---

- name: Install required packages
  apt:
    name: "{{ item }}"
  with_items: '{{ instance_status_apt_required }}'

- name: Set up checks file for ELB Instance Status
  template:
    src: templates/checks.yml
    dest: '{{ instance_status_checks_file }}'
  register: instance_status_config
  when: "'http://' not in instance_status_checks_file and 'https://' not in instance_status_checks_file"

- name: Get current elb-instance-status version
  shell: "/usr/local/bin/elb-instance-status --version || true"
  check_mode: no
  register: instance_status_version_cmd

- name: Download elb-instance-status release
  get_url:
    url: 'https://github.com/Luzifer/elb-instance-status/releases/download/{{ instance_status_version }}/elb-instance-status_linux_amd64'
    dest: /usr/local/bin/elb-instance-status
    force: yes
    mode: 0755
  when: instance_status_version not in instance_status_version_cmd.stdout
  register: instance_status_binary

- name: Install system.d service
  copy:
    content: |
      [Unit]
      Description=Machine health checking service
      After=network-online.target
      Requires=network-online.target

      [Service]
      TimeoutStartSec=0
      TimeoutStopSec=0
      Restart=on-failure
      RestartSec=10
      SyslogIdentifier=elb-instance-status
      ExecStart=/usr/local/bin/elb-instance-status \
                  --check-definitions-file={{ instance_status_checks_file }} \
                  --check-interval={{ instance_status_check_interval }} \
                  --config-refresh={{ instance_status_config_refresh }} \
                  --listen=:{{ instance_status_port }} \
                  --unhealthy-threshold={{ instance_status_unhealthy_threshold }} \
                  --verbose={{ instance_status_verbose | to_json }}

      [Install]
      WantedBy=multi-user.target
    dest: /etc/systemd/system/elb-instance-status.service
  register: instance_status_service

- name: Ensure elb-instance-status is enabled
  systemd:
    name: elb-instance-status
    daemon_reload: true
    enabled: true

- name: Ensure elb-instance-status is restarted on changes
  systemd:
    name: elb-instance-status
    state: restarted
  when: (instance_status_config.changed or instance_status_binary.changed or instance_status_service.changed) and packer_build_name is not defined