Materia Chunk - Notify viewer client when a score has been received

[iturgeon]

Materia's score integration isn't completely implemented yet.

Right now, scores are sent from Materia to Obojobo via an LTI score passback. That passback is validated using oauth and is stored in the event stream. Materia also sends a post message out when a score is achieved. Though the LTI passback should be considered the most authoritative & secure source.

We need a way to capture the verified LTI score and give it to the viewer in the browser. Eventually this will be passed to the question chunk code so that the score can be used for assessment questions.

Sockets might be an option. Perhaps use the postmesage to kick off polling?

[stale[bot]]

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