DvConnectionSettings

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Win32;

namespace TrainingTaskThree
{
    public class DvConnectionSettings
    {
        private string ServerName { get; }
        private string BaseName { get; }
        private string UserName { get; }
        private string Password { get; }
        public DvConnectionSettings(string serverName, string baseName, string userName, string password)
        {
            ServerName = FixServerUrl(string.IsNullOrEmpty(serverName) ? GetClientServerUrl() : serverName);
            BaseName = baseName;
            UserName = userName;
            Password = password;
        }

        public DvConnectionSettings()
            : this(GetClientServerUrl(), string.Empty, string.Empty, string.Empty)
        {
        }

        public string ConnectionString =>
            $"ConnectAddress={ServerName}StorageServer/StorageServerService.asmx;BaseName={BaseName};UserName={UserName};Password={Password}";

        private string FixServerUrl(string url)
        {
            if (!url.StartsWith("http://")) url = "http://" + url;
            if (!url.EndsWith("/")) url += "/";
            if (!url.ToLower().EndsWith("docsvision/")) url += "docsvision/";
            return url;
        }

        private static string GetClientServerUrl()
        {
            var name = $"SOFTWARE\\DocsVision\\Platform\\{"5.0"}\\Client";
            var registryKey = Registry.CurrentUser.OpenSubKey(name);
            if (registryKey == null)
            {
                registryKey = Registry.LocalMachine.OpenSubKey(name);
                if (registryKey == null)
                {
                    name = $"SOFTWARE\\Wow6432Node\\DocsVision\\Platform\\{"5.0"}\\Client";
                    registryKey = Registry.CurrentUser.OpenSubKey(name) ?? Registry.LocalMachine.OpenSubKey(name);
                }
            }
            if (registryKey == null) throw new ArgumentException("Server Url settings not found");
            var url = (string)registryKey.GetValue("ServerUrl", string.Empty);
            if (string.IsNullOrEmpty(url)) throw new ArgumentException("Server Url settings not found");
            return url;
        }

    }
}