using Sandbox;
using System;
using System.Text.Json.Serialization;

namespace Saandy.Tilemapper;

public sealed class TileDefinition
{
	[Property, Hide]
	public Guid Id { get; set; }

	[Property]
	public string Name { get; set; }

	[Property]
	public Rect SourceRect { get; set; }

	[Property, Group( "Tags" ), Title( "Tile Tags" )]
	public TagSet Tags { get; set; } = new();

	[JsonIgnore, Hide]
	public TilesetResource Tileset { get; set; }

	public Vector4 GetUvRect()
	{
		if ( Tileset == null )
			return new Vector4( 0, 0, 1, 1 );

		Vector2Int textureSize = Tileset.GetTextureSize();

		float textureWidth = Math.Max( 1.0f, textureSize.x );
		float textureHeight = Math.Max( 1.0f, textureSize.y );

		return new Vector4(
			SourceRect.Left / textureWidth,
			SourceRect.Top / textureHeight,
			SourceRect.Width / textureWidth,
			SourceRect.Height / textureHeight
		);
	}
}