---
- name: Deploy Grafana
  hosts: ubuntu
  become: true
  tasks:
  - name: Check if host has grafana service
    ansible.builtin.set_fact:
      has_grafana_service: "{{'grafana' in services}}"

  - name: Skip hosts without grafana service
    ansible.builtin.meta: end_host
    when: not has_grafana_service

  - name: Add Grafana repository
    ansible.builtin.deb822_repository:
      name: grafana
      types: [deb]
      uris: https://apt.grafana.com
      suites: [stable]
      components: [main]
      signed_by: https://apt.grafana.com/gpg.key
      state: present

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

  - name: Create provisioning directories
    become: true
    ansible.builtin.file:
      path: "{{item}}"
      state: directory
      owner: grafana
      group: grafana
      mode: '750'
    loop:
      - /etc/grafana/provisioning/dashboards
      - /etc/grafana/provisioning/datasources
      - /etc/grafana/provisioning/users

  - name: Create dashboards directory
    become: true
    ansible.builtin.file:
      path: /var/lib/grafana/dashboards
      state: directory
      owner: grafana
      group: grafana
      mode: '750'

  - name: Template configuration files
    become: true
    ansible.builtin.template:
      src: "{{item.src}}"
      dest: "{{item.dest}}"
      owner: grafana
      group: grafana
      mode: '550'
    loop:
      - src: "datasource.yml.j2"
        dest: "/etc/grafana/provisioning/datasources/prometheus.yml"
      - src: "users.yml.j2"
        dest: "/etc/grafana/provisioning/users/users.yml"
    notify: restart grafana

  - name: Template Grafana main configuration
    become: true
    ansible.builtin.template:
      src: "grafana.ini.j2"
      dest: "/etc/grafana/grafana.ini"
      owner: grafana
      group: grafana
      mode: '640'
    when: grafana_oauth_enabled | default(false)
    notify: restart grafana

  - name: Configure dashboard provisioning
    become: true
    ansible.builtin.copy:
      content: |
        apiVersion: 1
        providers:
          - name: 'default'
            orgId: 1
            folder: ''
            type: file
            disableDeletion: false
            updateIntervalSeconds: 10
            allowUiUpdates: true
            options:
              path: /var/lib/grafana/dashboards
      dest: /etc/grafana/provisioning/dashboards/dashboard.yml
      owner: grafana
      group: grafana
      mode: '550'
    notify: restart grafana

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

  handlers:
  - name: restart grafana
    become: true
    ansible.builtin.systemd:
      name: grafana-server
      state: restarted