using FoxTube.Models.Collections;
using FoxTube.Utils;
using System;
using System.Net.Http;
using System.Threading.Tasks;
using Windows.UI.Notifications;
using Google.Apis.Blogger.v3;
using Google.Apis.Blogger.v3.Data;
using System.Linq;
using System.Globalization;
using Windows.Foundation.Metadata;

namespace FoxTube.Services
{
	public static class InboxService
	{
		public static BloggerService Service { get; } = new BloggerService(new Google.Apis.Services.BaseClientService.Initializer
		{
			ApplicationName = "FoxTube",
			ApiKey = SecretConstants.BloggerApiKey
		});

		private static readonly HttpClient client = new HttpClient();

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

		public static async Task PushNew()
		{
			try
			{
				PostsResource.ListRequest request = Service.Posts.List(SecretConstants.BlogId);
				request.FetchImages = false;
				request.Labels = "FoxTube";
				request.MaxResults = 500;
				request.StartDate = StorageService.LastInboxCheck.ToString("yyyy-MM-dd'T'HH:mm:ss.fffK", DateTimeFormatInfo.InvariantInfo);
				request.OrderBy = PostsResource.ListRequest.OrderByEnum.UPDATED;

				PostList response = await request.ExecuteAsync();

				foreach(Post post in response.Items.Where(i => !i.Labels.Contains("Changelog")))
					ToastNotificationManager.CreateToastNotifier().Show(ToastTemplates.GetBlogpostToast(post));

				StorageService.LastInboxCheck = DateTime.UtcNow;
			}
			catch (Exception e)
			{
				Metrics.SendReport(new Exception("Unable to retrieve toast notifications", e));
			}
		}

		// TODO: Add changelog retrieval
		/// <summary>
		/// Fires toast notification with the last changelog content
		/// </summary>
		[Deprecated("In future versions it will be replaced with splash screen full size message", DeprecationType.Deprecate, 1)]
		public static async void PushChangelog()
		{
			try
			{
				if (string.IsNullOrWhiteSpace(StorageService.LastOpenedVersion))
					StorageService.LastOpenedVersion = Metrics.CurrentVersion;

				string lastVersion = StorageService.LastOpenedVersion;
				if (string.IsNullOrWhiteSpace(lastVersion) || lastVersion == Metrics.CurrentVersion)
					return;

				PostsResource.ListRequest request = Service.Posts.List(SecretConstants.BlogId);
				request.FetchImages = false;
				request.Labels = $"FoxTube,Changelog,v{Metrics.CurrentVersion}";
				request.MaxResults = 1;

				PostList response = await request.ExecuteAsync();

				if (response.Items.Count > 0)
					ToastNotificationManager.CreateToastNotifier().Show(ToastTemplates.GetBlogpostToast(response.Items.First()));

				StorageService.LastOpenedVersion = Metrics.CurrentVersion;
			}
			catch (Exception e)
			{
				Metrics.SendReport(new Exception("Unable to retrieve changelog", e));
			}
		}
	}
}