Gives the Connections page its data: the signed-in person's accounts on other services.

Agents call those services as the person who connected the account. Implement this behaviour to list, connect and disconnect accounts, then turn the page on in the router:

wardrik_dashboard "/wardrik",
  resolver: {MyAppWeb.WardrikResolver, []},
  settings: [connections: {MyApp.WardrikConnections, []}]

Connections

list/2 returns maps with string keys:

• "provider" - required. The service's name.
• "connected" - true once the account is connected.
• "signing_in" - true while a sign-in is in progress.

Signing in

connect/3 returns {:ok, connecting}, where connecting is a map with "provider" and either "connected" => true or an "authorization":

• %{"url" => url} - the page opens url. The service then shows a code, and the person enters it on the page. The page calls pair/4 with the code.
• %{"url" => url, "code" => code} - the person enters code at url. The page refreshes until the account is connected.