Custom rules for photosynthesis

photosynthesis-rules.js

/*globals MySystem rules nodes suggestions*/

// sun is connected to chloroplast and/or sun is connected to plant then chloroplast
if(!(rules.objectAt(0).check(nodes) || 
     (rules.objectAt(2).check(nodes) && 
      rules.objectAt(3).check(nodes) &&
      rules.objectAt(4).check(nodes)))){
  suggestions.pushObject(rules.objectAt(0).get('suggestion'));
}

// sun is connected to chloroplast and/or sun is connected to plant then chloroplast with light energy
if(!(rules.objectAt(1).check(nodes) || 
     (rules.objectAt(2).check(nodes) && 
      rules.objectAt(5).check(nodes) &&
      rules.objectAt(6).check(nodes)))){
  suggestions.pushObject(rules.objectAt(1).get('suggestion'));
}

// run through all the rules from index 7 on up as normal
rules.slice(7).forEach( function (rule) {
  if (!rule.check(nodes)) {
    suggestions.pushObject(rule.get('suggestion'));
  }
});

// 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 one or more links that aren't allowed");
}