Help needed to construct a cvs list of values from a dictionary

[The Gripmaster]

I have a dictionary like this

customers:
  abc:
    id: 1
    status: active
  def:
    id: 2
    status: inactive
  ghi:
    id: 3
    status: active
  jkl:
    id: 4
    status: active

What's the easiest (Ansible) way to construct a string like below assigned to a variable of the active customers only?

abc,ghi,jkl