---
- name: apg package is installed
  apt:
    name: apg
    state: present

- name: Generate random password for nrpe user
  command: apg -n1 -m 12 -M SCNL
  register: postgresql_nrpe_password
  changed_when: False

- name: python-psycopg2 is installed (Ansible dependency)
  apt:
    name: python-psycopg2
    state: present
  when: ansible_python_version is version('3', '<')

- name: python3-psycopg2 is installed (Ansible dependency)
  apt:
    name: python3-psycopg2
    state: present
  when: ansible_python_version is version('3', '>=')

- name: Is nrpe present ?
  stat:
    path: /etc/nagios/nrpe.d/evolix.cfg
  register: nrpe_evolix_config

- block:
  - name: Create nrpe user
    become: yes
    become_user: postgres
    postgresql_user:
      name: nrpe
      password: '{{ postgresql_nrpe_password.stdout }}'
      encrypted: yes
      no_password_changes: yes
    register: postgresql_create_nrpe_user
    when: nrpe_evolix_config.stat.exists

  - name: Add NRPE check
    lineinfile:
      name: /etc/nagios/nrpe.d/evolix.cfg
      regexp: '^command\[check_pgsql\]='
      line: 'command[check_pgsql]=/usr/lib/nagios/plugins/check_pgsql -H localhost -l nrpe -p "{{postgresql_nrpe_password.stdout}}"'
    notify: restart nagios-nrpe-server
    when: postgresql_create_nrpe_user is changed
  when: nrpe_evolix_config.stat.exists