QR Code Login Like Whatsapp Webapp With Angular 7 + Ionic 4

Create a user model class as a JPA entity with an auto-generated id, name, user name, password, and a role enum, including getters and setters for database mapping.

Create a user model in the MVC structure by defining a user class with default fields in the client-side model package, setting up data structure and architecture.

Implement an authentication service that connects to a Spring server via REST API, using HTTP and observables to perform login, registration, and logout, and get users with encrypted headers.

Implement a login controller by wiring the authentication service (observable), user model, and router to submit credentials, display error messages, and navigate to the profile page after login.

Install dependencies for a qr code login app using Angular 7 and Ionic 4, including web socket library and client, then create a mobile page for the qr code feature.

Configure an angular project by adding router sources for new components, import QR codes module, and set a global variable for the stomp chest library used by the Admiralty module.

Update authentication service to support qr code login by adding a method that sends post requests to the rest login api with json data and stores results in local storage.

Implement mobile controllers and authentication flow, establish a socket connection, subscribe to a session channel, and navigate to the profile page after authentication, while displaying a QR code for login.

implement a user list controller and view using ionic list to display all users, fetch them via the authentication service, and navigate to user detail pages with the router.