using System.Text;

using Newtonsoft.Json;

namespace Vbdsm.Settings
{
    public class AppSetting
    {
        public List<ServerSetting> Servers { get; set; } = new List<ServerSetting>();
        public int MaxErrorCount { get; set; } = 10;
        public bool UseInnerTerminal { get; set; } = false;
        public List<TerminalSetting> Terminals { get; set; } = new List<TerminalSetting>();

        private static AppSetting? _instance;
        public static AppSetting Instance => GetInstance();

        private static AppSetting GetInstance()
        {
            if (_instance == null)
            {
                using var fileStream = new FileStream("appsettings.json", FileMode.Open, FileAccess.Read);
                int n = (int)fileStream.Length;
                byte[] bt = new byte[n];
                var read = fileStream.Read(bt, 0, n);
                fileStream.Close();

                string data = Encoding.UTF8.GetString(bt, 0, n);
                _instance = JsonConvert.DeserializeObject<AppSetting>(data) ?? new AppSetting();
            }
            return _instance;
        }
    }
}