fix(multiple-db-instances): fix the use of multiple nedb instances (#25)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nfl-telegram-bot",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "description": "A Telegram bot that provides the latest news about the NFL",
   "repository": "github:jpmoura/nfl-news-for-telegram",
   "main": "index.ts",

src/infra/repository/DatastoreFabric.ts

@@ -0,0 +1,13 @@
+import Datastore from 'nedb';
+
+export default class DatastoreFabric {
+  private static internalChatsDatastore: Datastore = null;
+
+  static get chatsDatastore() {
+    if (!this.internalChatsDatastore) {
+      this.internalChatsDatastore = new Datastore({ filename: 'chats.db', autoload: true });
+    }
+
+    return this.internalChatsDatastore;
+  }
+}

src/infra/repository/chat/ChatRepository.ts

@@ -1,5 +1,6 @@
 import Datastore from 'nedb';
 import { promisify } from 'util';
+import DatastoreFabric from '../DatastoreFabric';
 
 export default class ChatRepository {
   private readonly db: Datastore;
@@ -9,7 +10,7 @@ export default class ChatRepository {
   private readonly promisifyRemove: any;
 
   constructor() {
-    this.db = new Datastore({ filename: 'bot.db', autoload: true });
+    this.db = DatastoreFabric.chatsDatastore;
     this.promisifyUpdate = promisify(this.db.update.bind(this.db));
     this.promisifyRemove = promisify(this.db.remove).bind(this.db);
   }