services/roles/hedgedoc/tasks/check.yml

---
- name: Check for valid state
  ansible.builtin.fail:
    msg: >-2
      Unsupported state '{{ hedgedoc_state }}'. Supported
      states are {{ hedgedoc_states | join(', ') }}.
  when: hedgedoc_state not in hedgedoc_states

- name: Check for valid deployment method
  ansible.builtin.fail:
    msg: >-2
      Deployment method '{{ hedgedoc_deployment_method }}'
      is not supported. Supported are:
      {{ hedgedoc_deployment_methods | join(', ') }}
  when: hedgedoc_deployment_method not in hedgedoc_deployment_methods

- name: Ensure required variables are given
  ansible.builtin.fail:
    msg: "Required variable '{{ item }}' is undefined!"
  loop: "{{ hedgedoc_required_arguments }}"
  when: >-2
    item not in hostvars[inventory_hostname]
    or hostvars[inventory_hostname][item] | length == 0