feat: add singleton pattern in cart and products factory

package.json

@@ -1,30 +1,32 @@
 {
-  "name": "proyectofinal",
-  "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
-  "scripts": {
-    "dev": "nodemon",
-    "start": "node ./dist/index.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
-  "devDependencies": {
-    "@types/express": "^4.17.13",
-    "nodemon": "^2.0.12",
-    "ts-node": "^10.2.1",
-    "typescript": "^4.3.5"
-  },
-  "dependencies": {
-    "dotenv": "^10.0.0",
-    "express": "^4.17.1",
-    "firebase-admin": "^9.11.1",
-    "knex": "^0.95.11",
-    "mongoose": "^6.0.6",
-    "mysql": "^2.18.1",
-    "regenerator-runtime": "^0.13.9",
-    "sqlite3": "^5.0.2"
-  }
+	"name": "proyectofinal",
+	"version": "1.0.0",
+	"description": "",
+	"main": "index.js",
+	"scripts": {
+		"dev": "nodemon --DAO=MEMORIA",
+		"start": "node ./dist/index.js",
+		"test": "echo \"Error: no test specified\" && exit 1"
+	},
+	"keywords": [],
+	"author": "",
+	"license": "ISC",
+	"devDependencies": {
+		"@types/args": "^5.0.0",
+		"@types/express": "^4.17.13",
+		"nodemon": "^2.0.12",
+		"ts-node": "^10.2.1",
+		"typescript": "^4.3.5"
+	},
+	"dependencies": {
+		"args": "^5.0.1",
+		"dotenv": "^10.0.0",
+		"express": "^4.17.1",
+		"firebase-admin": "^9.11.1",
+		"knex": "^0.95.11",
+		"mongoose": "^6.0.6",
+		"mysql": "^2.18.1",
+		"regenerator-runtime": "^0.13.9",
+		"sqlite3": "^5.0.2"
+	}
 }

src/apis/cartapi.ts

@@ -1,13 +1,12 @@
+import { flags } from '../config/config';
 import { CartFactoryDAO } from '../models/cart/cartfactory';
 import { Cart, Products } from '../models/interfaces';
 
-const tipo = 6;
-
 class CartAPI {
 	private cart;
 
 	constructor() {
-		this.cart = CartFactoryDAO.get(tipo);
+		this.cart = CartFactoryDAO.get(flags.D);
 	}
 
 	async getProducts(id?: string): Promise<Cart[] | Products[]> {

src/apis/productsapi.ts

@@ -1,13 +1,12 @@
 import { FactoryDAO } from '../models/products/productfactory';
 import { Products, newProductI, ProductQuery } from '../models/interfaces';
-
-const tipo = 6;
+import { flags } from '../config/config';
 
 class prodAPI {
 	private products;
 
 	constructor() {
-		this.products = FactoryDAO.get(tipo);
+		this.products = FactoryDAO.get(flags.D);
 	}
 
 	async getProducts(id?: string): Promise<Products[]> {

src/config/config.ts

@@ -1,4 +1,8 @@
 import dotenv from 'dotenv';
+import args from 'args';
+
+args.option('DAO', 'Sets the DB to use')
+export const flags = args.parse(process.argv);
 
 dotenv.config();