From fc943c41859d73581bb2f7d6b4670110501481f8 Mon Sep 17 00:00:00 2001
From: Parvesshrajh <parvesshrajhsivakumar@gmail.com>
Date: Thu, 23 Apr 2026 19:30:25 +0530
Subject: [PATCH 1/2] add signup, login, questions and submissions endpoints
 with basic logic

---
 index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.js b/index.js
index e189e725..3ebadcef 100644
--- a/index.js
+++ b/index.js
@@ -20,6 +20,7 @@ const SUBMISSION = [
 
 app.post('/signup', function(req, res) {
   // Add logic to decode body
+  
   // body should have email and password
 
 

From c5ea8ea915022b94846e9fd4af3cd3fa13df59ae Mon Sep 17 00:00:00 2001
From: Parvesshrajh <parvesshrajhsivakumar@gmail.com>
Date: Thu, 23 Apr 2026 19:53:22 +0530
Subject: [PATCH 2/2] feat: add signup, login, questions and submissions
 endpoints with basic logic

---
 index.js | 86 +++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 54 insertions(+), 32 deletions(-)

diff --git a/index.js b/index.js
index 3ebadcef..cfb79533 100644
--- a/index.js
+++ b/index.js
@@ -2,15 +2,17 @@ const express = require('express')
 const app = express()
 const port = 3001
 
+app.use(express.json()); // for reading json input properly
+
 const USERS = [];
 
 const QUESTIONS = [{
-    title: "Two states",
-    description: "Given an array , return the maximum of the array?",
-    testCases: [{
-        input: "[1,2,3,4,5]",
-        output: "5"
-    }]
+  title: "Two states",
+  description: "Given an array , return the maximum of the array?",
+  testCases: [{
+    input: "[1,2,3,4,5]",
+    output: "5"
+  }]
 }];
 
 
@@ -18,57 +20,77 @@ const SUBMISSION = [
 
 ]
 
-app.post('/signup', function(req, res) {
+app.post('/signup', function (req, res) {
   // Add logic to decode body
-  
   // body should have email and password
-
-
+  const { email, password } = req.body;
   //Store email and password (as is for now) in the USERS array above (only if the user with the given email doesnt exist)
+  const userExists = USERS.find(u => u.email === email);
 
+  if (userExists) {
+    return res.status(400).json({ message: "User already exists" });
+  }
 
+  USERS.push({ email, password });
   // return back 200 status code to the client
-  res.send('Hello World!')
-})
+  res.status(200).json({ message: "User signup successfully " });
+});
 
-app.post('/login', function(req, res) {
+app.post('/login', function (req, res) {
   // Add logic to decode body
   // body should have email and password
-
+  const { email, password } = req.body;
   // Check if the user with the given email exists in the USERS array
-  // Also ensure that the password is the same
-
+  const user = USERS.find(u => u.email === email);
 
+  if (!user) {
+    res.status(401).json({ message: "User not found" });
+  }
+  // Also ensure that the password is the same
+  // If the password is not the same, return back 401 status code to the client
+  if (user.password !== password) {
+    return res.status(401).json({ message: "Incorrect password" });
+  }
   // If the password is the same, return back 200 status code to the client
   // Also send back a token (any random string will do for now)
-  // If the password is not the same, return back 401 status code to the client
-
-
-  res.send('Hello World from route 2!')
-})
-
-app.get('/questions', function(req, res) {
+  const token = Math.random().toString();
+  res.status(200).json({ message: "Login successful", token });
+});
 
+app.get('/questions', function (req, res) {
   //return the user all the questions in the QUESTIONS array
-  res.send("Hello World from route 3!")
+  res.status(200).json(QUESTIONS);
 })
 
-app.get("/submissions", function(req, res) {
-   // return the users submissions for this problem
-  res.send("Hello World from route 4!")
+app.get("/submissions", function (req, res) {
+  // return the users submissions for this problem
+  res.status(200).json(SUBMISSION);
 });
 
 
-app.post("/submissions", function(req, res) {
-   // let the user submit a problem, randomly accept or reject the solution
-   // Store the submission in the SUBMISSION array above
-  res.send("Hello World from route 4!")
+app.post("/submissions", function (req, res) {
+  // let the user submit a problem, randomly accept or reject the solution
+  // Store the submission in the SUBMISSION array above
+  const {email, problemTitile, solution } = req.body;
+
+  const accepted = Math.random() > 0.5;
+  
+  const submission = {
+    email,
+    problemTitile,
+    solution,
+    status: accepted ? "Accepted" : "Rejected"
+  };
+
+  SUBMISSION.push(submission);
+
+  res.status(200).json(submission);
 });
 
 // leaving as hard todos
 // Create a route that lets an admin add a new problem
 // ensure that only admins can do that.
 
-app.listen(port, function() {
+app.listen(port, function () {
   console.log(`Example app listening on port ${port}`)
 })
\ No newline at end of file