Chat controller

gistfile1.cfm

<cfcomponent>
 <cfscript>
  variables.instance = structNew();
  instance.chatHistory = arrayNew(1);
  instance.clients = arrayNew(1);
  instance.messageTotal = arrayLen(instance.chatHistory);
 </cfscript>

 <cffunction name="init" access="public" returntype="chat">
  <cfreturn this/>
 </cffunction>

 <cffunction name="postMessage" access="public" returntype="struct">
  <cfargument name="message" type="string" required="yes"/>
  <cfargument name="userName" type="string" required="yes"/>

  <cflock name="lockForWritingMessages" type="exclusive" timeout="5">
  <cfscript>
   var result = structNew();
   var tempData = structNew();
   var utils = new com.kisdigital.utils();
   var msgTS = '<span style="color: blue;">[' & '#dateFormat(now(), "m/d/yy")#' & ' ' & '#timeFormat(now(), "h:mm tt")#' & '] </span> ';
   var t = arrayNew(1);
   var res = 0;

   session.userName = arguments.userName;
   result['svrStatus'] = "0";
   result['svrMessage'] = "OK";
   tempData['timeStamp'] = msgTs;
   tempData['userid'] = utils.stripHTML(arguments.userName);
   tempData['message'] = utils.stripHTML(arguments.message);
   tempData['msgid'] = instance.messageTotal + 1;
   instance.messageTotal++;
   arrayAppend(instance.chatHistory, tempData);
   if(arrayLen(instance.chatHistory) gt 100) arrayDeleteAt(instance.chatHistory, 1);
   if(findNoCase("***", arguments.userName)){
    t = arguments.message.split(" ");
    this.manageClients(t[1]);
   }
   else{
    this.manageClients(arguments.userName);
   }
  </cfscript>
  </cflock>
  <cfreturn result/>
 </cffunction>

 <cffunction name="getMessages" access="public" returntype="struct">
  <cfargument name="startID" type="numeric" required="no" default="0"/>
  <cfscript>
   var result = structNew();
   var i = 0;
   var startIdx = 0;
   var msgCnt = arrayLen(instance.chatHistory);
   result['svrStatus'] = "0";
   result['svrMessage'] = "OK";
   result['lastid'] = instance.messageTotal;
   if(arguments.startID eq 0){
    result['messages'] = instance.chatHistory;
   }
   else{
    result['messages'] = arrayNew(1);
    for(i = 1; i lte msgCnt; i++){
     if(instance.chatHistory[i].msgid gt arguments.startID)
      arrayAppend(result['messages'], instance.chatHistory[i]);
    }
   }
   manageClients(session.userName);
   return result;
  </cfscript>
 </cffunction>

 <cffunction name="manageClients" access="private" returntype="boolean">
  <cfargument name="userName" type="string" required="true"/>
  <cflock name="lockForManagingClients" type="exclusive" timeout="5">
   <cfscript>
    var i = 0;
    var found = 0;
    var tmpStruct = structNew();
    if(len(trim(arguments.userName)) and not findNoCase("***", arguments.userName)){
     for(i=1; i lte arrayLen(instance.clients); i++){
      if(instance.clients[i].userName eq arguments.userName) found = 1;
     }
     if(found){
      instance.clients[found]['lastUpdated'] = now();
     }
     else{
      tmpStruct['userName'] = arguments.userName;
      tmpStruct['lastUpdated'] = now();
      arrayAppend(instance.clients, tmpStruct);
     }
    }
   </cfscript>
  </cflock>
  <cfreturn true/>
 </cffunction>

 <cffunction name="pruneClients" access="private" returnType="void">
  <cflock name="lockForPruningClientList" type="exclusive" timeout="5">
   <cfscript>
    var i = 0;
    // Cleanup:
    for(i = arrayLen(instance.clients); i gte 1; i--){
     if(abs(dateDiff("n", now(), instance.clients[i].lastUpdated)) gt 1){
      postMessage(instance.clients[i].userName & ' removed from chat for inactivity.', '*** ');
      arrayDeleteAt(instance.clients, i);
     }
    }
   </cfscript>
  </cflock>
 </cffunction>

 <cffunction name="getClients" access="public" returnType="struct">
  <cfscript>
   var result = structNew();
   pruneClients();
   result['svrStatus'] = "0";
   result['svrMessage'] = "OK";
   result['userInfo'] = instance.clients;
   return result;
  </cfscript>
 </cffunction>

</cfcomponent>