﻿using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Security.Principal;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using MvcUI.Models;

namespace MvcUI.Controllers
{

  [HandleError]
  public class AccountController : Controller
  {

    public IFormsAuthenticationService FormsService { get; set; }
    public IMembershipService MembershipService { get; set; }

    protected override void Initialize(RequestContext requestContext)
    {
      if (FormsService == null) { FormsService = new FormsAuthenticationService(); }
      if (MembershipService == null) { MembershipService = new AccountMembershipService(); }

      base.Initialize(requestContext);
    }

    // **************************************
    // URL: /Account/LogOn
    // **************************************

    public ActionResult LogOn()
    {
      return View();
    }

    [HttpPost]
    public ActionResult LogOn(LogOnModel model, string returnUrl)
    {
      if (ModelState.IsValid)
      {
        if (MembershipService.ValidateUser(model.UserName, model.Password))
        {
          FormsService.SignIn(model.UserName, model.RememberMe);
          if (!String.IsNullOrEmpty(returnUrl))
          {
            return Redirect(returnUrl);
          }
          else
          {
            return RedirectToAction("Index", "Home");
          }
        }
        else
        {
          ModelState.AddModelError("", "The user name or password provided is incorrect.");
        }
      }

      // If we got this far, something failed, redisplay form
      return View(model);
    }

    // **************************************
    // URL: /Account/LogOff
    // **************************************

    public ActionResult LogOff()
    {
      FormsService.SignOut();

      return RedirectToAction("Index", "Home");
    }

    // **************************************
    // URL: /Account/Register
    // **************************************

    public ActionResult Register()
    {
      ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
      return View();
    }

    [HttpPost]
    public ActionResult Register(RegisterModel model)
    {
      if (ModelState.IsValid)
      {
        // Attempt to register the user
        MembershipCreateStatus createStatus = MembershipService.CreateUser(model.UserName, model.Password, model.Email);

        if (createStatus == MembershipCreateStatus.Success)
        {
          FormsService.SignIn(model.UserName, false /* createPersistentCookie */);
          return RedirectToAction("Index", "Home");
        }
        else
        {
          ModelState.AddModelError("", AccountValidation.ErrorCodeToString(createStatus));
        }
      }

      // If we got this far, something failed, redisplay form
      ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
      return View(model);
    }

    // **************************************
    // URL: /Account/ChangePassword
    // **************************************

    [Authorize]
    public ActionResult ChangePassword()
    {
      ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
      return View();
    }

    [Authorize]
    [HttpPost]
    public ActionResult ChangePassword(ChangePasswordModel model)
    {
      if (ModelState.IsValid)
      {
        if (MembershipService.ChangePassword(User.Identity.Name, model.OldPassword, model.NewPassword))
        {
          return RedirectToAction("ChangePasswordSuccess");
        }
        else
        {
          ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
        }
      }

      // If we got this far, something failed, redisplay form
      ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
      return View(model);
    }

    // **************************************
    // URL: /Account/ChangePasswordSuccess
    // **************************************

    public ActionResult ChangePasswordSuccess()
    {
      return View();
    }

  }
}
