add support for username authentication

lib/entendu_web/controllers/auth_controller.ex

@@ -29,7 +29,7 @@ defmodule EntenduWeb.AuthController do
 
     with %{id: link_id, recipient: recipient} <- link,
          {:ok, user} <- UserFromAuth.find_or_create(auth),
-         true <- UserFromAuth.can_access?(recipient, user.emails) do
+         true <- UserFromAuth.can_access?(recipient, user) do
       # TODO: send over encrypted data that the frontend can decrypt
 
       conn

lib/entendu_web/controllers/link_controller.ex

@@ -55,7 +55,7 @@ defmodule EntenduWeb.LinkController do
   def text(conn, %{"id" => link_id}) do
     with user = get_session(conn, :current_user),
          %Link{recipient: recipient} = link <- Links.get_link(link_id),
-         true <- UserFromAuth.can_access?(recipient, user.emails) do
+         true <- UserFromAuth.can_access?(recipient, user) do
       path = EncryptedLink.url({link.text_content, link})
       send_file(conn, 200, path)
     end
@@ -64,7 +64,7 @@ defmodule EntenduWeb.LinkController do
   def file(conn, %{"id" => link_id}) do
     with user = get_session(conn, :current_user),
          %Link{recipient: recipient} = link <- Links.get_link(link_id),
-         true <- UserFromAuth.can_access?(recipient, user.emails) do
+         true <- UserFromAuth.can_access?(recipient, user) do
       path = EncryptedLink.url({link.file_content, link})
       send_file(conn, 200, path)
     end