gistfile1.txt

/*globals MySystem rules nodes suggestions*/


// returns uuids for energytypes or 'unidenitfied_type'
var linkTypes = function(node,linkTypes) {
  var links = node.get(linkTypes);
  return links.map( function (link) {
    return link.get('energyType') || 'unidenitfied_type';
  });
};

// does <node> have a transform?
var hasTransform = function (node) {
  var inLinks  = linkTypes(node,'inLinks').toArray();
  var outLinks = linkTypes(node,'outLinks').toArray();
  
  // we must have in and outlinks to transform
  if (inLinks.length  < 1) { return false; }
  if (outLinks.length < 1) { return false; }
  
  // search for an outlink not in inlinks.
  for (var i = outLinks.length - 1; i >= 0; i--) {
    if (inLinks.indexOf(outLinks[i]) < 0) { return true; }
  };
  return false;
};


// 1) "revise your diagram to show how energy is transformed"
// 
if (nodes.filter(hasTransform).length < 1) {
  suggestions.pushObject("No transformations");
}


/******************** Original rules follow ***********/

//Energy Source (sun->chlo or sun->plant->chlro)
if(!(rules.objectAt(0).check(nodes)||(rules.objectAt(7).check(nodes)&& rules.objectAt(8).check(nodes)))){
suggestions.pushObject("Your diagram does not show how the sun helps plants grow. Go back to Step 1.2 to find out and revise your diagram.");
} 


//Energy Transform
// No transformation or Incorrect Transformation
if(!rules.objectAt(1).check(nodes)){
suggestions.pushObject("Use evidence from Step 1.2 and Step 1.3 and revise your diagram to show what happens to light energy during photosynthesis.");
} else if (rules.objectAt(1).check(nodes)&&!rules.objectAt(2).check(nodes)){
suggestions.pushObject("We’ve detected a problem with your diagram. Use evidence from Step 1.2 and Step 1.3 and revise your diagram to show how energy is transformed.");
}


//Energy release I
//Glucose->mito
if(!rules.objectAt(3).check(nodes)){
suggestions.pushObject("Your diagram does not show what plants do with glucose during cellular respiration. Review the visualizations in Step 3.3 and Step 3.9 to find out and improve your diagram.");
} else if (rules.objectAt(3).check(nodes)&&!rules.objectAt(4).check(nodes)){
suggestions.pushObject("We’ve detected a problem with your diagram. What kind of energy is stored in glucose? Go back to Step 3.3 to find out and revise your diagram.");
} 

//Energy release II
//Mitochondria->Plant
if(!rules.objectAt(5).check(nodes)){
suggestions.pushObject("Your diagram does not show what mitochondria do during cellular respiration. Review the visualizations in Step 3.3 and Step 3.9 to find out and improve your diagram.");
} else if (rules.objectAt(5).check(nodes)&&!rules.objectAt(6).check(nodes)){
suggestions.pushObject("Revise your diagram to show how energy is released during cellular respiration. Use the visualization in Step 3.9 to find out.");
} 
//”Storage feedback”:  Glucose -> Plant 
if(!(rules.objectAt(9).check(nodes) ))  {
  suggestions.pushObject("Review the visualization in Step 3.3 to find out what plants do with the extra glucose and revise your diagram.");
}
//icons
if(!(rules.objectAt(12).check(nodes)&&rules.objectAt(13).check(nodes) &&rules.objectAt(14).check(nodes) &&rules.objectAt(15).check(nodes) &&rules.objectAt(16).check(nodes)))  {
  suggestions.pushObject("You can use each icon only ONCE. Use evidence from the project and revise your diagram.");
}



// Look for links that don't match one of the 'should' link rules
var links = MySystem.store.find(MySystem.Link),
    notAllowedLink;
links = links.filter(function (link) {return link.isComplete();});
notAllowedLink = links.find(function (link) {
  var positiveLinkRules = rules.filterProperty('hasLink').filter(function(rule){return !rule.get('not');});
  var matchingRule = positiveLinkRules.find(function (rule) {
    // need to handle the link check here, in the future this should be moved into the core code
    var paletteItem = rule.paletteItem(rule.get('type')),
        otherPaletteItem = rule.paletteItem(rule.get('otherNodeType'));
    
    switch(rule.get('linkDirection')) {
      case '-->':
        return rule.checkLink(link, paletteItem, otherPaletteItem);
      case '<--':
        return rule.checkLink(link, otherPaletteItem, paletteItem);
      case '---':
        return rule.checkLink(link, paletteItem, otherPaletteItem) || rule.checkLink(link, otherPaletteItem, paletteItem);
      default:
        throw "Invalid linkDirection value for diagram rule.";
    }
  });
  if(!matchingRule){ return YES; };
});

if(notAllowedLink) {
  suggestions.pushObject("You have some incorrect links in your diagram. Use evidence from the project and revise your diagram. ");
}