require 'erb'


class NGINXProxy
  class << self
    attr_accessor :domain, :port, :service

    def domain(value = nil)
      @domain = value unless value.nil?
      @domain
    end

    def port(value = nil)
      @port = value unless value.nil?
      @port
    end

    def service(value = nil)
      @service = value unless value.nil?
      @service
    end

    def generate
        template = File.read("proxy.erb")
        template = ERB.new(template)
        template.result(binding)
    end
  end
end

class ExampleProxy < NGINXProxy
  domain "gurgul.org"
  service "forgejo"
  port 3000
end

puts ExampleProxy.generate