protected virtual void PopulateOpenGraph(ResultExecutingContext filterContext, IPageViewModel <SitePage> model)
{
var siteUrl = SiteDefinition.Current.SiteUrl.ToString();
siteUrl = siteUrl.TrimEnd('/');
// When in preview mode, this is also run for some of the block, they have no CurrentPage
if (model.CurrentPage == null)
{
return;
}
OpenGraphModel openGraph = new OpenGraphModel();
openGraph.Url = siteUrl + _urlResolver.GetUrl(model.CurrentPage.ContentLink);
openGraph.ContentType = "article";
// The list view model works best
var listItem = model.CurrentPage as IHasListViewContentItem;
if (listItem != null)
{
var listItemModel = listItem.GetListViewContentItem();
openGraph.Description = listItemModel.Intro;
openGraph.Title = listItemModel.Title;
if (listItemModel.ImageUrl != null)
{
openGraph.ImageUrl = siteUrl +
_urlResolver.GetUrl(new UrlBuilder(listItemModel.ImageUrl), ContextMode.Default)
+ "?preset=ogpage";
}
}
else
{
openGraph.Title = model.CurrentPage.MetaTitle;
openGraph.Description = model.CurrentPage.MetaDescription;
// See if there is an image we can use
var imageUrlProp = model.CurrentPage.GetPropertyValue <Url>("ListViewImage");
if (imageUrlProp != null)
{
var imageUrl = _urlResolver.GetUrl(new UrlBuilder(imageUrlProp), ContextMode.Default);
openGraph.ImageUrl = siteUrl + imageUrl + "?preset=ogpage";
}
}
openGraph.Description = HtmlHelpers.ScrubHtml(openGraph.Description);
filterContext.Controller.ViewBag.OpenGraph = openGraph;
}
// GET: /g/<category>/<galleryId>/<name>
public async Task <ActionResult> Details(string categoryName, string galleryId, string name)
{
ViewData["Configuration"] = _configuration;
var decodedCategoryName = Helpers.DecodeParameterFromUrl(categoryName);
var category = Server.Instance.Categories.Categories.SingleOrDefault(c => c.Name.Equals(decodedCategoryName, StringComparison.CurrentCultureIgnoreCase));
if (category == null)
{
return(RedirectToAction("Index"));
}
var gallery = await Server.Instance.Galleries.GetGalleryAsync(category.Id, galleryId);
if (gallery == null)
{
return(RedirectToAction("Index"));
}
var images = Utilities.OrderImages(await Server.Instance.Images.GetGalleryImagesAsync(gallery.Id)).ToList();
ViewData["images"] = images;
if (gallery.CreatedByUserId.HasValue())
{
// migrated galleries won't have a user id
ViewData["user"] = await Server.Instance.Users.GetUserAsync(gallery.CreatedByUserId);
}
ViewData.Model = gallery;
long pixels = 0;
foreach (var image in (List <Image>)ViewData["images"])
{
if (image.Metadata.Width.HasValue && image.Metadata.Height.HasValue)
{
pixels += image.Metadata.Width.Value * image.Metadata.Height.Value;
}
}
var megapixels = Convert.ToInt32(pixels / 1000000);
ViewData["megapixels"] = megapixels;
// build the open-graph model to enable great presentation when pages are indexed/shared
var openGraphModel = new OpenGraphModel {
Title = gallery.Name, Url = Request.GetRawUrl().AbsoluteUri
};
if (images.Count > 0)
{
var image = images.SingleOrDefault(i => i.Position == 0) ?? images[0];
var openGraphImage = new OpenGraphModel.OpenGraphImageModel {
Url = $"{_configuration["BaseUrl"]}diog/{image.Files.OriginalId}"
};
if (image.Metadata.Width.HasValue && image.Metadata.Height.HasValue)
{
int width;
int height;
if (image.Metadata.Width > image.Metadata.Height)
{
width = 2048;
var dHeight = (decimal)image.Metadata.Height / ((decimal)image.Metadata.Width / (decimal)2048);
height = (int)Math.Round(dHeight);
}
else
{
height = 2048;
var dWidth = (decimal)image.Metadata.Width / ((decimal)image.Metadata.Height / (decimal)2048);
width = (int)Math.Round(dWidth);
}
openGraphImage.Width = width;
openGraphImage.Height = height;
openGraphImage.ContentType = OpenGraphModel.OpenGraphImageContentTypes.Jpeg;
}
openGraphModel.Images.Add(openGraphImage);
}
if (!string.IsNullOrEmpty(gallery.Description))
{
openGraphModel.Description = Helpers.GetFirstParagraph(gallery.Description);
}
ViewData["openGraphModel"] = openGraphModel;
return(View());
}
public IViewComponentResult Invoke(OpenGraphModel openGraphModel)
{
return(View(openGraphModel));
}
// GET: /gi/{galleryId}/{imageId}/{name}
public async Task <ActionResult> Details(string galleryId, string imageId, string name)
{
var image = await Server.Instance.Images.GetImageAsync(galleryId, imageId);
if (image == null)
{
return(RedirectToActionPermanent("Index", "Home"));
}
ViewData.Model = image;
ViewData["gallery"] = await Server.Instance.Galleries.GetGalleryAsync(image.GalleryCategoryId, galleryId);
ViewData["category"] = Server.Instance.Categories.Categories.Single(c => c.Id == image.GalleryCategoryId);
ViewData["mapsKey"] = _configuration["Google:MapsApiKey"];
if (User.Identity.IsAuthenticated)
{
ViewData["user"] = await Server.Instance.Users.GetUserAsync(Helpers.GetUserId(User));
}
// work out the previous image in the gallery for navigation purposes
ViewData["previousImage"] = await Server.Instance.Images.GetPreviousImageInGalleryAsync(image);
ViewData["nextImage"] = await Server.Instance.Images.GetNextImageInGalleryAsync(image);
// record the image view if the user hasn't viewed the image before in their current session
var viewedImages = HttpContext.Session.Get <List <string> >("viewedImages") ?? new List <string>();
if (!viewedImages.Contains(image.Id))
{
await Server.Instance.Images.IncreaseImageViewsAsync(galleryId, imageId);
viewedImages.Add(image.Id);
HttpContext.Session.Set("viewedImages", viewedImages);
}
// build the open-graph model to enable great presentation when pages are indexed/shared
var openGraphModel = new OpenGraphModel {
Title = image.Name, Url = Request.GetRawUrl().AbsoluteUri
};
if (!string.IsNullOrEmpty(image.Caption))
{
openGraphModel.Description = Helpers.GetFirstParagraph(image.Caption);
}
var openGraphImage = new OpenGraphModel.OpenGraphImageModel {
Url = $"{_configuration["BaseUrl"]}diog/{image.Files.OriginalId}"
};
if (image.Metadata.Width.HasValue && image.Metadata.Height.HasValue)
{
int width;
int height;
if (image.Metadata.Width > image.Metadata.Height)
{
width = 1200;
var dHeight = (decimal)image.Metadata.Height / ((decimal)image.Metadata.Width / (decimal)1200);
height = (int)Math.Round(dHeight);
}
else
{
height = 1200;
var dWidth = (decimal)image.Metadata.Width / ((decimal)image.Metadata.Height / (decimal)1200);
width = (int)Math.Round(dWidth);
}
openGraphImage.Width = width;
openGraphImage.Height = height;
openGraphImage.ContentType = OpenGraphModel.OpenGraphImageContentTypes.Jpeg;
}
openGraphModel.Images.Add(openGraphImage);
ViewData["openGraphModel"] = openGraphModel;
return(View());
}
