# frozen_string_literal: true
#
# Author:: Adam Jacob (<adam@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

Ohai.plugin(:Ruby) do
  provides "languages/ruby"
  depends "languages"

  def run_ruby(command)
    cmd = "ruby -e \"require 'rbconfig'; #{command}\""
    so = shell_out(cmd)
    so.stdout.strip
  end

  collect_data do
    languages[:ruby] = Mash.new

    values = {
      platform: "RUBY_PLATFORM",
      version: "RUBY_VERSION",
      release_date: "RUBY_RELEASE_DATE",
      target: "RbConfig::CONFIG['target']",
      target_cpu: "RbConfig::CONFIG['target_cpu']",
      target_vendor: "RbConfig::CONFIG['target_vendor']",
      target_os: "RbConfig::CONFIG['target_os']",
      host: "RbConfig::CONFIG['host']",
      host_cpu: "RbConfig::CONFIG['host_cpu']",
      host_os: "RbConfig::CONFIG['host_os']",
      host_vendor: "RbConfig::CONFIG['host_vendor']",
      bin_dir: "RbConfig::CONFIG['bindir']",
      ruby_bin: "::File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])",
      gem_bin: "::File.join(RbConfig::CONFIG['bindir'], ::Gem.default_exec_format % 'gem')",
      gems_dir: "::Gem.dir",
    }

    # Create a query string from above hash
    env_string = []
    values.each_key do |v|
      env_string << "#{v}=\#{#{values[v]}},"
    end

    # Query the system ruby
    result = run_ruby "require 'rubygems'; puts %Q(#{env_string.join})"

    # Parse results to plugin hash
    result.split(",").each do |entry|
      key, value = entry.split("=")
      languages[:ruby][key.to_sym] = value || ""
    end
  end
end