using System;
using System.Diagnostics;
using System.Threading.Tasks;
using Windows.Storage;

namespace FoxTube.Services
{
	public static class StorageService
	{
		private static readonly ApplicationDataContainer storage = ApplicationData.Current.RoamingSettings;

		public static StorageFolder Folder => ApplicationData.Current.RoamingFolder;

		public static bool PromptFeedback
		{
			get => GetValue(Uptime.TotalHours > 12);
			set => SetValue(value);
		}

		public static bool PromptReview
		{
			get => GetValue(Uptime.TotalHours > 24);
			set => SetValue(value);
		}

		public static TimeSpan Uptime
		{
			get => GetValue(TimeSpan.FromSeconds(0));
			set => SetValue(value);
		}

		public static DateTime LastInboxCheck
		{
			get => GetValue(DateTime.UtcNow);
			set => SetValue(value);
		}

		public static string LastOpenedVersion
		{
			get => GetValue(null);
			set => SetValue(value);
		}

		public static int? LastUserIndex
		{
			get => GetValue(null);
			set => SetValue(value);
		}

		public static string UserInfos
		{
			get => GetValue(null);
			set => SetValue(value);
		}

		public static async Task ClearStorage()
		{
			storage.Values.Clear();
			foreach (IStorageItem i in await Folder.GetItemsAsync())
				await i.DeleteAsync();
		}

		#region Service methods
		private static dynamic GetValue(object defaultValue)
		{
			string propName = (new StackTrace()).GetFrame(1).GetMethod().Name.Substring(4);
			return storage.Values[$"Storage.{propName}"] ?? defaultValue;
		}

		private static void SetValue(object value)
		{
			string propName = (new StackTrace()).GetFrame(1).GetMethod().Name.Substring(4);
			storage.Values[$"Storage.{propName}"] = value;
		}
		#endregion
	}
}