added word scoring functionality

googletrendsgame/server/trendsAPI.js

@@ -1,9 +1,35 @@
-
-
+const googt = require('google-trends-api');
+const Promise = require('promise');
+const DAY = 1000 * 60 * 60 * 24;
 module.exports=
     {
+        /*
+        desc: returns an integer score for the word over the day
+        */
         getPopularity: function(word)
         {
-            return 0;
+            //must be a promise since call to trends API is async
+            return new Promise(function(resolve, reject){
+
+            //specifies the keyword, time interval, and granularity
+            googt.interestOverTime({keyword:word,
+              startTime:new Date(Date.now() - DAY),granularTimeResolution:true})
+              .then(function(results){
+                //turn into json object
+                data = JSON.parse(results).default.timelineData;
+
+                //add up values
+                var total = 0;
+                data.forEach(function(element){
+                  console.log(element.formattedTime + " " + element.value[0]);
+                  total += element.value[0];
+                })
+
+                //tell function to return
+                resolve(total);
+              }).catch(function(err){
+                reject("Google Trends Query Failed");
+              });
+            });
         }
-    };
+     };