refactor(server): Connection condition

server/db/services/database.service.ts

@@ -1,20 +1,22 @@
-import * as mongoDB from "mongodb";
 import * as dotenv from "dotenv";
+import { Collection, Db, MongoClient } from "mongodb";
 
-export const collections: { cards?: mongoDB.Collection } = {}
+export const collections: { cards?: Collection } = {}
 
 export async function connectToDatabase() {
   dotenv.config();
 
-  const client: mongoDB.MongoClient = new mongoDB.MongoClient(process.env.DB_CONN_STRING!);
+  if (process.env.DB_CONN_STRING) {
+    const client: MongoClient = new MongoClient(process.env.DB_CONN_STRING);
 
-  await client.connect();
+    await client.connect();
 
-  const db: mongoDB.Db = client.db(process.env.DB_NAME);
+    const db: Db = client.db(process.env.DB_NAME);
 
-  const cardsCollection: mongoDB.Collection = db.collection(process.env.CARDS_COLLECTION_NAME!);
+    const cardsCollection: Collection = db.collection(process.env.CARDS_COLLECTION_NAME!);
 
-  collections.cards = cardsCollection;
-
-  console.log(`Successfully connected to database: ${db.databaseName} and collection: ${cardsCollection.collectionName}`);
+    collections.cards = cardsCollection;
+
+    console.log(`Successfully connected to database: ${db.databaseName} and collection: ${cardsCollection.collectionName}`);
+  }
 }