rename helpers utils

utils/mongoose.js

@@ -0,0 +1,36 @@
+const mongoose = require('mongoose')
+
+module.exports = {
+  init: (client) => {
+    const options = {
+      useNewUrlParser: true,
+      useUnifiedTopology: true,
+      autoIndex: false,
+      family: 4
+    }
+
+    try {
+      mongoose.connect(client.config.mongoDB, options)
+      mongoose.set('useFindAndModify', false)
+      mongoose.Promise = global.Promise
+    } catch (err) {
+      client.logger.fatal(`Could not connect to the database:\n ${err.stack}`)
+    }
+
+    mongoose.connection.on('connected', () => {
+      client.logger.info('Connected to the database.')
+    })
+
+    mongoose.connection.on('err', err => {
+      client.logger.error(`Database connection error:\n ${err.stack}`)
+    })
+
+    mongoose.connection.on('disconnected', () => {
+      client.logger.info('Disconected from the database.')
+    })
+
+    mongoose.connection.on('reconnected', () => {
+      client.logger.info('Reconnected to the database.')
+    })
+  }
+}