/// <summary>
/// Retrieves image as byte array by its id.
/// </summary>
/// <param name="id">The ID of the media library element.</param>
/// <param name="imageId">The ID of the image.</param>
/// <returns></returns>
public async Task <byte[]> GetImage(string id, string imageId, ImageTypeEnum imageType)
{
if (string.IsNullOrEmpty(id))
{
return(null);
}
if (string.IsNullOrEmpty(imageId))
{
return(null);
}
ImageCacheItem cacheItem = new ImageCacheItem
{
Id = imageId,
ImageType = imageType.ToString(),
MediaElementId = id
};
if (isCacheEnabled)
{
ImageCacheItem retrievedItem = await _localCacheService.Get <ImageCacheItem>(cacheItem.GetFileName());
if (retrievedItem != null)
{
return(retrievedItem.Image);
}
}
string imageEndpoint = string.Format(GetImageEndpoint, id, imageType, imageId);
using (HttpClient cli = new HttpClient())
{
cli.AddAuthorizationHeaders();
HttpResponseMessage result = await cli.GetAsync(imageEndpoint);
byte[] retrievedImage = await result.Content.ReadAsByteArrayAsync();
if (isCacheEnabled)
{
cacheItem.Image = retrievedImage;
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
_localCacheService.Set(cacheItem.GetFileName(), cacheItem);
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}
return(retrievedImage);
}
}
