using Newtonsoft.Json;
using System.Threading.Tasks;
using System.Net.Http;
using Windows.UI.Xaml.Data;
using FoxTube.Services;
using FoxTube.Utils;

namespace FoxTube.Models.Collections
{
	public class InboxCollection : ViewCollection<InboxItem>
	{
		private int _pageNumber = 0;
		private HttpClient _httpClient = new HttpClient();

		public override async Task<LoadMoreItemsResult> LoadItems()
		{
			// TODO: Add backend
			HttpResponseMessage response = await _httpClient.GetAsync($"https://xfox111.net/API/FoxTube/Inbox?" +
				$"lang={Storage.GetValue<string>(Storage.Settings.UILanguage)}&" +
				$"currentVersion={Metrics.CurrentVersion}&" +
				$"itemsCount={ItemsPerRequest}&" +
				$"iteration={_pageNumber}");

			if (!response.IsSuccessStatusCode || response.StatusCode == System.Net.HttpStatusCode.NoContent)
			{
				HasMoreItems = false;
				return new LoadMoreItemsResult
				{
					Count = 0
				};
			}

			InboxItem[] newItems = JsonConvert.DeserializeObject<InboxItem[]>(await response.Content.ReadAsStringAsync());
			foreach (InboxItem item in newItems)
				Items.Add(item);

			_pageNumber++;

			return new LoadMoreItemsResult
			{
				Count = (uint)newItems.Length
			};
		}
	}
}