Adding user stats download to IP service

routes/services/invisiblepuzzle/invisiblepuzzle.js

 var express = require('express');
 var router = express.Router();
 
+var debug = require('debug')('Icarus:server');
+
+var mongoClient = require('mongodb').MongoClient;
+
+var assert = assert = require('assert');
+
+// Connection URL
+var mongoUrl = 'mongodb://icarus:icarus@localhost:27017/icarus';
+
+//Connect to the server and intialise the pool
+var icarusDb;
+mongoClient.connect(mongoUrl, function(err, db) {
+
+    assert.equal(null, err, err);
+    debug("Connected to MongoDB database: "+db.databaseName);
+
+    icarusDb = db;
+
+});
+
 /* GET root . */
 router.get('/', function(req, res, next) {
 
@@ -8,4 +28,90 @@ router.get('/', function(req, res, next) {
 
 });
 
+router.get('/users', function(req, res, next) {
+
+    var collection = icarusDb.collection('resources');
+
+    collection.aggregate(
+
+        // Pipeline
+        [
+            // Stage 1
+            {
+                $match: {
+                    "appdata.appname":"Invisible Puzzle",
+                    "debug":false
+                }
+            },
+
+            // Stage 2
+            {
+                $group: {
+                    "_id": "$appdata.uuid",
+                    "docs": {$sum: 1},
+                    "voiceover": {$sum : {$cond: [{$eq:["$appdata.voiceover", true]},1,0]}}
+                }
+            },
+
+            // Stage 3
+            {
+                $project: {
+
+                    "docs": 1,
+                    "vo_ratio": {$divide:["$voiceover","$docs"]}
+
+                }
+            },
+
+            // Stage 4
+            {
+                $group: {
+
+                    "_id": 1,
+                    "users": {$sum: 1},
+                    "vib": {$sum : {$cond: [{$gt:["$vo_ratio", 0]},1,0]}}
+
+                }
+            },
+
+            // Stage 5
+            {
+
+                $project: {
+
+                    "_id": 0,
+                    "users": 1,
+                    "vib": 1
+
+                }
+
+            }
+        ]
+
+    ).toArray(function(err, result) {
+
+        if(err!=null){
+
+            debug(err);
+            next(err);
+
+        }else{
+
+            if(result==undefined){
+
+                res.sendStatus(404);
+
+            }else{
+
+                res.send(200,result);
+
+            }
+
+        }
+
+    });
+
+
+});
+
 module.exports = router;