
  needs_openssl="needs_openssl:1.0.2-${openssl_upper_bound}"
fi

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