---
- name: Deploy Prometheus Alertmanager with Pushover
  hosts: ubuntu
  become: true
  tasks:
  - name: Check if host has alertmanager service
    ansible.builtin.set_fact:
      has_alertmanager_service: "{{'alertmanager' in services}}"

  - name: Skip hosts without alertmanager service
    ansible.builtin.meta: end_host
    when: not has_alertmanager_service

  - name: Install Alertmanager
    ansible.builtin.apt:
      name: prometheus-alertmanager
      state: present
      update_cache: true

  - name: Create alertmanager config directory
    ansible.builtin.file:
      path: /etc/alertmanager
      state: directory
      owner: prometheus
      group: prometheus
      mode: '750'

  - name: Template alertmanager configuration
    ansible.builtin.template:
      src: prometheus/alertmanager.yml
      dest: /etc/alertmanager/alertmanager.yml
      owner: prometheus
      group: prometheus
      mode: '550'
    notify: restart alertmanager

  - name: Start and enable Alertmanager service
    ansible.builtin.systemd:
      name: prometheus-alertmanager
      state: started
      enabled: true
      daemon_reload: true

  handlers:
  - name: restart alertmanager
    ansible.builtin.systemd:
      name: prometheus-alertmanager
      state: restarted