Program.cs

using Ardalis.Result.AspNetCore;
using Ardalis.Result.Sample.Core.DTOs;
using Ardalis.Result.Sample.Core.Services;
using Microsoft.AspNetCore.Localization;
using System.Globalization;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddScoped<WeatherService>();
builder.Services.AddLocalization(opt => { opt.ResourcesPath = "Resources"; });
builder.Services.Configure<RequestLocalizationOptions>(options =>
{
    var supportedCultures = new List<CultureInfo>
        {
            new CultureInfo("en-US"),
            new CultureInfo("de-DE"),
        };
    options.DefaultRequestCulture = new RequestCulture("en-US");
    options.SupportedCultures = supportedCultures;
    options.SupportedUICultures = supportedCultures;
});

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.MapPost("/Forecast/New", (ForecastRequestDto request, WeatherService weatherService) =>
{
    return weatherService.GetForecast(request).ToMinimalApiResult();
})
.WithName("NewWeatherForecast");

app.Run();