using Konsole;
           
            var pb = new ProgressBar(PbStyle.DoubleLine, 50);
            pb.Refresh(0, "connecting to server to download 5 files asychronously.");
            Console.ReadLine();

            pb.Refresh(25, "downloading file number 25");
            Console.ReadLine();
            pb.Refresh(50, "finished.");

    using Konsole;
           
    Console.WriteLine("ready press enter.");
    Console.ReadLine();

    var dirCnt = 15;
    var filesPerDir = 100;
    var r = new Random();
    var q = new ConcurrentQueue<string>();
    foreach (var name in TestData.MakeNames(2000)) q.Enqueue(name);
    var dirs = TestData.MakeObjectNames(dirCnt).Select(dir => new
    {
        name = dir,
        cnt = r.Next(filesPerDir)
    });

    var tasks = new List<Task>();
    var bars = new ConcurrentBag<ProgressBar>();
    foreach (var d in dirs)
    {
        var files = q.Dequeue(d.cnt).ToArray();
        if (files.Length == 0) continue;
        tasks.Add(new Task(() =>
        {
            var bar = new ProgressBar(files.Count());
            bars.Add(bar);
            bar.Refresh(0, d.name);
            ProcessFakeFiles(d.name, files, bar);
        }));
    }

    foreach (var t in tasks) t.Start();
    Task.WaitAll(tasks.ToArray());
    Console.WriteLine("done.");

            var con = new Window(200,50);
            con.WriteLine("starting client server demo");
            var client = new Window(1, 4, 20, 20, ConsoleColor.Gray, ConsoleColor.DarkBlue, con);
            var server = new Window(25, 4, 20, 20, con);
            client.WriteLine("CLIENT");
            client.WriteLine("------");
            server.WriteLine("SERVER");
            server.WriteLine("------");
            client.WriteLine("<-- PUT some long text to show wrapping");
            server.WriteLine(ConsoleColor.DarkYellow, "--> PUT some long text to show wrapping");
            server.WriteLine(ConsoleColor.Red, "<-- 404|Not Found|some long text to show wrapping|");
            client.WriteLine(ConsoleColor.Red, "--> 404|Not Found|some long text to show wrapping|");

            con.WriteLine("starting names demo");
            // let's open a window with a box around it by using Window.Open
            var names = Window.Open(50, 4, 40, 10, "names");
            TestData.MakeNames(40).OrderByDescending(n => n).ToList()
                 .ForEach(n => names.WriteLine(n));

            con.WriteLine("starting numbers demo");
            var numbers = Window.Open(50, 15, 40, 10, "numbers", 
                  LineThickNess.Double,ConsoleColor.White,ConsoleColor.Blue);
            Enumerable.Range(1,200).ToList()
                 .ForEach(i => numbers.WriteLine(i.ToString())); // shows scrolling

        using Konsole.Form;
        ...
            var form1 = new Form(80,new ThickBoxStyle());
            var person = new Person()
            {
                FirstName = "Fred",
                LastName = "Astair",
                FieldWithLongerName = "22 apples",
                FavouriteMovie = "Night of the Day of the Dawn of the Son 
                of the Bride of the Return of the Revenge of the Terror 
                of the Attack of the Evil, Mutant, Hellbound, Flesh-Eating 
                Subhumanoid Zombified Living Dead, Part 2: In Shocking 2-D"
            };
            form1.Write(person);

           // works with anonymous types
            new Form().Write(new {Height = "40px", Width = "200px"}, "Demo Box");

            // change the box style, and width
            new Form(40, new ThickBoxStyle()).Show(new { AddUser= "true", CloseAccount = "false", OpenAccount = "true"}, "Permissions");

        
        using Konsole;
        ...
        public class Cat
        {
            private readonly IConsole _console;
            public Cat(IConsole console) { _console = console; }
            public void Greet()
            {
                _console.WriteLine("Prrr!");
                _console.WriteLine("Meow!");
            }
        }

        [Test]
        public void TestConsole_ConsoleWriter_and_IConsole_example_usage()
        {
            {
                // test the cat
                // ============
                var console = new TestConsole(80, 20);
                var cat = new Cat(console);
                cat.Greet();
                Assert.AreEqual(console.BufferWrittenTrimmed, new[] {"Prrr!", "Meow!"});
            }
            {
                // create an instance of a cat that will purr to the real Console
                // ==============================================================
                var cat = new Cat(new ConsoleWriter());
                cat.Greet(); // prints Prrr! aand Meow! to the console
            }
        }

        [Test]
        public void Test_Invoice_using_mocks()
        {
            // test the invoice
            // ============
            IConsole console = new Substitute.For<IConsole>();
            var invoice = new Invoice(console);
            invoice.AddLine(2, "Semi Skimmed Milk", "2 pints", "£",1.00);
            invoice.AddLine(3, "Warburtons Crumpets", "6 pack", "£",0.89);
            invoice.Print();
                
            // not really practical to test printed output using a mock console
            // ================================================================
            console.Received().SetCursorPosition(0,0);
            console.Received().WriteLine("ACME Wholesale Foody");
            console.Received().WriteLine("--------------------");
            console.Received().WriteLine("");
            console.Received().WriteLine("--------------------");
            console.Received().Write("qty ");
            console.Received().Write(2);
            console.Received().Write(" Semi Skimmed Milk");
            console.Received().Write(", ");
            console.Received().Write("{0} pints", 2);
            console.Received().Write("£ {0.00,-10}", 2.0m);
            .
            .
            . // and so on and so on ...for probably around another 12 or 13 lines.
            .
            .
             // having to mimick the exact formatted Write's and Writelines and SetCursor movements 
             // this is brittle, if the code is optimised to replace two Write's with a single formatted WriteLine for example
             // then this test fails even though the desired output is written to the console.
        }
        

        [Test]
        public void testing_Invoice_class_using_MockConsole()
            {
                var expected = @"
                 ACME WHoleSale Foody 
                 -------------------- 
                 qty 2 Semi Skimmed Milk   , 2 pints     £ 2.00
                 qty 3 Warburtons Crumpets , 6 pack      £ 5.34
                 --------------
                 total   £ 7.34 
                 --------------
            
                * some random message on the footer
";
        
                var console = new MockConsole();
                var invoice = new Invoice(console);
                invoice.AddLine(2, "Semi Skimmed Milk", "2 pints", "£",1.00);
                invoice.AddLine(3, "Warburtons Crumpets", "6 pack", "£",0.89);
                invoice.Print();
                Assert.AreEqual(console.BufferString,expected);
                });
            }
                
            // Now, if someone accidentally changes your currency formatter, this test will wail
            // when the rendered output to the Console suddenly changes, bwaaam! Instant Fail.
            // Score one for MockConsole, sweetness, life is good!
        }