---
- name: Ensure FUSE is installed
  package:
    name: fuse
    state: present

- name: Ensure custom facts directory exists
  file:
    mode: 0755
    path: /etc/ansible/facts.d
    state: directory

- name: 'Ensure {{ plugins_src_dir }} directory exists'
  file:
    path: '{{ plugins_src_dir }}'
    state: directory
    mode: 0755

- name: Detect the latest stargz-snapshotter version
  uri:
    url: https://api.github.com/repos/containerd/stargz-snapshotter/releases/latest
  register: stargz_latest_release_tag

- name: Determine whether or not the latest version of stargz-snapshotter's AppImage is already installed
  set_fact:
    install_stargz: "{{ (ansible_local.stargz is not defined) or \
      ((ansible_local.stargz is defined) and \
      (ansible_local['stargz']['settings']['version'] != stargz_latest_release_tag.json.tag_name | replace('v',''))) }}"

- name: Fetch CHECKSUMS file of stargz-snapshotter installer
  uri:
    url: "https://github.com/containerd/stargz-snapshotter/releases/download/{{ stargz_latest_release_tag.json.tag_name }}/\
      stargz-snapshotter-{{ stargz_latest_release_tag.json.tag_name }}-linux-amd64.tar.gz.sha256sum"
    return_content: true
  register: stargz_checksum_file
  when: install_stargz

- name: Find the Checksum of stargz-snapshotter installer
  set_fact:
    stargz_checksum: "{{ stargz_checksum_file.content | regex_search('.*stargz-snapshotter-v((\\d*.)*\\d*)-linux-amd64.tar.gz') | \
      regex_replace('  stargz-snapshotter-v((\\d*.)*\\d*)-linux-amd64.tar.gz','') }}"
  when: install_stargz

- name: Acquire stargz-snapshotter's installer
  get_url:
    url: "https://github.com/containerd/stargz-snapshotter/releases/download/{{ stargz_latest_release_tag.json.tag_name }}/\
      stargz-snapshotter-{{ stargz_latest_release_tag.json.tag_name }}-linux-amd64.tar.gz"
    dest: '{{ plugins_src_dir }}/stargz-snapshotter-{{ stargz_latest_release_tag.json.tag_name }}-linux-amd64.tar.gz'
    checksum: 'sha256:{{ stargz_checksum }}'
    mode: 0755
  when: install_stargz

- name: Ensure stargz-snapshotter is installed
  unarchive:
    path: '{{ plugins_src_dir }}/stargz-snapshotter-{{ stargz_latest_release_tag.json.tag_name }}-linux-amd64.tar.gz'
    dest: /usr/local/bin
    remote_src: true
  when: install_stargz

- name: Ensure /etc/containerd-stargz-grpc directory exists
  file:
    path: /etc/containerd-stargz-grpc
    mode: 0755
    state: directory

- name: Ensure configuration and Service files are copied
  copy:
    src: '{{ item.name }}'
    dest: '{{ item.dest }}'
    mode: 0644
  loop:
    - name: grpc-config.toml
      dest: /etc/containerd-stargz-grpc/config.toml
    - name: config.toml
      dest: /etc/continerd/
    - name: stargz-snapshotter.service
      dest: /etc/systemd/system/

- name: Ensure stargz-snapshotter service is enabled and started
  systemd:
    name: stargz-snapshotter
    enabled: true
    state: started
  notify: restart containerd

- name: Save meta information about the version of stargz-snapshotter that was installed
  community.general.ini_file:
    path: /etc/ansible/facts.d/stargz.fact
    mode: 0644
    section: settings
    option: version
    value: "{{ stargz_latest_release_tag.json.tag_name | replace('v','') }}"
    backup: true
    no_extra_spaces: true
  when: install_stargz