---

- name: Verify that Ansible version is >= 2.4.6
  assert:
    that: "ansible_version.full is version_compare('2.4.6', '>=')"
    msg: >-
      This module requires at least Ansible 2.4.6. The version that comes
      with RHEL and CentOS by default (2.4.2) has a known bug that prevent
      this role from running properly.

- name: Check if jmespath is installed locally
  debug: msg={{ dummy|json_query('@') }}
  register: check_jmespath
  ignore_errors: yes
  vars:
    dummy: Hello World

- name: Check if jinja 2.8 is installed locally
  debug: msg={{ (dummy|selectattr("id", "equalto", "hello")|first)['value'] }}
  vars:
    dummy:
    - id: hello
      value: Hello World
  register: check_jinja28
  ignore_errors: yes

- name: Check if the "do" jinja extension is enabled
  debug: msg={% do {}.update({}) %}{{ success }}
  vars:
    success: 'The do extension is enabled'
  register: check_jinja_do_ext
  ignore_errors: yes

- name: Ensure JMESPath is installed
  assert:
    that:
    - 'check_jmespath is success'
    msg: "The JMESPath library is required by this role. Please install the JMESPath library with 'pip install jmespath'."

- name: Ensure at least Jinja 2.8 is installed
  assert:
    that:
    - 'check_jinja28 is success'
    msg: "At least Jinja v2.8 is required by this role. Please update Jinja with 'pip install -U Jinja2'."

- name: Ensure the "do" extension of Jinja is enabled
  assert:
    that:
    - 'check_jinja_do_ext is success'
    msg: |-
      You need to enable the 'do' extension of Jinja in your ansible.cfg:
      [default]
      jinja2_extensions = jinja2.ext.do