using BS.Shared.DataContracts;
using System;
using System.Collections.Generic;
using System.Linq;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Extensions;

namespace BeWoPlanerMobil.Models
{
    [Serializable]
    public class AppointmentModel : AbstractModel
    {
        public AppointmentSessionModel AppointmentSessionModel => SessionModel as AppointmentSessionModel;

        public long? Oid { get; set; }
        public int? EventType { get; set; }
        public int? Label { get; set; }
        public bool AllDay { get; set; }
        public string Location { get; set; }
        public int? Status { get; set; }
        public string RecurrenceInfo { get; set; }
        public string Subject { get; set; }
        public DateTime? StartTime { get; set; }
        public DateTime? EndTime { get; set; }
        public string Description { get; set; }
        public bool IsPrivate { get; set; }
        public bool CanBeEdited { get; set; }
        public bool IsTask { get; set; }
        public DateTime? DueDate { get; set; }
        public DateTime? CompletedDate { get; set; }
        public string CompletedNotice { get; set; }
        public string CompletedUser { get; set; }
        public string TaskDescription { get; set; }
        public bool HasServiceRecordEntry { get; set; }
        public long? OriginatorOid { get; set; }

        public bool ShowEmployeeColors { get; set; }
        public List<ServiceRecordDC> ServiceRecordList { get; set; }

        #region Mitarbeiter
        public List<CompactEmployeeDC> PossibleEmployees { get; set; }

        public int EmployeePageLimit => 10;

        public int EmployeePageCount => (PossibleEmployees?.Count ?? 0) / EmployeePageLimit;

        public List<Employee2SchedulerAppointmentDC> SelectedEmployee2SchedulerAppointments { get; set; }

        public List<CompactEmployeeDC> SelectedEmployees { get; set; }

        public List<long> SelectedEmployeeOids
        {
            get => AppointmentSessionModel.SelectedEmployeeOids;
            set => AppointmentSessionModel.SelectedEmployeeOids = value;
        }

        public List<long> SelectedEmployee2AppointmentOids
        {
            get => AppointmentSessionModel.SelectedEmployees2AppointmentOids;
            set => AppointmentSessionModel.SelectedEmployees2AppointmentOids = value;
        }
        #endregion

        #region Klienten
        public List<CompactCustomerDC> PossibleCustomers { get; set; }

        public int CustomerPageLimit => 10;

        public int CustomerPageCount => (PossibleCustomers?.Count ?? 0) / CustomerPageLimit;

        public List<CompactCustomerDC> SelectedCustomers
        {
            get
            {
                return SelectedCustomerOids is null ? null : PossibleCustomers.Where(customer => SelectedCustomerOids.Contains(customer.CustomerOid)).ToList();
            }

            set
            {
                SelectedCustomerOids = value?.Select(customer => customer.CustomerOid).ToList();
            }
        }

        public List<long> SelectedCustomerOids
        {
            get => AppointmentSessionModel.SelectedCustomerOids;
            set => AppointmentSessionModel.SelectedCustomerOids = value;
        }
        #endregion

        #region Ressourcen
        public Dictionary<ValueListEntryDC, List<ResourceDC>> ResourceCategories2Resources { get; set; }
        public List<ResourceDC> PossibleResources { get; set; }

        public int ResourcePageLimit => 10;

        public int ResourcePageCount => (ResourceCategories2Resources?.Keys?.Count ?? 0) / ResourcePageLimit;

        public List<ResourceDC> SelectedResources
        {
            get
            {
                return SelectedResourceOids is null ?
                    null :
                    PossibleResources.Where(resource => resource.ResourceOid.HasValue && SelectedResourceOids.Contains(resource.ResourceOid.Value)).ToList();
            }

            set
            {
                SelectedResourceOids = value?.Where(resource => resource.ResourceOid.HasValue).Select(resource => resource.ResourceOid.Value).ToList();
            }
        }

        public List<long> SelectedResourceOids
        {
            get => AppointmentSessionModel.SelectedResourceOids;
            set => AppointmentSessionModel.SelectedResourceOids = value;
        }
        #endregion


        public AppointmentModel()
        {
            SessionModel = new AppointmentSessionModel();
        }

        public AppointmentModel(List<CompactCustomerDC> possibleCustomers, List<ResourceDC> possibleResources, List<CompactEmployeeDC> possibleEmployees, UserDC user, List<CompactCustomerDC> selectedCustomers, List<ResourceDC> selectedResources, List<Employee2SchedulerAppointmentDC> employee2Appointments)
        {
            LoggedInUser = user;

            SessionModel = new AppointmentSessionModel();

            SelectedCustomers = selectedCustomers;
            SelectedCustomerOids = selectedCustomers.Select(customer => customer.CustomerOid).ToList();

            SelectedEmployee2SchedulerAppointments = employee2Appointments;
            SelectedEmployee2AppointmentOids = employee2Appointments
                .Where(employee2Appointment => employee2Appointment.Employee2SchedulerAppointmentOid.HasValue)
                .Select(employee2Appointment => employee2Appointment.Employee2SchedulerAppointmentOid.Value).ToList();

            SelectedEmployees = employee2Appointments.Select(employee2Appointment => employee2Appointment.Employee).ToList();
            SelectedEmployeeOids = employee2Appointments.Select(employee2Appointment => employee2Appointment.Employee.EmployeeOid).ToList();

            SelectedResources = selectedResources;
            SelectedResourceOids = selectedResources
                .Where(resource => resource.ResourceOid.HasValue)
                .Select(resource => resource.ResourceOid.Value).ToList();

            PossibleCustomers = possibleCustomers;
            PossibleResources = possibleResources;
            PossibleEmployees = possibleEmployees;

            if(PossibleCustomers.Count == 0 && selectedCustomers.Count > 0)
            {
                PossibleCustomers = selectedCustomers;
            }

            if(PossibleResources.Count == 0 && selectedResources.Count > 0)
            {
                PossibleResources = selectedResources;
            }

            if(PossibleEmployees.Count == 0 && SelectedEmployees.Count > 0)
            {
                PossibleEmployees = SelectedEmployees;
            }

            ResourceCategories2Resources = new Dictionary<ValueListEntryDC, List<ResourceDC>>();

            foreach(var resource in PossibleResources)
            {
                ResourceCategories2Resources.AddOrUpdateValueInDictionary(resource.ResourceCategory, resource);
            }

            
        }

        public AppointmentModel(SchedulerAppointmentDC appointment)
        {
            if(appointment is null)
            {
                return;
            }

            SessionModel = new AppointmentSessionModel();

            Oid = appointment.SchedulerAppointmentOid;
            EventType = appointment.Type;
            AllDay = appointment.AllDay;
            Location = appointment.Location;
            Status = appointment.Status;
            RecurrenceInfo = appointment.RecurrenceInfo;
            Subject = appointment.Subject;
            StartTime = appointment.StartDate;
            EndTime = appointment.EndDate;
            Description = appointment.Description;

            SelectedCustomers = appointment.CustomerList;
            SelectedEmployees = appointment.EmployeeList?.Select(employee2Appointment => employee2Appointment.Employee)?.ToList();
            SelectedEmployee2SchedulerAppointments = appointment.EmployeeList;
            SelectedResources = appointment.ResourceList;
            HasServiceRecordEntry = appointment.HasServiceRecordEntry;
            ServiceRecordList = appointment.ServiceRecordList;
            CanBeEdited = appointment.CanBeEdited;
            IsPrivate = appointment.IsPrivate;

            IsTask = appointment.IsTask;
            DueDate = appointment.DueDate;
            CompletedDate = appointment.CompletedDate;
            CompletedNotice = appointment.CompletedNotice;
            CompletedUser = appointment.CompletedUser;
            TaskDescription = appointment.TaskDescription;

            OriginatorOid = appointment.Originator.EmployeeOid;
        }

        public virtual void Assign(AppointmentModel source)
        {
            if(source is null)
            {
                return;
            }

            Oid = source.Oid;
            EventType = source.EventType;
            Label = source.Label;
            AllDay = source.AllDay;
            Location = source.Location;
            Status = source.Status;
            RecurrenceInfo = source.RecurrenceInfo;
            Subject = source.Subject;
            StartTime = source.StartTime;
            EndTime = source.EndTime;
            Description = source.Description;

            SelectedCustomers = source.SelectedCustomers;
            SelectedEmployees = source.SelectedEmployees;
            SelectedEmployee2SchedulerAppointments = source.SelectedEmployee2SchedulerAppointments;
            SelectedResources = source.SelectedResources;
            HasServiceRecordEntry = source.HasServiceRecordEntry;
            ServiceRecordList = source.ServiceRecordList;
            CanBeEdited = source.CanBeEdited;
            IsPrivate = source.IsPrivate;

            IsTask = source.IsTask;
            DueDate = source.DueDate;
            CompletedDate = source.CompletedDate;
            CompletedNotice = source.CompletedNotice;
            CompletedUser = source.CompletedUser;
            TaskDescription = source.TaskDescription;

            OriginatorOid = source.OriginatorOid;
        }
    }
}