using System.Security.Cryptography;
using System.Text;
using Newtonsoft.Json;
using SharpDX;
using SparkClient.Views.UserControl.ViewportData.Entity;
using SparkClient.Views.UserControl.ViewportData.Enum;

namespace SparkClient.Views.UserControl.ViewportData.Helper;

public class CommonHelper
{
    public static Viewport3DTriangleEntity CreateByJsonStr(string json)
    {
        // 解析 JSON 数据
        var jsonObject = JsonConvert.DeserializeObject<dynamic>(json);
        if (jsonObject == null) throw new ArgumentException("Json object is null");
        // 提取坐标
        var coords = jsonObject.coords.ToObject<dynamic[]>();
        if (coords.Length < 3)
        {
            throw new ArgumentException("The input JSON does not have enough points to form a triangle.");
        }
        
        // 创建三角形顶点
        var point1 = new Vector3((float)coords[0].x, (float)coords[0].z, (float)coords[0].y);
        var point2 = new Vector3((float)coords[1].x, (float)coords[1].z, (float)coords[1].y);
        var point3 = new Vector3((float)coords[2].x, (float)coords[2].z, (float)coords[2].y);
        // var point1 = new Vector3((float)coords[0].x, (float)coords[0].y, (float)coords[0].z);
        // var point2 = new Vector3((float)coords[1].x, (float)coords[1].y, (float)coords[1].z);
        // var point3 = new Vector3((float)coords[2].x, (float)coords[2].y, (float)coords[2].z);
        
        // 提取 PlaneCode 和 PlaneType
        string planeCode = jsonObject.facet_id ?? (string)jsonObject.facet_id;
        PlaneType planeType = (PlaneType)(int)jsonObject.facet_type;
        
        // 生成 TriangleCode
        var triangleCode = GenerateTriangleCode(point1, point2, point3);

        // 创建并返回实体对象
        return new Viewport3DTriangleEntity
        {
            Point1 = point1,
            Point2 = point2,
            Point3 = point3,
            TriangleCode = triangleCode,
            PlaneCode = planeCode,
            PlaneType = planeType
        };
       
    }
    
    /// <summary>
    /// 生成三角形签名
    /// </summary>
    /// <param name="p1"></param>
    /// <param name="p2"></param>
    /// <param name="p3"></param>
    /// <returns></returns>
    public static string GenerateTriangleCode(Vector3 p1, Vector3 p2, Vector3 p3)
    {
        var concatenated = $"{p1.X},{p1.Y},{p1.Z};{p2.X},{p2.Y},{p2.Z};{p3.X},{p3.Y},{p3.Z}";
        return GenerateMd5Hash(concatenated);
    }
    /// <summary>
    /// 文本转32大写MD5
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    private static string GenerateMd5Hash(string input)
    {
        using (var md5 = MD5.Create())
        {
            var inputBytes = Encoding.UTF8.GetBytes(input);
            var hashBytes = md5.ComputeHash(inputBytes);
            return string.Concat(hashBytes.Select(b => b.ToString("X2")));
        }
    }
}