require "env_checker/version"
require "yaml"

module EnvChecker

  def self.check(file = nil)
    missing_variables = []
    variables(file).each do |env_v|
      missing_variables << "#{env_v[:name]} #{env_v[:desc]}" if ENV[env_v[:name]].nil?
    end
    send_error(missing_variables) if missing_variables.any?
  end

  private

  def self.send_error(missing_variables)
    # Do nothing, override this to send to anywhere you want
  end

  def self.variables(file)
    file ||= "lib/constants/env_variables.yml"
    YAML.load_file(file) || []
  end
end