---
# 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
        register: docker_install
        failed_when: docker_install.rc > 0
        changed_when: docker_install.rc == 0
        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
        register: docker_open_app
        failed_when: docker_open_app.rc > 0
        changed_when: docker_open_app.rc == 0
        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