---

- name: Get latest postgres_exporter version
  github_release:
    user: prometheus-community
    repo: postgres_exporter
    action: latest_release
    token: "{{ vault_github_token }}"
  delegate_to: localhost
  run_once: true
  register: postgresql_exporter_version
- name: "{{ postgresql_exporter_version }}"
  set_fact:
    postgresql_exporter_version: "{{ postgresql_exporter_version | replace('v', '', 1) | trim }}"
  run_once: true

- name: Set architecture alias
  set_fact:
    architecture_alias: "amd64"  # noqa: var-naming[no-role-prefix]
  when: ansible_architecture == "x86_64"

- name: Set architecture alias
  set_fact:
    architecture_alias: "arm64"  # noqa: var-naming[no-role-prefix]
  when: ansible_architecture == "aarch64"

- name: "Download postgres_exporter from GitHub"
  get_url:
    url: "https://github.com/prometheus-community/postgres_exporter/releases/download/\
          v{{ postgresql_exporter_version.tag }}/postgres_exporter-{{ postgresql_exporter_version.tag }}\
          .linux-{{ architecture_alias }}.tar.gz"
    dest: "/var/tmp/postgres_exporter.tar.gz"
    mode: "0644"
  register: postgresql_exporter_download_archive
  until: postgresql_exporter_download_archive is succeeded
  retries: 3
  delay: 5

- name: Unpack postgres_exporter
  unarchive:
    remote_src: true
    src: "/var/tmp/postgres_exporter.tar.gz"
    dest: "{{ pgsql_exporter_install_dir }}"
    owner: root
    group: root
    extra_opts:
      --strip-components=1
    include:
      - "postgres_exporter-{{ postgresql_exporter_version.tag }}.linux-{{ architecture_alias }}/postgres_exporter"
  notify: Restart postgres_exporter

- name: Copy the postgres_exporter systemd service file
  template:
    src: postgres_exporter.service.j2
    dest: /etc/systemd/system/postgres_exporter.service
    owner: root
    group: root
    mode: "0644"
  notify: Restart postgres_exporter