---
# Purpose: manage the unique ID used in the
# VM hostname construction.

- name: Manage/generate unique ID
  hosts: "{{ cifmw_target_host | default('localhost') }}"
  gather_facts: true
  vars:
    _unique_id_file: >-
      {{ ansible_user_dir }}/ci-framework-data/artifacts/run-id
  tasks:
    - name: Ensure needed directory tree is present on local node
      ansible.builtin.file:
        mode: "0755"
        path: "{{ _unique_id_file | dirname }}"
        state: directory

    - name: Check if we have a unique ID already
      register: _unique_id_stat
      ansible.builtin.stat:
        path: "{{ _unique_id_file }}"

    # Here, we want to allow the user to provide their own run ID,
    # or to fallback on a generated one.
    # In any cases, we want to get the file in place with the correct value.
    # The jinja[invalid] is triggered because ansible-lint doesn't seem to find
    # the community.general.random_string lookup, and doesn't mock it...
    - name: Generate current job unique ID if needed  # noqa: jinja[invalid]
      when:
        - (not _unique_id_stat.stat.exists and cifmw_run_id is undefined)
          or cifmw_run_id is defined
      vars:
        _unique_id: >-
          {{
            lookup('community.general.random_string',
                   special=false, upper=false)
           }}
      ansible.builtin.copy:
        dest: "{{ _unique_id_file }}"
        content: "{{ cifmw_run_id | default(_unique_id) | lower }}"
        mode: "0644"

    # Since the user might pass their own run ID, we can just consume it.
    # If, for a subsequent run, the user doesn't pass the run ID, we will
    # just get it from the file and consume it.
    - name: Load existing run ID
      when:
        - cifmw_run_id is undefined
      block:
        - name: Slurp unique id file if needed
          register: _unique_id_content
          ansible.builtin.slurp:
            path: "{{ _unique_id_file }}"

        - name: Expose cifmw_run_id if needed
          ansible.builtin.set_fact:
            cifmw_run_id: "{{ _unique_id_content.content | b64decode }}"