---

#
# Tasks related to setting up matrix-prometheus-node-exporter
#

- name: Ensure matrix-prometheus-node-exporter image is pulled
  docker_image:
    name: "{{ matrix_prometheus_node_exporter_docker_image }}"
    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
    force_source: "{{ matrix_prometheus_node_exporter_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_prometheus_node_exporter_docker_image_force_pull }}"
  when: "matrix_prometheus_node_exporter_enabled | bool"
  register: result
  retries: "{{ matrix_container_retries_count }}"
  delay: "{{ matrix_container_retries_delay }}"
  until: result is not failed

- name: Ensure matrix-prometheus-node-exporter.service installed
  ansible.builtin.template:
    src: "{{ role_path }}/templates/systemd/matrix-prometheus-node-exporter.service.j2"
    dest: "{{ matrix_systemd_path }}/matrix-prometheus-node-exporter.service"
    mode: 0644
  register: matrix_prometheus_node_exporter_systemd_service_result
  when: matrix_prometheus_node_exporter_enabled | bool

- name: Ensure systemd reloaded after matrix-prometheus.service installation
  ansible.builtin.service:
    daemon_reload: true
  when: "matrix_prometheus_node_exporter_enabled | bool and matrix_prometheus_node_exporter_systemd_service_result.changed"

#
# Tasks related to getting rid of matrix-prometheus-node-exporter (if it was previously enabled)
#

- name: Check existence of matrix-prometheus-node-exporter service
  ansible.builtin.stat:
    path: "{{ matrix_systemd_path }}/matrix-prometheus-node-exporter.service"
  register: matrix_prometheus_node_exporter_service_stat

- name: Ensure matrix-prometheus-node-exporter is stopped
  ansible.builtin.service:
    name: matrix-prometheus-node-exporter
    state: stopped
    enabled: false
    daemon_reload: true
  register: stopping_result
  when: "not matrix_prometheus_node_exporter_enabled | bool and matrix_prometheus_node_exporter_service_stat.stat.exists"

- name: Ensure matrix-prometheus-node-exporter.service doesn't exist
  ansible.builtin.file:
    path: "{{ matrix_systemd_path }}/matrix-prometheus-node-exporter.service"
    state: absent
  when: "not matrix_prometheus_node_exporter_enabled | bool and matrix_prometheus_node_exporter_service_stat.stat.exists"

- name: Ensure systemd reloaded after matrix-prometheus-node-exporter.service removal
  ansible.builtin.service:
    daemon_reload: true
  when: "not matrix_prometheus_node_exporter_enabled | bool and matrix_prometheus_node_exporter_service_stat.stat.exists"