---
- name: Create Grafana system user
  ansible.builtin.user:
    name: "{{ grafana_user }}"
    system: true
    create_home: false
    shell: /usr/sbin/nologin
    state: present

- name: Create Grafana directories
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    owner: "{{ grafana_user }}"
    group: "{{ grafana_group }}"
    mode: '0755'
  loop:
    - "{{ grafana_data_dir }}"
    - "{{ grafana_logs_dir }}"
    - "{{ grafana_plugins_dir }}"
    - "{{ grafana_provisioning_dir }}"
    - "{{ grafana_provisioning_dir }}/datasources"
    - "{{ grafana_provisioning_dir }}/dashboards"
    - "{{ grafana_data_dir }}/dashboards"
    - /etc/grafana

- name: Download Grafana binary
  ansible.builtin.get_url:
    url: "https://dl.grafana.com/oss/release/grafana-{{ grafana_version }}.linux-amd64.tar.gz"
    dest: "/tmp/grafana-{{ grafana_version }}.tar.gz"
    mode: '0644'
  register: grafana_download

- name: Extract Grafana
  ansible.builtin.unarchive:
    src: "/tmp/grafana-{{ grafana_version }}.tar.gz"
    dest: /opt
    remote_src: true
    creates: "/opt/grafana-v{{ grafana_version }}"
  when: grafana_download.changed

- name: Create Grafana symlink
  ansible.builtin.file:
    src: "/opt/grafana-v{{ grafana_version }}"
    dest: /opt/grafana
    state: link

- name: Deploy Grafana configuration
  ansible.builtin.template:
    src: grafana.ini.j2
    dest: /etc/grafana/grafana.ini
    owner: "{{ grafana_user }}"
    group: "{{ grafana_group }}"
    mode: '0640'
  notify: restart grafana

- name: Deploy VictoriaMetrics datasource provisioning
  ansible.builtin.template:
    src: datasource-victoriametrics.yml.j2
    dest: "{{ grafana_provisioning_dir }}/datasources/victoriametrics.yml"
    owner: "{{ grafana_user }}"
    group: "{{ grafana_group }}"
    mode: '0644'
  notify: restart grafana
  when: grafana_datasource_vm_enabled

- name: Deploy dashboard provisioning
  ansible.builtin.template:
    src: dashboards.yml.j2
    dest: "{{ grafana_provisioning_dir }}/dashboards/default.yml"
    owner: "{{ grafana_user }}"
    group: "{{ grafana_group }}"
    mode: '0644'
  notify: restart grafana

- name: Deploy Grafana systemd service
  ansible.builtin.template:
    src: grafana.service.j2
    dest: /etc/systemd/system/grafana.service
    owner: root
    group: root
    mode: '0644'
  notify: restart grafana

- name: Enable and start Grafana service
  ansible.builtin.systemd:
    name: grafana
    enabled: "{{ grafana_service_enabled }}"
    state: "{{ grafana_service_state }}"
    daemon_reload: true