- name: Read Docker config
  block:
    - name: Read daemon.json
      become: true
      ansible.builtin.slurp:
        src: /etc/docker/daemon.json
      register: docker_current_config

    - name: Parse daemon.json
      ansible.builtin.set_fact:
        docker_current_config: '{{ docker_current_config.content | b64decode | from_json }}'
  rescue:
    - name: daemon.json is missing
      ansible.builtin.set_fact:
        docker_current_config: {}

- name: Modify Docker config
  become: true
  block:
    - name: Create /etc/docker
      ansible.builtin.file:
        path: /etc/docker
        state: directory
        owner: root
        group: root
        mode: '755'

    - name: Write daemon.json
      ansible.builtin.copy:
        dest: /etc/docker/daemon.json
        content: '{{ docker_current_config | combine({"log-driver": docker_logging_driver}) | to_nice_json }}'
        owner: root
        group: root
        mode: '644'
      register: docker_config

- name: Restart Docker if necessary
  become: true
  when: docker_config.changed
  block:
    - name: Collect service facts
      ansible.builtin.service_facts:

    - name: Restart Docker service
      when: |
        'docker.service' in ansible_facts.services and ansible_facts.services['docker.service'].state == 'running'
      ansible.builtin.systemd_service:
        name: docker
        state: restarted