[STORY] As a host, I want CBA Media URLs automatically resolve to the actual media file, when pasting into the import dialog

Parent: [Epic] CBA Media URL Resolver (aura#440 - closed)

The details below are not updated in a while, check the parent ticket for recent info.

The dialog should

• detect any CBA Media URL (e.g. ttps://cba.fro.at/623445)
• check against the CBA API
• use the actual CBA Media File URL

The logic is similar to what is done in the Play Web Components.

CBA API Request

You need

• CBA API Key: The play repo holds an demo key, which can be used for dev-purposes
• CBA Media ID: Extract that from the original URL
• CBA Allowed URLs: A list of CBA Domains which should be resolved (typicially: https://cba.fro.at/, https://cba.media/, https://cba.yourradio.name). They can be stored in a textfield, next to the Radio Settings in Dashboard.

After that doing a fetch to https://cba.fro.at/wp-json/wp/v2/media?api_key=%API_KEY%&parent=%MEDIA_ID% returns an object holding the URL to the audio file:

{
  ...
  source_url: "https://cba.fro.at/wp-content/uploads/9/5/0010587619/audio-filename.mp3"
}

Dependencies

• Provide API endpoint to query CBA media details (steering#216 - moved)