using System;
using System.Collections.Generic;
using System.Linq;
using Sandbox;

namespace Sunless.Architecture;

public sealed class ArchPorchManifest : ArchKindManifest<ArchPorchPart>
{
	public override ArchKind Kind => ArchKind.Porch;

	public override string Slot => "Porches";

	public override IEnumerable<Type> Hosts => new[] { typeof( ArchRoom ) };

	public override string Label => "Porch";

	public override string Glyph => ArchIcons.Get( "subtool_porch", "deck" );

	public override string Subtool => ArchSubtools.Porch;

	public override string HostOutput => "Porch deck and open perimeter";

	public override IEnumerable<ArchKind> Children => new[]
	{
		ArchKind.Stair, ArchKind.Pillar, ArchKind.Trim, ArchKind.Roof, ArchKind.Cut
	};

	public override int DirectRank => 12;

	public override ArchLayerStage Stage( object payload ) => ArchLayerStage.Addition;

	public override IReadOnlyList<List<Vector2>> Loops( object payload )
	{
		if ( payload is not ArchPorchPart porch )
		{
			return Array.Empty<List<Vector2>>();
		}

		var footprint = ArchPorch.Footprint( porch );

		if ( footprint.Count < 3 )
		{
			return Array.Empty<List<Vector2>>();
		}

		return new List<List<Vector2>> { footprint };
	}

	public override float Height( object payload, float fallback )
	{
		return payload is ArchPorchPart porch ? porch.BaseHeight : fallback;
	}
}