using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;

namespace Tango.FSE.Diagnostics.Project
{
    public class DiagnosticsUserSettingsManager : ExtendedObject
    {
        private static object _syncLock = new object();

        private static DiagnosticsUserSettingsManager _default;
        public static DiagnosticsUserSettingsManager Default
        {
            get
            {
                if (_default == null)
                {
                    _default = new DiagnosticsUserSettingsManager();
                }

                return _default;
            }
        }

        public String FilePath { get; protected set; }

        public DiagnosticsUserSettingsCollection Settings { get; set; }

        private DiagnosticsUserSettingsManager()
        {
            Settings = new DiagnosticsUserSettingsCollection();
            FilePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Twine", "Tango", "Diagnostics", Path.GetFileNameWithoutExtension(AppDomain.CurrentDomain.FriendlyName) + ".User.json");
            Reload();
        }

        public void Reload()
        {
            try
            {
                Settings = DiagnosticsUserSettingsCollection.FromFile(FilePath);
            }
            catch (Exception ex)
            {
                LogManager.Log(ex, "Error loading diagnostics user settings.");
            }

            if (Settings == null)
            {
                Settings = new DiagnosticsUserSettingsCollection();
            }
        }

        public void ClearGhostRecords(List<DiagnosticsConfigurableWidget> widgets)
        {
            Settings.Widgets.RemoveAll(x => !widgets.Exists(y => y.ID == x.WidgetID));
        }

        public void Save()
        {
            lock (_syncLock)
            {
                Directory.CreateDirectory(Path.GetDirectoryName(FilePath));
                Settings.ToFile(FilePath);
            }
        }
    }
}