using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Collections.Generic;
using System.Linq;


[MemoryDiagnoser(displayGenColumns: false)]
public partial class Program
{
  static void Main(string[] args) =>
    BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);

  [Params (10, 10000)]
  public int Size { get; set; }
  private IEnumerable<int> items;

  [GlobalSetup]
  public void Setup()
  {
    items = Enumerable.Range(1, Size).ToArray();
  }  

  [Benchmark]
  public int Min() => items.Min();

  [Benchmark]
  public int Max() => items.Max();

  [Benchmark]
  public double Average() => items.Average();

  [Benchmark]
  public int Sum() => items.Sum();
}

public static int Min(this IEnumerable<int> source)
{
  if (source == null)
  {
    ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
  }

  int value;
  using (IEnumerator<int> e = source.GetEnumerator())
  {
    if (!e.MoveNext())
    {
      ThrowHelper.ThrowNoElementsException();
    }

    value = e.Current;
    while (e.MoveNext())
    {
      int x = e.Current;
      if (x < value)
      {
        value = x;
      }
    }
  }
  return value;
}

public static int Min(this IEnumerable<int> source) => MinInteger(source);

private static T MinInteger<T>(this IEnumerable<T> source)
  where T : struct, IBinaryInteger<T>
{
  T value;

  if (source.TryGetSpan(out ReadOnlySpan<T> span))
  {
    if (Vector.IsHardwareAccelerated && 
        span.Length >= Vector<T>.Count * 2)
    {
      .... // Optimized implementation
      return ....;
    }
  }
  .... //Implementation as in .NET 6
}

if (Vector.IsHardwareAccelerated && span.Length >= Vector<T>.Count * 2)

private static T MinInteger<T>(this IEnumerable<T> source)
where T : struct, IBinaryInteger<T>
{
  .... 
  if (Vector.IsHardwareAccelerated && span.Length >= Vector<T>.Count * 2)
  {
    var mins = new Vector<T>(span);
    index = Vector<T>.Count;
    do
    {
      mins = Vector.Min(mins, new Vector<T>(span.Slice(index)));
      index += Vector<T>.Count;
    }
    while (index + Vector<T>.Count <= span.Length);

    value = mins[0];
    for (int i = 1; i < Vector<T>.Count; i++)
    {  
      if (mins[i] < value)
      {
        value = mins[i];
      }
    }
  ....
}

• Interceptor : اطلاعاتی در مورد IInterceptor و نحوه‌ی Intercept یک شیء را نگه داری می‌کند. در اینجا از  VirtualMethodInterceptor برای تزریق کد استفاده شده.
  
• InterceptionBehavior : این کلاس Behavior مورد نظر را به کلاس تزریق می‌کند.
  
• AddintionalInterface  : کلاس target را مجبور به پیاده سازی اینترفیس دریافتی از پارامتر می‌کند.  اگر کلاس behavior، متد  GetRequiredInterfaces  اینترفیس INotifyPropertyChanged را برمی گرداند، نیازی نیست از AddintionalInterface در پارامتر متد فوق استفاده کنید. 
  

@helper IncludeGoogleAnalytics(WebViewPage page)
    {
        var controller = page.ViewContext.Controller;
        var controllerHasAuthorizeAttribute = controller.GetType().GetCustomAttributes(typeof(AuthorizeAttribute), true).Any();
        var currentActionName = page.ViewContext.Controller.ValueProvider.GetValue("action").RawValue.ToString();
        var actionHasAuthorizeAttribute = controller.GetType().GetMethods()
                                                    .Where(x => x.Name == currentActionName &&
                                                                x.GetCustomAttributes(typeof(AuthorizeAttribute), true).Any())                                                    
                                                    .Any();
        if (!controllerHasAuthorizeAttribute && !actionHasAuthorizeAttribute)
        {
            string trackingId = ConfigurationManager.AppSettings["GoogleAnalyticsID"];
    <script type="text/javascript">
        var _gaq = _gaq || [];
        _gaq.push(['_setAccount', '@trackingId']);
        _gaq.push(['_trackPageview']);
        (function () {
            var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
            ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
            var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
        })();    
    </script>
        }

@HtmlUtils.IncludeGoogleAnalytics(this)

public interface ICheckoutConfig
{
    bool UseGeolocation { get; } 
}

public class CheckoutConfig : ICheckoutConfig 
{ 
    static CheckoutConfig() 
    { 
        bool.TryParse(ConfigurationManager.AppSettings["UseGeolocation"], out _useGeolocation); 
    }
 
    private static bool _useGeolocation; 
    public bool UseGeolocation 
    { 
        get { return _useGeolocation; } 
    } 
}

public interface IShoppingCartService
{
    ShoppingCart GetContents();
    ShoppingCart AddItemToCart(int itemId, int quantity);
}
public class ShoppingCartService : IShoppingCartService
{
    public ShoppingCart GetContents()
    {
        throw new NotImplementedException("Get cart from Persistence Layer");
    }
    public ShoppingCart AddItemToCart(int itemId, int quantity)
    {
        throw new NotImplementedException("Add Item to cart then return updated cart");
    }
}
public class ShoppingCart
{
    public List<product> Items { get; set; }
}
public class Product
{
    public int ItemId { get; set; }
    public string ItemName { get; set; }
}
public class ShoppingCartController : Controller
{
    //Concrete object below points to actual service
    //private ShoppingCartService _shoppingCartService;
    //loosely coupled code below uses the interface rather than the 
    //concrete object
    private IShoppingCartService _shoppingCartService;
    public ShoppingCartController()
    {
        _shoppingCartService = new ShoppingCartService();
    }
    public ActionResult GetCart()
    {
        //now using the shared instance of the shoppingCartService dependency
        ShoppingCart cart = _shoppingCartService.GetContents();
        return View("Cart", cart);
    }
    public ActionResult AddItemToCart(int itemId, int quantity)
    {
        //now using the shared instance of the shoppingCartService dependency
        ShoppingCart cart = _shoppingCartService.AddItemToCart(itemId, quantity);
        return View("Cart", cart);
    }
}

//loosely coupled code below uses the interface rather 
//than the concrete object
private IShoppingCartService _shoppingCartService;
//MVC uses this constructor 
public ShoppingCartController()
{
    _shoppingCartService = new ShoppingCartService();
}
//You can use this constructor when testing to inject the    
//ShoppingCartService dependency
public ShoppingCartController(IShoppingCartService shoppingCartService)
{
    _shoppingCartService = shoppingCartService;
}

[TestClass]
public class ShoppingCartControllerTests
{
    [TestMethod]
    public void GetCartSmokeTest()
    {
        //arrange
        ShoppingCartController controller = 
           new ShoppingCartController(new ShoppingCartServiceStub());
        // Act
        ActionResult result = controller.GetCart();
        // Assert
        Assert.IsInstanceOfType(result, typeof(ViewResult));
    }
}
/// <summary>
/// This is is a stub of the ShoppingCartService
/// </summary>
public class ShoppingCartServiceStub : IShoppingCartService
{
    public ShoppingCart GetContents()
    {
        return new ShoppingCart
        {
            Items = new List<product> {
                new Product {ItemId = 1, ItemName = "Widget"}
            }
        };
    }
    public ShoppingCart AddItemToCart(int itemId, int quantity)
    {
        throw new NotImplementedException();
    }
}

public class CustomProfile
    {
        [Required(ErrorMessage="*")]
        [StringLength(50)]
        [System.Web.Mvc.Remote(action: "CheckUserName",
                                       controller: "User",
                                       HttpMethod = "POST",
                                       ErrorMessage = "این نام کاربری وجود دارد")]
        public string Username{ get; set; }
        [Required(ErrorMessage = "*")]
        public string Password{ get; set; }
        [Required(ErrorMessage = "*")]
        public string FirstName{ get; set; }
        [Required(ErrorMessage = "*")]
        public string LastName{ get; set; }
        
        [Required(ErrorMessage = "*")]
        [StringLength(10, ErrorMessage = "کدملی باید 10 رقم باشد")]
        public string NationalCode { get; set; }
        [Required(ErrorMessage = "*")]
        public string Address { get; set; }

        [RegularExpression(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*",
                           ErrorMessage = "آدرس ایمیل معتبر نیست")]
        [System.Web.Mvc.Remote(action: "CheckEmail",
                                       controller: "User",
                                       AdditionalFields = "Username",
                                       HttpMethod = "POST",
                                       ErrorMessage = "این ایمیل وجود دارد")]
        public string Email{ get; set; }

        [StringLength(11, ErrorMessage = "تلفن باید 11 رقم باشد")]
        public string PhoneNo{ get; set; }

        [StringLength(11, ErrorMessage = "موبایل باید 11 رقم باشد")]
        public string MobileNo{ get; set; }
        
        
        public string[] Roles{ get; set; }
        
        public string LastActivityDate{ get; set; }
        public string LastLoginDate { get; set; }
        public string CreationDate { get; set; }
        public bool IsLockedOut{ get; set; }
    }

@model Sama.Models.CustomProfile
@{
    ViewBag.Title = "Create";
    Layout = "~/Views/Shared/_Layout.cshtml";
    
}
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
@using (Html.BeginForm(actionName: "Create", controllerName: "User"))
    {
        @Html.ValidationSummary(true)
     
        <fieldset>
            <legend>کاربر جدید</legend>
            <div>
                <table>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.Username, "نام کاربری")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.Username)
                                @Html.ValidationMessageFor(model => model.Username)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.Password, "کلمه عبور")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.PasswordFor(model => model.Password)
                                @Html.ValidationMessageFor(model => model.Password)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.FirstName, "نام")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.FirstName)
                                @Html.ValidationMessageFor(model => model.FirstName)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.LastName, "نام خانوادگی")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.LastName)
                                @Html.ValidationMessageFor(model => model.LastName)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.NationalCode, "کد ملی")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.NationalCode)
                                @Html.ValidationMessageFor(model => model.NationalCode)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.Email, "ایمیل")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.Email)
                                @Html.ValidationMessageFor(model => model.Email)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.PhoneNo, "تلفن")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.PhoneNo)
                                @Html.ValidationMessageFor(model => model.PhoneNo)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.MobileNo, "موبایل")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.EditorFor(model => model.MobileNo)
                                @Html.ValidationMessageFor(model => model.MobileNo)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <div>
                                @Html.LabelFor(model => model.Address, "آدرس")
                            </div>
                        </td>
                        <td>
                            <div>
                                @Html.TextAreaFor(model => model.Address, 5, 30, null)
                                @Html.ValidationMessageFor(model => model.Address)
                            </div>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            نقش‌ها </td>
                        <td>
                            @Helper.CheckBoxList("Roles", (List<SelectListItem>)ViewBag.Roles)
                        </td>
                    </tr>
                    <tr>
                        <td>
                        </td>
                        <td>
                            <input type="submit" value="ذخیره" class="btn btn-primary" />
                        </td>
                    </tr>
                </table>
            </div>
        </fieldset>
    
    }