chore: cleanup code

Author: JanefrancessC

chat-app/README.md

@@ -1,5 +1,27 @@
 # Write and Deploy Chat Application Frontend and Backend
 
+### To start the program
+
+First install dependencies:
+
+```bash
+npm install
+```
+
+From `/backend` directory:
+
+Option 1. Production mode
+
+```bash
+npm start
+```
+
+Option 2. Development mode
+
+```bash
+npm run dev
+```
+
 ### Link to the coursework
 
 https://sdc.codeyourfuture.io/decomposition/sprints/2/prep/

chat-app/backend/index.js

@@ -1,11 +1,13 @@
 import express from "express";
 import cors from "cors";
+import dotenv from "dotenv";
 
 const app = express();
 app.use(cors());
 app.use(express.json());
+app.use(dotenv())
 
-const port = 3000;
+const port = process.env.PORT || 3000;
 let nextMessageId = 1;
 const messages = [
   {

chat-app/backend/package-lock.json

@@ -8,10 +8,12 @@
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "start": "nodemon ./index.js"
+    "start": "node index.js",
+    "dev": "nodemon index.js"
   },
   "dependencies": {
     "cors": "^2.8.6",
+    "dotenv": "^17.4.2",
     "express": "^5.2.1"
   },
   "devDependencies": {

chat-app/backend/package.json

@@ -5,8 +5,8 @@ let messageEl = document.getElementById("message");
 let displayBox = document.getElementById("display-message");
 let feedbackEl = document.getElementById("feedback");
 
-// const serverURL = `https://janefrancessc-chat-application-backend.hosting.codeyourfuture.io/messages`;
-const serverURL = "http://127.0.0.1:3000/messages";
+const serverURL = `https://janefrancessc-chat-application-backend.hosting.codeyourfuture.io/messages`;
+// const serverURL = "http://127.0.0.1:3000/messages";
 const state = { messages: [] };
 let pollingMode = "regular";
 let longPoll = false;