using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using Windows.ApplicationModel.Background;
using Windows.Storage;
using Windows.UI.Notifications;

namespace FoxTube.Background
{
    public sealed class BackgroundProcessor : IBackgroundTask
    {
        public List<Notification> Notifications = new List<Notification>();

        private DateTime lastCheck;
        private ApplicationDataContainer settings = ApplicationData.Current.LocalSettings;

        BackgroundTaskDeferral def;
        public async void Run(IBackgroundTaskInstance taskInstance)
        {
            XmlDocument doc = new XmlDocument();
            def = taskInstance.GetDeferral();

            if (settings.Values["notificationsHistory"] != null)
                doc.LoadXml(settings.Values["notificationsHistory"] as string);
            else
            {
                doc.AppendChild(doc.CreateXmlDeclaration("1.0", "utf-8", null));
                doc.AppendChild(doc.CreateElement("notifications"));
                settings.Values.Add("notificationsHistory", doc.InnerXml);
            }

            CheckAccount();

            CheckAnnouncements();

            def.Complete();
        }

        void CheckAccount()
        {

        }

        void CheckAnnouncements()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load(XmlReader.Create("http://foxgame.hol.es/ftp.xml"));
            if ((XmlConvert.ToDateTime((doc["posts"].FirstChild as XmlElement).GetAttribute("time"), XmlDateTimeSerializationMode.Utc) - DateTime.UtcNow).TotalSeconds > 0)
                Notifications.Add(new Notification(NotificationType.Internal,
                    doc["posts"].FirstChild["notificationHeader"].InnerText,
                    doc["posts"].FirstChild["content"].InnerText,
                    XmlConvert.ToDateTime((doc["posts"].FirstChild as XmlElement).GetAttribute("time"),
                    XmlDateTimeSerializationMode.Local), (doc["posts"].FirstChild as XmlElement).GetAttribute("image")));
            if ((bool)settings.Values["newmessagesNotification"] == true)
                SendNotification(Notifications.Last());
        }

        void SendNotification(Notification notification)
        {
            ToastNotificationManager.CreateToastNotifier().Show(notification.GetToast(0));
        }
    }
}