using System;
using System.Security.Claims;
using System.Threading.Tasks;
using Domain;
using Domain.Entities;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
using Microsoft.AspNet.Identity.Owin;
using Microsoft.Owin;
using Microsoft.Owin.Security;
using Microsoft.Owin.Security.DataProtection;

namespace CKBase
{
   public class EmailService : IIdentityMessageService
   {
      #region Methods

      public Task SendAsync(IdentityMessage message)
      {
         // Plug in your email service here to send an email.
         return Task.FromResult(0);
      }

      #endregion
   }

   public class SmsService : IIdentityMessageService
   {
      #region Methods

      public Task SendAsync(IdentityMessage message)
      {
         // Plug in your SMS service here to send a text message.
         return Task.FromResult(0);
      }

      #endregion
   }

   // Configure the application user manager used in this application. UserManager is defined in ASP.NET Identity and is used by the application.
   public class ApplicationUserManager : UserManager<User>
   {
      #region Constructor(s), Destructor, and Dispose

      public ApplicationUserManager(IUserStore<User> store)
         : base(store)
      {}

      #endregion
      #region Methods

      public static ApplicationUserManager Create(
         IdentityFactoryOptions<ApplicationUserManager> options,
         IOwinContext context)
      {
         var manager = new ApplicationUserManager(new UserStore<User>(context.Get<YourDbNameHere>()));
         // Configure validation logic for usernames
         manager.UserValidator = new UserValidator<User>(manager)
         {
            AllowOnlyAlphanumericUserNames = false,
            RequireUniqueEmail = true
         };

         // Configure validation logic for passwords
         manager.PasswordValidator = new PasswordValidator
         {
            RequiredLength = 6,
            RequireNonLetterOrDigit = true,
            RequireDigit = true,
            RequireLowercase = true,
            RequireUppercase = true,
         };

         // Configure user lockout defaults
         manager.UserLockoutEnabledByDefault = true;
         manager.DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
         manager.MaxFailedAccessAttemptsBeforeLockout = 5;

         // Register two factor authentication providers. This application uses Phone and Emails as a step of receiving a code for verifying the user
         // You can write your own provider and plug it in here.
         manager.RegisterTwoFactorProvider("Phone Code",
            new PhoneNumberTokenProvider<User>
            {
               MessageFormat = "Your security code is {0}"
            });
         manager.RegisterTwoFactorProvider("Email Code",
            new EmailTokenProvider<User>
            {
               Subject = "Security Code",
               BodyFormat = "Your security code is {0}"
            });
         manager.EmailService = new EmailService();
         manager.SmsService = new SmsService();
         IDataProtectionProvider dataProtectionProvider = options.DataProtectionProvider;
         if(dataProtectionProvider != null)
         {
            manager.UserTokenProvider =
               new DataProtectorTokenProvider<User>(dataProtectionProvider.Create("ASP.NET Identity"));
         }
         return manager;
      }

      #endregion
   }

   // Configure the application sign-in manager which is used in this application.
   public class ApplicationSignInManager : SignInManager<User, string>
   {
      #region Constructor(s), Destructor, and Dispose

      public ApplicationSignInManager(ApplicationUserManager userManager,
         IAuthenticationManager authenticationManager)
         : base(userManager, authenticationManager)
      {}

      #endregion
      #region Methods

      public static ApplicationSignInManager Create(
         IdentityFactoryOptions<ApplicationSignInManager> options,
         IOwinContext context)
      {
         return new ApplicationSignInManager(context.GetUserManager<ApplicationUserManager>(),
            context.Authentication);
      }

      public override Task<ClaimsIdentity> CreateUserIdentityAsync(User user)
      {
         return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager);
      }

      #endregion
   }
}