public void Update(ConcreteSubjectAccount account)
{
var state = account.State;
var data = account.Data;
if (state == LoginStatus.EXPIRED)
{
Console.WriteLine($"Account {data.Email} has expired. Email sent!");
}
}
public void Update(ConcreteSubjectAccount account)
{
var state = account.State;
var data = account.Data;
if (state == LoginStatus.INVALID)
{
Console.WriteLine($"Account {data.Email} with ip {data.IP} are trying to hack our system");
}
}
public void Update(ConcreteSubjectAccount account)
{
var state = account.State;
var data = account.Data;
if (state == LoginStatus.SUCCESS)
{
Console.WriteLine($"User {data.Email} vừa online");
}
}
public static void Run()
{
Console.WriteLine("===== Observer, Chain of Responsibility =====");
Console.WriteLine("\n");
var account = new ConcreteSubjectAccount();
var security = new ConcreteObserverSecurity();
var logger = new ConcreteObserverLogger();
var mailer = new ConcreteObserverMailer();
// Attach các observer vào subject
account.Attach(security);
account.Attach(logger);
account.Attach(mailer);
// Login
account.Login(new LoginRequestModel
{
Email = "*****@*****.**",
IP = "192.168.0.1"
});
// Change state
account.State = LoginStatus.EXPIRED;
account.Save();
// Login again
account.Login(new LoginRequestModel
{
Email = "*****@*****.**",
IP = "127.0.0.1"
});
// Xóa security observer
account.Detach(security);
account.Login(new LoginRequestModel
{
Email = "*****@*****.**",
IP = "127.0.0.2"
});
Console.WriteLine("\n");
}