---
# This commented out code was an attempt to make sure the CentOS extras repo is
# enabled.
# TODO This isn't working. It will create the repo everytime regardless whether
# or not the repo is already enabled. For now we leave it because this repo is
# enabled by defaullt on CentOS 7 & 8
#
# https://docs.docker.com/engine/install/centos/#os-requirements
# Look in /etc/yum.repos.d/ for examples of the fields for a repo. This files
# have variables in their config. To get the values of the variables you can
# run:
# `python -c 'import yum; yb = yum.YumBase(); print(yb.conf.yumvar)'`
# - name: Ensure CentOS extras repo is enbaled for CentOS 7.
#   yum_repository:
#     name: extras
#     description: CentOS-{{ ansible_distribution_major_version }} - Extras
#     enabled: true
#     mirrorlist: "http://mirrorlist.centos.org/?\
#                  release={{ ansible_distribution_major_version }}&\
#                  arch={{ ansible_architecture }}&\
#                  repo=extras&infra=genclo"
#     gpgcheck: true
#   become: true
#   when: >
#       ansible_distribution == "CentOS" and
#       ansible_distribution_major_version == "7"
# - name: Ensure CentOS extras repo is enbaled for CentOS 8.
#   yum_repository:
#     name: extras
#     description: >
#       CentOS Linux {{ ansible_distribution_major_version }} - Extras
#     enabled: true
#     mirrorlist: "http://mirrorlist.centos.org/?\
#                  release={{ ansible_distribution_major_version }}&\
#                  arch={{ ansible_architecture }}&\
#                  repo=extras&infra=genclo"
#     gpgcheck: true
#   become: true
#   when: >
#       ansible_distribution == "CentOS" and
#       ansible_distribution_major_version == "8"

# TODO Add this step.
# https://docs.docker.com/engine/install/centos/#os-requirements

################################################################################
# Uninstall unwanted docker packages.
################################################################################

# This step combines "Uninstall old versions" for RedHat family distros.
# https://docs.docker.com/engine/install/centos/#uninstall-old-versions
# https://docs.docker.com/engine/install/fedora/#uninstall-old-versions
# https://docs.docker.com/engine/install/rhel/#uninstall-old-versions

# We check if a docker repo has alredy been added to yum. If so, then we want to
# skip the removing of the old docker packages to make this script more
# idempotent.
- name: Check if docker repo has alredy been added.
  command: yum repolist  # noqa command-instead-of-module
  changed_when: false
  register: repolist

- name: Uninstall old versions of docker RedHat like distros..
  yum:
    name:
      - docker
      - docker-client
      - docker-client-latest
      - docker-common
      - docker-latest
      - docker-latest-logrotate
      - docker-logrotate
      - docker-selinux
      - docker-engine-selinux
      - docker-engine
      - podman
      - runc
    state: absent
  become: true
  when: "'docker' not in repolist.stdout"

################################################################################
# Install dependencies
################################################################################

# https://docs.docker.com/engine/install/centos/#install-using-the-repository
- name: Install dependencies for yum distros.
  yum:
    name:
      - yum-utils
    state: present
  become: true

################################################################################
# Install docker repo.
################################################################################

# https://docs.docker.com/engine/install/centos/#install-using-the-repository
- name: Add docker yum repo for centos.
  command:
    cmd: "yum-config-manager --add-repo {{ centos_repo_url }}"
    creates: "{{ centos_repo_full_path }}"
  become: true