OpenAI Acquires Jony Ive's io in a $6.5 Billion All-Stock Deal

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddOpenApi();
builder.Services.AddSingleton<IOrderStatusService, InMemoryOrderStatusService>();

var app = builder.Build();
app.MapOpenApi(); // serves the document at /openapi/v1.json

app.MapGet("/orders/{orderNumber}/status", async (
        string orderNumber, IOrderStatusService orders, CancellationToken ct) =>
        await orders.FindAsync(orderNumber, ct) is { } status
            ? Results.Ok(status)
            : Results.NotFound())
    .WithName("GetOrderStatus")
    .WithSummary("Gets the shipping status of one order.")
    .WithDescription("Returns the fulfillment stage and estimated delivery date.")
    .Produces<OrderStatus>()
    .ProducesProblem(StatusCodes.Status404NotFound);

app.Run();

public sealed record OrderStatus(string OrderNumber, string Stage, DateOnly? EstimatedDelivery);

public interface IOrderStatusService
{
    Task<OrderStatus?> FindAsync(string orderNumber, CancellationToken ct);
}

public sealed class InMemoryOrderStatusService : IOrderStatusService
{
    public Task<OrderStatus?> FindAsync(string orderNumber, CancellationToken ct) =>
        Task.FromResult<OrderStatus?>(orderNumber == "1042"
            ? new OrderStatus(orderNumber, "Shipped", DateOnly.FromDateTime(DateTime.Today))
            : null);
}