---
- name: Check if helm is already installed.
  stat:
    path: "{{ helm_install_dir }}/helm"
  failed_when: false
  register: helm_stat

- name: >
    "Check the installed helm version against the desired version
     {{ helm_version }}."
  command: "{{ helm_install_dir }}/helm version"
  changed_when: false
  failed_when: false
  when: helm_stat.stat.exists
  register: existing_helm_version

- name: Install helm
  block:

    - name: Create a tmp directory to extract helm tar.gz
      file:
        path: "{{ tmp_dir }}"
        state: directory
        mode: 0700
      notify: Clean up tmp dir

    - name: Download helm tar.gz.
      get_url:
        url: "{{ helm_release_base_url }}/\
              helm-v{{ helm_version }}-linux-{{ helm_arch }}.tar.gz"
        dest: "{{ tmp_dir }}"
        checksum: "sha256:{{ helm_download_sha256[helm_version][helm_arch] }}"
        mode: 0700

    - name: Extract helm tar.gz
      unarchive:
        src: "{{ tmp_dir }}/\
              helm-v{{ helm_version }}-linux-{{ helm_arch }}.tar.gz"
        dest: "{{ tmp_dir }}"
        remote_src: true
        mode: 0700

    - name: Make sure install directory exists.
      file:
        path: "{{ helm_install_dir }}"
        state: directory
        mode: 0755
      become: true

    - name: Copy helm binary from tmp folder to install location.
      copy:
        src: "{{ tmp_dir }}/linux-{{ helm_arch }}/helm"
        remote_src: true
        dest: "{{ helm_install_dir }}/helm"
        mode: 0755
      become: true

  when: >
    not helm_stat.stat.exists or
    helm_version not in existing_helm_version.stdout