public bool IsEquivalentTo(ItunesItem item)
{
if (item.Id == null)
{
return(Date == item.PublishDate);
}
return(Id == item.Id);
}
/// <summary>
/// Generate the feed object.
/// </summary>
/// <returns></returns>
public SyndicationFeed Feed()
{
var items = this.Items();
var feedItems = new List <SyndicationItem>();
var owners = items.Select(i => i.Owner).Distinct();
var authors = Context.Where <UserProfile>(u => owners.Contains(u.UserName));
var userUriFormat = App.Get().Context.AppUrl.ToString() + "{0}";
var feedTitleField = this.FieldRefs.FirstOrDefault(f => !string.IsNullOrEmpty(f.ToFeedItemField) && f.ToFeedItemField.Equals("title"));
var feedDescField = this.FieldRefs.FirstOrDefault(f => !string.IsNullOrEmpty(f.ToFeedItemField) && f.ToFeedItemField.Equals("description"));
var feedThumbField = this.FieldRefs.FirstOrDefault(f => !string.IsNullOrEmpty(f.ToFeedItemField) && f.ToFeedItemField.Equals("image"));
var feedImageField = this.FieldRefs.FirstOrDefault(f => !string.IsNullOrEmpty(f.ToFeedItemField) && f.ToFeedItemField.Equals("thumbnail"));
var feedVideoField = this.FieldRefs.FirstOrDefault(f => !string.IsNullOrEmpty(f.ToFeedItemField) && f.ToFeedItemField.Equals("video"));
var titleFieldName = "title";
var descFieldName = "description";
var thumbFieldName = "";
var videoFieldName = "";
var imageFieldName = "";
if (feedTitleField != null)
{
titleFieldName = feedTitleField.Name;
}
if (feedDescField != null)
{
descFieldName = feedDescField.Name;
}
if (feedThumbField != null)
{
thumbFieldName = feedThumbField.Name;
}
if (feedVideoField != null)
{
videoFieldName = feedThumbField.Name;
}
if (feedImageField != null)
{
imageFieldName = feedThumbField.Name;
}
foreach (var item in items)
{
var title = !item.IsNull(titleFieldName) ? (string)item[titleFieldName] : "";
var desc = !item.IsNull(descFieldName) ? (string)item[descFieldName] : "";
var subTitle = "";
var imgUrl = !item.IsNull(imageFieldName) ? (string)item[imageFieldName] : "";
if (string.IsNullOrEmpty(title))
{
continue;
}
if (!string.IsNullOrEmpty(desc))
{
desc = TextEngine.Text(desc);
if (desc.Length > 300)
{
subTitle = desc.Substring(0, 300) + "...";
}
}
var feedItem = new ItunesItem(title, desc, new Uri(item.UrlComponent), item.ID.ToString(), new DateTimeOffset(item.Published));
if (!object.ReferenceEquals(item.Tags, null) && item.Tags.Length > 0)
{
feedItem.Keywords = string.Join(",", item.Tags);
}
if (!string.IsNullOrEmpty(imgUrl))
{
feedItem.ImageUrl = imgUrl;
}
//feedItem.ElementExtensions.Add(new SyndicationElementExtension(
var cats = item.Categories;
if (cats != null && cats.Length > 0)
{
foreach (var c in cats)
{
feedItem.Categories.Add(new SyndicationCategory(c));
}
}
var owner = authors.FirstOrDefault(a => a.UserName.Equals(item.Owner));
feedItem.Subtitle = subTitle;
feedItem.Author = owner.DisplayName;
feedItem.Authors.Add(new SyndicationPerson(owner.Email, owner.DisplayName, string.Format(userUriFormat, owner.UserName)));
feedItems.Add(feedItem);
}
var feed = new SyndicationFeed(feedItems);
feed.Title = new TextSyndicationContent(this.Title);
feed.Description = new TextSyndicationContent(this.Description);
feed.BaseUri = new Uri(this.Url.Replace("~", App.Get().Context.AppUrl.ToString()));
feed.Generator = "DotNetAge";
feed.Language = this.Parent.Locale;
if (this.Generated.HasValue)
{
feed.LastUpdatedTime = new DateTimeOffset(this.Generated.Value);
}
return(feed);
}
