Implemented shopping carts functionality elements

2026-05-06 10:48:02 +02:00
parent 83f51c6a23
commit 4321b03735
13 changed files with 341 additions and 5 deletions
@@ -0,0 +1,40 @@
+using LiteCharms.Infrastructure.Database;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class AddItemToShoppingCartCommandHandler(IDbContextFactory<LeadGeneratorDbContext> contextFactory) : IRequestHandler<AddItemToShoppingCartCommand, Result>
+{
+    public async ValueTask<Result> Handle(AddItemToShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ProductPrices.AnyAsync(c => c.Id == request.ProductPriceId, cancellationToken))
+                return Result.Fail($"Product item could not be found with id {request.ProductPriceId}");
+
+            var cart = await context.ShoppingCarts.FirstOrDefaultAsync(c => c.Id == request.ShoppingCartId, cancellationToken);
+
+            if (cart is null)
+                return Result.Fail($"Shopping cart could not be found with id {request.ShoppingCartId}");
+
+            if (cart.ShoppingCartItems?.Any(i => i.ProductPriceId == request.ProductPriceId) == true)
+                return Result.Fail($"Item already in shopping cart with id {request.ShoppingCartId}");
+
+            context.ShoppingCartItems.Add(new Entities.ShoppingCartItem
+            {
+                ShoppingCartId = request.ShoppingCartId,
+                ProductPriceId = request.ProductPriceId,
+                Quantity = request.Quantity
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Failed to add cart item with id {request.ProductPriceId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}