sahilshahane test

cypress/e2e/login.cy.js

@@ -1,2 +1,38 @@
-describe('Login Component', () => {
-}) 
+describe("Login Component", () => {
+  beforeEach(() => {
+    cy.visit("/LoginForm"); // Change this route according to your setup
+  });
+
+  it("should render the login form with inputs and button", () => {
+    cy.get("form.login-form").should("exist");
+    cy.get('input[name="name"]').should("exist");
+    cy.get('input[name="password"]').should("exist");
+    cy.get('button[type="submit"]').should("contain", "Login");
+  });
+
+  it("should allow typing into name and password fields", () => {
+    cy.get('input[name="name"]').type("john");
+    cy.get('input[name="name"]').should("have.value", "john");
+
+    cy.get('input[name="password"]').type("secret123");
+    cy.get('input[name="password"]').should("have.value", "secret123");
+  });
+
+  it("should submit the form and log-in successfully", () => {
+    cy.get('input[name="name"]').type("sahil");
+    cy.get('input[name="password"]').type("12345678");
+    cy.get('button[type="submit"]').click();
+
+    cy.get("#welcome-screen", { timeout: 10000 }).should("be.visible");
+  });
+
+  it("should handle login error gracefully", () => {
+    cy.get('input[name="name"]').type("wronguser");
+    cy.get('input[name="password"]').type("wrongpass");
+    cy.get('button[type="submit"]').click();
+
+    cy.get("#login-error", { timeout: 10000 }).should("be.visible");
+
+    cy.contains("Invalid username or password").should("be.visible");
+  });
+});

package.json

@@ -41,6 +41,7 @@
   },
   "devDependencies": {
     "@testing-library/cypress": "^10.0.3",
+    "@types/react": "^19.1.4",
     "cypress": "^14.3.3",
     "start-server-and-test": "^2.0.12"
   }

src/App.js

@@ -1,32 +1,32 @@
-import React, { useState } from 'react';
-import './App.css';
-import LoginForm from './components/LoginForm';
-import Welcome from './components/Welcome';
+import React, { useState } from "react";
+import "./App.css";
+import LoginForm from "./components/LoginForm";
+import Welcome from "./components/Welcome";
+import {
+  AuthContext,
+  AuthProvider,
+} from "./providers/AuthProvider/AuthProvider";
+import { useUserLogin } from "./hooks/useUserLogin";
+import { useContext } from "react";
+import { useUserLogout } from "./hooks/useUserLogout";
 
-function App() {
-  const [isLoggedIn, setIsLoggedIn] = useState(false);
-  const [userName, setUserName] = useState('');
-
-  const handleLogin = (formData) => {
-    // In a real app, you would validate credentials here
-    setIsLoggedIn(true);
-    setUserName(formData.name);
-  };
-
-  const handleLogout = () => {
-    setIsLoggedIn(false);
-    setUserName('');
-  };
+const HTMLBody = () => {
+  const authInfo = useContext(AuthContext);
+  if (!authInfo.init) return <></>;
 
   return (
     <div className="App">
-      {isLoggedIn ? (
-        <Welcome userName={userName} onLogout={handleLogout} />
-      ) : (
-        <LoginForm onLogin={handleLogin} />
-      )}
+      {authInfo?.user?.name ? <Welcome /> : <LoginForm />}
     </div>
   );
+};
+
+function App() {
+  return (
+    <AuthProvider>
+      <HTMLBody />
+    </AuthProvider>
+  );
 }
 
 export default App;

src/components/LoginForm.css

@@ -13,6 +13,7 @@
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
   width: 100%;
   max-width: 400px;
+  margin: 0 auto;
 }
 
 .login-form h2 {
@@ -55,6 +56,7 @@
   font-size: 1rem;
   cursor: pointer;
   transition: background-color 0.2s;
+  margin-bottom: 1rem;
 }
 
 .login-button:hover {
@@ -64,4 +66,14 @@
 .login-button:focus {
   outline: none;
   box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
-} 
+}
+
+#login-error {
+  width: 100%;
+  padding: 0.75rem 0;
+  background-color: #dc3545;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  font-size: 1rem;
+}

src/components/LoginForm.js → src/components/LoginForm.jsx

@@ -1,23 +1,37 @@
-import React, { useState } from 'react';
-import './LoginForm.css';
+import { useState } from "react";
+import "./LoginForm.css";
+import { useUserLogin, LOGIN_STATUS } from "../hooks/useUserLogin";
+
+function LoginForm() {
+  const { Login: onLogin, loginStatus, errorMessage } = useUserLogin();
 
-function LoginForm({ onLogin }) {
   const [formData, setFormData] = useState({
-    name: '',
-    password: ''
+    name: "",
+    password: "",
   });
 
   const handleChange = (e) => {
     const { name, value } = e.target;
-    setFormData(prevState => ({
+
+    setFormData((prevState) => ({
       ...prevState,
-      [name]: value
+      [name]: value,
     }));
   };
 
+  const handleFormSubmit = (e) => {
+    e.preventDefault();
+
+    // Make Login API call
+    onLogin(formData.name, formData.password).catch((error) => {
+      console.error("Something went wrong while logging in");
+      console.error(error);
+    });
+  };
+
   return (
     <div className="login-form-container">
-      <form className="login-form">
+      <form className="login-form" onSubmit={handleFormSubmit}>
         <h2>Login</h2>
         <div className="form-group">
           <label htmlFor="name">Name:</label>
@@ -28,6 +42,7 @@ function LoginForm({ onLogin }) {
             value={formData.name}
             onChange={handleChange}
             required
+            disabled={loginStatus === LOGIN_STATUS.LOADING}
           />
         </div>
         <div className="form-group">
@@ -38,15 +53,19 @@ function LoginForm({ onLogin }) {
             name="password"
             value={formData.password}
             onChange={handleChange}
+            disabled={loginStatus === LOGIN_STATUS.LOADING}
             required
           />
         </div>
         <button type="submit" className="login-button">
           Login
         </button>
+        {loginStatus === LOGIN_STATUS.ERROR && (
+          <div id="login-error">{errorMessage || "Something went wrong"}</div>
+        )}
       </form>
     </div>
   );
 }
 
-export default LoginForm; 
+export default LoginForm;

src/components/Welcome.jsx

@@ -0,0 +1,24 @@
+import React from "react";
+import "./Welcome.css";
+import { AuthContext } from "../providers/AuthProvider/AuthProvider";
+import { useContext } from "react";
+import { useUserLogout } from "../hooks/useUserLogout";
+
+function Welcome() {
+  const authInfo = useContext(AuthContext);
+  const { Logout: onLogout } = useUserLogout();
+
+  return (
+    <div id="welcome-screen" className="welcome-container">
+      <div className="welcome-card">
+        <h1>Welcome, {authInfo?.user?.name}!</h1>
+        <p>You have successfully logged in.</p>
+        <button onClick={onLogout} className="logout-button">
+          Logout
+        </button>
+      </div>
+    </div>
+  );
+}
+
+export default Welcome;

src/constants/auth.js

@@ -0,0 +1 @@
+export const LOCALSTORAGE_USERNAME_KEY = "username";

src/hooks/useUserLogin.js

@@ -0,0 +1,38 @@
+import { useContext } from "react";
+import { AuthContext } from "../providers/AuthProvider/AuthProvider";
+import { useState } from "react";
+import { LOCALSTORAGE_USERNAME_KEY } from "../constants/auth";
+
+export const LOGIN_STATUS = {
+  LOADING: 1,
+  ERROR: 2,
+  SUCCESS: 3,
+};
+
+export const useUserLogin = () => {
+  const authContext = useContext(AuthContext);
+  const [loginStatus, setLoginStatus] = useState(0);
+  const [errorMessage, setErrorMessage] = useState("");
+
+  /**
+   * @param name {string}
+   * @param password {string}
+   */
+  const Login = async (name, password) => {
+    if (loginStatus === LOGIN_STATUS.LOADING) return;
+    setLoginStatus(LOGIN_STATUS.LOADING);
+
+    // Make API call to Backend server, but since this is a small frontend only assignment.
+    // i'll just hardcode username & password
+    if (name !== "sahil" || password !== "12345678") {
+      setErrorMessage("Invalid username or password");
+      setLoginStatus(LOGIN_STATUS.ERROR);
+    } else {
+      authContext.setUser({ name });
+      localStorage.setItem(LOCALSTORAGE_USERNAME_KEY, name);
+      setLoginStatus(LOGIN_STATUS.SUCCESS);
+    }
+  };
+
+  return { Login, loginStatus, errorMessage };
+};

src/hooks/useUserLogout.js

@@ -0,0 +1,30 @@
+import { useContext } from "react";
+import { AuthContext } from "../providers/AuthProvider/AuthProvider";
+import { useState } from "react";
+import { LOCALSTORAGE_USERNAME_KEY } from "../constants/auth";
+
+export const LOGOUT_STATUS = {
+  LOADING: 1,
+  ERROR: 2,
+  SUCCESS: 3,
+};
+
+export const useUserLogout = () => {
+  const authContext = useContext(AuthContext);
+  const [logoutStatus, setLogoutStatus] = useState(0);
+
+  const Logout = async () => {
+    if (logoutStatus === LOGOUT_STATUS.LOADING) return;
+    setLogoutStatus(LOGOUT_STATUS.LOADING);
+
+    // Make API call to Backend server to logout and invalidate the current credentials,
+    // but since this is a small frontend only assignment.
+    // i'll just remove the user from Browser's memory
+    authContext.setUser(undefined);
+    localStorage.removeItem(LOCALSTORAGE_USERNAME_KEY);
+
+    setLogoutStatus(LOGOUT_STATUS.SUCCESS);
+  };
+
+  return { Logout, logoutStatus };
+};