using System.IO;

using Microsoft.Extensions.Configuration;

using Python.Runtime;

namespace Matplotlib.Net;

public static class Pythonnet

{

public static IConfiguration Config { get; private set; }

public static void Init()

{

Config = new ConfigurationBuilder().AddJsonFile("appsettings.json").Build();

var pathToVirtualEnv = Config.GetSection("Python")["PythonHome"];

var currDir = Directory.GetCurrentDirectory();

var path = Environment.GetEnvironmentVariable("PATH").TrimEnd(';');

path = string.IsNullOrEmpty(path) ? pathToVirtualEnv : path + ";" + pathToVirtualEnv;

Environment.SetEnvironmentVariable("PATH", path, EnvironmentVariableTarget.Process);

Environment.SetEnvironmentVariable("PATH", pathToVirtualEnv, EnvironmentVariableTarget.Process);

Environment.SetEnvironmentVariable("PYTHONHOME", pathToVirtualEnv, EnvironmentVariableTarget.Process);

Environment.SetEnvironmentVariable("PYTHONPATH", $"{pathToVirtualEnv}\\Lib\\site-packages;{pathToVirtualEnv}\\Lib;{pathToVirtualEnv}\\DLLs;{currDir}", EnvironmentVariableTarget.Process);

Runtime.PythonDLL = $"{pathToVirtualEnv}/python{Config.GetSection("Python")["PythonVersion"]}.dll";

PythonEngine.PythonHome = pathToVirtualEnv;

PythonEngine.PythonPath = Environment.GetEnvironmentVariable("PYTHONPATH", EnvironmentVariableTarget.Process);

PythonEngine.Initialize();

PythonEngine.BeginAllowThreads();

}

}