Multiple upload support

[flbulgarelli]

It would be nice that the solution upload support also one the following use cases:

• Directory upload
• Multiple files upload
• A zip file upload

[faloi]

A quick solution for this could be a multiuploader that just concatenates all the files using some kind of separator. For instance:

/**** A.java ****/
public class A {
  private int field;

  public int getField() {
    return this.field;
  }
}

/**** B.java ****/
public class B {
  public String shout(String something) {
    return something.toUpperCase();
  }
}

[flbulgarelli]

Yeah, I was actually thinking the same 😄

[flbulgarelli]

Related to mumuki/mumuki-java-runner#5

[faloi]

Ok. Any suggestions about the separators?

[flbulgarelli]

I'd try to use something that can not lead to ambiguities and that is very unlikely to be entered by a user.

/*@@@ B.java @@@*/

We could use mumukit-directives components to get the proper language-specific comment separator.

"#{open_comment}@@@ #{filename}.#{extension} @@@#{close_comment}

[faloi]

Agree. Should this feature be configurable or automatically available for every exercise with upload editor type?

[flbulgarelli]

I am not sure. I think we could enable this feature to every exercise, not only upload exercises. Or perhaps we could flag some exercises as multi-editable, to enable this behavior. See #711.

This is a rough spec:

1. If the exercise is of type editor, the student can click on a plus sign in the editor in order to create an additional editor. The student should be able to change the editor title. When the student sends a solution with more than one editor, a single content solution is built in laboratory, separated as previously discussed.
2. If the exercise is of type upload, and the uploaded file is a zip file, the file is unzipped and uploaded as a previously discussed. This could be done in the client.

[faloi]

Seems nice, but right now I only have time to develop part 2, the one related to the upload editor; and I really want to use this feature in about a month, on exercises with manual correction.

Can we proceed with that and let the multi-editor discussion for another time?

[flbulgarelli]

Sure!

[faloi]

Great. Do you think the zip file is necessary? Any advantages over a plain old <input type="file" multiple>?

[flbulgarelli]

I think that using a file is easier if you want to provide a small script to upload it automatically to the web, like course does. But your proposal works for me.