//used for the listing of UGC data

if (!window.ccs.ugc) {
   ccs.ugc = {}; // package declaration
}
ccs.ugc.path = '/shared/content/ugc_content/';
ccs.ugc.ugcpath = ccs.contextPath + "/ugc/" + ccs.appName + "/" + ccs.languageCode + "/";



ccs.ugc.List = function() {
   var self;
   var oid;
   var curMaxItems;
   var curOrder;
   var curOverrideScheme;

   // constructor function
   function constructorFn() {
      self = this;
   }

   // init function called once document is loaded
   constructorFn.prototype.init = function(objectid) {
      oid = objectid;      
   }


   //adds any ccs request vars to the request, like clear cache etc so that the ajax also gets cleared
   //also passes on any variables statring with ugc_pass_, allowing the calling page to manipulate ugc call
   constructorFn.prototype.addCCSVars = function () {
      var additionalPars = "";
      var h = location.href;
      var posQ = h.indexOf("?");
      if (posQ > -1) {
         pars = h.substring(posQ + 1, h.length);
         var nameVals = pars.split("&");
         for (i = 0; i < nameVals.length; i++) {
            var nameVal = nameVals[i].split("=");
            if (nameVal.length == 2) {
               if (nameVal[0].indexOf("ccs_") == 0 || nameVal[0].indexOf("ugc_pass_") == 0 ) {
                  additionalPars += "&" + nameVals[i];
               }
            }
         }
      }
      return additionalPars;
   }
   //extract the page name fro the current URL
   constructorFn.prototype.getPageName = function () {
      var h = location.href;
      var posQ = h.indexOf("?");
      //trim off parameters
      if (posQ > -1) {
         h = h.substring(0, posQ);
      }
      posQ = h.lastIndexOf("/");
      if (posQ > -1) {
         h = h.substring(posQ + 1, h.length);
      }

      return h;
   }
   //paging
   constructorFn.prototype.showPage = function (page) {
      if ($("ugcPage_" + oid + "_" + page)) {
         $("ugcPageContent_" + oid).innerHTML = $("ugcPage_" + oid + "_" + page).value
         for (i = 1; i <= $("ugcPageSelect_" + oid).options.length; i++) {
            if ($("ugc_paging_" + oid + "_" + i)) {
               $("ugc_paging_" + oid + "_" + i).className = "ugc_paging_page_normal";
            }
         }
         if ($("ugc_paging_" + oid + "_" + page)) {
            $("ugc_paging_" + oid + "_" + page).className = "ugc_paging_page_highlight";
         }

         //we need to hide/show the next/previous links
         var iPage = 1 * page; //ensure int
         if (iPage == 1) {
            //hide the previous link, we are on the first page
            $("ugcPageNext_" + oid).style.display = 'block';
         } else {
            $("ugcPageNext_" + oid).style.display = 'none';
         }
         if (iPage == $("ugcPageSelect_" + oid).options.length) {
            //hide the previous link, we are on the last page
            $("ugcPagePrevious_" + oid).style.display = 'block';
         } else {
            $("ugcPagePrevious_" + oid).style.display = 'none';
         }


      } else {
         alert("Invalid page " + page);
      }
   }
   //paging
   constructorFn.prototype.showPrevious = function (page) {
      if ($("ugcPageSelect_" + oid).selectedIndex > 0) {
         $("ugcPageSelect_" + oid).selectedIndex -= 1;
          self.showPage($("ugcPageSelect_" + oid).selectedIndex + 1);
      }
   }
   //paging
   constructorFn.prototype.showNext = function (page) {
      if ($("ugcPageSelect_" + oid).selectedIndex < $("ugcPageSelect_" + oid).options.length) {
         $("ugcPageSelect_" + oid).selectedIndex += 1;   
         self.showPage($("ugcPageSelect_" + oid).selectedIndex + 1);
      }
   }
   //makes an ajax request to load the html for setting up the UGC
   constructorFn.prototype.loadList = function (maxItems, order, cc, overrideScheme) {
      self.showLoader();

      if (maxItems != null) {
         curMaxItems = maxItems;
      } else {
         maxItems = curMaxItems;
      }
      if (order != null) {
         curOrder = order;
      } else {
         order = curOrder;
      }
      if (overrideScheme != null) {
         curOverrideScheme = overrideScheme;
      } else {
         overrideScheme = curOverrideScheme;
      }



      ccPar = "";
      if (cc) {
         ccPar= "&ccs_clear_cache=1"
      }

      referer_page = self.getPageName();

      new Ajax.Request(ccs.ugc.ugcpath + oid + ".html?type=list&max_items=" + maxItems + "&order=" + order + ccPar + self.addCCSVars() + "&referer_page=" + referer_page + "&sn=" + overrideScheme ,
      {
         method:'get',
         onSuccess: function(transport) {
            var listing = transport.responseText;
            $("ugcList_" + oid).innerHTML = listing;
            self.hideLoader();
            if ($("ugcPageSelect_" + oid)) {
               self.showPage(1);
               $("ugcPageSelect_" + oid).selectedIndex = 0;
            }
            self.hideVoteControls();
         },
         onFailure: function(transport) {
            //the error is not json...its html so we simply plonk it in the display
            $("ugcList_" + oid).innerHTML = transport.responseText;
            self.hideLoader();
         }
      });

   }
   //makes an ajax request to load the html for setting up the UGC
   constructorFn.prototype.hideVoteControls = function () {
      var voteCookie = getCookie("vids");
        if (voteCookie != null) {
            var votedIds = voteCookie.split("X");
            var message = $('votedMessage' + oid).innerHTML;
            for (var i=0; i < votedIds.length; i++) {
               if ($('voteControls' + votedIds[i])) {
                  $('voteControls' + votedIds[i]).innerHTML = message;
               }
            }
        }

   }

   //makes an ajax request to load the html for setting up the UGC
   constructorFn.prototype.refreshList = function () {
      self.loadList();
   }
   //makes an ajax request to load the html for setting up the UGC
   constructorFn.prototype.refreshListForVote = function () {
      self.loadList(null, null, true, null);
   }

   constructorFn.prototype.showLoader = function () {
      //hide loader
      $("ugcListLoader_" + oid).style.visibility = "visible";
      $("ugcListLoader_" + oid).style.display = "block";
   }

   constructorFn.prototype.hideLoader = function () {
      //hide loader
      $("ugcListLoader_" + oid).style.visibility = "hidden";
      $("ugcListLoader_" + oid).style.display = "none";
   }

   return new constructorFn();
}