---
- name: install required packages
  become: true
  ansible.builtin.apt:
    update_cache: true
    force_apt_get: true
    cache_valid_time: 3600
    pkg:
      - curl
      - jq

- name: find if binary is already installed
  ansible.builtin.file:
    path: '{{ helm_binary_path }}'
  register: helm_stat
  changed_when: false
  failed_when: false

- name: find current installed version
  when: helm_stat.state != "absent"
  ansible.builtin.command: "{{ helm_binary_path }} version --template='{% raw %}{{.Version}}{% endraw %}'"
  changed_when: false
  register: helm_local_version_exec

- name: find latest available version
  connection: local
  ansible.builtin.shell: |-
    curl -sSL https://api.github.com/repos/helm/helm/releases/latest | jq -r '.tag_name'
  register: latest_helm_version_exec
  when: helm_install_version is falsy or helm_install_version == "latest"
  changed_when: false

- name: set helm facts
  ansible.builtin.set_fact:
    helm_latest_version_available: '{{ latest_helm_version_exec.get("stdout", "") if latest_helm_version_exec is defined }}'
    helm_local_version: '{{ helm_local_version_exec.get("stdout", "") if helm_local_version_exec is defined }}'
    helm_target_install_version: '{{ helm_install_version if helm_install_version != "latest" else latest_helm_version_exec.get("stdout", "") }}'

- name: install binary
  become: true
  when: helm_stat.state == "absent" or (helm_local_version != helm_target_install_version and helm_install_version is not falsy)
  block:
    - name: create temporary directory
      ansible.builtin.tempfile:
        state: directory
      register: tmp_dir
      changed_when: false
    - name: retrieve archive
      ansible.builtin.unarchive:
        remote_src: true
        src: "https://get.helm.sh/helm-{{ helm_install_version if helm_install_version is not match('^$|^latest$') else helm_latest_version_available }}-linux-amd64.tar.gz"
        dest: '{{ tmp_dir.path }}'
    - name: install binary
      ansible.builtin.copy:
        remote_src: true
        src: '{{ tmp_dir.path }}/linux-amd64/helm'
        dest: '{{ helm_binary_path }}'
        owner: root
        group: root
        mode: '0755'
    - name: cleanup
      ansible.builtin.file:
        path: '{{ tmp_dir.path }}'
        state: absent