using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Windows.Media;

namespace BS.Shared.DataContracts.ClientPartials
{
    public class SupportConceptGoalDC : INotifyPropertyChanged, IFilterableDC
    {
        private List<SupportConceptGoalDC> _Children;

        private ValueListEntryDC _GoalEntryDC;

        private bool _IsChecked;

        private bool _IsExpanded;

        private bool _ShowNotice;

        private bool _CheckRecursive = true;

        public long? KeyField => GoalEntryDC?.ValueListEntryOid;

        public long? ParentField => ParentGoal?.GoalEntryDC?.ValueListEntryOid;

        public bool CheckRecursive {
            get { return _CheckRecursive; }
            set { _CheckRecursive = value; }
        }

        public List<SupportConceptGoalDC> Children
        {
            get { return _Children ?? (_Children = new List<SupportConceptGoalDC>()); }

            set { _Children = value; }
        }

        public ValueListEntryDC GoalEntryDC
        {
            get { return _GoalEntryDC; }

            set { _GoalEntryDC = value; }
        }

        public bool HasParent => ParentGoal != null;

        public bool HasNotice => GoalEntryDC != null && !string.IsNullOrEmpty(GoalEntryDC.Notice);

        public bool ShowNotice
        {
            get => _ShowNotice;

            set
            {
                _ShowNotice = value;
                

                RaisePropertyChanged("ShowNotice");
            }
        }

        public bool IsChecked
        {
            get => _IsChecked;

            set
            {
                _IsChecked = value;
                if (CheckRecursive)
                {
                    foreach (var item in Children)
                    {
                        item.IsChecked = value;
                    }
                }

                RaisePropertyChanged("IsChecked");
            }
        }

        public bool IsExpanded
        {
            get => _IsExpanded;

            set
            {
                _IsExpanded = value;
                RaisePropertyChanged("IsExpanded");
            }
        }

        public string Name => DetailDescription;

        public SupportConceptGoalDC ParentGoal { get; set; }

        public event PropertyChangedEventHandler PropertyChanged;

        public SolidColorBrush FilterableBrush => new SolidColorBrush(Colors.Transparent);

        protected void RaisePropertyChanged(string propertyName)
        {
            var propertyChanged = PropertyChanged;

            propertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        public override string ToString()
        {
            return GoalEntryDC == null ? "-" : GoalEntryDC.TypeDescription;
        }

        #region IFilterableDC Members

        public string IconPath
        {
            get { return string.Empty; }
        }

        public string DetailDescription
        {
            get { return GoalEntryDC.DisplayName; }
        }

        public string FilterRelevants
        {
            get
            {
                String filter = this.Name + " " + this.GoalEntryDC?.Abbreviation;

                if (this.Children != null)
                {
                    foreach (var child in this.Children)
                    {
                        filter += " ";
                        filter += child.FilterRelevants;
                    }
                }

                return filter;
            }
        }

        public bool SupportsActivationType
        {
            get { return true; }
        }

        public long Version
        {
            get { return 0; }

            set { }
        }

        public string SimpleDescription
        {
            get { return Name; }
        }

        public ActivationTypeId ActivationType
        {
            get { return ActivationTypeId.Active; }

            set { }
        }

        #endregion

        public void SetRatingType(RatingTypeDC rt)
        {
            if (GoalEntryDC != null && rt != null)
            {
                GoalEntryDC.RatingTypeOid = rt.RatingTypeOid.Value;

                RatingName = rt.DisplayName;
            }

            if (rt == null && GoalEntryDC != null)
            {
                GoalEntryDC.RatingTypeOid = null;

                RatingName = "";
                //foreach (var item in Children)
                //{
                //    item.SetRatingType(null);
                //}
            }
            
            RaisePropertyChanged("HasRating");
            RaisePropertyChanged("RatingName");
            
        }

        public bool HasRating => GoalEntryDC != null && GoalEntryDC.RatingTypeOid.HasValue;

        public string RatingName { get; set; }

        public bool IsZiel
        {
            get
            {
                return IsOfType(ValueListEntryType.SupportConceptGoalCategoryType);
            }
        }

        public bool IsIndZiel
        {
            get
            {
                return IsOfType(ValueListEntryType.SupportConceptIndividualGoalCategoryType);
            }
        }

        public bool IsMassnahme
        {
            get
            {
                return IsOfType(ValueListEntryType.SupportConceptGoalType);
            }
        }

        public bool IsIndMassnahme
        {
            get
            {
                return IsOfType(ValueListEntryType.SupportConceptIndividualGoalType);
            }
        }

        public bool IsOfType(ValueListEntryType t)
        {
            if (_GoalEntryDC != null)
            {
                return _GoalEntryDC.Type == t;
            }

            return false;
        }
    }
}