class ChatController < ApplicationController
  def send_data
    data = CGI.escapeHTML(params["chat_input" + params[:to]])
    speaker = User.find(params[:from])
    sender_id = params[:from]
    receiver_id = params[:to]
    
    data_to_sender = chat_data(receiver_id, speaker, data) 
    data_to_receiver = chat_data(sender_id, speaker, data) 
    
    Juggernaut.send_data(data_to_sender, sender_id)
    Juggernaut.send_data(data_to_receiver, receiver_id)
    
    render :nothing => true
  end
  
  protected
  def chat_data(with, speaker, data)
    <<-DATA
      new Insertion.Bottom('messages#{with}', \
      '<li>#{speaker.name}: #{data}</li>\
      <script type=\"JavaScript\">\
      $(\"chat#{with}\").show(); \
      $(\"chat_input#{with}\").focus(); \
      var messages = $(\"messages#{with}\"); \
      messages.scrollTop = messages.scrollHeight;\
      </script>');
    DATA
  end
end