Async with Task

Scenario:

Async with Tasks running in non blocking way

Solution:

•  From MSDN: The composition of an asynchronous operation followed by synchronous work is an asynchronous operation. Stated another way, if any portion of an operation is asynchronous, the entire operation is asynchronous.
•  Below code, the tasks run async and then we await to build the final response.

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using System;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class ProgramAsyncTask
    {
        static async Task Main(string[] args)

        {
            Tea tea = PourTea();
            Console.WriteLine("tea is ready");

            //create tasks
            Task<Poha> pohaTask = FryPohaAsync(2);
            Task<Laddu> ladduTask = MakeLadduAsync(3);
            Task<Toast> toastTask = MakeToastWithButterAndJamAsync(3);

            //wait to get poha now
            Poha poha = await pohaTask;
            Console.WriteLine("poha are ready");

            //wait to get laddu now
            Laddu laddu = await ladduTask;
            Console.WriteLine("laddu are ready");

            //wait to get toast now
            Toast toast = await toastTask;
            Console.WriteLine("toast is ready");

            Juice mj = PourMJ();
            Console.WriteLine("Mango juice is ready");

            Console.WriteLine("Breakfast is ready!");

            Console.Read();
        }

        private static Juice PourMJ()
        {
            Console.WriteLine("Pouring Mango juice");
            return new Juice();
        }

        private static void ApplyJam(Toast toast) =>
            Console.WriteLine("Putting jam on the toast");

        private static void ApplyButter(Toast toast) =>
            Console.WriteLine("Putting butter on the toast");

        private static async Task<Toast> ToastBreadAsync(int slices)
        {
            for (int slice = 0; slice < slices; slice++)
            {
                Console.WriteLine("Putting a slice of bread in the toaster");
            }
            Console.WriteLine("Start toasting...");
            await Task.Delay(3000);
            Console.WriteLine("Remove toast from toaster");

            return new Toast();
        }

        private static async Task<Poha> FryPohaAsync(int ingrediants)
        {
            Console.WriteLine($"putting {ingrediants} ingrediants in kadhai");
            Console.WriteLine("cooking in kadhai...");
            await Task.Delay(3000);
            for (int ingrediant = 0; ingrediant < ingrediants; ingrediant++)
            {
                Console.WriteLine($"cooking ingrediant {ingrediant}");
            }
            Console.WriteLine("steam poha..");
            await Task.Delay(3000);
            Console.WriteLine("Put poha on plate");

            return new Poha();
        }

        private static async Task<Laddu> MakeLadduAsync(int howMany)
        {
            Console.WriteLine("Warming the pan...");
            await Task.Delay(3000);
            Console.WriteLine($"make {howMany} laddu");
            await Task.Delay(3000);
            Console.WriteLine("Put laddu on plate");

            return new Laddu();
        }

        private static Tea PourTea()
        {
            Console.WriteLine("Pouring tea");
            return new Tea();
        }

        private static async Task<Toast> MakeToastWithButterAndJamAsync(int slices)
        {
            var toast = await ToastBreadAsync(slices);
            ApplyButter(toast);
            ApplyJam(toast);

            return toast;
        }
    }

    internal class Juice
    {
    }

    internal class Toast
    {
    }

    internal class Poha
    {
    }

    internal class Laddu
    {
    }

    internal class Tea
    {
    }
}