---
- name: Fail if swift_block_devices is not in the expected format
  fail:
    msg: >-
      Device {{ device_index }} in swift_block_devices is in an invalid format.
      Items should be a dict, containing at least a 'device' field.
  with_items: "{{ swift_block_devices }}"
  when: item is not mapping or 'device' not in item
  loop_control:
    index_var: device_index

- name: Ensure required packages are installed
  package:
    name:
      - parted
      - xfsprogs
    state: present
    cache_valid_time: "{{ apt_cache_valid_time if ansible_facts.os_family == 'Debian' else omit }}"
    update_cache: "{{ True if ansible_facts.os_family == 'Debian' else omit }}"
  become: True
  when: swift_block_devices | length > 0

- name: Check the presence of a partition on the Swift block devices
  become: True
  parted:
    device: "{{ item.device }}"
  with_items: "{{ swift_block_devices }}"
  loop_control:
    label: "{{ item.device }}"
  register: swift_disk_info

- name: Fail if the Swift block devices have already a partition
  fail:
    msg: >
      The physical disk {{ item.item.device }} already has a partition.
      Ensure that each disk in 'swift_block_devices' does not have any
      partitions.
  with_items: "{{ swift_disk_info.results }}"
  when:
    - item.partitions | length > 0
    - item.partitions.0.name != swift_block_devices_part_label
  loop_control:
    label: "{{ item.item.device }}"

- name: Ensure partitions exist for Swift block device
  become: True
  parted:
    device: "{{ item.item.device }}"
    number: 1
    label: gpt
    name: "{{ swift_block_devices_part_label }}"
    state: present
  with_items: "{{ swift_disk_info.results }}"
  when: item.partitions | length == 0
  loop_control:
    label: "{{ item.item.device }}"

- name: Ensure Swift XFS file systems exist
  become: true
  filesystem:
    dev: "{{ partition_name }}"
    force: true
    fstype: xfs
    opts: "-L {{ fs_label }}"
  with_items: "{{ swift_disk_info.results }}"
  when: item.partitions | length == 0
  loop_control:
    label: "{{ device }}"
    index_var: index
  vars:
    device: "{{ item.item.device }}"
    partition_name: "{{ device }}{% if device.startswith('/dev/loop') %}p{% endif %}1"
    fs_label: "{{ item.item.fs_label | default(device | basename) }}"