The _addToCart method adds a specified product variant to the user's shopping cart. It handles authentication, manages the cart token, and updates local storage with the latest cart data. This method uses async/await syntax for cleaner and more manageable asynchronous code.
This method is used to add products to the shopping cart from various parts of your application, such as product detail pages, product listings, or quick view modals.
2.
Managing Cart Token:
For authenticated users, the method ensures the cart token is available and up-to-date. It fetches a new token if needed and updates local storage accordingly.
3.
Updating Cart State and UI:
The method updates the cart in local storage and emits a "cart-changed" event, which can trigger UI updates or other actions related to cart changes, like updating the cart icon or displaying a notification.
Async/Await Syntax: The method uses async/await for handling asynchronous operations, making the code more readable and easier to debug compared to traditional promise chains.
Error Handling: The method includes a try/catch block to handle errors that might occur during the API requests. If an error occurs, it returns the error response.
Local Storage Management: The method manages local storage to ensure the cart state is maintained across different parts of the application and between sessions.
Event Emission: After updating the cart, the method emits a "cart-changed" event, allowing other parts of the application to react to the cart update.
This method provides a robust and efficient way to add items to the shopping cart, handle authentication, and manage cart state in an e-commerce application.
