using System;
using System.Linq;
using System.Net;
using System.Web.Mvc;
using System.Web.Routing;
using AutoMapper;
using WebsitePanel.Providers.HostedSolution;
using WebsitePanel.WebDav.Core.Config;
using WebsitePanel.WebDav.Core.Security.Authentication;
using WebsitePanel.WebDav.Core.Security.Cryptography;
using WebsitePanel.WebDav.Core.Wsp.Framework;
using WebsitePanel.WebDavPortal.CustomAttributes;
using WebsitePanel.WebDavPortal.Models;
using WebsitePanel.WebDavPortal.Models.Account;
using WebsitePanel.WebDavPortal.Models.Common;
using WebsitePanel.WebDavPortal.Models.Common.EditorTemplates;
using WebsitePanel.WebDavPortal.Models.Common.Enums;
using WebsitePanel.WebDavPortal.UI.Routes;
using WebsitePanel.WebDav.Core.Interfaces.Security;
using WebsitePanel.WebDav.Core;

namespace WebsitePanel.WebDavPortal.Controllers
{
    [LdapAuthorization]
    public class AccountController : BaseController
    {
        private readonly ICryptography _cryptography;
        private readonly IAuthenticationService _authenticationService;
        private readonly ISmsAuthenticationService _smsAuthService;

        public AccountController(ICryptography cryptography, IAuthenticationService authenticationService, ISmsAuthenticationService smsAuthService)
        {
            _cryptography = cryptography;
            _authenticationService = authenticationService;
            _smsAuthService = smsAuthService;
        }
        
        [HttpGet]
        [AllowAnonymous]
        public ActionResult Login()
        {
            if (WspContext.User != null && WspContext.User.Identity.IsAuthenticated)
            {
                return RedirectToRoute(FileSystemRouteNames.ShowContentPath, new { org = WspContext.User.OrganizationId });
            }

            var model = new AccountModel();

            var settings = WspContext.Services.System.GetSystemSettings(EnterpriseServer.SystemSettings.WEBDAV_PORTAL_SETTINGS);

            if (settings != null)
            {
                model.PasswordResetEnabled = settings.GetValueOrDefault(EnterpriseServer.SystemSettings.WEBDAV_PASSWORD_RESET_ENABLED_KEY, false);

            }

            return View(model);
        }

        [HttpPost]
        [AllowAnonymous]
        public ActionResult Login(AccountModel model)
        {
            var user = _authenticationService.LogIn(model.Login, model.Password);
            
            ViewBag.LdapIsAuthentication = user != null;

            if (user != null && user.Identity.IsAuthenticated)
            {
                _authenticationService.CreateAuthenticationTicket(user);

                return RedirectToRoute(FileSystemRouteNames.ShowContentPath, new { org = WspContext.User.OrganizationId });
            }

            return View(new AccountModel { LdapError = "The user name or password is incorrect" });
        }

        [HttpGet]
        public ActionResult Logout()
        {
            _authenticationService.LogOut();

            Session.Clear();

            return RedirectToRoute(AccountRouteNames.Login);
        }

        [HttpGet]
        public ActionResult UserProfile()
        {
            var model = GetUserProfileModel(WspContext.User.ItemId, WspContext.User.AccountId);

            return View(model);
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult UserProfile(UserProfile model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            int result = UpdateUserProfile(WspContext.User.ItemId, WspContext.User.AccountId, model);

            AddMessage(MessageType.Success, Resources.UI.UserProfileSuccessfullyUpdated);

            return View(model);
        }

        public JsonResult PhoneNumberIsAvailible()
        {
            var value = Request.QueryString.AllKeys.Any() ? Request.QueryString.Get(0) :string.Empty;

            var result = !WspContext.Services.Organizations.CheckPhoneNumberIsInUse(WspContext.User.ItemId,
                    value, WspContext.User.Login);

            return Json(result, JsonRequestBehavior.AllowGet);
        }

        [HttpGet]
        public ActionResult PasswordChange()
        {
            var model = new PasswordChangeModel();

            return View(model);
        }

        [HttpPost]
        public ActionResult PasswordChange(PasswordChangeModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            if (_authenticationService.ValidateAuthenticationData(WspContext.User.Login, model.OldPassword) == false)
            {
                AddMessage(MessageType.Error, Resources.Messages.OldPasswordIsNotCorrect);

                return View(model);
            }

            WspContext.Services.Organizations.SetUserPassword(
                    WspContext.User.ItemId, WspContext.User.AccountId,
                    model.PasswordEditor.NewPassword);

            var user = _authenticationService.LogIn(WspContext.User.Login, model.PasswordEditor.NewPassword);

            _authenticationService.CreateAuthenticationTicket(user);

            AddMessage(MessageType.Success, Resources.Messages.PasswordSuccessfullyChanged);

            return RedirectToRoute(AccountRouteNames.UserProfile);
        }

        [HttpGet]
        [AllowAnonymous]
        public ActionResult PasswordResetEmail()
        {
            var model = new PasswordResetEmailModel();

            return View(model);
        }

        [HttpPost]
        [AllowAnonymous]
        public ActionResult PasswordResetEmail(PasswordResetEmailModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            var exchangeAccount = WspContext.Services.ExchangeServer.GetAccountByAccountNameWithoutItemId(model.Email);

            if (exchangeAccount == null)
            {
                AddMessage(MessageType.Error, Resources.Messages.AccountNotFound);

                return View(model);
            }

            WspContext.Services.Organizations.SendResetUserPasswordEmail(exchangeAccount.ItemId, exchangeAccount.AccountId, Resources.Messages.PasswordResetUserReason, exchangeAccount.PrimaryEmailAddress);

            return View("PasswordResetEmailSent");
        }


        [HttpGet]
        [AllowAnonymous]
        public ActionResult PasswordResetSms(Guid token)
        {
            var model = new PasswordResetSmsModel();

            var accessToken = WspContext.Services.Organizations.GetPasswordresetAccessToken(token);

            model.IsTokenExist = accessToken != null;

            if (model.IsTokenExist == false)
            {
                AddMessage(MessageType.Error, Resources.Messages.IncorrectPasswordResetUrl);

                return View(model);
            }

            if (accessToken.IsSmsSent == false)
            {
                var user = WspContext.Services.Organizations.GetUserGeneralSettings(accessToken.ItemId, accessToken.AccountId);

                if (SendPasswordResetSms(accessToken.AccessTokenGuid, user.MobilePhone))
                {
                    AddMessage(MessageType.Success, Resources.Messages.SmsWasSent);
                }
                else
                {
                    AddMessage(MessageType.Error, Resources.Messages.SmsWasNotSent);
                }
            }

            return View(model);
        }

        [HttpPost]
        [AllowAnonymous]
        public ActionResult PasswordResetSms(Guid token, PasswordResetSmsModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            if (_smsAuthService.VerifyResponse(token, model.Sms))
            {
                var tokenEntity = WspContext.Services.Organizations.GetPasswordresetAccessToken(token);

                Session[WebDavAppConfigManager.Instance.SessionKeys.PasswordResetSmsKey] = model.Sms;
                Session[WebDavAppConfigManager.Instance.SessionKeys.ItemId] = tokenEntity.ItemId;

                return RedirectToRoute(AccountRouteNames.PasswordResetFinalStep);
            }

            AddMessage(MessageType.Error, Resources.Messages.IncorrectSmsResponse);

            return View(model);
        }


        [HttpGet]
        [AllowAnonymous]
        public ActionResult PasswordResetFinalStep(Guid token)
        {
            var smsResponse = Session[WebDavAppConfigManager.Instance.SessionKeys.PasswordResetSmsKey] as string;

            if (_smsAuthService.VerifyResponse(token, smsResponse) == false)
            {
                return RedirectToRoute(AccountRouteNames.PasswordResetSms);
            }

            var model = new PasswordEditor();

            return View(model);
        }

        [HttpPost]
        [AllowAnonymous]
        public ActionResult PasswordResetFinalStep(Guid token, PasswordEditor model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            var smsResponse = Session[WebDavAppConfigManager.Instance.SessionKeys.PasswordResetSmsKey] as string;

            if (_smsAuthService.VerifyResponse(token, smsResponse) == false)
            {
                AddMessage(MessageType.Error, Resources.Messages.IncorrectSmsResponse);

                return RedirectToRoute(AccountRouteNames.PasswordResetSms);
            }

            var tokenEntity = WspContext.Services.Organizations.GetPasswordresetAccessToken(token);

            WspContext.Services.Organizations.SetUserPassword(
                    tokenEntity.ItemId, tokenEntity.AccountId,
                    model.NewPassword);

            WspContext.Services.Organizations.DeletePasswordresetAccessToken(token);

            AddMessage(MessageType.Success, Resources.Messages.PasswordSuccessfullyChanged);

            return RedirectToRoute(AccountRouteNames.Login);
        }

        [HttpGet]
        [AllowAnonymous]
        public ActionResult PasswordResetSendSms(Guid token)
        {
            var accessToken = WspContext.Services.Organizations.GetPasswordresetAccessToken(token);

            if (accessToken == null)
            {
                return RedirectToRoute(AccountRouteNames.PasswordResetSms);
            }

            var user = WspContext.Services.Organizations.GetUserGeneralSettings(accessToken.ItemId,
                accessToken.AccountId);


            if (SendPasswordResetSms(accessToken.AccessTokenGuid, user.MobilePhone))
            {
                AddMessage(MessageType.Success, Resources.Messages.SmsWasSent);
            }
            else
            {
                AddMessage(MessageType.Error, Resources.Messages.SmsWasNotSent);
            }

            return RedirectToRoute(AccountRouteNames.PasswordResetSms);
        }

        #region Helpers

        private bool SendPasswordResetSms(Guid token, string mobilePhone)
        {
            var response = _smsAuthService.SendRequestMessage(mobilePhone);

            if (string.IsNullOrEmpty(response))
            {
                return false;
            }
            WspContext.Services.Organizations.SetAccessTokenResponse(token, response);

            return true;
        }

        private UserProfile GetUserProfileModel(int itemId, int accountId)
        {
            var user = WspContext.Services.Organizations.GetUserGeneralSettings(itemId, accountId);

            return Mapper.Map<OrganizationUser, UserProfile>(user);
        }

        private int UpdateUserProfile(int itemId, int accountId, UserProfile model)
        {
            var user = WspContext.Services.Organizations.GetUserGeneralSettings(itemId, accountId);

            return WspContext.Services.Organizations.SetUserGeneralSettings(
                itemId, accountId,
                model.DisplayName,
                string.Empty,
                false,
                user.Disabled,
                user.Locked,

                model.FirstName,
                model.Initials,
                model.LastName,

                model.Address,
                model.City,
                model.State,
                model.Zip,
                model.Country,

                user.JobTitle,
                user.Company,
                user.Department,
                user.Office,
                user.Manager == null ? null : user.Manager.AccountName,

                model.BusinessPhone,
                model.Fax,
                model.HomePhone,
                model.MobilePhone,
                model.Pager,
                model.WebPage,
                model.Notes,
                model.ExternalEmail,
                user.SubscriberNumber,
                user.LevelId,
                user.IsVIP,
                user.UserMustChangePassword);
        }

        #endregion

    }
}