neocities/app/contact.rb

get '/contact' do
  erb :'contact'
end

post '/contact' do
  @errors = []

  if params[:email].empty? || params[:subject].empty? || params[:body].empty?
    @errors << 'Please fill out all fields'
  end

  unless verify_hcaptcha
    @errors << 'Captcha was not filled out (or was filled out incorrectly)'
  end

  if !@errors.empty?
    erb :'contact'
  else
    body = params[:body]

    if current_site
      body = "current username: #{current_site.username}\n\n" + body
      if parent_site != current_site
        body = "parent username: #{parent_site.username}\n\n" + body
      end
    end

    if current_site && current_site.supporter?
      subject = "[Neocities Supporter Contact]: #{params[:subject]}"
    else
      subject = "[Neocities Contact]: #{params[:subject]}"
    end

    EmailWorker.perform_async({
      from: 'web@neocities.org',
      reply_to: params[:email],
      to: 'contact@neocities.org',
      subject: subject,
      body: body,
      no_footer: true
    })

    flash[:success] = 'Your contact message has been sent.'
    redirect '/'
  end
end