From 5c664ffd41238ef53ae32f9dd6886fbd9454a021 Mon Sep 17 00:00:00 2001
From: mattkins <arenzael@gmail.com>
Date: Wed, 23 Oct 2019 15:21:08 -0500
Subject: [PATCH] Resolved deprecation warnings for useNewUrlParser and
 useUnifiedTopology by implementing those options on mongoose.connect. Moved
 mongoose.Promise = Bluebird outside of the plugin declaration to ensure that
 it's set first thing and avoid mPromise deprecation warnings

---
 index.js | 57 +++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 34 insertions(+), 23 deletions(-)

diff --git a/index.js b/index.js
index 4a8c677..cd95c33 100644
--- a/index.js
+++ b/index.js
@@ -1,37 +1,48 @@
 'use strict'
 
 const fp = require('fastify-plugin')
-const Mongoose = require('mongoose')
+const mongoose = require('mongoose')
 const Bluebird = require('bluebird')
+const ObjectId = mongoose.Types.ObjectId
 
-const ObjectId = Mongoose.Types.ObjectId
+mongoose.Promise = Bluebird
 
 function fastifyMongoose (fastify, options, next) {
   const uri = options.uri
   delete options.uri
   const opt = Object.assign({}, options, {
-    promiseLibrary: Bluebird
+    promiseLibrary: Bluebird,
+    useNewUrlParser: true,
+    useUnifiedTopology: true
   })
 
-  Mongoose.Promise = Bluebird
-  Mongoose.connect(uri, opt)
-    .then(() => {
-      const mongo = {
-        db: Mongoose.connection,
-        ObjectId: ObjectId
-      }
-
-      fastify
-        .decorate('mongo', mongo)
-        .addHook('onClose', function (fastify, done) {
-          fastify.mongo.db.close(done)
-        })
-
-      next()
-    },
-    err => {
-      if (err) return next(err)
-    })
+  mongoose.connect(uri, opt)
+    .then(
+      () => {
+
+        mongoose.connection.on('error', err => {
+          console.log('Mongoose connection error', err)
+        });
+
+        const mongo = {
+          db: mongoose.connection,
+          ObjectId: ObjectId
+        }
+
+        fastify
+          .decorate('mongo', mongo)
+          .addHook('onClose', function (fastify, done) {
+            fastify.mongo.db.close(done)
+          })
+
+        next()
+      })
+    .catch(
+      err => {
+          console.log('Error connecting to MongoDB', err)
+          next(err)
+        }
+    )
 }
 
-module.exports = fp(fastifyMongoose, '>=0.29.0')
+module.exports = fp(fastifyMongoose, '>=0.29.0')
\ No newline at end of file