static void Main(string[] args)
{
var agent = new SubscriptionAgent();
var publishers = new[]
{
new MagazinePublisher(agent, "Home Cooking"),
new MagazinePublisher(agent, "Sports Illustrated Inc"),
};
var subscribers = new[]
{
new MagazineSubscriber(agent, "John Smith"),
new MagazineSubscriber(agent, "Sally Smith"),
};
Console.WriteLine("The following magazine subscriptions are available:");
foreach (var magazine in agent.AvailableSubscriptions)
{
Console.WriteLine("- " + magazine);
}
subscribers[0].Subscribe("Holiday Cooking");
subscribers[1].Subscribe("Holiday Cooking");
subscribers[1].Subscribe("Sports Illustrated");
// John and Sally receive the magazine
publishers[0].Publish(new Magazine
{
Title = "Holiday Cooking",
Edition = "Winter 2020",
Content = new MemoryStream()
});
// Only Sally receives the magazine
publishers[1].Publish(new Magazine
{
Title = "Sports Illustrated",
Edition = "Spring 2020",
Content = new MemoryStream()
});
}
public MagazinePublisher(SubscriptionAgent agent, string name)
{
_agent = agent;
Name = name;
_agent.Register(name, this);
}
public MagazineSubscriber(SubscriptionAgent agent, string name)
{
_agent = agent;
Name = name;
}