---
- name: Check whether Docker is available
  ansible.builtin.command:
    argv:
      - docker
      - info
  register: portainer_docker_info
  changed_when: false
  failed_when: false

- name: Find and update Portainer
  when: portainer_docker_info.rc == 0
  block:
    - name: List all container IDs
      ansible.builtin.command:
        argv:
          - docker
          - container
          - ls
          - --all
          - --quiet
      register: portainer_all_containers
      changed_when: false

    - name: Inspect all container images
      ansible.builtin.command:
        argv: >-
          {{ ['docker', 'container', 'inspect']
             + portainer_all_containers.stdout_lines }}
      register: portainer_container_inspection
      changed_when: false
      when: portainer_all_containers.stdout_lines | length > 0

    - name: Select installed Portainer editions
      ansible.builtin.set_fact:
        portainer_installed_images: >-
          {{ (portainer_container_inspection.stdout | default('[]') | from_json)
             | map(attribute='Config.Image')
             | select('match',
                 '^(?:[^/]+/)?portainer/(?:portainer|portainer-(?:ce|ee))(?::|@|$)')
             | unique
             | list }}

    - name: Update Portainer to the newest release
      ansible.builtin.command:
        argv:
          - docker
          - run
          - --rm
          - --pull
          - always
          - --volume
          - /var/run/docker.sock:/var/run/docker.sock
          - "{{ portainer_updater_image }}"
          - portainer
          - >-
            --image={{ 'portainer/portainer-ee:' ~ portainer_target_tag
                       if 'portainer-ee' in item
                       else 'portainer/portainer-ce:' ~ portainer_target_tag }}
      loop: "{{ portainer_installed_images }}"
      loop_control:
        label: "{{ item }}"
      register: portainer_update
      changed_when: true
      when:
        - portainer_installed_images | length > 0
        - not ansible_check_mode

    - name: Report when no Portainer server is installed
      ansible.builtin.debug:
        msg: No Portainer CE or Business Edition server container found; skipping.
      when: portainer_installed_images | length == 0