public virtual ActionResult ViewGallery(string folderName)
{
Contract.Requires(!String.IsNullOrEmpty(folderName));
ViewGalleryVM model = this.ImageService.GetGallery(folderName);
return(View(model));
}
/// <summary>
/// Gets the details of a gallery.
/// </summary>
/// <param name="folderName">The name of the folder which contains the gallery.</param>
/// <returns>The details of the specified gallery.</returns>
public ViewGalleryVM GetGallery(string folderName)
{
// Input validation: the folder name must be specified.
if (String.IsNullOrEmpty(folderName))
{
throw new ArgumentNullException("folderName");
}
// Input validation: the folder name must not contain any invalid character.
if (folderName.IndexOfAny(Path.GetInvalidPathChars()) > -1 || folderName.IndexOfAny(Path.GetInvalidFileNameChars()) > -1)
{
throw new ArgumentException("The folder name contains invalid characters!", "folderName");
}
// Get the application relative virtual path of the gallery folder (eg. ~/Photos/First).
string folderVirtualPath = Path.Combine(this.ConfigService.StorageFolderVirtualPath, folderName);
// Get the full physical path of the gallery folder (eg. C:\inetpub\wwwroot\Photos\First).
string folderPhysicalPath = HttpContext.Current.Server.MapPath(folderVirtualPath);
// Integrity check: the folder must exist.
if (!Directory.Exists(folderPhysicalPath))
{
throw new ArgumentException("The specified folder does not exist!", "folderName");
}
// Integrity check: the requested folder must be the direct child of the storage folder.
string storagePhysicalPath = HttpContext.Current.Server.MapPath(this.ConfigService.StorageFolderVirtualPath);
string folderParentPhysicalPath = Directory.GetParent(folderPhysicalPath).FullName;
if (!folderParentPhysicalPath.Equals(storagePhysicalPath, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentOutOfRangeException("folderName", "Invalid folder name!");
}
// Get the names of the image files in the requested folder.
IEnumerable <string> imageFileNames = this.GetImageFiles(folderPhysicalPath);
List <ViewGalleryImageVM> images = new List <ViewGalleryImageVM>();
// Ensure that all image has thumbnails.
foreach (string imageFileName in imageFileNames)
{
string thumbnailFileName = "th_" + imageFileName;
string thumbnailPhysicalPath = Path.Combine(folderPhysicalPath, thumbnailFileName);
// Create the thumbnail if it does not exist.
if (!File.Exists(thumbnailPhysicalPath))
{
string imagePhysicalPath = Path.Combine(folderPhysicalPath, imageFileName);
if (ConfigService.AutoGenerateThumbnails)
{
Instructions instructions = new Instructions
{
Width = 80,
Height = 60,
Mode = FitMode.Max
};
ImageJob job = new ImageJob(imagePhysicalPath, thumbnailPhysicalPath, instructions);
try
{
job.Build();
}
catch
{
// In case of any error, use the original image as the thumbnail without resizing it.
thumbnailFileName = imageFileName;
}
}
else
{
thumbnailFileName = imageFileName;
}
}
images.Add(new ViewGalleryImageVM
{
ThumbnailUrl = Path.Combine(folderVirtualPath, thumbnailFileName),
ImageUrl = Path.Combine(folderVirtualPath, imageFileName)
});
}
// Build the returned model.
ViewGalleryVM model = new ViewGalleryVM
{
Title = folderName,
Images = images
};
return(model);
}
