---
- name: Ensure apt key is not present in trusted.gpg.d
  ansible.builtin.file:
    path: /etc/apt/trusted.gpg.d/docker.asc
    state: absent

- name: Ensure old apt source list is not present in /etc/apt/sources.list.d
  ansible.builtin.file:
    path: "/etc/apt/sources.list.d/download_docker_com_linux_{{ docker_apt_ansible_distribution | lower }}.list"
    state: absent

# See https://docs.docker.com/engine/install/debian/#uninstall-old-versions
- name: Ensure old versions of Docker are not installed.
  ansible.builtin.package:
    name: "{{ docker_obsolete_packages }}"
    state: absent

- name: Ensure legacy repo file is not present.
  block:
    - name: Check for legacy docker.list
      ansible.builtin.stat:
        path: "/etc/apt/sources.list.d/docker.list"
      register: legacy_docker_list

    - name: Remove legacy docker.list if it does not reference the official Docker repo
      ansible.builtin.shell: |
        legacy_path="/etc/apt/sources.list.d/docker.list"
        if [ -f "$legacy_path" ]; then
          if grep -q "{{ docker_repo_url }}" "$legacy_path"; then
            # file points to official repo; leave it
            exit 0
          else
            rm -f "$legacy_path"
            exit 0
          fi
        fi
      when: legacy_docker_list.stat.exists
      changed_when: "'removed' in ansible_facts.get('cmd', {}) or (legacy_docker_list.stat.exists and (lookup('file', '/etc/apt/sources.list.d/docker.list') | default('') | search(docker_repo_url) == False))"
      args:
        warn: false
      register: remove_legacy_result
      failed_when: false

- name: Ensure dependencies are installed.
  ansible.builtin.apt:
    name:
      - apt-transport-https
      - ca-certificates
      - python3-debian
    state: present

- name: Add or remove Docker repository.
  ansible.builtin.deb822_repository:
    name: "{{ docker_apt_filename }}"
    types: deb
    uris: "{{ docker_repo_url }}/{{ docker_apt_ansible_distribution | lower }}"
    suites: "{{ ansible_facts.distribution_release }}"
    components: "{{ docker_apt_release_channel }}"
    signed_by: "{{ docker_apt_gpg_key }}"
    state: "{{ 'present' if docker_add_repo | bool else 'absent' }}"
  notify: apt update

- name: Ensure handlers are notified immediately to update the apt cache.
  ansible.builtin.meta: flush_handlers