# encoding: utf-8
require 'fedux_org_stdlib/core_ext/array'

module FeduxOrgStdlib
  module RequireFiles
    def require_library(libraries, message_template = 'You need to install %s to make "%s" work.')
      libraries = Array(libraries)

      begin
        libraries.each { |l| require l }
      rescue LoadError => e
        $stderr.puts format(message_template, libraries.map { |l| l.split(%r{/}).first }.uniq.to_list, caller[1].split(/:/)[0,2].join(':'))
        $stderr.puts
        $stderr.puts e.message
        exit 1 
      end
    end

    def require_installed_gem(gems, message_template = 'You need to install %s to make "%s" work.')
      gems = Array(gems)

      raise LoadError, JSON.dump(gems: gems) if gems.any? { |name| Gem::Specification.find_all_by_name(name).blank? }
    end
  end
end

include FeduxOrgStdlib::RequireFiles