using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Text;

namespace DominionBase
{
	public class Option : IComparable<Option>
	{
		public bool IsRequired { get; }
		public IGameObject Source { get; }

		public string Text { get; }
		public string Value { get; internal set; }

		public Option(string text, bool isRequired = false, IGameObject source = null)
		{
			Text = text;
			IsRequired = isRequired;
			Value = text;
			Source = source;
		}

		public int CompareTo(Option option)
		{
			Contract.Requires(option != default(Option), "option cannot be null");
			if (ReferenceEquals(this, option))
				return 0;
			int v = string.Compare(Text, option.Text, StringComparison.CurrentCulture);
			if (v != 0)
				return v;
			v = string.Compare(Value, option.Value, StringComparison.CurrentCulture);
			if (v != 0)
				return v;
			return IsRequired.CompareTo(option.IsRequired);
		}
	}

	public class OptionCollection : List<Option>
	{
		public bool IsAnyRequired { get { return this.Any(o => o.IsRequired); } }
		public bool IsAllRequired { get { return this.All(o => o.IsRequired); } }

		public bool Contains(string item) { return this.Any(o => o.Text == item); }
		public void Add(string item, bool isRequired = false, IGameObject source = null) { Add(new Option(item, isRequired, source)); }
		public int IndexOf(string item) { return FindIndex(o => o.Text == item); }
		public bool Remove(string item)
		{
			if (!Contains(item))
				return false;
			Remove(Find(o => o.Text == item));
			return true;
		}

		public OptionCollection() : base() { }
		public OptionCollection(IEnumerable<Option> collection) : base(collection) { }
		public OptionCollection(IEnumerable<string> collection)
		{
			Contract.Requires(collection != null, "collection cannot be null");
			foreach (string item in collection)
				Add(new Option(item));
		}
		public OptionCollection(IEnumerable<string> collection, IGameObject source)
		{
			Contract.Requires(collection != null, "collection cannot be null");
			foreach (string item in collection)
				Add(new Option(item, source: source));
		}
	}
}