---
- name: Set k3s service name
  ansible.builtin.set_fact:
    k3s_service_name: "{{ 'k3s' if k3s_role == 'server' else 'k3s-agent' }}"

- name: Gather service facts
  ansible.builtin.service_facts:

- name: Build k3s install environment when service is missing
  ansible.builtin.set_fact:
    k3s_install_env: >-
      {{ {'INSTALL_K3S_EXEC': k3s_role}
         | combine((k3s_version | default('') | length > 0) | ternary({'INSTALL_K3S_VERSION': k3s_version}, {})) }}
  when: (k3s_service_name + ".service") not in ansible_facts.services

- name: Install k3s when service is missing
  ansible.builtin.shell: |
    set -euo pipefail
    timeout "{{ k3s_install_timeout | default(600) }}" sh -c \
      'curl -sfL --connect-timeout 20 --max-time 300 https://get.k3s.io | sh -'
  environment:
    "{{ k3s_install_env }}"
  args:
    creates: /usr/local/bin/k3s
    executable: /bin/bash
  when: (k3s_service_name + ".service") not in ansible_facts.services

- name: Refresh service facts after install
  ansible.builtin.service_facts:

- name: Ensure k3s service is installed
  ansible.builtin.assert:
    that:
      - (k3s_service_name + ".service") in ansible_facts.services
    fail_msg: "k3s service {{ k3s_service_name }} is not installed. Run the k3s role or reset playbook first."

- name: Start k3s service
  ansible.builtin.systemd:
    name: "{{ k3s_service_name }}"
    state: started
    enabled: true
    no_block: true

- name: Wait for k3s to become active
  ansible.builtin.command: "systemctl is-active {{ k3s_service_name }}"
  register: k3s_service_state
  changed_when: false
  retries: "{{ [1, (k3s_start_timeout_seconds | default(120) | int) // 10] | max }}"
  delay: 10
  until: k3s_service_state.stdout in ["active", "activating"]
  failed_when: k3s_service_state.stdout not in ["active", "activating"]