using System;
using System.Collections.Generic;
using System.Linq;
using BeWo.Data;
using BeWo.Data.Access;
using BeWo.Data.Entities;
using BeWo.Service.DCEntityMapper;
using BeWo.Service.Plugins;
using BS.Shared;
using BS.Shared.DataContracts;
using BS.Shared.Extensions;

namespace AlphaEv.Validation
{
	public class CustomServiceRecordValidator : ServiceRecordValidator
	{
	    public override string[] GetIgnoreCategoriesForOverlappingCheck()
	    {
	        return new[] { "Arbeitszeiterfassung" };
	    }

	    //public override string[] GetIgnoreServiceDescriptionsForOverlappingCheck()
	    //{
	    //    return new[] { "Arbeitszeit", "Pause", "Urlaub", "Krank" };
	    //}

        public override List<ServiceRecordValidationResultDC> ValidateServiceRecord(ServiceRecordDC newServiceRecord, SupportConceptStatisticsDC statistics,
	        int maxDaysEditServiceRecordsAllowed, IList<long> employeeOids, IList<long> cb2scOids)
	    {
	        var list = base.ValidateServiceRecord(newServiceRecord, statistics, maxDaysEditServiceRecordsAllowed, employeeOids, cb2scOids);

	        if (newServiceRecord.ServiceDescription.Category.IsBillable && newServiceRecord.RoundedDuration == 0)
	        {
	            
	            list.Add(new ServiceRecordValidationResultDC
	            {
	                ResultType = ServiceRecordValidationResult.Custom,
	                Message = "Die Dauer muss größer als 0 sein."
	            });
	            
	        }

	        var sd = newServiceRecord.ServiceDescription.Name.ToLower();
	        var cat = newServiceRecord.ServiceDescription.Category.Name.ToLower();

	        if (cat.Contains("arztbesuch") ||
	            cat.Contains("krank") ||
	            cat.Contains("fortbildung") ||
	            cat.Contains("urlaub") ||
	            cat.Contains("indirekte zeiten") ||
	            (cat.Contains("betrieb") && cat.Contains("zeiten")))
	        {
	            if (sd.Contains("abwesend"))
	            {
	                if (!IAmNotTeamLeiter())
	                {
	                    list.Add(new ServiceRecordValidationResultDC
	                    {
	                        ResultType = ServiceRecordValidationResult.Custom,
	                        Message = "Dieser Eintrag kann nur von Fachleitungen oder Bereichsleitungen angelegt werden."
                        });
                    }
	            }
	        }

			if (cat.Contains("arbeitszeit") && !IAmNotTeamLeiter())
            {
				if (newServiceRecord.Start.Value.Date < DateTime.Now.Date)
				{
					list.Add(new ServiceRecordValidationResultDC
					{
						ResultType = ServiceRecordValidationResult.Custom,
						Message = "Das Datum darf nicht in der Vergangenheit liegen."
					});
				}
			}

            bool hasZukunftResult = false;

	        foreach (var r in list)
	        {
	            if (r.ResultType == ServiceRecordValidationResult.Custom && r.Message.Contains("Zukunft"))
	            {
	                hasZukunftResult = true;
	            }
	        }
	        if (!hasZukunftResult)
	        {
	            if (newServiceRecord.End.Value > DateTime.Now.AddMinutes(20))
	            {
	                list.Add(new ServiceRecordValidationResultDC
	                {
	                    ResultType = ServiceRecordValidationResult.Custom,
	                    Message = "Das gewählte Datum darf nicht in der Zukunft liegen."
	                });
	            }
	        }


            return list;
	    }

	    private bool IAmNotTeamLeiter()
	    {
	        ApplicationUser loggedInUser;

	        if (LoggedInUserOperationContextExt.Current != null &&
	            LoggedInUserOperationContextExt.Current.User != null)
	        {
	            loggedInUser = LoggedInUserOperationContextExt.Current.User;


	        }
	        else
	        {
	            loggedInUser = SessionFacade.LoggedInUser;
	        }

	        if (loggedInUser != null)
	        {
	            foreach (var group in loggedInUser.UserGroups)
	            {
	                if (group.Name == "Fachleitungen")
	                {
	                    return true;
	                }
	                if (group.Name == "Bereichsleitungen")
	                {
	                    return true;
	                }
                }
	        }

	        return false;
	    }
	}
}