---

#
# Tasks related to setting up matrix-grafana
#

- name: Ensure matrix-grafana image is pulled
  docker_image:
    name: "{{ matrix_grafana_docker_image }}"
    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
    force_source: "{{ matrix_grafana_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_grafana_docker_image_force_pull }}"
  when: "matrix_grafana_enabled | bool"
  register: result
  retries: "{{ matrix_container_retries_count }}"
  delay: "{{ matrix_container_retries_delay }}"
  until: result is not failed

- name: Ensure grafana paths exists
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    mode: 0750
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  with_items:
    - "{{ matrix_grafana_base_path }}"
    - "{{ matrix_grafana_config_path }}"
    - "{{ matrix_grafana_config_path }}/provisioning"
    - "{{ matrix_grafana_config_path }}/provisioning/datasources"
    - "{{ matrix_grafana_config_path }}/provisioning/dashboards"
    - "{{ matrix_grafana_config_path }}/dashboards"
    - "{{ matrix_grafana_data_path }}"
  when: matrix_grafana_enabled | bool

- name: Ensure grafana.ini present
  ansible.builtin.template:
    src: "{{ role_path }}/templates/grafana.ini.j2"
    dest: "{{ matrix_grafana_config_path }}/grafana.ini"
    mode: 0440
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  when: matrix_grafana_enabled | bool

- name: Ensure provisioning/datasources/default.yaml present
  ansible.builtin.template:
    src: "{{ role_path }}/templates/datasources.yaml.j2"
    dest: "{{ matrix_grafana_config_path }}/provisioning/datasources/default.yaml"
    mode: 0440
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  when: matrix_grafana_enabled | bool

- name: Ensure provisioning/dashboards/default.yaml present
  ansible.builtin.template:
    src: "{{ role_path }}/templates/dashboards.yaml.j2"
    dest: "{{ matrix_grafana_config_path }}/provisioning/dashboards/default.yaml"
    mode: 0440
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  when: matrix_grafana_enabled | bool

- name: Ensure dashboard(s) downloaded
  ansible.builtin.get_url:
    url: "{{ item }}"
    dest: "{{ matrix_grafana_config_path }}/dashboards/"
    force: true
    mode: 0440
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  with_items: "{{ matrix_grafana_dashboard_download_urls_all }}"
  when: matrix_grafana_enabled | bool
  register: result
  retries: "{{ matrix_geturl_retries_count }}"
  delay: "{{ matrix_geturl_retries_delay }}"
  until: result is not failed

- name: Ensure matrix-grafana.service installed
  ansible.builtin.template:
    src: "{{ role_path }}/templates/systemd/matrix-grafana.service.j2"
    dest: "{{ matrix_systemd_path }}/matrix-grafana.service"
    mode: 0644
  register: matrix_grafana_systemd_service_result
  when: matrix_grafana_enabled | bool

- name: Ensure systemd reloaded after matrix-grafana.service installation
  ansible.builtin.service:
    daemon_reload: true
  when: "matrix_grafana_enabled | bool and matrix_grafana_systemd_service_result.changed"

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

- name: Check existence of matrix-grafana service
  ansible.builtin.stat:
    path: "{{ matrix_systemd_path }}/matrix-grafana.service"
  register: matrix_grafana_service_stat

- name: Ensure matrix-grafana is stopped
  ansible.builtin.service:
    name: matrix-grafana
    state: stopped
    enabled: false
    daemon_reload: true
  register: stopping_result
  when: "not matrix_grafana_enabled | bool and matrix_grafana_service_stat.stat.exists"

- name: Ensure matrix-grafana.service doesn't exist
  ansible.builtin.file:
    path: "{{ matrix_systemd_path }}/matrix-grafana.service"
    state: absent
  when: "not matrix_grafana_enabled | bool and matrix_grafana_service_stat.stat.exists"

- name: Ensure systemd reloaded after matrix-grafana.service removal
  ansible.builtin.service:
    daemon_reload: true
  when: "not matrix_grafana_enabled | bool and matrix_grafana_service_stat.stat.exists"
