Update seed directory to use loopback

seed/challenge-migration.js

@@ -0,0 +1,58 @@
+require('dotenv').load();
+var bonfires = require('./bonfires.json'),
+  app = require('../server/server'),
+  mongodb = require('mongodb'),
+  MongoClient = mongodb.MongoClient,
+  User = app.models.User,
+  UserIdentity = app.models.userIdentity,
+  oldUri='mongodb://localhost:27017/app30893198',
+  coursewares = require('./coursewares.json');
+
+var counter = 0;
+var offerings = 2;
+
+var CompletionMonitor = function() {
+  counter++;
+  console.log('call ' + counter);
+
+  if (counter < offerings) {
+    return;
+  } else {
+    process.exit(0);
+  }
+};
+
+MongoClient.connect(oldUri, function(err, database) {
+
+  database.collection('users').find({}).batchSize(20).toArray(function(err, users) {
+    if (users !== null && users.length !== 0) {
+      var mappedUserArray = users.map(function(user) {
+        Object.keys(user.profile).forEach(function(prop) {
+          user[prop] = user.profile[prop];
+        });
+        Object.keys(user.portfolio).forEach(function(prop) {
+          user[prop] = user.portfolio[prop];
+        });
+
+        user.completedCoursewares = Object.keys(user.challengesHash)
+          .filter(function(key) {
+            return user.challengesHash[key] !== 0;
+          })
+          .map(function(key) {
+            return({
+              _id: coursewares[key].id,
+              completedDate: user.challengesHash[key]
+            });
+          });
+
+        return user;
+      });
+      User.create(mappedUserArray, function(err) {
+        if (err) {
+          console.log(err);
+        }
+        console.log("a batch finished");
+      });
+    }
+  });
+});