---
- name: Debug distribution information
  debug:
    msg: 
      - "Distribution: {{ ansible_facts['distribution'] }}"
      - "Distribution Release: {{ ansible_facts['distribution_release'] }}"
      - "Distribution Version: {{ ansible_facts['distribution_version'] }}"
      - "OS Family: {{ ansible_facts['os_family'] }}"
  when: ansible_debug_output | default(false) | bool

- name: Check if Docker is already installed
  command: docker --version
  register: docker_check
  ignore_errors: true
  changed_when: false
  failed_when: false
  no_log: true

- name: Check if Docker packages are installed via apt
  package_facts:
    manager: apt
  register: docker_apt_check
  changed_when: false

- name: Set installation condition
  set_fact:
    docker_needs_install: "{{ docker_check.rc != 0 or 'docker-ce' not in ansible_facts.packages }}"

- name: Docker installation tasks
  block:
    - name: Install Docker requirements
      apt:
        name:
          - apt-transport-https
          - ca-certificates
          - curl
          - gnupg
          - lsb-release
        state: present

    - name: Remove old Docker repository files
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - /etc/apt/sources.list.d/docker.list
        - /etc/apt/sources.list.d/docker-ce.list

    - name: Create keyrings directory
      file:
        path: /etc/apt/keyrings
        state: directory
        mode: '0755'

    - name: Setup Docker GPG key
      include_tasks: setup_gpg_key.yml

    - name: Setup Docker repository
      include_tasks: "setup_repo_{{ ansible_facts['distribution'] | lower | replace(' ', '_') }}.yml"

    - name: Install Docker CE
      apt:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin
        state: present

    - name: Start and enable Docker service
      systemd:
        name: docker
        state: started
        enabled: yes

    - name: Set target user variable
      set_fact:
        target_user: "{{ ansible_user | default(ansible_user_id) }}"

    - name: Add user to docker group
      user:
        name: "{{ target_user }}"
        groups: docker
        append: yes

  when: docker_needs_install

- name: Display Docker status
  debug:
    msg: 
      - "Docker already installed: {{ docker_check.stdout if docker_check.rc == 0 else 'Not found' }}"
      - "Docker CE package installed: {{ 'Yes' if 'docker-ce' in ansible_facts.packages else 'No' }}"
      - "Actions taken: {{ 'None - Docker already present' if not docker_needs_install else 'Docker installation/configuration performed' }}"
  when: ansible_debug_output | default(false) | bool