computer-playbook/roles/web-app-xwiki/tasks/_probe_extension.yml

# roles/web-app-xwiki/tasks/_probe_extension.yml
# Probes the 'installed' extension repository to check if a given extension is present.
# Uses the wiki-namespaced REST base (/rest/wikis/xwiki) and falls back to /{id}/{version} if needed.

- name: "XWIKI | Probe extension {{ ext_id }} (installed repo)"
  when: ext_enabled | bool
  uri:
    url: "{{ [XWIKI_REST_XWIKI, 'repositories/installed/extensions', ext_id | urlencode] | url_join }}?namespace={{ 'wiki:xwiki' | urlencode }}"
    method: GET
    user: "{{ XWIKI_SUPERADMIN_USERNAME }}"
    password: "{{ XWIKI_SUPERADMIN_PASSWORD }}"
    force_basic_auth: true
    follow_redirects: none
    return_content: no
    headers:
      Accept: "application/xml"
    status_code: [200, 401, 404]
  register: _probe
  changed_when: false

# Some XWiki builds/versions answer on /{id}/{version}. Try that if plain /{id} returned 404.
- name: "XWIKI | Probe extension {{ ext_id }} with version (fallback)"
  when:
    - ext_enabled | bool
    - (_probe.status | default(404)) | int == 404
    - ext_version is defined
  uri:
    url: "{{ [XWIKI_REST_XWIKI, 'repositories/installed/extensions', ext_id | urlencode, ext_version] | url_join }}?namespace={{ 'wiki:xwiki' | urlencode }}"
    method: GET
    user: "{{ XWIKI_SUPERADMIN_USERNAME }}"
    password: "{{ XWIKI_SUPERADMIN_PASSWORD }}"
    force_basic_auth: true
    follow_redirects: none
    return_content: no
    headers:
      Accept: "application/xml"
    status_code: [200, 401, 404]
  register: _probe_v
  changed_when: false

- name: "XWIKI | Save probe result for {{ ext_id }}"
  when: ext_enabled | bool
  set_fact:
    "{{ result_var }}": "{{ (_probe_v if (_probe_v is defined) else _probe) }}"