---

- name: Fail if required matrix-bot-draupnir variables are undefined
  ansible.builtin.fail:
    msg: "The `{{ item }}` variable must be defined and have a non-null value."
  with_items:
    - "matrix_appservice_draupnir_for_all_master_control_room_alias"
    - "matrix_bot_draupnir_container_network"
  when: "vars[item] == '' or vars[item] is none"

- name: (Deprecation) Catch and report renamed matrix-appservice-draupnir-for-all settings
  ansible.builtin.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_appservice_draupnir_for_all_docker_image_name_prefix', 'new': 'matrix_appservice_draupnir_for_all_docker_image_registry_prefix'}