public IEnumerable <MediaItem> GetMediaItems(MediaFolder folder, string[] mediaExtensions)
{
DirectoryInfo dir = new DirectoryInfo(folder.Url);
if (!dir.Exists)
{
throw new InvalidUrlException(folder.Url);
}
List <MediaAnnotation> annotations = LoadAnnotations(folder.Url);
foreach (FileInfo file in dir.GetFiles())
{
if (Array.Exists(mediaExtensions, ext => ext.ToLower() == file.Extension.ToLower()))
{
MediaAnnotation ma = annotations.Find(a => a.MediaName == file.Name);
string ann = ma == null ? null : ma.Annotation;
DateTime ct = ma == null ? file.CreationTime : ma.CreationTime;
MediaItem mediaItem = new MediaItem
{
Name = file.Name,
Url = file.FullName,
Annotation = ann,
CreationTime = ct
};
#if SLOW
System.Threading.Thread.Sleep(100);
#endif
yield return(mediaItem);
}
}
}
private static void MergeAnnotation(List <MediaAnnotation> annotationList, MediaAnnotation annotation)
{
int aIdx = annotationList.FindIndex(a => a.MediaName == annotation.MediaName);
if (aIdx >= 0)
{
annotationList[aIdx] = annotation;
}
else
{
annotationList.Add(annotation);
}
}