using System.Collections;

namespace Server.Engines.ConPVP
{
	public class Ruleset
	{
		public RulesetLayout Layout { get; }

		public BitArray Options { get; private set; }

		public string Title { get; set; }

		public Ruleset Base { get; private set; }

		public ArrayList Flavors { get; } = new ArrayList();

		public bool Changed { get; set; }

		public void ApplyDefault( Ruleset newDefault )
		{
			Base = newDefault;
			Changed = false;

			Options = new BitArray( newDefault.Options );

			ApplyFlavorsTo( this );
		}

		public void ApplyFlavorsTo( Ruleset ruleset )
		{
			for ( int i = 0; i < Flavors.Count; ++i )
			{
				Ruleset flavor = (Ruleset)Flavors[i];

				Options.Or( flavor.Options );
			}
		}

		public void AddFlavor( Ruleset flavor )
		{
			if ( Flavors.Contains( flavor ) )
				return;

			Flavors.Add( flavor );
			Options.Or( flavor.Options );
		}

		public void RemoveFlavor( Ruleset flavor )
		{
			if ( !Flavors.Contains( flavor ) )
				return;

			Flavors.Remove( flavor );
			Options.And( flavor.Options.Not() );
			flavor.Options.Not();
		}

		public void SetOptionRange( string title, bool value )
		{
			RulesetLayout layout = Layout.FindByTitle( title );

			if ( layout == null )
				return;

			for ( int i = 0; i < layout.TotalLength; ++i )
				Options[i + layout.Offset] = value;

			Changed = true;
		}

		public bool GetOption( string title, string option )
		{
			int index = 0;
			RulesetLayout layout = Layout.FindByOption( title, option, ref index );

			if ( layout == null )
				return true;

			return Options[layout.Offset + index];
		}

		public void SetOption( string title, string option, bool value )
		{
			int index = 0;
			RulesetLayout layout = Layout.FindByOption( title, option, ref index );

			if ( layout == null )
				return;

			Options[layout.Offset + index] = value;

			Changed = true;
		}

		public Ruleset( RulesetLayout layout )
		{
			Layout = layout;
			Options = new BitArray( layout.TotalLength );
		}
	}
}