Read any graph

README.md

@@ -13,14 +13,14 @@ You can run the program with:
 ```
 node explanations.js <template> <graph>
 ``` 
-Template is the location of the pug template while graph is a graph in json format. Example:  
+Template is the location of the pug template while graph is a graph in csv format (with "," as delimiter). Example:  
 ```
-node explanations.js templates/english/argument.pug graphs/explanationGraph.json
+node explanations.js templates/english/argument.pug graphs/exp_graph_1_en.csv
 ``` 
 
 You can specify the language, English or Italian (the default is English), like in the following example:  
 ```
-node explanations.js templates/italian/feedback.pug graphs/explanationGraph.json italian
+node explanations.js templates/italian/feedback.pug graphs/exp_graph_1_it.csv italian
 ```  
 
 # Basic Tutorial for Templates
@@ -40,39 +40,75 @@ Spaces between different plain texts (except only punctuation) are automatically
 will still output: ```Hello world!``` 
 
 ## Variables  
-The object passed to RosaeNLG (after the graph has been processed) is an explanation and has the following fields:
-```
-"entity", //name of the food
-"timing", //time interval (Week or Day)
-"quantity", 
-"expectedQuantity",
-"constraint", //greater or less
-"nutrient",
-"consequence",
-"alternative"
+The object passed to RosaeNLG (after the graph has been processed) is an explanation. The following is the object generated from graphs/exp_graph_1_en.csv:
+```
+{
+  timestamp: '1541622487915',
+  startTime: '1541440506117',
+  endTime: '1541622487915',  
+  quantity: '3',
+  expectedQuantity: '2',     
+  priority: '1',
+  level: '3',
+  history: '1',
+  explanationId: 'explanation_1yfzqe9kjrdmm0sc349qj3x7loeal6tzw7amlhhphpl5z78051_mr-diet-018-nweek_1541622487915',
+  user: '1yfzqe9kjrdmm0sc349qj3x7loeal6tzw7amlhhphpl5z78051',
+  ruleId: 'mr-diet-018-nweek',
+  entityType: 'foodcategory',
+  entity: {
+    enLabel: 'red meat',
+    negative: [
+        {   enLabel: 'animal protein', 
+            cons_en: [ 'intestinal inflammation', 'the increment of cancer risk' ] 
+        },
+        {   enLabel: 'animal lipids',
+            cons_en: [
+                'increment of cardiovascular disease risk',
+                'increment of cholesterol in the blood'
+            ]
+        }
+    ],
+    alternatives: [ { enLabel: 'processed legumes' }, { enLabel: 'fish' } ]
+  },
+  timing: 'week',
+  meals: [ 'meal-meal-1541440506117', 'meal-meal-1541440506118' ],
+  goals: 'sp-goal-d-114',
+  constraint: 'less'
+}
 ```
-To print a field, you write ```!{explanation.field}```. For example, if nutrient is "vitamin d":  
+To print a field, you write ```#[+value(explanation.field)]``` or ```!{explanation.field}```. For example, the value of explanation.entity.enLabel is "red meat":  
 ```
-|This dish contains !{explanation.entity}.
+|You ate #[+value(explanation.entity.enLabel)].
 ```
-will output: ```This dish contains vitamin d.```
+will output: ```You ate red meat.```  
+
+```#[+value(explanation.field)]``` will throw an error if the field is undefined while ```!{explanation.field}``` will print an empty string.
 
 ## Conditionals
-If-else statements are used like in the following example where _entity=meat_ and _constraint=less_:
+If-else statements are used like in the following example where _entity.enLabel=meat_ and _constraint=less_:
 ```
 if explanation.constraint == 'greater'
 	|You ate too much,
 	|enough 
 else 
 	|You did not eat enough,
 	|more
-|!{explanation.entity}!
+|#[+value(explanation.entity.enLabel)]!
 ```  
 will output: ```You ate too much, enough meat!```  
-Note that to use an explanation field in an if-else statement you must not use the ```!{}``` notation.  
+Note that to use an explanation field in an if-else statement you must not use the ```#[+value()]``` or the ```!{}``` notation.  
+
+## Javascript code and Functions
+You can write javascript code in a template by starting the line with the "```-```" character,for example here i declare two variables and then I use them in the template:
+```
+- let nutrient = "cheese"
+- let food = "pie"
 
-## Functions
-You can also use javascript functions in a template. With this program you can use ```pluralize.isSingular()``` and ```pluralize.isPlural()``` in a template to check if a word is either singular or plural. Example:  
+|the !{food} contains a lot of !{nutrient}
+```
+This will output ```The pie contains a lot of cheese```
+### Pluralize
+You can use ```pluralize.isSingular()``` and ```pluralize.isPlural()``` in a template to check if a word is either singular or plural. Example:  
 ```
 if pluralize.isSingular(explanation.entity)
 	|contains
@@ -81,6 +117,13 @@ else
 ```  
 This will output ```contains``` if the entity field is singular or ```contain``` if the entity field is plural.  
 
+### Random
+The random function will return a random element of an array (if the argument is an array) or the argument if it is not an array.  
+```
+- let nutrient = random(explanation.entity.negative)
+- let consequence = random(nutrient.cons_en)
+```
+
 You can also add your own functions to pug (this is explained bellow in the RosaeNLG tutorial)  
 
 For other advanced features in Pug you can check the [Pug main website](https://pugjs.org/).