Add verification token model

package.json

@@ -35,6 +35,7 @@
     "monetdb-pool": "0.0.8",
     "mongoose": "^4.6.0",
     "nconf": "^0.8.x",
+    "node-uuid": "^1.4.8",
     "nodemailer": "^4.0.1",
     "nodemailer-html-to-text": "^2.1.0",
     "passport": "^0.3.2",

src/libs/models/verificationToken.js

+const mongoose = require('mongoose');
+const Schema = mongoose.Schema;
+const libs = `${process.cwd()}/libs`;
+const log = require(`${libs}/log`)(module);
+const User = require(`${libs}/models/user`);
+const uuid = require('node-uuid');
+
+let VerificationToken = new Schema({
+    userId: {
+        type: Schema.Types.ObjectId,
+        required: true,
+        ref: 'User'
+    },
+    token: {
+        type: String,
+        required: true
+    },
+    createdAt: {
+        type: Date,
+        required: true,
+        default: Date.now,
+        expires: '4h'
+    }
+});
+
+VerificationToken.methods.createVerificationToken = function(done) {
+    let verificationToken = this;
+    let token = uuid.v4();
+    verificationToken.set('token', token);
+    verificationToken.save(function(err) {
+        if (err) return done(err);
+        log.debug('Verification Token', verificationToken);
+        return done(null, token);
+    })
+}
+
+module.exports = mongoose.model('VerificationToken', VerificationToken);