Own

week-3/02-course-app-easy/index.js

@@ -1,52 +1,167 @@
 const express = require('express');
 const app = express();
+const bodyParser = require("body-parser");
+const cors = require('cors');
 
 app.use(express.json());
+// Middleware to parse JSON in the request body
+app.use(bodyParser.json());
+app.use(cors());
 
 let ADMINS = [];
 let USERS = [];
 let COURSES = [];
 
+function check(admin, pass){
+  for(let i=0;i<ADMINS.length;i++){
+    if(ADMINS[i].username==admin&&ADMINS[i].password==pass){
+      return false;
+    }
+  }
+  return true;
+}
+//for user
+function checkUser(user,pass){
+  for(let i=0;i<USERS.length;i++){
+    if(USERS[i].username==user&&USERS[i].password==pass){
+      return false;
+    }
+  }
+  return true;
+}
+function findIndex(arr, id){
+  for(let i=0;i<arr.length;i++){
+    if(arr[i].id==id)return id;
+  }
+  return -1;
+}
+
 // Admin routes
 app.post('/admin/signup', (req, res) => {
   // logic to sign up admin
+  if(check(req.body.username, req.body.password)){
+    const newAdmin = {
+      username: req.body.username,
+      password: req.body.password
+    }
+    ASMINS.push(newAdmin);
+    res.send("Admin created successfully");
+  }
 });
 
 app.post('/admin/login', (req, res) => {
   // logic to log in admin
+  //read username and password from headers
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!check(username,password)){
+    res.status(200).send("Logged in successfully");
+  }else{
+    res.status(401).send("Invalid Credentials")
+  }
 });
 
 app.post('/admin/courses', (req, res) => {
   // logic to create a course
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!check(username,password)){
+    const newCourse={
+      id: Math.floor(Math.random()*1000000),
+      title: req.body.title,
+      description: req.body.description,
+      price: req.body.price,
+      imageLink: req.body.imageLink
+    }
+    COURSES.push(newCourse);
+    res.status(200).send("Course created successfully");
+  }
 });
 
 app.put('/admin/courses/:courseId', (req, res) => {
   // logic to edit a course
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!check(username,password)){
+    const courseIndex=findIndex(COURSE, req.params.id);
+    if(courseIndex!=-1){
+      COURSES[courseIndex].title=req.body.title;
+      COURSES[courseIndex].description=req.body.desription;
+      COURSES[courseIndex].price=req.body.price;
+      COURSES[courseIndex].imageLink=req.body.imageLink;
+      COURSES[courseIndex].published=req.body.published;
+      res.status(200).send("Course updated succesfully");
+    }
+  }
 });
 
 app.get('/admin/courses', (req, res) => {
   // logic to get all courses
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!check(username,password)){
+    for(let i=0;i<COURSES.length;i++){
+      console.log(COURSES[i]);
+    }
+  }
 });
 
 // User routes
 app.post('/users/signup', (req, res) => {
   // logic to sign up user
+  const username=req.body.username;
+  const password=req.body.password;
+  if(checkUser(username, password)){
+    const newUser={
+      id:Math.floor(Math.random()*10000),
+      username:username,
+      password:password
+    }
+    USERS.push(newUser);
+    res.status(200).send("User created succesfully");
+  }
 });
 
 app.post('/users/login', (req, res) => {
   // logic to log in user
+  const username=req.headers['username'];
+  const password=req.headers['password'];
+  if(!checkUser(username, password)){
+    res.status(200).send("Logged in successfully");
+  }
 });
 
 app.get('/users/courses', (req, res) => {
   // logic to list all courses
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!checkUser(username,password)){
+    for(let i=0;i<COURSES.length;i++){
+      console.log(COURSES[i]);
+    }
+  }
 });
 
 app.post('/users/courses/:courseId', (req, res) => {
   // logic to purchase a course
+  const username=headers['username'];
+  const password=headers['password'];
+  if(!checkUser(username,password)){
+    const courseIndex=findIndex(COURSES,parseInt(req.params.courseId));
+    if(courseIndex!=-1){
+      const newCourse={
+        courseId:req.params.courseId,
+      }
+    }
+    res.status(200).send("Course purchesed succesfully");
+  }
 });
 
 app.get('/users/purchasedCourses', (req, res) => {
   // logic to view purchased courses
+  const username=headers['username'];
+  const password=headers['password'];
+  res.json({courses: COURSES.filter(c=>req.user.purchasedCourses.includes(c.id))});
 });
 
 app.listen(3000, () => {