using System.Threading.Tasks;

namespace Async.Await
{
    public class Primerche
    {
        public async Task ExecuteMorningRoutine()
        {
            // Order coffee to the waiter.
            var orderCoffeeTask = Task.Run(() => OrderCoffee(3000));

            // Read newspaper while he brings you coffee
            // You are actually not being blocked here,
            // because the OrderCoffee task is running asynchroniously.
            var readNewspaperTask = Task.Run(() => ReadNewspaper(2500));

            // Stop reading newspaper, cause you got bored.
            await readNewspaperTask;

            // Maximum time we will wait for the coffee,
            // and actually being blocked, will be (3000 - 2500 = 500ms)
            var coffee = await orderCoffeeTask;

            var drinkCoffeeTask = Task.Run(() => DrinkCoffee(coffee, 1000));
            await drinkCoffeeTask;
        }

        public async Task<Coffee> OrderCoffee(int timeToWaitInMilliseconds)
        {
            await Task.Delay(timeToWaitInMilliseconds);

            return new Coffee();
        }

        public async Task ReadNewspaper(int timeInMilliseconds)
        {
            await Task.Delay(timeInMilliseconds);
        }

        public async Task DrinkCoffee(Coffee coffee, int timeToDrinkInMilliseconds)
        {
            await Task.Delay(timeToDrinkInMilliseconds);
        }
    }

    public class Coffee
    {
    }
}