using System.Linq;

namespace Sunless.Architecture;

public sealed class ArchWallExpectedReport : IArchExpectedReport {
	public ArchKind Kind => ArchKind.Wall;

	public object Describe( object payload, ArchTarget target, ArchTool tool ) {
		if ( payload is not ArchWall wall || target.Room is null ) {
			return null;
		}

		var room = target.Room;
		var kit = tool.Kit;
		var height = ArchWallSection.Height( wall, room, kit );

		return new {
			wall.Id,
			Start = $"{wall.Start.x:0.#},{wall.Start.y:0.#}",
			End = $"{wall.End.x:0.#},{wall.End.y:0.#}",
			wall.Length,
			Height = height,
			Thickness = wall.Thickness > 0f ? wall.Thickness : kit.WallThickness,
			BaseZ = room.BaseHeight,
			TopZ = room.BaseHeight + height,
			Cladding = wall.Cladding.ToString(),
			wall.Wainscot,
			wall.Baseboard,
			wall.Cap,
			Bands = ArchWallTreatments.Ordered( wall.Bands, height )
				.Select( band => $"{band.At( height ):0.#}{(band.AtHead ? " (head)" : "")} {band.Field}"
					+ $"{(band.Course ? $" {band.Seat.ToString().ToLowerInvariant()} course" : "")}" )
				.ToList(),
			Pilasters = wall.Pilasters.Stands ? $"{wall.Pilasters.Bay:0.#} bay, {wall.Pilasters.Width:0.#} wide" : null,
			// The entablature is the STOREY's ring, filed under the room as its own Cornice piece - this wall only
			// names the style and hands the ring the segment it covers.
			Cornice = string.IsNullOrWhiteSpace( wall.Cornice )
				? null
				: $"{wall.Cornice} on the storey ring, soffit at "
					+ $"{room.BaseHeight + ArchStoreyCornice.Soffit( wall, kit, height ):0.#}",
			Openings = wall.Openings.Select( opening => new {
				opening.Id,
				opening.Preset,
				Kind = opening.Kind.ToString(),
				opening.Offset,
				opening.Width,
				opening.Height,
				opening.SillHeight,
				LeftAlong = opening.Left,
				RightAlong = opening.Right,
				BottomZ = room.BaseHeight + opening.SillHeight,
				TopZ = room.BaseHeight + opening.Top,
				Glazed = opening.IsGlazed,
				Hung = opening.IsHung,
				Furniture = opening.Fitted.ToString()
			} ).ToList()
		};
	}
}