Unity code imports packages through package manager

I'm working on a project today , The project depends on many others Package, Other Package Again through tgz Provided by the package , Not put in the central warehouse , If it passes Package Manager The interface import needs to be loaded one by one , Take time and trouble , Then I wrote a script , Click on import package, It will scan Package tgz Catalog , Put all the Package Loading in , This method cannot rely on package relationships , You need to load it yourself several times .

The code is as follows ：

using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEditor.PackageManager;
using UnityEditor.PackageManager.Requests;
using UnityEngine;

namespace XXXX.MetaSpace
{
    internal static class MenuItems
    {
        static AddRequest request;
        static ListRequest listRequest;
        static List<string> packageNames;
        static bool isImporting = false;

        [MenuItem("MetaSpace/Import Package")]
        static void ImportPackages()
        {
            if (isImporting)
            {
                Debug.LogWarning("All packages are being imported.");
                return;
            }

            isImporting = true;
            PackagesOk();
        }

        static List<string> GetLocalPackages()
        {
            List<string> packages = new List<string>();
            string[] allFilePaths = Directory.GetFiles("Packages/com.xxxx.metaspace/Runtime/ThirdParty");
            foreach (var one in allFilePaths)
            {
                if (one.EndsWith("tgz"))
                {
                    string pn = one.Replace("Packages/", "");
                    string packageName = "file:" + pn;
                    Debug.Log("packageName: " + packageName);
                    packages.Add(packageName);
                }
            }

            return packages;
        }

        static void PackagesOk()
        {
            Debug.Log("Start List Packages...");
            listRequest = Client.List(false);
            EditorApplication.update += ListPackages;
        }

        static void StartInstallPackages()
        {
            EditorApplication.update += Progress;
            EditorApplication.update += AddPackage;
        }

        static void AddPackage()
        {
            if (request == null && (packageNames == null || packageNames.Count <= 0))
            {
                EditorApplication.update -= Progress;
                EditorApplication.update -= AddPackage;
                //isImporting = false;
                PackagesOk();

                return;
            }

            if (request == null && packageNames.Count > 0)
            {
                request = Client.Add(packageNames[0]);
                packageNames.RemoveAt(0);
            }
        }

        static void Progress()
        {
            if (request != null && request.IsCompleted)
            {
                if (request.Status == StatusCode.Success)
                    Debug.Log("Installed: " + request.Result.packageId);
                else if (request.Status >= StatusCode.Failure)
                    Debug.Log(request.Error.message);

                request = null;
            }
        }

        static void ListPackages()
        {
            if (listRequest.IsCompleted)
            {
                if (listRequest.Status == StatusCode.Success)
                {
                    List<string> localPackages = GetLocalPackages();
                    packageNames = new List<string>();

                    foreach (var localPackage in localPackages)
                    {
                        string[] splitPaths = localPackage.Split('/');
                        if (splitPaths.Length <= 0)
                            continue;

                        bool isFind = false;
                        foreach (var package in listRequest.Result)
                        {
                            if (package.packageId.Contains(splitPaths[splitPaths.Length - 1]))
                            {
                                isFind = true;
                                break;
                            }
                        }

                        if (!isFind)
                        {
                            Debug.Log($"package: {localPackage} need to install!");
                            packageNames.Add(localPackage);
                        }
                    }

                    if (packageNames.Count > 0)
                        StartInstallPackages();
                    else
                    {
                        Debug.Log("all packages are installed!");
                        isImporting = false;
                    }
                }
                else if (listRequest.Status >= StatusCode.Failure)
                    Debug.Log(listRequest.Error.message);

                EditorApplication.update -= ListPackages;
                listRequest = null;
            }
        }
    }
}