---
- name: "Checking for x86_64"
  ansible.builtin.set_fact:
    host_arch: "amd64"
  when: "'x86_64' in ansible_architecture"

- name: "Checking for aarch64"
  ansible.builtin.set_fact:
    host_arch: "arm64"
  when: "'aarch64' in ansible_architecture"

- name: "Checking for Centos docker version"
  ansible.builtin.set_fact:
    docker_ce_name: 'docker-ce-{{ centos_docker_version }}'
  when:
    - ansible_os_family == 'RedHat'
    - centos_docker_version != 'latest'

- name: "Checking for Ubuntu docker version"
  ansible.builtin.set_fact:
    docker_ce_name: 'docker-ce={{ ubuntu_docker_version }}'
  when:
    - ansible_distribution == 'Ubuntu'
    - ubuntu_docker_version != 'latest'

- name: Install Docker (RedHat 7)
  become: true
  when: ansible_os_family == 'RedHat' and ansible_distribution_major_version == "7"
  block:
    - name: Install Docker requirements
      ansible.builtin.yum:
        name:
          - device-mapper-persistent-data
          - lvm2
        state: present
    - name: Add Docker repository
      ansible.builtin.get_url:
        url: https://download.docker.com/linux/centos/docker-ce.repo
        dest: /etc/yum.repos.d/docker-ce.repo
        mode: 0644
    - name: Install Docker CE
      ansible.builtin.yum:
        name: '{{ docker_ce_name }}'
        state: present
        update_cache: true

- name: Install Docker (RedHat 8)
  become: true
  when: ansible_os_family == 'RedHat' and ansible_distribution_major_version >= "8"
  block:
    - name: Remove confliting packages with Docker-ce
      ansible.builtin.yum:
        name:
          - atomic-registries
          - buildah
          - containers-common
          - container-tools
          - docker
          - podman
          - runc
          - skopeo
        state: absent
        update_cache: true
    - name: Add Docker repository
      ansible.builtin.get_url:
        url: https://download.docker.com/linux/centos/docker-ce.repo
        dest: /etc/yum.repos.d/docker-ce.repo
        mode: 0644
    - name: Install Docker requirements
      ansible.builtin.yum:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin
        state: present
        update_cache: true

- name: Install Docker (Ubuntu)
  become: true
  when: ansible_distribution == 'Ubuntu'
  block:
    - name: Install Docker requirements
      ansible.builtin.package:
        name:
          - apt-transport-https
          - ca-certificates
          - gnupg
        state: present
        update_cache: true
    - name: Add Docker apt-key
      ansible.builtin.apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        state: present
    - name: Add Docker apt-repository
      ansible.builtin.apt_repository:
        repo: 'deb [arch={{ host_arch }}] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} {{ docker_repo_channel }}'
        state: present
    - name: Install Docker CE
      ansible.builtin.package:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin
        state: present
        update_cache: true

- name: Copy LF Docker configuration
  become: true
  block:
    - name: Ensure /etc/docker directory exists
      ansible.builtin.file:
        path: /etc/docker
        state: directory
        mode: 0700
    - name: Copy LF Docker configuration
      ansible.builtin.copy:
        src: daemon.json
        dest: /etc/docker/daemon.json
        owner: root
        group: root
        mode: 0600
    - name: 'Set mtu to {{ mtu }}'
      ansible.builtin.lineinfile:
        path: /etc/docker/daemon.json
        regexp: '^  "mtu":'
        line: '  "mtu": {{ mtu }},'

# There is a known bug with using a daemon.json file and passing the default
# cli options to the daemon. We must replace the ExecStart command with one
# that does not have any options.
- name: Fix broken systemd file on Ubuntu
  ansible.builtin.lineinfile:
    path: /lib/systemd/system/docker.service
    regexp: '^ExecStart='
    line: 'ExecStart=/usr/bin/dockerd'
  when: ansible_distribution == 'Ubuntu'
  become: true

- name: Fix broken systemd file on Red Hat
  ansible.builtin.lineinfile:
    path: /usr/lib/systemd/system/docker.service
    regexp: '^ExecStart='
    line: 'ExecStart=/usr/bin/dockerd'
  when: ansible_os_family == 'RedHat'
  become: true

- name: Enable Docker service
  ansible.builtin.systemd:  # noqa ignore-errors
    name: docker
    enabled: true
  ignore_errors: true
  when: ansible_os_family == 'RedHat'
  become: true