---
- name: Install Node Exporter
  ansible.builtin.apt:
    name: prometheus-node-exporter
    state: present
  when: monitoring_exporter_install_node

- name: Create Node Exporter textfile directory
  ansible.builtin.file:
    path: "{{ monitoring_exporter_textfile_dir }}"
    state: directory
    owner: root
    group: root
    mode: "0755"
  when: monitoring_exporter_install_node

- name: Create Node Exporter systemd override directory
  ansible.builtin.file:
    path: /etc/systemd/system/prometheus-node-exporter.service.d
    state: directory
    owner: root
    group: root
    mode: "0755"
  when: monitoring_exporter_install_node

- name: Configure Node Exporter collectors
  ansible.builtin.copy:
    dest: /etc/systemd/system/prometheus-node-exporter.service.d/override.conf
    owner: root
    group: root
    mode: "0644"
    content: |
      [Service]
      ExecStart=
      ExecStart=/usr/bin/prometheus-node-exporter --web.listen-address={{ monitoring_exporter_node_listen_address }} --collector.systemd --collector.textfile.directory={{ monitoring_exporter_textfile_dir }}
  when: monitoring_exporter_install_node
  notify:
    - reload systemd
    - restart node exporter

- name: Ensure Node Exporter is enabled and running
  ansible.builtin.systemd:
    name: prometheus-node-exporter
    enabled: true
    state: started
  when: monitoring_exporter_install_node

- name: Install SMART Exporter dependencies
  ansible.builtin.apt:
    name:
      - jq
      - smartmontools
    state: present
  when: monitoring_exporter_install_smart

- name: Remove obsolete SMART Exporter container unit
  ansible.builtin.systemd:
    name: homelab-smartctl-exporter
    enabled: false
    state: stopped
  failed_when: false
  when: monitoring_exporter_install_smart

- name: Install SMART metric collection script
  ansible.builtin.template:
    src: smartctl-metrics.sh.j2
    dest: /usr/local/sbin/homelab-smartctl-metrics
    owner: root
    group: root
    mode: "0755"
  when: monitoring_exporter_install_smart

- name: Install SMART metric collection service
  ansible.builtin.copy:
    dest: /etc/systemd/system/homelab-smartctl-metrics.service
    owner: root
    group: root
    mode: "0644"
    content: |
      [Unit]
      Description=Publish SMART metrics for Node Exporter

      [Service]
      Type=oneshot
      ExecStart=/usr/local/sbin/homelab-smartctl-metrics
  when: monitoring_exporter_install_smart
  notify: reload systemd

- name: Install SMART metric collection timer
  ansible.builtin.copy:
    dest: /etc/systemd/system/homelab-smartctl-metrics.timer
    owner: root
    group: root
    mode: "0644"
    content: |
      [Unit]
      Description=Collect SMART metrics every 15 minutes

      [Timer]
      OnBootSec=2m
      OnUnitActiveSec=15m
      Persistent=true

      [Install]
      WantedBy=multi-user.target
  when: monitoring_exporter_install_smart
  notify: reload systemd

- name: Enable SMART metric collection timer
  ansible.builtin.systemd:
    name: homelab-smartctl-metrics.timer
    daemon_reload: true
    enabled: true
    state: started
  when: monitoring_exporter_install_smart

- name: Run initial SMART metric collection
  ansible.builtin.systemd:
    name: homelab-smartctl-metrics.service
    state: started
  when: monitoring_exporter_install_smart