using Hi.Disp;
using Hi.Disp.Flag;
using Hi.Geom;
using Hi.Machining.MachiningEquipmentUtils;
using Hi.Mech.Topo;
using Hi.Numerical;
using System;

namespace Sample.Disp;

/// <summary>
/// Displayee for ISO coordinate entry visualization.
/// </summary>
public class IsoCoordinateEntryDisplayee : IAnchoredDisplayee
{
	/// <summary>
	/// Gets or sets the ISO coordinate key (e.g. "G54", "G59.2").
	/// </summary>
	public string IsoCoordinateId { get; set; } = "G54";
	/// <summary>
	/// Gets or sets the function that provides the NcEnv instance.
	/// </summary>
	public Func<HardNcEnv> NcEnvFunc { get; set; }

	/// <summary>
	/// Gets or sets the function that provides the machining equipment.
	/// </summary>
	public Func<IMachiningEquipment> MillingEquipmentFunc { get; set; }
	HardNcEnv NcEnv => NcEnvFunc?.Invoke();
	/// <summary>
	/// Initializes a new instance of the <see cref="IsoCoordinateEntryDisplayee"/> class.
	/// </summary>
	/// <param name="ncEnvFunc">The function that provides the NcEnv instance.</param>
	/// <param name="millingEquipmentSource">The function that provides the machining equipment.</param>
	public IsoCoordinateEntryDisplayee(Func<HardNcEnv> ncEnvFunc,
		Func<IMachiningEquipment> millingEquipmentSource)
	{
		NcEnvFunc = ncEnvFunc;
		MillingEquipmentFunc = millingEquipmentSource;
	}
	/// <inheritdoc/>
	public void Display(Bind bind)
	{
		HardNcEnv ncEnv = NcEnv;
		if (ncEnv == null)
			return;

		Vec3d coordinateMove;
		string text;

		if (ncEnv.IsoCoordinateTable?.TryGetValue(
				IsoCoordinateId, out coordinateMove) != true
			|| coordinateMove == null)
			return;
		if (coordinateMove == null)
			return;
		text = IsoCoordinateId ?? "";

		Vec3d attacherPos = MillingEquipmentFunc?.Invoke()
			?.GetIsoCoordinatePosition(coordinateMove);

		bind.ModelMatStack.Push();
		bind.ModelMatStack.Trans(attacherPos);
		CoordinateDrawing.Display(bind, text);
		bind.ModelMatStack.Pop();
	}
	/// <inheritdoc/>
	public void ExpandToBox3d(Box3d dst)
	{
		HardNcEnv ncEnv = NcEnv;
		if (ncEnv == null)
			return;
		Vec3d coordinateMove;
		if (ncEnv.IsoCoordinateTable?.TryGetValue(IsoCoordinateId, out coordinateMove) != true
			|| coordinateMove == null)
			return;

		Vec3d attacherPos = MillingEquipmentFunc?.Invoke()
			?.GetIsoCoordinatePosition(coordinateMove);
		if (attacherPos == null)
			return;
		dst.Expand(attacherPos);
	}
	/// <inheritdoc/>
	/// <returns>Table Buckle if existed; otherwise, return null.</returns>
	public Anchor GetAnchor()
	{
		return MillingEquipmentFunc?.Invoke()?.GetMachiningChain()?.GetAnchor();
	}
}