adding week2 examples

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Cookies/README.md

+# Info
+run npm i to install necessary modules 
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Cookies/app.js

+const express = require("express");
+const app = express();
+const cookieParser = require("cookie-parser");
+const portNumber = 3000;
+
+app.use(cookieParser());
+
+app.get("/", (request, response) => {
+  response.cookie("campusLocation", "College Park", { httpOnly: true });
+  response.send("We set a cookie named campusLocation with a value of College Park");
+});
+
+app.get("/setMascotCookie", (request, response) => {
+  response.cookie("mascot", "testudo", { httpOnly: true });
+  response.send("We set a cookie named mascot that has the value testudo");
+});
+
+app.get("/check", (request, response) => {
+   console.log(request.cookies.mascot);
+   response.send(`Value of mascot cookie: ${request.cookies.mascot}`);
+ });
+
+console.log(`Server listening on port ${portNumber}`);
+const homeURL = `http://localhost:${portNumber}`;
+console.log(homeURL);
+console.log(`${homeURL}/setMascotCookie`);
+console.log(`${homeURL}/check`);
+
+app.listen(portNumber);

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Cookies/package.json

+{
+  "name": "cookies",
+  "version": "1.0.0",
+  "description": "",
+  "main": "app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cookie-parser": "^1.4.6",
+    "express": "^4.18.1",
+    "nodemon": "^3.1.0"
+  }
+}

LectureCodeExamples/Week2/RouterCookiesSessionsCode/README.md

+# Info
+In VS Code do not open the folder RouterCookiesSessionsCode;
+open the Cookies, Router or Sessions folder to run the particular
+example.
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Router/README.md

+# Info 
+run npm i to install necessary modules 
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Router/app.js

+const express = require("express"); 
+const app = express(); 
+const portNumber = 3000;
+
+
+const buildings = require("./routes/buildings");
+const schoolDorms = require("./routes/schoolDorms");
+
+/* Treating like middleware. Use buildings.js file to handle 
+   endpoints that start with /buildings */
+app.use("/buildings", buildings);
+
+/* Treating like middleware. Use schoolDorms.js file to handle 
+   endpoints that start with /dorms.  Examples shows you
+   don't have to name file after part of the end point */
+app.use("/dorms", schoolDorms);
+
+
+app.use("/", (request, response) => {
+  response.send("/ in app.js ");
+});
+
+console.log(`Server listening on port ${portNumber}`)
+const homeURL = `http://localhost:${portNumber}`;
+console.log(homeURL);
+
+/* buildings URLs */
+const buildingsURL = `${homeURL}/buildings`;
+const buildingsIribeURL = `${homeURL}/buildings/iribe`;
+console.log(buildingsURL);
+console.log(buildingsIribeURL);
+
+/* dorms URLs */
+const dormsURL = `${homeURL}/dorms`;
+const dormsLaPlataURL = `${homeURL}/dorms/laplata`;
+console.log(dormsURL);
+console.log(dormsLaPlataURL);
+
+app.listen(portNumber);
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Router/package.json

+{
+  "name": "routerscookies",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.18.1",
+    "express-router": "^0.0.1",
+    "nodemon": "^2.0.16"
+  }
+}

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Router/routes/buildings.js

+const express = require('express');
+const router = express.Router();
+
+/* router is like a mini application
+   endpoint that processes anything that
+   starts with /building
+*/
+
+/* We can add our own middleware that only
+   applies to buildings */
+
+
+// http://localhost:3000/buildings/
+router.get("/", (request, response) => {
+    response.send("/ in building.js")
+});
+
+// http://localhost:3000/buildings/iribe
+router.get("/iribe", (request, response) => {
+    response.send("/iribe in building.js")
+});
+
+// http://localhost:3000/buildings/notValid
+router.use((request, response) => {
+    response.status(404).send("Resource Not Found (in building router)");
+});
+ 
+ 
+module.exports = router;
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Router/routes/schoolDorms.js

+const express = require('express');
+const router = express.Router();
+
+/* router is like a mini application
+   endpoint that processes anything that
+   starts with /dorms
+*/
+
+/* We can add our own middleware that only
+   applies to dorms */
+
+// http://localhost:3000/dorms
+router.get("/", (request, response) => {
+    response.send("/ in dorms.js")
+});
+
+http://localhost:3000/dorms/laplata
+router.get("/laplata", (request, response) => {
+    response.send("/laplata in dorms.js")
+});
+
+module.exports = router;
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Sessions/README.md

+# Info
+run npm i to install necessary modules 
\ No newline at end of file

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Sessions/app.js

+const express = require("express");
+const app = express();
+const session = require("express-session");
+const cookieParser = require("cookie-parser");
+const bodyParser = require("body-parser");
+const portNumber = 3000;
+
+app.use(bodyParser.urlencoded({ extended: false }));
+app.use(cookieParser());
+app.use(
+  session({
+    resave: true,
+    saveUninitialized: false,
+    secret: "putsomethingsecretheredontshow", // use .env for secret string
+  })
+);
+
+app.post("/login", (request, response) => {
+  let message;
+
+  /* 
+   * Do not put passwords like we are doing; this is just to practice sessions. 
+   * We are allowing two users: peter (password terps) and mary (password testudo) 
+   * This will allow us to simultaneously have two clients (use insomnia for one 
+   * Postman for the other) 
+   */
+
+  if ( (request.body.user === "peter" && request.body.password === "terps") || 
+       (request.body.user === "mary" && request.body.password === "testudo") ) {
+    request.session.user = request.body.user;
+    request.session.cart = "";
+    request.session.save();
+    message = "User has logged in";
+  } else {
+    message = "Invalid user";
+  }
+  response.send(message);
+});
+
+app.get("/browse", (request, response) => {
+  let message;
+  if (request.session.user != undefined) {
+    message = `Welcome back ${request.session.user}, browse`;
+  } else {
+    message = "You have not logged in";
+  }
+  response.send(message);
+});
+
+app.post("/buy", (request, response) => {
+  let message;
+
+  if (request.session.user != undefined) {
+    request.session.cart += request.body.item + " ";
+    message = `${request.body.item} added to your cart`;
+  } else {
+    message = "You have not logged in";
+  }
+  response.send(message);
+});
+
+app.post("/checkout", (request, response) => {
+  let message;
+
+  if (request.session.user != undefined) {
+    message = `Items you are buying are ${request.session.cart}`;
+  } else {
+    message = "You have not logged in";
+  }
+  response.send(message);
+});
+
+app.post("/logout", (request, response) => {
+  let message;
+
+  if (request.session.user != undefined) {
+    request.session.destroy();
+    message = "You have logged out";
+  } else {
+    message = "You were not logged in";
+  }
+  response.send(message);
+});
+
+console.log(`Server listening on port ${portNumber}`);
+app.listen(portNumber);

LectureCodeExamples/Week2/RouterCookiesSessionsCode/Sessions/package.json

+{
+  "name": "cookies",
+  "version": "1.0.0",
+  "description": "",
+  "main": "app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "body-parser": "^1.20.0",
+    "cookie-parser": "^1.4.6",
+    "express": "^4.18.1",
+    "express-session": "^1.17.2",
+    "nodemon": "^2.0.16"
+  }
+}

LectureCodeExamples/Week2/RouterCookiesSessionsCode/package-lock.json

+{
+  "name": "RouterCookiesSessionsCode",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {}
+}