[InitializeOnLoad]
public static class AutoImportRequiredPackages
{

    static readonly List<string> requiredPackageList = new List<string>()
    {
        "com.unity.visualeffectgraph@10.2.2",
        "com.unity.render-pipelines.universal@10.2.2",
        "com.unity.inputsystem@1.0.2"
    }; 

    static AutoImportRequiredPackages()
    {
        Process();
    }

    private static async void Process()
    {

        foreach (var requiredPackage in requiredPackageList)
        {
            try
            {
                var installed = await CheckInstalled(requiredPackage);
                if (!installed)
                {
                    var result = await Install(requiredPackage);
                }
            }
            catch (Exception e)
            {
                Debug.LogError("Installation failed: " + requiredPackage + "\n====\n" + e.Message);
            }

        }
    }

    private static async Task<bool> CheckInstalled(string packageName)
    {
        var listRequest = Client.List();

        while (listRequest.Status == StatusCode.InProgress)
        {
            await Task.Delay(100);
        }

        if (listRequest.Status == StatusCode.Success)
        {

            var find = listRequest
                .Result
                .ToList()
                .Any(packageCollection => packageCollection.packageId.StartsWith(packageName));

            if(!find) Debug.Log("<color=yellow>Not installed: " + packageName + "</color>");

            return find;
        }

        throw new Exception(listRequest.Error.message);
    }

    private static async Task<bool> Install(string packageName)
    {
        var addRequest = Client.Add(packageName);

        while (addRequest.Status == StatusCode.InProgress)
        {
            await Task.Delay(100);
        }

        if (addRequest.Status == StatusCode.Success)
        {
            Debug.Log("<color=green>Install completed: " + addRequest.Result.packageId + "</color>");
            return true;
        }

        throw new Exception(addRequest.Error.message);
    }

}