---
- name: Check for the restore canary file
  stat:
    path: "{{ atl_backup_home_restore_canary_path }}"
  register: restore_canary

- block:
    - name: Create shared home if necessary
      file:
        path: "{{ atl_product_home_shared }}"
        state: directory
        mode: 0750
        owner: "{{ atl_product_user }}"
        group: "{{ atl_product_user }}"

    # We also need to use `tar` here as `unarchive` runs `tar` three times doing
    # idempotence checks, which we can skip.
    - name: Restore the shared-home backup
      command:
        argv:
          - "tar"
          - "--extract"
          - "--file"
          - "{{ atl_backup_home_dest }}"
          - "--directory"
          - "{{ atl_product_home_shared }}"
        warn: false
      when: atl_backup_home_is_server is not defined or not atl_backup_home_is_server|bool

    # Use tar transform to convert the Confluence Server (unclustered)
    # layout to shared-home version. What occurs is:
    #
    #  * --transform runs first, moving attachments into the shared home.
    #  * --strip-components removes the top-level directory
    #
    # NOTE: Also see the `confluence_config` role, which uses
    # symlinks to support server and clustered layouts
    # concurrently.
    - name: Restore a Confluence server home to share-home layout
      command:
        argv:
          - "tar"
          - "--extract"
          - "--transform=s,^attachments,shared-home/attachments,"
          - "--strip-components=1"
          - "--file"
          - "{{ atl_backup_home_dest }}"
          - "--directory"
          - "{{ atl_product_home_shared }}"
        warn: false
      when: atl_backup_home_is_server is defined and atl_backup_home_is_server|bool

    - name: Set shared home owner and group to application user
      file:
        path: "{{ atl_product_home_shared }}"
        recurse: yes
        group: "{{ atl_product_user }}"
        owner: "{{ atl_product_user }}"
        state: directory

    - name: Set version file owner and group to root
      file:
        path: "{{ atl_product_version_cache }}"
        group: root
        owner: root
        state: file
      # Ignore the error in case there is no product version file in the backup
      ignore_errors: yes

    - name: Create restore-canary if necessary
      copy:
        dest: "{{ atl_backup_home_restore_canary_path }}"
        content: "{{ atl_backup_id }}"

  when: not restore_canary.stat.exists