async Task DownloadImagesAsync(IEnumerable <IEntityWithImage> entities, string folder)
{
var imagesFolder = Path.Combine(options.CurrentValue.ImagesOutDir, folder);
Directory.CreateDirectory(imagesFolder);
await Task.WhenAll(entities.Select(TryDownloadImagesAsync));
async Task TryDownloadImagesAsync(IEntityWithImage entity)
{
try
{
await repository.DownloadImageAsync(
entity,
() => CreateImageFile(entity),
applicationHostLifetime.ApplicationStopping);
logger.LogInformation("{Type} image found for : {Id}", entity.GetType().Name, entity.Id);
}
catch (Exception exception)
{
logger.LogError(exception, "Failed loading {Type} image of {Id}", entity.GetType().Name, entity.Id);
}
}
Task <Stream> CreateImageFile(IEntityWithImage entity)
{
Stream ouputStream = new FileStream(
Path.Combine(imagesFolder, entity.Id + ".jpg"),
FileMode.Create,
FileAccess.Write);
return(Task.FromResult(ouputStream));
}
}
