- name: Check to see if the constraints file exists
  stat:
    path: "{{ nox_constraints_file }}"
    get_checksum: false
    get_mime: false
  register: stat_results
  when: nox_constraints_file is defined

- name: Fail if constraints file is missing
  when: nox_constraints_file is defined and not stat_results.stat.exists
  fail:
    msg: nox_constraints_file is defined but was not found

- name: Record constraints file location
  set_fact:
    nox_constraints_env:
      NOX_CONSTRAINTS_FILE: "{{ nox_constraints_file }}"
  when: nox_constraints_file is defined

- name: Install nox siblings
  include_tasks: siblings.yaml
  when: nox_install_siblings

- name: Emit nox command
  debug:
    msg: >-
      {{ nox_executable }}
      {% if nox_config_file is defined and nox_config_file %}
      -f {{ nox_config_file }}
      {% endif %}
      {% if nox_session is defined and nox_session %}
      -s {{ nox_session }}
      {% endif %}
      {% if nox_keyword is defined and nox_keyword %}
      -k {{ nox_keyword }}
      {% endif %}
      {% if nox_tag is defined and nox_tag %}
      -t {{ nox_tag }}
      {% endif %}
      {% if nox_force_python is defined and nox_force_python %}
      --force-python {{ nox_force_python }}
      {% endif %}
      {% if nox_install_siblings %}
      --reuse-existing-virtualenvs --no-install
      {% endif %}
      {{ nox_extra_args }}

- name: Run nox
  block:
    - name: Run nox
      args:
        chdir: "{{ zuul_work_dir }}"
      environment: "{{ nox_environment | combine(nox_constraints_env | default({})) }}"
      command: >-
        {{ nox_executable }}
        {% if nox_config_file is defined and nox_config_file %}
        -f {{ nox_config_file }}
        {% endif %}
        {% if nox_session is defined and nox_session %}
        -s {{ nox_session }}
        {% endif %}
        {% if nox_keyword is defined and nox_keyword %}
        -k {{ nox_keyword }}
        {% endif %}
        {% if nox_tag is defined and nox_tag %}
        -t {{ nox_tag }}
        {% endif %}
        {% if nox_force_python is defined and nox_force_python %}
        --force-python {{ nox_force_python }}
        {% endif %}
        {% if nox_install_siblings %}
        --reuse-existing-virtualenvs --no-install
        {% endif %}
        {{ nox_extra_args }}
      register: nox_output

  # Even though any test environment in nox failed we want to
  # return file comments produced so always run this.
  always:
    - name: Look for output
      tox_parse_output:
        tox_output: '{{ nox_output.stdout }}'
        tox_envlist: '{{ nox_session | default(nox_keyword) | default(nox_tag) }}'
        workdir: '{{ zuul_work_dir }}'
      when: nox_inline_comments
      register: file_comments
      failed_when: false

    - name: Return file comments to Zuul
      when:
        - nox_inline_comments
        - file_comments.file_comments is defined
        - file_comments.file_comments
      delegate_to: localhost
      zuul_return:
        data:
          zuul:
            file_comments: '{{ file_comments.file_comments }}'
      failed_when: false