using FoxTube.Models.Collections;
using FoxTube.Utils;
using Newtonsoft.Json;
using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Windows.UI.Notifications;

namespace FoxTube.Services
{
	public static class InboxService
	{
		public const string lastChangelogVersionKey = "Inbox.lastChangelogVersion";
		public const string lastCheckKey = "Inbox.lastChangelogVersion";

		private static readonly HttpClient client = new HttpClient();

		public static InboxCollection GetInboxCollection() =>
			new InboxCollection();

		public static async Task PushNew()
		{
			try
			{
				// TODO: Add backend
				HttpResponseMessage response = await client.GetAsync($"https://xfox111.net/FoxTube/Inbox?" +
					$"toast=true&" +
					$"publishedAfter={Storage.Registry.Values[lastCheckKey]}&" +
					$"lang={Storage.GetValue<string>(Storage.Settings.UILanguage)}&" +
					$"appVersion={Metrics.CurrentVersion}");

				Storage.Registry.Values[lastCheckKey] = DateTime.UtcNow.Ticks;

				if (response.StatusCode == HttpStatusCode.NoContent)
					return;

				string[] toasts = JsonConvert.DeserializeObject<string[]>(await response.Content.ReadAsStringAsync());

				foreach (string toast in toasts)
					ToastNotificationManager.CreateToastNotifier().Show(new ToastNotification(toast.ToXml()));
			}
			catch (Exception e)
			{
				Metrics.SendReport(new Exception("Unable to retrieve toast notifications", e));
			}
		}

		/// <summary>
		/// Fires toast notification with the last changelog content
		/// </summary>
		public static async void PushChangelog()
		{
			try
			{
				// TODO: Add backend
				if ((string)Storage.Registry.Values[lastChangelogVersionKey] == Metrics.CurrentVersion)
					return;

				Storage.Registry.Values[lastChangelogVersionKey] = Metrics.CurrentVersion;

				HttpResponseMessage response = await client.GetAsync($"https://xfox111.net/API/FoxTube/Changelog?" +
					$"lang={Storage.GetValue<string>(Storage.Settings.UILanguage)}&" +
					$"version={Metrics.CurrentVersion}");

				if (response.StatusCode == HttpStatusCode.NoContent)
					return;

				ToastNotificationManager.CreateToastNotifier().Show(new ToastNotification((await response.Content.ReadAsStringAsync()).ToXml()));
			}
			catch (Exception e)
			{
				Metrics.SendReport(new Exception("Unable to retrieve changelog", e));
			}
		}
	}
}