using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows;
using BeWo.Scheduling.SchedulingUtils;
using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Extensions;
using DevExpress.Xpf.Scheduling;
using DevExpress.XtraScheduler;
using SchedulerControl = DevExpress.Xpf.Scheduling.SchedulerControl;
using Utils = BS.Shared.Core.Utils;

namespace BeWo.Scheduling.ViewModel
{
    public class AppointmentWindowVM : AppointmentWindowViewModel
    {
        #region Verfügbage Mitarbeiter, Klienten und Ressourcen
        private ObservableCollection<CompactEmployeeDC> _AllEmployees;
        public ObservableCollection<CompactEmployeeDC> AllEmployees
        {
            get => _AllEmployees;
            set
            {
                if(!ICollectionExtensions.ListEquals(_AllEmployees, value))
                {
                    _AllEmployees = value;

                    RaisePropertyChanged(nameof(AllEmployees));
                }
            }
        }

        private ObservableCollection<CompactCustomerDC> _AllCustomers;
        public ObservableCollection<CompactCustomerDC> AllCustomers
        {
            get => _AllCustomers;
            set
            {
                if(!ICollectionExtensions.ListEquals(_AllCustomers, value))
                {
                    _AllCustomers = value;

                    RaisePropertyChanged(nameof(AllCustomers));
                }
            }
        }

        private ObservableDictionary<CategoryDependencyObject, List<ResourceDependencyObject>> _AllCategories2Resources;
        public ObservableDictionary<CategoryDependencyObject, List<ResourceDependencyObject>> AllCategories2Resources
        {
            get => _AllCategories2Resources;
            set
            {
                if(!SchedulingUtils.Utils.Categories2ResourcesEquals(_AllCategories2Resources, value))
                {
                    _AllCategories2Resources = value;

                    RaisePropertiesChanged(nameof(AllCategories2Resources));
                }
            }
        }
        #endregion

        public string OriginalRecurrenceInfo { get; }

        public SchedulingAppointmentVM ActualViewModel { get; }

        public ObservableCollection<Employee2SchedulerAppointmentDC> EmployeeList
        {
            get => ActualViewModel.EmployeeList; //Appointment.CustomFields["EmployeeList"] as ObservableCollection<Employee2SchedulerAppointmentDC>;
            set => ActualViewModel.EmployeeList = value; //Appointment.CustomFields["EmployeeList"] = value;
        }

        public List<CompactCustomerDC> CustomerList
        {
            get => ActualViewModel.CustomerList; //Appointment.CustomFields["CustomerList"] as List<CompactCustomerDC>;
            set => ActualViewModel.CustomerList = value; //Appointment.CustomFields["CustomerList"] = value;
        }

        public List<ResourceDC> ResourceList
        {
            get => ActualViewModel.ResourceList; //Appointment.CustomFields["ResourceList"] as List<ResourceDC>;
            set => ActualViewModel.ResourceList = value; //Appointment.CustomFields["ResourceList"] = value;
        }

        public ObservableCollection<CompactSupportConceptDC> SupportConceptList
        {
            get => ActualViewModel.SupportConceptList; //Appointment.CustomFields["SupportConceptList"] as List<CompactSupportConceptDC>;
            set => ActualViewModel.SupportConceptList = value; //Appointment.CustomFields["SupportConceptList"] = value;
        }

        public bool IsTask
        {
            get => ActualViewModel.IsTask; //Appointment.CustomFields["IsTask"] is bool isTask && isTask;
            set => ActualViewModel.IsTask = value; //Appointment.CustomFields["IsTask"] = value;
        }

        public bool IsPrivate
        {
            get => ActualViewModel.IsPrivate; //Appointment.CustomFields["IsPrivate"] is bool isPrivate && isPrivate;
            set => ActualViewModel.IsPrivate = value; //Appointment.CustomFields["IsPrivate"] = value;
        }

        public bool IsReadyOnly { get; }

        public bool IsNew => ActualViewModel?.IsNew ?? false;

        public CompactEmployeeDC Originator
        {
            get => ActualViewModel.Originator; //Appointment.CustomFields["Originator"] as CompactEmployeeDC;
            set => ActualViewModel.Originator = value; //Appointment.CustomFields["Originator"] = value;
        }

        public bool IsAbsenceTime => ActualViewModel.IsAbsenceTime; //Appointment.CustomFields["IsAbsenceTime"] is bool isAbsenceTime && isAbsenceTime;

        public string TaskDescription
        {
            get => ActualViewModel.TaskDescription; //Appointment.CustomFields["TaskDescription"] as string;
            set => ActualViewModel.TaskDescription = value; //Appointment.CustomFields["TaskDescription"] = value;
        }

        public string CompletedNotice
        {
            get => ActualViewModel.CompletedNotice; //Appointment.CustomFields["CompletedNotice"] as string;
            set => ActualViewModel.CompletedNotice = value; //Appointment.CustomFields["CompletedNotice"] = value;
        }

        public DateTime? CompletedDate
        {
            get => ActualViewModel.CompletedDate; //Appointment.CustomFields["CompletedDate"] as DateTime?;
            set => ActualViewModel.CompletedDate = value; //Appointment.CustomFields["CompletedDate"] = value;
        }

        public DateTime? DueDate
        {
            get => ActualViewModel.DueDate; //Appointment.CustomFields["DueDate"] as DateTime?;
            set => ActualViewModel.DueDate = value; //Appointment.CustomFields["DueDate"] = value;
        }

        public DateTime? DueTime
        {
            get => ActualViewModel.DueTime; //Appointment.CustomFields["DueTime"] as DateTime?;
            set => ActualViewModel.DueTime = value; //Appointment.CustomFields["DueTime"] = value;
        }

        public long? Oid => Appointment.Id as long?;

        public string RecurrenceTypeName => TranslateRecurrenceInfoType();


        public ObservableCollection<string> AvailableAppointmentRecurrenceTypes
        {
            get;
        }

        public Visibility RecurrenceButtonVisibility => (Appointment.Type == AppointmentType.Pattern || Appointment.Type == AppointmentType.Normal) && !IsTask ? Visibility.Visible : Visibility.Collapsed;

        public AppointmentWindowVM(
            AppointmentItem appointmentItem,
            SchedulerControl scheduler,
            ObservableCollection<CompactEmployeeDC> allEmployees,
            ObservableCollection<CompactCustomerDC> allCustomers,
            ObservableDictionary<CategoryDependencyObject, List<ResourceDependencyObject>> allCategories2Resources,
            CompactEmployeeDC originator,
            List<long> teamMemberCustomerOids,
            SchedulingAppointmentVM viewModel)
            : base(appointmentItem, scheduler)
        {
            ActualViewModel = viewModel;

            OriginalRecurrenceInfo = viewModel.RecurrenceInfo;

            AllEmployees = allEmployees;
            AllCustomers = allCustomers;
            AllCategories2Resources = allCategories2Resources;

            ActualViewModel.Originator = originator;

            ActualViewModel.SetDirty(false);

            var userRightsCheckType = IsNew ? SchedulerRightsCheckType.Create : SchedulerRightsCheckType.Edit;
            
            IsReadyOnly = !Utils.CheckSchedulerRights(CustomerList.ToList(), ResourceList.ToList(), EmployeeList.ToList(), Originator, IsNew, userRightsCheckType, BeWoApp.LoggedOnUser, teamMemberCustomerOids);

            AvailableAppointmentRecurrenceTypes = new ObservableCollection<string>
            {
                "(keine)",
                "täglich",
                "wöchentlich",
                "monatlich",
                "jährlich"
            };
        }

        private string TranslateRecurrenceInfoType()
        {
            if(RecurrenceInfo is null)
            {
                return "(keine)";
            }

            switch(RecurrenceInfo.Type)
            {
                case RecurrenceType.Daily:
                    return "täglich";
                case RecurrenceType.Weekly:
                    return "wöchentlich";
                case RecurrenceType.Monthly:
                    return "monatlich";
                case RecurrenceType.Yearly:
                    return "jährlich";
                default:
                    return "(keine)";
            }
        }
    }
}