/// <summary>
/// This example uses the Prototype creational pattern to help build a hypothetical Dining Room Designer.
/// Users of the application can copy icons representing furniture to compose collections of objects at runtime.
/// This Console Application is a mock example of some steps that might be part of client-side code for
/// generating these shapes by deep-copying them from a prototype as a means of construction.
/// It might also be the case that our client application does not have anything to work with except
/// the roomDesigner instance - we might not be have the ability to __construct__ any of the objects, including the
/// IChairIcon, ITableIcon, or PrototypeFactory instances. In such cases, the ability for the PrototypeFactory
/// to expose a public API for creating complex underlying objects is crucial to our being able to use these objects
/// in our client-side code.
/// </summary>
/// <returns></returns>
private static void Main()
{
var logger = new ConsoleLogger();
logger.LogInfo("📝 Welcome Dining Room Designer!");
// Construct prototype instances of furniture icons and a PrototypeFactory.
var chairPrototype = new OakChairIcon();
var tablePrototype = new OakTableIcon();
var roomDesigner = new PrototypeFactory(tablePrototype, chairPrototype, logger);
// Use the RoomDesigner to create instances of furniture icons.
var chair1 = roomDesigner.CloneChair();
var chair2 = roomDesigner.CloneChair();
var chair3 = roomDesigner.CloneChair();
var chair4 = roomDesigner.CloneChair();
var table1 = roomDesigner.CloneTable();
var chairs = new List <IChairIcon> {
chair1, chair2, chair3, chair4
};
var numberOfSeatCushionsToOrder = chairs.Count(chair => chair.HasSeatCushions);
var numberOfTableLegs = table1.GetTableNumberOfLegs();
var tableShape = table1.GetTableTopShape();
logger.LogInfo($"Current room design state includes a {tableShape}-shaped " +
$"table with {numberOfTableLegs} legs.");
if (numberOfSeatCushionsToOrder == 0)
{
logger.LogInfo("No chairs in the design take seat cushions.");
}
logger.LogInfo("Chair Prototype Object HashCode:");
logger.LogInfo(chairPrototype.GetHashCode().ToString(), ConsoleColor.Yellow);
logger.LogInfo("Chair Object HashCodes:");
logger.LogInfo(chair1.GetHashCode().ToString(), ConsoleColor.Yellow);
logger.LogInfo(chair2.GetHashCode().ToString(), ConsoleColor.Yellow);
logger.LogInfo(chair3.GetHashCode().ToString(), ConsoleColor.Yellow);
logger.LogInfo(chair4.GetHashCode().ToString(), ConsoleColor.Yellow);
}
