using System.Runtime.CompilerServices;
using UnityEngine;

namespace SatorImaging.AppWindowUtility {
	public static class ResizeHelper {
		public static Vector2 GetDirection(Vector2 mousePosition, Vector2 screenSize) {
			float widthPercentage = mousePosition.x / screenSize.x;
			float heightPercentage = mousePosition.y / screenSize.y;

			const float marginHeightPercentage = 30f / 1920f;
			const float marginWidthPercentage = 30f / 1280f;

			if (widthPercentage < marginWidthPercentage) {
				if (heightPercentage > 1 - marginHeightPercentage)
					return new Vector2(-1, 1);
				if (heightPercentage < marginHeightPercentage)
					return new Vector2(-1, -1);

				return new Vector2(-1, 0);
			}

			if (widthPercentage > 1 - marginWidthPercentage) {
				if (heightPercentage > 1 - marginHeightPercentage)
					return new Vector2(1, 1);
				if (heightPercentage < marginHeightPercentage)
					return new Vector2(1, -1);

				return new Vector2(1, 0);
			}

			if (heightPercentage > 1 - marginHeightPercentage)
				return new Vector2(0, 1);

			if (heightPercentage < marginHeightPercentage)
				return new Vector2(0, -1);

			return Vector2.zero;
		}
	}
}