---
- name: Add Grafana APT key
  ansible.builtin.get_url:
    url: https://apt.grafana.com/gpg.key
    dest: /etc/apt/keyrings/grafana.asc
    mode: "0644"

- name: Add Grafana APT repository
  ansible.builtin.apt_repository:
    repo: "deb [signed-by=/etc/apt/keyrings/grafana.asc] https://apt.grafana.com stable main"
    state: present
    filename: grafana

- name: Install Grafana
  ansible.builtin.apt:
    name: grafana
    state: present
    update_cache: true
  notify: Restart grafana

- name: Create Grafana provisioning directories
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    owner: grafana
    group: grafana
    mode: "0755"
  loop:
    - /etc/grafana/provisioning/datasources
    - /etc/grafana/provisioning/dashboards
    - /var/lib/grafana/dashboards

- name: Deploy Grafana datasources
  ansible.builtin.template:
    src: datasources.yml.j2
    dest: /etc/grafana/provisioning/datasources/datasources.yml
    owner: grafana
    group: grafana
    mode: "0640"
  notify: Restart grafana

- name: Deploy Grafana dashboard provisioning
  ansible.builtin.template:
    src: dashboards.yml.j2
    dest: /etc/grafana/provisioning/dashboards/dashboards.yml
    owner: grafana
    group: grafana
    mode: "0640"
  notify: Restart grafana

- name: Deploy default dashboards
  ansible.builtin.copy:
    src: "{{ item }}"
    dest: /var/lib/grafana/dashboards/
    owner: grafana
    group: grafana
    mode: "0644"
  loop: "{{ lookup('fileglob', 'files/dashboards/*.json', wantlist=True) }}"
  notify: Restart grafana
  ignore_errors: true  # OK if no dashboards yet

- name: Configure Grafana
  ansible.builtin.lineinfile:
    path: /etc/grafana/grafana.ini
    regexp: "{{ item.regexp }}"
    line: "{{ item.line }}"
    state: present
  loop:
    - { regexp: '^;?http_port', line: 'http_port = 3000' }
    - { regexp: '^;?http_addr', line: 'http_addr = 0.0.0.0' }
  notify: Restart grafana

- name: Enable and start Grafana
  ansible.builtin.systemd:
    name: grafana-server
    enabled: true
    state: started