using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using ApacKernel;
using ApacKernel.Authentication;
using ApacKernel.Extensions;
using ApacKernel.Web.MVC;
using Now.Business.Clients;
using Now.Business.WarehouseService;
using Now.Entities;

namespace Now.Web.Services
{
    public enum DashboardPermissions
    {
        // Consolidation
        Consolidation = 228,
        ConsolidationStatistic = 229,
        ConsolidationLocation = 240,
        // DistributionCenter
        DistributionCenter = 241,
        // Revenue
        RevenueNow = 260,
        RevenueSales = 226,
        RevenueWeekly = 227,
        RevenueOverview = 268,
        // Measure
		MeasureSummary = 269,
		MeasureSummaryLive = 278,
		MeasureSummaryBuyers = 279,
        MeasureFlash = 270,
        MeasureFlashLive = 280,
        MeasureFlashBuyers = 281,
        // Recommendations
        Recommendations = 271,
        RecommendationsSetup = 272,
        // Admin
        Administration = 273,
    }

    public class DashboardsPermissionService : IPermissionProvider
    {
        private readonly ILoginService _loginService;
        private readonly IWarehouseServiceClient _warehouseServiceClient;

        public DashboardsPermissionService(ILoginService loginService, IWarehouseServiceClient warehouseServiceClient)
        {
            this._loginService = loginService;
            this._warehouseServiceClient = warehouseServiceClient;
        }

        public bool Check(object permission)
        {
            if (ApacConfig.AppSettings.IsDevelopment && ApacConfig.AppSettings.NoCheckPermissions())
                return true;
            var checkPermission = Convert.ToInt32(permission);
            var cookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
            if (cookie != null)
            {
                var ticket = FormsAuthentication.Decrypt(cookie.Value);
                if (ticket != null && !string.IsNullOrEmpty(ticket.UserData))
                {
                    var userLoginData = ticket.UserData.DeserializeFromJson<DashboardsUserLoginData>();

                    if (userLoginData.Permissions == null || !userLoginData.LoggedTime.HasValue || userLoginData.LoggedTime.Value < ApacConfig.AppSettings.CookiesActualFrom())
                    {
                        var now = DateTime.Now;
                        userLoginData.Permissions = LoadCurrentUserPermissions();
                        userLoginData.LoggedTime = now;
                        userLoginData.ExpiredTime = cookie.Expires = now.AddMonths(1);
                        var userLoginJson = userLoginData.SerializeToJson();
                        var newTicket = new FormsAuthenticationTicket(ticket.Version, ticket.Name, ticket.IssueDate, ticket.Expiration,
                                                                      ticket.IsPersistent, userLoginJson, ticket.CookiePath);
                        var encTicket = FormsAuthentication.Encrypt(newTicket);
                        cookie.Value = encTicket;
                        HttpContext.Current.Response.Cookies.Add(cookie);
                    }
                    return userLoginData.Permissions != null && userLoginData.Permissions.Contains(checkPermission);
                }
            }
            return false;
        }

        public object[] LoadPermissions(Guid userID)
        {
            var result = _warehouseServiceClient.GetUserPermissions(new GetUserPermissionsParameters
            {
                UserId = userID
            });

            var permissions = result.Permissions.Select(d => d.Id).Cast<object>().ToArray();
            return permissions;
        }

        public int[] LoadCurrentUserPermissions()
        {
            return LoadPermissions(_loginService.CurrentUserID).Cast<int>().ToArray();
        }
        public ActionResult FailAction(AuthorizationContext filterContext)
        {
            throw new HttpException(403, "You have no permission for this action.");
        }
    }
}