---
# =============================================================================
# proxmox_ha — tasks
# Manages Proxmox HA group membership and maintenance mode.
# Proxmox HA is self-managing during migrations — this role handles
# cases where you need to explicitly pause or resume HA for a node.
# =============================================================================

# ── Detect HA ─────────────────────────────────────────────────────────────────
- name: "HA | Detect if HA is configured"
  ansible.builtin.command: ha-manager status
  register: ha_detect
  changed_when: false
  failed_when: false
  run_once: true

- name: "HA | Set HA enabled fact"
  ansible.builtin.set_fact:
    ha_is_enabled: "{{ ha_detect.rc == 0 and ha_detect.stdout != '' }}"
  run_once: true

- name: "HA | Skip — HA not configured"
  ansible.builtin.debug:
    msg: "HA is not configured on this cluster — skipping."
  when: not ha_is_enabled
  run_once: true

# ── HA status ─────────────────────────────────────────────────────────────────
- name: "HA | Get status"
  ansible.builtin.command: ha-manager status
  register: ha_status
  changed_when: false
  when:
    - ha_is_enabled
    - ha_action == 'status'
  run_once: true

- name: "HA | Log status"
  ansible.builtin.debug:
    msg: "{{ ha_status.stdout_lines }}"
  when:
    - ha_is_enabled
    - ha_action == 'status'
  run_once: true

# ── Put node in maintenance mode ──────────────────────────────────────────────
# Proxmox uses node maintenance mode via ha-manager to gracefully migrate
# HA-managed VMs before maintenance. This is the correct HA-aware drain.
- name: "HA | Enable maintenance mode for {{ current_node }}"
  ansible.builtin.command: >
    ha-manager crm-command node-maintenance enable {{ current_node }}
  changed_when: true
  run_once: true
  when:
    - ha_is_enabled
    - ha_action == 'disable'

- name: "HA | Wait for {{ current_node }} maintenance mode to be acknowledged"
  ansible.builtin.command: ha-manager status
  register: ha_maintenance_check
  changed_when: false
  until: >-
    'maintenance' in ha_maintenance_check.stdout
    or current_node + ' (maintenance)' in ha_maintenance_check.stdout
  retries: "{{ (ha_timeout / 5) | int }}"
  delay: 5
  run_once: true
  when:
    - ha_is_enabled
    - ha_action == 'disable'

- name: "HA | Maintenance mode enabled for {{ current_node }}"
  ansible.builtin.debug:
    msg: "✓ HA maintenance mode enabled for {{ current_node }} — HA will not restart VMs on this node."
  when:
    - ha_is_enabled
    - ha_action == 'disable'
  run_once: true

# ── Resume HA management ──────────────────────────────────────────────────────
- name: "HA | Disable maintenance mode for {{ current_node }}"
  ansible.builtin.command: >
    ha-manager crm-command node-maintenance disable {{ current_node }}
  changed_when: true
  run_once: true
  when:
    - ha_is_enabled
    - ha_action == 'enable'

- name: "HA | Maintenance mode disabled for {{ current_node }}"
  ansible.builtin.debug:
    msg: "✓ HA management resumed for {{ current_node }}."
  when:
    - ha_is_enabled
    - ha_action == 'enable'
  run_once: true