matrix-docker-ansible-deploy/roles/matrix-registration/tasks/validate_config.yml

---

- name: Fail if required matrix-registration settings not defined
  fail:
    msg: >
      You need to define a required configuration setting (`{{ item }}`) for using matrix-registration.      
  when: "vars[item] == ''"
  with_items:
    - "matrix_registration_shared_secret"
    - "matrix_registration_admin_secret"
    - "matrix_registration_server_location"

- name: (Deprecation) Catch and report renamed settings
  fail:
    msg: >-
      Your configuration contains a variable, which now has a different name.
      Please change your configuration to rename the variable (`{{ item.old }}` -> `{{ item.new }}`).      
  when: "item.old in vars"
  with_items:
    - {'old': 'matrix_registration_docker_repo', 'new': 'matrix_registration_container_image_self_build_repo'}