using Cryville.Common.Font;
using System;
using System.Reflection;
using TMPro;
using UnityEngine;
using UnityEngine.TextCore.LowLevel;
using UnityEngine.TextCore.Text;
using IFont = UnityEngine.Font;

namespace Cryville.Common.Unity.UI {
	[RequireComponent(typeof(TextMeshProUGUI))]
	public class TMPAutoFont : MonoBehaviour {
		public static Shader DefaultShader;
		public static FontMatcher FontMatcher;
		static FontAsset _font;
		TextMeshProUGUI _text;

		[SerializeField]
		Shader m_shader;
		void Awake() {
			if (FontMatcher == null) return;
			_text = GetComponent<TextMeshProUGUI>();
			if (_font == null) {
				foreach (var typeface in FontMatcher.MatchScript(null, true)) {
					try {
						var _ifont = new IFont(typeface.File.FullName);
						_font = (FontAsset)typeof(FontAsset).GetMethod("CreateFontAsset", BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof(IFont), typeof(int), typeof(int), typeof(int), typeof(GlyphRenderMode), typeof(int), typeof(int), typeof(AtlasPopulationMode), typeof(bool) },
							null).Invoke(null, new object[] { _ifont, typeface.IndexInFile, 90, 9, GlyphRenderMode.SDFAA, 1024, 1024, Type.Missing, Type.Missing });
						break;
					}
					catch (Exception) { }
				}
			}
			_text.font = _font;
			if (m_shader) _font.material.shader = m_shader;
			else if (DefaultShader) _font.material.shader = DefaultShader;
		}
	}
}