test

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "liveServer.settings.multiRootWorkspaceName": "node-express-course"
+}

02-express-tutorial/app.js

@@ -1 +1,18 @@
-console.log('Express Tutorial')
+const express = require("express");
+const app = express();
+const port = 5000;
+const people = require("./routes/people"); // import router from given folder
+const auth = require("./routes/auth"); // import router from given folder
+
+app.use(express.static("./methods-public")); // use these static files for the app
+app.use(express.urlencoded({ extended: false })); // use urlencoder middleware to parse html body for data
+app.use(express.json()); // this middleware parses data from JSON file type.
+
+//controllers
+app.use("/api/people", people); // set people router for /api/people url
+app.use("/login", auth); //set login router for /login
+
+//listen
+app.listen(port, () => {
+  console.log(`listening on port ${port}`); // listen on predefined port
+});

02-express-tutorial/authorize.js

@@ -0,0 +1,14 @@
+const authorize = (req, res, next) => {
+  const { user } = req.query; // read the user value from query
+  if (user) {
+    // if it has user data, set it as req.user so we can record and use it
+    req.user = user;
+    console.log(user);
+    next(); // dont forget this since it needs to read next function
+  } else {
+    // if user value is empty then give 401 unauthorized error
+    res.status(401).send("unauthorized entry"); // dont put next here since we dont want to send more data
+    // next();  // we are sending two res. sends in one request which gives error
+  }
+};
+module.exports = authorize;

02-express-tutorial/controllers/people.js

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+const { people } = require("../data"); // import people array to use it here
+
+const getPeople = (req, res) => {
+  //GET
+  res.status(200).json({ success: true, data: people }); //send json object with success true and people array
+};
+const createPerson = (req, res) => {
+  //POST
+  const { name } = req.body; // destructure name property from the body.
+  if (name) {
+    res.status(201).json({ success: true, person: name }); // 201 is successfull post request. Send a Json file with new persons name
+  } else {
+    res.status(400).json({ success: false, msg: "please provide a name" }); // if form is empty, throw an error message in your req.body file.Bad request
+  }
+};
+const createPersonPostman = (req, res) => {
+  //POST on postman url
+  const { name } = req.body; // destructure name property from the body.
+  if (name) {
+    res.status(201).json({ success: true, data: [...people, { name: name }] }); // add name data to at the end of people array  ... add to the end
+  } else {
+    res.status(400).json({ success: false, msg: "please provide a name" }); // if form is empty, throw an error message in your req.body file.Bad request
+  }
+};
+const updatePerson = (req, res) => {
+  //PUT
+  const { id } = req.params; //destruct id param from params
+  const { name } = req.body; //destruct name from body
+  const person = people.find((person) => person.id === Number(id)); //reference a person object from people array with given id
+
+  if (!person) {
+    //if a person with given id doesnt exist, throw an error
+    return res
+      .status(400)
+      .json({ success: false, msg: "please provide a valid id" }); // if id cant be found give error
+  }
+  const newPeople = people.map((person) => {
+    // if id exists, create a new people array since you cant edit them in js.
+    if (person.id === Number(id)) {
+      //Find person with given id in the array and change its name value to new one
+      person.name = name;
+    }
+
+    return person; // return new object with edited name
+  });
+  res.status(201).json({ success: true, data: newPeople }); // send newPeople instead of people since we changed the array
+};
+
+const deletePerson = (req, res) => {
+  //DELETE
+  const { id } = req.params; //destruct id param from params
+  const person = people.find((person) => person.id === Number(id)); //reference a person object from people array with given id
+
+  if (!person) {
+    //if a person with given id doesnt exist, throw an error
+    return res
+      .status(400)
+      .json({ success: false, msg: "Such id doesnt exist" }); // if id cant be found give error
+  }
+  const newPeople = people.filter((person) => person.id !== Number(id)); // filter a new array with elements not matching the given id
+  // how to delete array elements in js
+  res.status(201).json({ success: true, data: newPeople }); // send newPeople array with deleted element
+};
+
+module.exports = {
+  getPeople,
+  createPerson,
+  createPersonPostman,
+  updatePerson,
+  deletePerson,
+}; // export and object with functions

02-express-tutorial/logger.js

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+//middleware works inbetween req and res
+const logger = function (req, res, next) {
+  //express.js automatically links req res and next from http api
+  const method = req.method;
+  const url = req.url;
+  const date = new Date().getFullYear();
+  console.log(method, url, date);
+  next(); // go to next middleware, last one is res DONT FORGET THIS
+};
+module.exports = logger; // export this method