private IActionResult ReturnThumbnailResult(string f, bool json, ThumbnailSize size)
{
Response.Headers.Add("x-image-size", new StringValues(size.ToString()));
var stream = _thumbnailStorage.ReadStream(ThumbnailNameHelper.Combine(f, size), 50);
var imageFormat = ExtensionRolesHelper.GetImageFormat(stream);
if (imageFormat == ExtensionRolesHelper.ImageFormat.unknown)
{
SetExpiresResponseHeadersToZero();
return(NoContent()); // 204
}
// When using the api to check using javascript
// use the cached version of imageFormat, otherwise you have to check if it deleted
if (json)
{
return(Json("OK"));
}
stream = _thumbnailStorage.ReadStream(
ThumbnailNameHelper.Combine(f, size));
// thumbs are always in jpeg
Response.Headers.Add("x-filename", new StringValues(FilenamesHelper.GetFileName(f + ".jpg")));
return(File(stream, "image/jpeg"));
}
/// <summary>
/// Converts this object to json string
/// </summary>
/// <returns></returns>
public string ToJson()
{
JObject j = new JObject();
j["OutputDir"] = OutPutDir;
j["SourceName"] = SourceName;
j["ThumbnailSize"] = ThumbnailSize.ToString();
j["LogName"] = LogName;
j["Handler"] = Handlers;
j["Students"] = Students;
return(j.ToString());
}
/// <summary>
/// This method returns a thumbnail by size of a specific file by ID
/// </summary>
/// <param name="driveId">The ID of the target drive</param>
/// <param name="fileId">The ID of the target file</param>
/// <param name="size">The size of the target thumbnail</param>
/// <returns>The file thumbnails for the specific file</returns>
public static Thumbnail GetFileThumbnail(String driveId, String fileId, ThumbnailSize size)
{
String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
String.Format("{0}drives/{1}/items/{2}/thumbnails/0/{3}",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
driveId,
fileId,
size.ToString().ToLower()));
var thumbnail = JsonConvert.DeserializeObject <Thumbnail>(jsonResponse);
return(thumbnail);
}
/// <summary>
/// This method returns the thumbnails of a specific file by ID
/// </summary>
/// <param name="driveId">The ID of the target drive</param>
/// <param name="fileId">The ID of the target file</param>
/// <returns>The file thumbnails for the specific file</returns>
public static Stream GetFileThumbnailImage(String driveId, String fileId, ThumbnailSize size)
{
String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
String.Format("{0}drives/{1}/items/{2}/thumbnails/0/{3}",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
driveId,
fileId,
size.ToString().ToLower()));
var thumbnail = JsonConvert.DeserializeObject<Thumbnail>(jsonResponse);
var thumbnailImageStream = MicrosoftGraphHelper.MakeGetRequestForStream(
thumbnail.Url,
"image/jpeg");
return (thumbnailImageStream);
}
public string UrlFor(string url, ThumbnailSize size)
{
Check.Argument.IsNotNullOrEmpty(url, "shortUrl");
return("{0}?devkey={1}&url={2}&size={3}&root=no".FormatWith(settings.Thumbnail.Endpoint, settings.Thumbnail.ApiKey, url, size.ToString().ToLower(Culture.Invariant)));
}