public async Task <FeedItem> RefreshFeedItem(FeedItem feedItem)
{
try
{
if (feedItem != null)
{
//get new episodes from saved URI in feedItem
var doc = await RssFeedHelper.GetXDocFromLinkAsync(feedItem.Link);
//update ImageLink and ImageFileName for FeedItem
var feedItemFromXDoc = FeedItemManager.GetFeedItemFromXDoc(doc, feedItem.Link);
feedItem.ImageLink = feedItemFromXDoc.ImageLink; //new image on FeedItem for new episode
feedItem.ImageFileName = feedItemFromXDoc.ImageFileName;
feedItem.LastCheck = DateTime.Now; //save LastCheck
var result = await DataStore.SaveFeedItemAsync(feedItem);
if (result == 0)
{
Debug.WriteLine("Could Not update FeedItem with new LastCheck date");
}
//get new episodes from saved URI in feedItem
var episodes = RssEpisodeManager.GetRssEpisodesFromXDoc(doc, feedItem.Id.Value);
//save new episodes to database
result = await DataStore.AddEpisodesToFeed(episodes); //returns the number of items added
if (result == 0)
{
Debug.WriteLine("FeedItemManager.RefreshFeedItem Result from AddEpisodesToFeed was 0 ");
}
//check existing episodes for undownloaded images
var existingEpisodes = await DataStore.GetAllEpisodeItemsByFeedIdAsync((int)feedItem.Id);
foreach (var episode in existingEpisodes)
{
if (DownloadService.CanDownloadImage(episode)) //check if image is already downloaded
{
await DownloadService.Instance.DownloadImageAsync(episode); //queue to download
}
}
}
}
catch (Exception ex)
{
//could not refresh item
Debug.WriteLine("FeedItemManager.RefreshFeedItem Error " + ex.Message);
}
return(feedItem);
}
