using BeWo.Data.Access;
using BeWo.Data.Entities;
using BS.Shared;
using BS.Shared.DataContracts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BeWo.Data.Security
{
	public class UserRightHelper
	{
		public static readonly string BASE_VERSION = "1.0";

		public static string GetTenant()
		{
            if (MultitenancyOperationContextExt.Current != null)
                return MultitenancyOperationContextExt.Current.Tenant;

            return SessionFacade.Tenant;
		}

		public static Employee GetLoggedInEmployee()
		{
			return GetLoggedInUser()?.Employee;
		}

		public static ApplicationUser GetLoggedInUserWithOid()
		{
			if (GetLoggedInUser() is ApplicationUser user && user.Oid is long)
				return user;

			throw new InvalidOperationException("RequireLoggedInUserOid");
		}


		public static ApplicationUser GetLoggedInUser()
		{
			return LoggedInUserOperationContextExt.Current?.User ?? SessionFacade.LoggedInUser;

			//if (LoggedInUserOperationContextExt.Current != null &&
			//    LoggedInUserOperationContextExt.Current.User != null)
			//{
			//    return LoggedInUserOperationContextExt.Current.User;
			//}
			//else
			//{
			//    return SessionFacade.LoggedInUser;
			//}


			//return null;
		}

		public static bool LoggedInUserHasRight(UserRightType right)
		{
			return GetGrantedRights(GetLoggedInUser()).Contains(right);

		}

		public static bool UserHasRight(ApplicationUser user, UserRightType right)
		{
			return GetGrantedRights(user).Contains(right);

		}

		public static List<UserRightType> GetGrantedRights(ApplicationUser user)
		{
			var rights = new List<UserRightType>();
			foreach (var ug in user.UserGroups)
			{
				foreach (var rr in ug.Rights)
				{
					rights.Add(rr.RightType);
				}
			}

			return rights;
		}

		public static String GetBeWoVersion()
		{
			return GetBeWoVersion(GetLoggedInUser().LoginName);
		}

		public static String GetBeWoVersion(String loginName)
		{
			var lastLogins = DAOFactory.SearchDAO.FindLastLogins(loginName, 1).ToList();
			if (lastLogins != null && lastLogins.Count > 0)
			{
				var login = lastLogins[0];
				if (!String.IsNullOrEmpty(login.Referrer))
				{
					//var test = "MobilClient, Version: Unbekannt";
					//var test2 = "BeWoClient, Version: Microsoft Windows NT 6.2.9200.0;CLRVersion=4.0.30319.42000;BeWoVersion=Version 3.16;IsNet45OrNewer=True";

					var str = login.Referrer;

					var start = str.IndexOf("BeWoVersion=");
					if (start > 0)
					{
						var stop = str.IndexOf(";", start);
						if (stop > start)
						{
							var version = str.Substring(start + 12, stop - start - 12);
							version = version.Replace("Version", "").Trim();

							return version;
						}
					}
				}
			}
			return "";
		}

		public static void CheckRightVersion(UserDC user)
		{
			var liu = GetLoggedInUser();
			if (liu != null)
            {
				var version = GetBeWoVersion(liu.LoginName);
				CheckRightVersion(version, user);
			}
			
		}


		public static void CheckRightVersion(UserGroupDC groupDC)
		{
			var version = GetBeWoVersion(GetLoggedInUser().LoginName);
			CheckRightVersion(version, groupDC);
		}

		public static void CheckRightVersion(String version, UserDC userDC)
		{
			foreach (var ug in userDC.UserGroups)
			{
				CheckRightVersion(version, ug);
			}

		}

		public static void CheckRightVersion(String version, UserGroupDC ug)
		{
			var allrights = ug.Rights;
			ug.Rights = new List<UserRightType>();
			foreach (var r in allrights)
			{
				if (IsCorrectVersion(r, version))
				{
					ug.Rights.Add(r);
				}
			}
		}

		public static bool IsCorrectVersion(UserRightType r, string version)
		{
			var rightVersion = GetRightVersion(r);

			if (!String.IsNullOrEmpty(version) && version.CompareTo(rightVersion) < 0)
			{
				return false;
			}
			return true;
		}

		public static String GetRightVersion(UserRightType r)
		{
			if (r == UserRightType.Customer_ViewBetreuung || r == UserRightType.Customer_ViewAbsenceTimes)
			{
				return "3.17";
			}
			if (r == UserRightType.AdditionalService_Edit)
			{
				return "3.18";
			}
			if (r == UserRightType.Customer_EditMedication)
			{
				return "3.19";
			}
			if (r == UserRightType.SupportConcept_ImportData || r == UserRightType.FinanzenRechnungenNachVersandBearbeiten)
			{
				return "3.21";
			}

			if (isRightVersion322(r))
				return "3.22";
			if (isRightVersion329(r))
				return "3.29";
			if (isRightVersion330(r))
				return "3.30";
            if (isRightVersion331(r))
                return "3.31";
            return BASE_VERSION;
		}

		private static bool isRightVersion322(UserRightType r)
		{
			return r == UserRightType.DienstplanungBearbeiten
				|| r == UserRightType.WohnheimView_Wohneinheit_Belegung_View
				|| r == UserRightType.WohnheimView_Wohneinheit_Belegung_Manage
				|| r == UserRightType.WohnheimView_Wohneinheit_View
				|| r == UserRightType.WohnheimView_Wohneinheit_Manage
				|| r == UserRightType.WohnheimView_Wohneinheit_Gallery_View
				|| r == UserRightType.WohnheimView_Wohneinheit_Gallery_Manage
				|| r == UserRightType.Customer_GemeinnutzigeArbeit_View
				|| r == UserRightType.Customer_GemeinnutzigeArbeit_Manage
				|| r == UserRightType.Customer_Wohnhilfe_View
				|| r == UserRightType.Customer_Wohnhilfe_Manage
				|| r == UserRightType.Finance_Gkv_View
				|| r == UserRightType.Finance_Gkv_Create
				|| r == UserRightType.Finance_Gkv_Send
				|| r == UserRightType.Finance_Gkv_Delete;
		}

		private static bool isRightVersion329(UserRightType r)
		{
			return r == UserRightType.Employee_AllowEditAbsenceTimes
				|| r == UserRightType.Employee_AllowEditOvertimes;
		}

		private static bool isRightVersion330(UserRightType r)
		{
			return r == UserRightType.KalenderInAbwesenheitenUebernehmen
				//|| r == UserRightType.AiModuleChatView
				//|| r == UserRightType.AiModuleChatClone
				//|| r == UserRightType.AiModuleViewSetting
				//|| r == UserRightType.AiModuleChatAdd
				//|| r == UserRightType.AiModuleChatDelete
				//|| r == UserRightType.AiModuleChatEdit
				//|| r == UserRightType.AiModulePromptbausteineAdd
				|| r == UserRightType.AiModulePromptbausteineEdit
				//|| r == UserRightType.AiModulePromptbausteineRemove
				//|| r == UserRightType.AiModulePromptbausteineSeeAll
				|| r == UserRightType.AiModulePromptbausteineView
				//|| r == UserRightType.AiModulePromptbausteineExecute
				|| r == UserRightType.AiModulePromptbausteinShare
				|| r == UserRightType.AiModuleServiceRecordChat
				|| r == UserRightType.AiModuleServiceRecordDocu
				|| r == UserRightType.AiVoiceView;
		}

        private static bool isRightVersion331(UserRightType r)
        {
            return r == UserRightType.VorlagenEditAll
                || r == UserRightType.VorlagenEditOwnTeams
                || r == UserRightType.VorlagenViewAll
                || r == UserRightType.VorlagenViewOwnTeams
				|| r == UserRightType.Customer_CreateMedication
                || r == UserRightType.Customer_DeleteMedication;
        }

    }
}