using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using ZXing;
using ZXing.QrCode;
using Cysharp.Threading.Tasks;
using ZXing.Common;
namespace BITKit.UX.Components
{
    [System.Serializable]
    public class ZXingQRBuilder : StringComponent
    {
        public TranslateSO so;
        public UXImage image;
        protected override async void OnSet(string value)
        {
            var url = so.Get(value, false);
            await UniTask.SwitchToMainThread();
            var tex = GenerateQRImageWithColor(url, 256, 256, Color.black, out var bitMatrix);
            image.Set(tex);
        }

        /// <param name="height"></param>
        Texture2D GenerateQRImageWithColor(string content, int width, int height, Color color, out BitMatrix bitMatrix)
        {
            // 编码成color32
            MultiFormatWriter writer = new MultiFormatWriter();
            Dictionary<EncodeHintType, object> hints = new Dictionary<EncodeHintType, object>();
            //设置字符串转换格式，确保字符串信息保持正确
            hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
            // 设置二维码边缘留白宽度（值越大留白宽度大，二维码就减小）
            hints.Add(EncodeHintType.MARGIN, 1);
            hints.Add(EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.M);
            //实例化字符串绘制二维码工具
            bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);

            // 转成texture2d
            int w = bitMatrix.Width;
            int h = bitMatrix.Height;
            Texture2D texture = new Texture2D(w, h);
            for (int x = 0; x < h; x++)
            {
                for (int y = 0; y < w; y++)
                {
                    if (bitMatrix[x, y])
                    {
                        texture.SetPixel(y, x, color);
                    }
                    else
                    {
                        texture.SetPixel(y, x, Color.white);
                    }
                }
            }
            texture.Apply();

            //byte[] bytes = texture.EncodeToPNG();
            //string path = System.IO.Path.Combine(Application.dataPath, "qr.png");
            //System.IO.File.WriteAllBytes(path, bytes); 
            return texture;
        }
    }
}