---
- name: Ensure mountpoint exists
  ansible.builtin.file:
    path: "{{ m.path }}"
    state: directory
    mode: "0755"

- name: Ensure marker directory exists (mkfs_once)
  ansible.builtin.file:
    path: /var/lib/prole/iscsi
    state: directory
    owner: root
    group: root
    mode: "0755"
  when: m.mkfs_once | default(false) | bool

- name: Compute mkfs marker path (mkfs_once)
  ansible.builtin.set_fact:
    _iscsi_mkfs_marker: >-
      /var/lib/prole/iscsi/mkfs-
      {{ (m.src | regex_replace('^UUID=', 'uuid-')
              | regex_replace('^LABEL=', 'label-')
              | regex_replace('[^A-Za-z0-9_.-]', '_')) }}
      .done
  when: m.mkfs_once | default(false) | bool

- name: Check mkfs marker presence (mkfs_once)
  ansible.builtin.stat:
    path: "{{ _iscsi_mkfs_marker }}"
  register: _iscsi_mkfs_marker_stat
  when: m.mkfs_once | default(false) | bool

- name: Fail if mountpoint is already mounted but mkfs_once requested
  ansible.builtin.command: "findmnt -n {{ m.path }}"
  register: _iscsi_findmnt_before_mkfs
  changed_when: false
  failed_when: false
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists

- name: Refuse to mkfs when mountpoint is mounted
  ansible.builtin.fail:
    msg: "Refusing to mkfs {{ m.src }} because {{ m.path }} is already mounted ({{ _iscsi_findmnt_before_mkfs.stdout | default('') }})."
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists
    - _iscsi_findmnt_before_mkfs.rc == 0

- name: Resolve block device for mkfs (mkfs_once)
  ansible.builtin.command: >-
    {{ (m.src | regex_search('^UUID=') )
       | ternary('blkid -U ' ~ (m.src | regex_replace('^UUID=', '')),
                 (m.src | regex_search('^LABEL=') )
                 | ternary('blkid -L ' ~ (m.src | regex_replace('^LABEL=', '')),
                           'echo ' ~ (m.src))) }}
  register: _iscsi_mkfs_dev
  changed_when: false
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists

- name: Require resolved device to look like /dev/* (mkfs_once)
  ansible.builtin.assert:
    that:
      - (_iscsi_mkfs_dev.stdout | default('') | trim) is match('^/dev/')
    fail_msg: "Unable to resolve a /dev/* block device for mkfs from src={{ m.src }} (got: {{ _iscsi_mkfs_dev.stdout | default('') | trim }})."
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists

- name: Re-initialize filesystem (mkfs.ext4) (mkfs_once)
  ansible.builtin.command: "mkfs.ext4 -F {{ _iscsi_mkfs_dev.stdout | trim }}"
  changed_when: true
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists

- name: Write mkfs marker (mkfs_once)
  ansible.builtin.file:
    path: "{{ _iscsi_mkfs_marker }}"
    state: touch
    owner: root
    group: root
    mode: "0644"
  when:
    - m.mkfs_once | default(false) | bool
    - _iscsi_mkfs_marker_stat.stat.exists is not defined or not _iscsi_mkfs_marker_stat.stat.exists

- name: Mount {{ m.path }}
  ansible.builtin.mount:
    path: "{{ m.path }}"
    src: "{{ m.src }}"
    fstype: "{{ m.fstype | default('ext4') }}"
    opts: "{{ m.opts | default('_netdev,noatime') }}"
    state: mounted