---
- name: Ensure old versions of Docker are not installed.
  package:
    name: '{{ item }}'
    state: absent
  with_items:
    - docker
    - docker-common
    - docker-engine

- name: Add Docker GPG key.
  rpm_key:
    key: https://download.docker.com/linux/centos/gpg
    state: present
  register: add_repository_key
  ignore_errors: true

- name: Ensure curl is present (on older systems without SNI).
  package: name=curl state=present
  when: add_repository_key|failed

- name: Download GPG key (alternative for older systems without SNI).
  shell: 'curl -sSL https://download.docker.com/linux/ubuntu/gpg -o /tmp/docker-gpg'
  args:
    warn: no
  when: add_repository_key|failed 

- name: Add Docker GPG key (alternative for older systems without SNI).
  shell: 'rpm --import /tmp/docker-gpg'
  args:
    warn: no
  when: add_repository_key|failed

- file:
    path: '/tmp/docker-gpg'
    state: absent

- name: Add Docker repository.
  get_url:
    url: "{{ docker_yum_repo_url }}"
    dest: '/etc/yum.repos.d/docker-{{ docker_edition }}.repo'
    owner: root
    group: root
    mode: 0644
  register: add_repository
  ignore_errors: true

- name: Add Docker repository (on older systems without SNI).
  shell: 'curl -sSL {{ docker_yum_repo_url }} -o /etc/yum.repos.d/docker-{{ docker_edition }}.repo'
  args:
    warn: no
  when: add_repository|failed

- name: Set permission on .repo file (on older systems without SNI).
  file:
    path: '/etc/yum.repos.d/docker-{{ docker_edition }}.repo'
    state: file
    owner: root
    group: root
    mode: 0644
  when: add_repository|failed

- name: Configure Docker Edge repo.
  ini_file:
    dest: '/etc/yum.repos.d/docker-{{ docker_edition }}.repo'
    section: 'docker-{{ docker_edition }}-edge'
    option: enabled
    value: '{{ docker_yum_repo_enable_edge }}'

- name: Configure Docker Test repo.
  ini_file:
    dest: '/etc/yum.repos.d/docker-{{ docker_edition }}.repo'
    section: 'docker-{{ docker_edition }}-test'
    option: enabled
    value: '{{ docker_yum_repo_enable_test }}'