Merge pull request 'taskcancellation' (#131) from taskcancellation into master

Reviewed-on: #131

LiteCharms.Features.MidrandBooks/Orders/OrderService.cs

@@ -43,7 +43,7 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
             if (!await context.Orders.AnyAsync(o => o.Id == orderId, cancellationToken))
                 return Result.Fail<long>("Order not found.");
 
-            if(!await context.Books.AnyAsync(ab => ab.Id == request.AuthorBookId, cancellationToken))
+            if (!await context.Books.AnyAsync(ab => ab.Id == request.AuthorBookId, cancellationToken))
                 return Result.Fail<long>("Author book not found.");
 
             if (!await context.Prices.AnyAsync(pp => pp.Id == request.ProductPriceId, cancellationToken))
@@ -51,7 +51,7 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
 
             var existingItem = await context.OrderItems.FirstOrDefaultAsync(i => i.ProductPriceId == request.ProductPriceId && i.OrderId == orderId, cancellationToken);
 
-            if(existingItem is not null)
+            if (existingItem is not null)
             {
                 existingItem.Quantity += request.Quantity;
 
@@ -82,7 +82,7 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
     {
         try
         {
-            if(items.Length == 0)
+            if (items.Length == 0)
                 return Result.Fail("No items to add.");
 
             await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
@@ -203,13 +203,33 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
         }
     }
 
+    public async ValueTask<Result<OrderItem[]>> GetOrderItemsAsync(long orderId, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var orderItems = await context.OrderItems
+                .Where(o => o.OrderId == orderId)
+                .ToListAsync(cancellationToken);
+
+            return orderItems.Count > 0
+                ? Result.Ok(orderItems.Select(i => i.ToModel()).ToArray())
+                : Result.Fail<OrderItem[]>($"Order items not found for order ID {orderId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+
     public async ValueTask<Result<Order[]>> GetOrdersByCustomerAsync(long customerId, CancellationToken cancellationToken = default)
     {
         try
         {
             await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
 
-            if(!await context.Customers.AnyAsync(c => c.Id == customerId, cancellationToken))
+            if (!await context.Customers.AnyAsync(c => c.Id == customerId, cancellationToken))
                 return Result.Fail<Order[]>("Customer not found.");
 
             var orders = await context.Orders
@@ -276,16 +296,16 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
         {
             await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
 
-            if(!await context.Orders.AnyAsync(o => o.Id == orderId, cancellationToken))
+            if (!await context.Orders.AnyAsync(o => o.Id == orderId, cancellationToken))
                 return Result.Fail("Order not found.");
 
-            if(!await context.Addresses.AnyAsync(a => a.Id == request.AddressId, cancellationToken))
+            if (!await context.Addresses.AnyAsync(a => a.Id == request.AddressId, cancellationToken))
                 return Result.Fail("Address not found.");
 
-            if(!await context.ShippingProviders.AnyAsync(sp => sp.Id == request.ShippingProviderId && sp.Enabled, cancellationToken))
+            if (!await context.ShippingProviders.AnyAsync(sp => sp.Id == request.ShippingProviderId && sp.Enabled, cancellationToken))
                 return Result.Fail("Shipping provider not found or disabled.");
 
-            if(await context.Shippings.AnyAsync(s => s.OrderId == orderId, cancellationToken))
+            if (await context.Shippings.AnyAsync(s => s.OrderId == orderId, cancellationToken))
                 return Result.Fail("Shipping already exists for this order.");
 
             var shipping = context.Shippings.Add(new Entities.Shipping
@@ -398,7 +418,7 @@ public sealed class OrderService(IDbContextFactory<MidrandBooksDbContext> contex
         {
             await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
 
-            if(await context.ShippingProviders.AnyAsync(sp => sp.Type == request.Type, cancellationToken))
+            if (await context.ShippingProviders.AnyAsync(sp => sp.Type == request.Type, cancellationToken))
                 return Result.Fail("Shipping provider with the same type already exists.");
 
             var shippingProvider = context.ShippingProviders.Add(new Entities.ShippingProvider