Hi Jannis,

The uploaded file details are currently stored in a system collection that is not exposed to users. You can however build a custom runtime collection to keep a record of these files yourself. You can do this by placing the the following code in Cloud Code>User>UploadCompletedMessage.

//grab the uploaded files details from the message
var dataToGrab = Spark.getData().uploadData;

//load our collection
var uploadedFiles = Spark.runtimeCollection("uploadedFiles");

//insert the data into our custom runtime collection
var success = uploadedFiles.insert({"uploadedData":dataToGrab})

With this you will end up with a mirrored collection containing a document each uploaded file.

//example document

{
 "_id": {
  "$oid": "57972176132aeb049cd83b1f"
 },
 "uploadedData": {
  "fileName": "585f354bcfd0436ab856fafbb2011bbb-2016-07-22_15h14_02.png",
  "uploadId": "585f354bcfd0436ab856fafbb2011bbb",
  "fileSize": 231352,
  "myKey": "myValue",
  "origFileName": "2016-07-22_15h14_02.png",
  "playerId": "578559cb92c95a70de956829"
 }
}

Just remember that if you use the "deleteUploadedFile" call from SparkFiles to remove an uploaded file, remember to remove the corresponding document from your custom collection while you are doing it, this will keep the collection up to date. If you have any further questions just let me know.

Thanks,

Liam