---
# Restart a single service by name (parametric, allowlisted).
# Run: ansible-playbook -i inventory/hosts.yml playbooks/bf-service-restart.yml -e operation_wave=lab -e operation_confirmed=true --limit lab -e service_name=blueforce-agent
# Only names in service_allowlist are accepted; everything else fails closed.
# No Semaphore Pro feature is used.
- name: Restart allowlisted service
  hosts: "{{ operation_wave | default('invalid-wave', true) }}"
  gather_facts: false
  become: true
  vars:
    approved_operation_waves: [lab, pilot_1, pilot_2, wave_1, wave_2, production]
    production_override: false
    service_name: ""
    service_allowlist:
      - blueforce-agent
      - docker
      - sshd
      - ssh
      - systemd-journald
      - cron
  pre_tasks:
    - name: Require confirmed approved operation wave scope
      ansible.builtin.assert:
        that:
          - operation_wave in approved_operation_waves
          - operation_confirmed | bool
          - operation_wave in groups
          - ansible_play_hosts_all | length > 0
          - ansible_play_hosts_all | difference(groups[operation_wave]) | length == 0
        fail_msg: "Set operation_wave to one inventory wave and operation_confirmed=true; full-fleet scope is refused."
      run_once: true

    - name: Require separate production override
      ansible.builtin.assert:
        that:
          - operation_wave != 'production' or production_override | bool
        fail_msg: "Production operation requires production_override=true in addition to operation_confirmed=true."
      run_once: true
  tasks:
    - name: Validate service_name is provided
      ansible.builtin.assert:
        that:
          - service_name | length > 0
        fail_msg: "service_name is required, e.g. -e service_name=blueforce-agent"

    - name: Validate service_name is allowlisted
      ansible.builtin.assert:
        that:
          - service_name in service_allowlist
        fail_msg: "service_name '{{ service_name }}' is not in the allowlist. Refusing to restart arbitrary services."

    - name: Restart service
      ansible.builtin.systemd:
        name: "{{ service_name }}"
        state: restarted