---
- name: Install node_exporter (Debian)
  ansible.builtin.apt:
    name: prometheus-node-exporter
    state: present
  when: ansible_facts["os_family"] == "Debian"
  become: true

- name: Install node_exporter (Arch)
  community.general.pacman:
    name: prometheus-node-exporter
    state: present
  when: ansible_facts["os_family"] == "Archlinux"
  become: true

- name: Configure node_exporter flags (Debian)
  ansible.builtin.copy:
    dest: /etc/default/prometheus-node-exporter
    content: |
      ARGS="{{ node_exporter_flags }}"
    owner: root
    group: root
    mode: '0644'
  when: ansible_facts["os_family"] == "Debian"
  become: true
  notify: Restart node_exporter

- name: Configure node_exporter flags (Arch)
  ansible.builtin.copy:
    dest: /etc/conf.d/prometheus-node-exporter
    content: |
      NODE_EXPORTER_ARGS="{{ node_exporter_flags }}"
    owner: root
    group: root
    mode: '0644'
  when: ansible_facts["os_family"] == "Archlinux"
  become: true
  notify: Restart node_exporter

- name: Enable and start node_exporter service
  ansible.builtin.systemd:
    name: prometheus-node-exporter
    state: started
    enabled: true
  become: true

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

- name: Open port 9100 for prometheus scraping
  ansible.posix.firewalld:
    port: 9100/tcp
    permanent: true
    state: enabled
    immediate: true
  become: true
  when: >
    ansible_facts.services['firewalld.service'] is defined and
    ansible_facts.services['firewalld.service'].state == 'running'