public IObservable <BitmapSource> GetAvatar(IAvatarContainer apiAccount)
{
Guard.ArgumentNotNull(apiAccount, nameof(apiAccount));
if (apiAccount.AvatarUrl == null)
{
return(Observable.Return(DefaultAvatar(apiAccount)));
}
Uri avatarUrl;
Uri.TryCreate(apiAccount.AvatarUrl, UriKind.Absolute, out avatarUrl);
Log.Assert(avatarUrl != null, "Cannot have a null avatar url");
return(imageCache.GetImage(avatarUrl)
.Catch <BitmapSource, Exception>(_ => Observable.Return(DefaultAvatar(apiAccount))));
}
private static void WriteImages(IImageCache cache, IEnumerable <string> keys, ZipArchive archive, IFileSystem fileIO)
{
foreach (var key in keys)
{
var imageEntry = archive.CreateEntry(key);
using (var imageStream = imageEntry.Open())
{
fileIO.WriteBinary(imageStream, cache.GetImage(key));
}
}
}
private static void WriteImages(IImageCache cache, IEnumerable<string> keys, ZipArchive archive, IFileSystem fileIO)
{
foreach (var key in keys)
{
var imageEntry = archive.CreateEntry(key);
using (var imageStream = imageEntry.Open())
{
fileIO.WriteBinary(imageStream, cache.GetImage(key));
}
}
}
public IObservable <BitmapSource> GetImage(Uri url)
{
return(cacheDelegate.GetImage(url));
}
