●
LIVE DEMO
Generated using
Instruct UI - An AI for Blazor UI Generation
## What's implemented
- Product selection area with search box, category chips, and a responsive product grid.
- ProductCard components that show emoji, price, original price (optional) and Add to Cart button.
- Current Order panel with OrderItemCard components, quantity increase/decrease, remove item, subtotal/tax/total and a checkout action.
- Sidebar navigation with active state and logout button.
- Client-side filtering (category + search), cart state management, and totals calculation (subtotal, tax, total).
## Key components
- PosPage.razor (page container)
- Sidebar.razor (navigation)
- ProductCard.razor (product display + Add to Cart)
- OrderItemCard.razor (cart line UI with qty controls)
- Models: NavigationItemModel, ProductModel, OrderItemModel
## How it works
- Data is initialized in OnInitialized with in-memory lists (allProducts, categories).
- Search uses an <input> bound via @bind (oninput) to filter products in real time.
- Category chips call FilterByCategory to update displayedProducts using LINQ.
- ProductCard emits OnAddToCart via EventCallback<ProductModel>; PosPage handles adding/updating OrderItemModel instances.
- OrderItemCard exposes EventCallback handlers for increase, decrease and remove which update quantities and recalc totals.
- Totals are computed in CalculateTotals() and UI updates use StateHasChanged after state changes.
## Styling
- Tailwind CSS utility classes are used throughout (flex, grid, gap-*, px-*, text-slate-*, rounded-*, shadow-*, sm:grid-cols-2, lg:grid-cols-3, xl:grid-cols-4).
- Responsive product grid adapts by Tailwind breakpoints (sm/lg/xl) and the layout uses a fixed 64px sidebar width with a flexible main column.
- Visual affordances include hover transforms on product cards, disabled states for out-of-stock buttons, and sticky header.
## Reuse steps
1. Add Tailwind to the Blazor project and include Font Awesome (or replace icons).
2. Copy PosPage.razor, Sidebar.razor, ProductCard.razor, OrderItemCard.razor and PosModels.cs into the project.
3. Import namespaces if components live in a folder (e.g., @using YourApp.Components).
4. Replace in-memory product initialization with a service/HTTP client returning ProductModel.
5. Wire persistence and payment integration (checkout button) and register any services in Program.cs.
## Limitations & next steps
- This is a single-page UI scaffold generated by Instruct UI and uses in-memory data; backend services (product API, orders, auth) are required for production.
- No payment gateway or order persistence is implemented; checkout button is a UI placeholder.
- Accessibility, i18n, input validation (e.g., quantity edge cases) and server-side stock reconciliation need to be added.
- Consider adding optimistic UI updates, optimistic locking for stock, persistent cart storage, and unit/integration tests.