Daniel@0: "use strict";
Daniel@0: 
Daniel@0: App.module("DataModule", function(DataModule, App, Backbone, Marionette, $, _, Logger) {
Daniel@0: 
Daniel@0:     DataModule.addInitializer(function(){
Daniel@0:         //var logger = Logger.get("DataModule.DynamicDefinition");
Daniel@0: 
Daniel@0:         DataModule.DynamicDefinition = DataModule.ModelWithHashableAttributes.extend({
Daniel@0:             
Daniel@0:             initialize: function(attributes, options) {
Daniel@0:                 DataModule.ModelWithHashableAttributes.prototype.initialize.apply(this, arguments);
Daniel@0:                 
Daniel@0:                 this._entityConfig = options.entityConfig;
Daniel@0:                 this._provider = options.provider;
Daniel@0:                 this._cachedRequestHash = "{}";
Daniel@0:                 
Daniel@0:                 this.listenTo(this._entityConfig, "change:parameters", this.update);
Daniel@0:                 this.update();
Daniel@0:             },
Daniel@0:             
Daniel@0:             update: function(force) {
Daniel@0:                 var parameterHash = this._entityConfig.getHashForParameters();
Daniel@0:                 var requestHash = this._provider._requestHashesByParameterHash[parameterHash];
Daniel@0:                 if (!requestHash) {
Daniel@0:                     var requestParameters = this._provider.configParametersToRequestParameters(this._entityConfig);
Daniel@0:                     requestHash = JSON.stringify(requestParameters);
Daniel@0:                     this._provider._requestHashesByParameterHash[parameterHash] = requestHash;
Daniel@0:                     this._provider._requestParametersByRequestHash[requestHash] = requestParameters;
Daniel@0:                 }
Daniel@0:                 
Daniel@0:                 if (requestHash == this._cachedRequestHash && !force) {
Daniel@0:                     return;
Daniel@0:                 }
Daniel@0:                 
Daniel@0:                 if (requestHash !== this._cachedRequestHash) {
Daniel@0:                     if (this._cachedRequestHash) {
Daniel@0:                         this.stopListening(this._provider, "change:" + this._cachedRequestHash, this._applyCachedAttributes);
Daniel@0:                     }
Daniel@0:                     this._cachedRequestHash = requestHash;
Daniel@0:                     this.listenTo     (this._provider, "change:" + this._cachedRequestHash, this._applyCachedAttributes);
Daniel@0:                 }
Daniel@0:                 
Daniel@0:                 if (this._provider._cachedAttributesByRequestHash[this._cachedRequestHash] && !force) {
Daniel@0:                     this._applyCachedAttributes();
Daniel@0:                 } else {
Daniel@0:                     this._provider.updateResponseForRequestHash(requestHash);
Daniel@0:                 };
Daniel@0:             },
Daniel@0:             
Daniel@0:             _applyCachedAttributes: function() {
Daniel@0:                 var definitionAttributes =  this._provider._cachedAttributesByRequestHash[this._cachedRequestHash];
Daniel@0:                 if (_.isUndefined(definitionAttributes)) {
Daniel@0:                     throw _.str.sprintf("Unexpected cached attributes for DynamicDefinition to be undefined");
Daniel@0:                 }
Daniel@0:                 
Daniel@0:                 if (!_.isEqual(this.attributes, definitionAttributes)) {
Daniel@0:                     this.attributes = definitionAttributes;
Daniel@0:                     this.trigger("change");
Daniel@0:                 }
Daniel@0:             }
Daniel@0:         });
Daniel@0:     });
Daniel@0:     
Daniel@0: }, Logger);