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;

        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;
                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 { return Name; } // ?? String.Empty; }
        }

        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 SetRating(int? rating)
        {
            if (GoalEntryDC != null)
            {
                GoalEntryDC.Rating = rating;
            }

            if (rating == null)
            {
                foreach (var item in Children)
                {
                    item.SetRating(null);
                }
            }

            RaisePropertyChanged("HasRating");
            RaisePropertyChanged("RatingName");
            
        }

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

        
        public string RatingName
        {
            get
            {
                if (GoalEntryDC != null && GoalEntryDC.Rating.HasValue)
                {
                    switch (GoalEntryDC.Rating.Value)
                    {
                        case -1:
                            return "Keine Bewertung";
                        case 0:
                            return "xxx.0 - Problem nicht vorhanden (ohne, kein, unerheblich ...) 0 bis 4 %";
                        case 1:
                            return "xxx.1 - Problem leicht ausgeprägt (schwach, gering ...) 5 bis 24 %";
                        case 2:
                            return "xxx.2 - Problem mäßig ausgeprägt (mittel, ziemlich ...) 25 bis 49 %";
                        case 3:
                            return "xxx.3 - Problem erheblich ausgeprägt (hoch, äußerst ...) 50 bis 95 %";
                        case 4:
                            return "xxx.4 - Problem voll ausgeprägt (komplett, total ...) 96 bis 100 %";
                        case 8:
                            return "xxx.8 - Nicht spezifiziert";
                        case 9:
                            return "xxx.9 - Nicht anwendbar";
                    }
                }

                return null;
            }
        }
    }
}