Preview and Publish States of Media Atoms

##Preview and Publish States of Media Atoms

###Atom in a preview state:

• These changes will only be saved in the preview dynamo table and preview capi. The atom cannot be used in composer.
• Because the atom is not yet in a usable states, any assets that it has will be marked as private. When CDS uploads a new asset to a media-atom, the asset is initially private. The user has to review the atom and the asset to make sure that they are happy with the atom before the video is not marked as private on youtube.
• There should be a workaround for this in the alternative publishing route to deal with the fact that someone might want to create an atom for a video that is already in use. We might want to allow people to create an already published video atom from a youtube video.

###Publishing:

• Pressing the publish button publishes the atom to live capi and publishes relevant changes to youtube.
• The only other action which can modify a published atom is setting its expiry date. This can set the status of a published atom to private once the expiry date is reached.
• Publishing preflight checks: when an atom is published, its status is set from private either to public or unlisted.

###Active Assets and Publishing

• When an asset is marked as active, the active asset of the preview version of the atom gets changed. No changes are pushed up to youtube at this point.
• When the user publishes the atom, all the non-active assets the atom has will be marked as private. The metadata of the preview atom will be applied to the video that is now the active asset of the media atom.