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

namespace Sunless.Architecture;

public sealed class ArchFenceManifest : ArchKindManifest<ArchFencePart>, IArchNormalizes {
	public override ArchKind Kind => ArchKind.Fence;

	public override string Slot => "Fences";

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

	// A fence rings a yard rather than a street, so it belongs to Buildings however much it reads as infrastructure.
	public override ArchLayerDomain Domain => ArchLayerDomain.Buildings;

	public override string Label => "Fence";

	public override string Glyph => ArchIcons.Get( "subtool_fence", "fence" );

	public override string Subtool => ArchSubtools.Fence;

	public override int DirectRank => 13;

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

	// Plans saved before fences carried a curve - lift the old path onto nodes once.
	public void Normalize( ArchPlan plan ) {
		if ( plan is null ) {
			return;
		}

		foreach ( var building in plan.Buildings ) {
			foreach ( var fence in building.Fences.Where( entry => entry.Path.Count >= 2 && entry.Nodes.Count == 0 ) ) {
				fence.Nodes = fence.Path.Select( ArchCurveNode.At ).ToList();
				fence.Path = new List<Vector3>();
			}
		}
	}
}