---
# TASK DESCRIPTION:
# Installs Docker on specified server

- name: Check if Docker is already present
  ansible.builtin.command:
    cmd: docker --version
  register: docker_command_result
  changed_when: docker_command_result.rc == 1
  failed_when: false

- name: install docker on Debian
  when: ansible_os_family == 'Debian'
  block:
    - name: "Add docker local filesystem storage directory"
      ansible.builtin.file:
        path: "{{ rpi_localfs_service_storage }}"
        mode: 0755
        state: directory

    - name: Download Docker install convenience script
      ansible.builtin.get_url:
        url: "https://get.docker.com/"
        dest: /tmp/get-docker.sh
        mode: 0775
      when: docker_command_result.rc == 1

    - name: Run Docker install convenience script
      ansible.builtin.command: /tmp/get-docker.sh
      environment:
        CHANNEL: stable
      when: docker_command_result.rc == 1

    - name: Make sure Docker CE is the version specified
      ansible.builtin.apt:
        name: "docker-ce"
        state: present
      when: docker_command_result.rc == 1

    - name: Ensure Docker is started
      ansible.builtin.service:
        name: docker
        state: started
        enabled: true

    - name: Ensure docker users are added to the docker group
      become: true
      ansible.builtin.user:
        name: "{{ ansible_user }}"
        groups: docker
        append: true
      when: docker_command_result.rc == 1

- name: install docker on macOS
  when: "'macs' in group_names"
  block:
    - name: "Add docker directory to ~/Library"
      ansible.builtin.file:
        path: "{{ mac_localfs_service_storage }}"
        mode: 0755
        state: directory

    - name: install base homebrew packages
      community.general.homebrew:
        name: docker
        state: present
        update_homebrew: false
        upgrade_all: false
      when: docker_command_result.rc == 1

    - name: open docker application
      ansible.builtin.command:
        cmd: open /Applications/Docker.app
      when: docker_command_result.rc == 1

    - name: Must install Docker manually
      ansible.builtin.debug:
        msg: |
          Docker must be installed manually on MacOS. Log in to mac to install then rerun playbook

          Be certain to configure the following:
            - run on login
            - add '{{ mac_storage_mount_point }}' to mountable file system directories
      when: docker_command_result.rc == 1

    - name: end play
      ansible.builtin.meta: end_play
      when: docker_command_result.rc == 1