- name: Check to see if the constraints file exists
  stat:
    path: "{{ tox_constraints_file }}"
    get_checksum: false
    get_mime: false
    get_md5: false
  register: stat_results
  when: tox_constraints_file is defined

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

- name: Record file location
  set_fact:
    tox_constraints_env:
      TOX_CONSTRAINTS_FILE: "{{ tox_constraints_file }}"
      # Backward compatibility, to be removed
      UPPER_CONSTRAINTS_FILE: "{{ tox_constraints_file }}"
  when: tox_constraints_file is defined

- name: Install tox siblings
  include_tasks: siblings.yaml
  when: tox_install_siblings

- name: Emit tox command
  debug:
    msg: >-
      {{ tox_executable }}
      {% if tox_envlist is defined and tox_envlist %}
      -e{{ tox_envlist }}
      {% endif %}
      {{ tox_extra_args }}

- block:
    - name: Run tox
      args:
        chdir: "{{ zuul_work_dir }}"
      environment: "{{ tox_environment|combine(tox_constraints_env|default({})) }}"
      command: >-
        {{ tox_executable }}
        {% if tox_envlist is defined and tox_envlist %}
        -e{{ tox_envlist }}
        {% endif %}
        {{ tox_extra_args }}
      register: tox_output

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

    - name: Return file comments to Zuul
      when:
        - tox_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