reins.rb

require 'json'
require 'httparty'
require 'telegram/bot'
require 'byebug'

def request_ins

  begin
    puts "request start at " + Time.now.to_s
    response = HTTParty.get('https://www.instagram.com/twicetagram/', timeout: 60)
  rescue HTTParty::Error => e
   # don´t do anything / whatever
    puts "HTTParty::Error " + e.to_s
    sleep(5)
    requestIns
  rescue StandardError => e
    puts "StandardError " + e.to_s
    sleep(5)
    requestIns
  end
  
  return response
end

def check_response
  response = request_ins
  if !response.nil?
    if response.code.between?(400, 600)
      puts Time.now + response.code.to_s
      return 0
    else
      puts "response success! response code is " + response.code.to_s
      regex = %r{(?<=window._sharedData = ).+(?=;</script>)}
      data = response.scan(regex)[0]
      begin  
        json = JSON.parse(data)
      rescue JSON::ParserError
        puts "JSON::ParserError"
        sleep(5)
        request_ins
      end
      if json.nil?
        puts "response nil"
        return 0
      else
        return json["entry_data"]["ProfilePage"][0]
      end
    end
  else
    puts "response nil"
    return 0
  end

end

puts check_response