matrix-docker-ansible-deploy/roles/custom/matrix-bot-mjolnir/tasks/validate_config.yml

---

- name: Fail if required matrix-bot-mjolnir variables are undefined
  ansible.builtin.fail:
    msg: "The `{{ item.name }}` variable must be defined and have a non-null value."
  with_items:
    - {'name': 'matrix_bot_mjolnir_access_token', when: "{{ not matrix_bot_mjolnir_pantalaimon_use }}"}
    - {'name': 'matrix_bot_mjolnir_management_room', when: true}
    - {'name': 'matrix_bot_mjolnir_container_network', when: true}
    - {'name': 'matrix_bot_mjolnir_homeserver_url', when: true}
    - {'name': 'matrix_bot_mjolnir_raw_homeserver_url', when: true}
    - {'name': 'matrix_bot_mjolnir_pantalaimon_username', when: "{{ matrix_bot_mjolnir_pantalaimon_use }}"}
    - {'name': 'matrix_bot_mjolnir_pantalaimon_password', when: "{{ matrix_bot_mjolnir_pantalaimon_use }}"}
  when: "item.when | bool and (vars[item.name] == '' or vars[item.name] is none)"

- name: Fail if inappropriate variables are defined
  ansible.builtin.fail:
    msg: "The `{{ item.name }}` variable must be undefined or have a null value."
  with_items:
    - {'name': 'matrix_bot_mjolnir_access_token', when: "{{ matrix_bot_mjolnir_pantalaimon_use }}"}
  when: "item.when | bool and not (vars[item.name] == '' or vars[item.name] is none)"