using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
using AnotherFileBrowser.Windows;
using BITKit;
using BITKit.IO;
using BITKit.UX;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.UIElements;
using Button = UnityEngine.UIElements.Button;
using Image = UnityEngine.UI.Image;
using Slider = UnityEngine.UIElements.Slider;

namespace BITFactory.Cutting.UX
{
	public class UXReferenceImage : MonoBehaviour
	{
		[SerializeField] private Texture2D defaultTexture;

		[SerializeField] private RawImage worldImage;

		[UXBindPath("pick-image-button")] private Button pickImageButton;
		[UXBindPath("reference-image")] private VisualElement referenceImage;
		[UXBindPath("2d-opacity-slider")] private Slider opacitySlider;
		[UXBindPath("3d-opacity-slider")] private Slider worldOpacitySlider;

		private void Start()
		{
			UXUtils.Inject(this);

			opacitySlider.RegisterValueChangedCallback(x => { referenceImage.SetOpacity(x.newValue); });
			worldOpacitySlider.RegisterValueChangedCallback(x =>
			{
				worldImage.color = new Color(1, 1, 1, x.newValue);
			});

			referenceImage.SetOpacity(0);
			worldImage.color = new Color(1, 1, 1, 0);

			opacitySlider.SetValueWithoutNotify(0);
			worldOpacitySlider.SetValueWithoutNotify(0);

			if (defaultTexture)
			{
				worldImage.texture = defaultTexture;
				referenceImage.style.backgroundImage = defaultTexture;
			}

			pickImageButton.clicked += PickImage;
		}

		private void PickImage()
		{
			new Thread(() =>
			{
				new FileBrowser().OpenFileBrowser(new BrowserProperties(),PickImage);
			}).Start();
		}

		private async void PickImage(string path)
		{
			await UniTask.SwitchToMainThread();
			if (destroyCancellationToken.IsCancellationRequested) return;
			var texture = new Texture2D(2, 2);
			if (texture.LoadImage(await System.IO.File.ReadAllBytesAsync(path)) is false)
			{
				Alert.Print("无法加载图片", "请检查选择的文件是否为图片");
				return;
			}
			worldImage.texture = texture;
			referenceImage.style.backgroundImage = texture;
		}
	}
}