Add video & photo publishing

[tfinnell]

Provides the functionality that was requested in issue #28

Videos are handled on a separate subdomain than the standard graph api.

Passing the proper tuples to hackney was the only difficult part about this, but the HTTPoison codebase & documentation helped a bit here. While I was digging in I noticed there's quite a bit of overlapping functionality between HTTPoison and Graph. What are your thoughts on replacing the request/method functions with a dependancy or two?

Wasn't sure if we wanted to add static assets to the project to get the tests to pass, my solution was just to use environment variables [FBEX_PHOTO_FILE, FBEX_VIDEO_FILE] for now so be sure you've got those loaded before running mix test.

[mweibel]

While I was digging in I noticed there's quite a bit of overlapping functionality between HTTPoison and Graph. What are your thoughts on replacing the request/method functions with a dependancy or two?

I'm totally up for that!

Wasn't sure if we wanted to add static assets to the project to get the tests to pass, my solution was just to use environment variables [FBEX_PHOTO_FILE, FBEX_VIDEO_FILE] for now so be sure you've got those loaded before running mix test.

Yeah I guess we'd need those in a test folder because Travis CI will need them too. Is this just the path to such a file?

[tfinnell]

Great, since you're open, I'll make a proposal that introduces HTTPoison in another issue/PR.

Yup, just a path to the media files to be published. I removed the environment variables and just reference the sample files which are now located in test/assets.

[mweibel]

This looks good, will test it on my own and see why travis failed later on. Sorry for the delay in reviewing

[mweibel]

I'm unsure about the graph-video.facebook.com URL because of the following:

• when I try running the test I always get a timeout
• it's missing the graph API version which I assume should be there too (according to Uploading Videos Documentation)
• if I switch to the normal graph API it works, no timeout occurs (docs)

Could it be that the graph-video.facebook.com URL is only for resumable uploads and we'd need to first start the transfer, then another request for uploading and finally one to finish the transfer if we'd want to use that URL?

[tfinnell]

graph-video.facebook.com will accept a non-resumable file upload if it's posted as form-data it seems. My comments incorrectly documented that data-structure, I believe. Sorry about that! I simplified the publish inputs for images/videos to receive the file path directly and create the form structure internally.

[mweibel]

Thanks! Version 0.15.0 has been published on hex.
I invited you to become a collaborator as you've added non significant changes :)

Keep up the good work 👍