using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using TINK.Model;
using TINK.Model.Connector;
using TINK.MultilingualResources;

namespace TINK.ViewModel.Settings
{
	/// <summary> Holds the filters to display..</summary>
	/// <remarks> Former name: FilterCollectionMutable.</remarks>
	public class SettingsBikeFilterViewModel : ObservableCollection<FilterItemMutable>, INotifyPropertyChanged
	{
		public new event PropertyChangedEventHandler PropertyChanged;

		/// <summary> Constructs a filter collection object.</summary>
		/// <param name="filterSettings">All available filters.</param>
		/// <param name="filterGroupUser">Filters which apply to logged in user.</param>
		public SettingsBikeFilterViewModel(
			IGroupFilterSettings filterSettings,
			IEnumerable<string> filterGroupUser)
		{
			foreach (var filter in filterSettings)
			{
				if (filter.Key == FilterHelper.CARGOBIKE)
				{
					var cargo = new FilterItemMutable(
						filter.Key,
						filter.Value,
						(filterGroupUser != null && filterGroupUser.Count() > 0) ? filterGroupUser.Contains(filter.Key) : true,
						AppResources.MarkingCargoBike);
					Add(cargo);

					cargo.PropertyChanged += (sender, ev) => PropertyChanged?.Invoke(sender, ev); 
					continue;
				}
				if (filter.Key == FilterHelper.CITYBIKE)
				{
					var city = new FilterItemMutable(
						filter.Key,
							filter.Value,
							(filterGroupUser != null && filterGroupUser.Count() > 0) ? filterGroupUser.Contains(filter.Key) : true,
							AppResources.MarkingCityBike);
					Add(city);
					city.PropertyChanged += (sender, ev) => PropertyChanged?.Invoke(sender, ev);
					continue;
				}

				var item = new FilterItemMutable(
					filter.Key,
						filter.Value,
						filterGroupUser != null ? filterGroupUser.Contains(filter.Key) : true,
						filter.Key);
				Add(item);
				item.PropertyChanged += (sender, ev) => PropertyChanged?.Invoke(sender, ev);
			}
		}

		/// <summary> Get filter collection which might have been modified for serialization purposes.</summary>
		public Dictionary<string, FilterState> FilterCollection
		{
			get
			{
				var dictionary = new Dictionary<string, FilterState>();
				foreach (var entry in this)
				{
					dictionary.Add(entry.Key, entry.State);
				}

				return dictionary;
			}
		}
	}
}