using System.Runtime.InteropServices;
using System.Windows.Forms;
using Newtonsoft.Json.Linq;

namespace SparkClient.Model.Services
{
    public class AlgorithmServer
    {
        // 使用 P/Invoke 声明 C++ 函数
        [DllImport("../../../Libs/AlgorithmServer.dll", CallingConvention = CallingConvention.Cdecl)]
        private static extern double Add(double a, double b);

        [DllImport("../../../Libs/AlgorithmServer.dll", CallingConvention = CallingConvention.Cdecl)]
        private static extern double Multiply(double a, double b);

        // 导入 C++ DLL 中的 ParseJsonAndReturnActions 函数
        [DllImport("../../../Libs/AlgorithmServer.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
        private static extern IntPtr ParseJsonAndReturnActions(byte[] jsonData);
        
        // 添加公共方法供外部调用
        public string CallParseJsonAndReturnActions(JObject jsonData)
        {
            string jsonDataString = jsonData.ToString();
            byte[] jsonDataBytes = System.Text.Encoding.UTF8.GetBytes(jsonDataString);
            
            // 调用 C++ 函数进行加法运算
            double resultAdd = Add(3.5, 4.5);
            MessageBox.Show($"Add(3.5, 4.5) = {resultAdd}");

            // 调用 C++ 函数进行乘法运算
            double resultMultiply = Multiply(3.5, 4.5);
            MessageBox.Show($"Multiply(3.5, 4.5) = {resultMultiply}");
            
            // 调用 C++ DLL 函数解析 JSON
            IntPtr resultPtr = ParseJsonAndReturnActions(jsonDataBytes);

            if (resultPtr != IntPtr.Zero)
            {
                return Marshal.PtrToStringAnsi(resultPtr) ?? "解析结果为空";
            }
            else
            {
                return "解析结果为空";
            }
        }
    }

}