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Crie um novo projeto "ASP.NET Core Empty"
Program.cs
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
app.Use(async (context, next) =>
{
await next(context);
if (context.Response.StatusCode == 404)
{
await context.Response.WriteAsync("404-Pagina nao localizada");
}
});
app.MapGet("/pizzas/{id}", (int id) => PizzaDB.GetPizza(id));
app.MapGet("/pizzas", () => PizzaDB.GetPizzas());
app.MapPost("/pizzas", (Pizza pizza) => PizzaDB.NovaPizza(pizza));
app.MapPut("/pizzas", (Pizza pizza) => PizzaDB.AtualizarPizza(pizza));
app.MapDelete("/pizzas/{id}", (int id) => PizzaDB.RemovePizza(id));
app.Run();
PizzaDB.cs
public record Pizza
{
public int Id { get; set; }
public string? Nome { get; set; }
public decimal Valor { get; set; }
}
public class PizzaDB
{
private static List<Pizza> _pizzas = new List<Pizza>()
{
new Pizza{ Id=1, Nome="Camarão", Valor=89.99M },
new Pizza{ Id=2, Nome="Da Casa", Valor=105.05M},
new Pizza{ Id=3, Nome="Margerita", Valor=56.11M}
};
public static List<Pizza> GetPizzas()
{
return _pizzas;
}
public static Pizza? GetPizza(int id)
{
return _pizzas.SingleOrDefault(pizza => pizza.Id == id);
}
public static Pizza NovaPizza(Pizza pizza)
{
_pizzas.Add(pizza);
return pizza;
}
public static Pizza AtualizarPizza(Pizza update)
{
_pizzas = _pizzas.Select(pizza =>
{
if (pizza.Id == update.Id)
{
pizza.Nome = update.Nome;
pizza.Valor = update.Valor;
}
return pizza;
}).ToList();
return update;
}
public static void RemovePizza(int id)
{
_pizzas = _pizzas.FindAll(pizza => pizza.Id != id).ToList();
}
}