Terminal loading while requesting to an URL

buffer.rb

#program to show buffering while requesting an api or a webpage
require "httparty"
module Buffer
    $flag=true
    def self.show inp,url#,tim 
        $reqUrl=url
        def buffer inp
            while $flag
                print "#{inp} .\r"
                sleep(0.3)
                print "#{inp} ..\r"
                sleep(0.3)
                print "#{inp} ...\r"
                sleep(0.3)
                print "                             \r"
            end
        end
      
        def self.req 
            req=HTTParty.get($reqUrl)
            if req.code==200
                $flag=false
                return req
            else
                $flag=false
                return req
            end

        end
            a=Thread.new{buffer inp}
            b=Thread.new{req}
            a.join
            b.join
    end
end
puts Time.now
def test
    include Buffer
    Buffer.show "Fetching Posts","https://jsonplaceholder.typicode.com/posts"
     rs=Buffer.req()
     if rs.code==200
        puts "Oh yeah"
     else
        puts "Nope"
     end
end
test
# puts Time.now