---

- name: Fail if required variables are undefined
  fail:
    msg: "The `{{ item }}` variable must be defined and have a non-null value"
  with_items:
    - matrix_domain
    - matrix_server_fqn_matrix
    - matrix_server_fqn_element
  when: "item not in vars or vars[item] is none"

- name: Fail if uppercase domain used
  fail:
    msg: "Detected that you're using an uppercase domain name - `{{ item }}`. This will cause trouble. Please use all-lowercase!"
  with_items:
    - "{{ matrix_domain }}"
    - "{{ matrix_server_fqn_matrix }}"
    - "{{ matrix_server_fqn_element }}"
  when: "item != item|lower"

- name: Fail if architecture is set incorrectly
  fail:
    msg: "Detected that variable matrix_architecture {{ matrix_architecture }} appears to be set incorrectly. See docs/alternative-architectures.md. Server appears to be {{ ansible_architecture }}."
  when: (ansible_architecture == "x86_64" and matrix_architecture != "amd64") or
        (ansible_architecture == "aarch64" and matrix_architecture != "arm64") or
        (ansible_architecture.startswith("armv") and matrix_architecture != "arm32")