using System;
using System.Threading.Tasks;
using Windows.UI.Xaml.Data;
using FoxTube.Services;
using FoxTube.Utils;
using Google.Apis.Blogger.v3;
using Google.Apis.Blogger.v3.Data;

namespace FoxTube.Models.Collections
{
	public class InboxCollection : ViewCollection<Post>
	{
		private string nextPageToken;

		public override async Task<LoadMoreItemsResult> LoadItems()
		{
			try
			{
				PostsResource.ListRequest request = InboxService.Service.Posts.List(SecretConstants.BlogId);
				request.FetchImages = false;
				request.PageToken = nextPageToken;
				request.Labels = "FoxTube";
				request.MaxResults = ItemsPerRequest;
				request.OrderBy = PostsResource.ListRequest.OrderByEnum.UPDATED;

				PostList response = await request.ExecuteAsync();

				foreach (Post post in response.Items)
					Items.Add(post);

				HasMoreItems = !string.IsNullOrWhiteSpace(nextPageToken = response.NextPageToken);

				return new LoadMoreItemsResult
				{
					Count = (uint)response.Items.Count
				};
			}
			catch (Exception e)
			{
				Metrics.SendReport(new Exception("Unable to load inbox", e));
				HasMoreItems = false;
				return new LoadMoreItemsResult
				{
					Count = 0
				};
			}
		}
	}
}