---

- name: Check for existing version cache file
  stat:
    path: "{{ atl_product_version_cache }}"
  register: cached

# Case: File exists, always use its value
- name: Use version for product version
  block:

    - name: Read cached version from file
      command: "cat {{ atl_product_version_cache }}"
      register: atl_product_version_file
      changed_when: false

    - name: Set the local var to cached version
      set_fact:
        atl_product_version: "{{ atl_product_version_file.stdout }}"

  when: cached.stat.exists


# Case: File doesn't exist and no version has been set; find latest.
- name: Fetch and cache latest version when no override
  block:

    - name: Fetch the latest version from URL
      set_fact:
        atl_product_version_json: "{{ lookup('url', '{{ atl_product_latest_version_url }}') }}"

    - name: Set the local var to retrieved version
      set_fact:
        atl_product_version: "{{ atl_product_version_json.version }}"

  when:
    not cached.stat.exists and
    (atl_product_version is undefined or
     not atl_product_version or
     atl_product_version == "latest")


# At this point atl_product_version should be set, cache if necessary.
- name: Write override cached version when specified
  template:
    src: version.j2
    dest: "{{ atl_product_version_cache }}"
    force: false


# Note: We don't cache this in the shared drive to the complexity
# around download race-conditions if multiple nodes are starting at
# the same time. When downloading from product-downloads.atlassian.com
# (which is a CDN) takes seconds anyway.
- name: Fetch product installer
  get_url:
    url: "{{ atl_product_download_url }}"
    dest: "{{ atl_product_download }}"
    mode: 0644
    force: false

- name: Create target version directory
  file:
    path: "{{ atl_product_installation_base }}/{{ atl_product_version }}"
    state: directory
    owner: "{{ atl_product_user }}"

- name: Unpack the product packages
  unarchive:
    remote_src: true
    src: "{{ atl_product_download }}"
    dest: "{{ atl_product_installation_base }}/{{ atl_product_version }}"
    creates: "{{ atl_product_installation_base }}/{{ atl_product_version }}/bin/catalina.sh"
    owner: "{{ atl_product_user }}"
    group: "{{ atl_product_user }}"
    mode: 0755
    # Strip off the lead product/version specific directory to normaise naming
    extra_opts:
      - "--strip-components=1"

- name: Symlink the installed version to current
  file:
    src: "{{ atl_product_installation_base }}/{{ atl_product_version }}"
    dest: "{{ atl_product_installation_target }}"
    state: link
    force: true