---
- name: Install iSCSI dependencies
  ansible.builtin.package:
    name:
      - open-iscsi
      - util-linux
      - xfsprogs
    state: present
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Ensure iscsid enabled
  ansible.builtin.service:
    name: iscsid
    state: started
    enabled: true
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Check if k3s systemd unit exists
  ansible.builtin.stat:
    path: /etc/systemd/system/k3s.service
  register: _k3s_unit
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Check if k3s-agent systemd unit exists
  ansible.builtin.stat:
    path: /etc/systemd/system/k3s-agent.service
  register: _k3s_agent_unit
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Ensure k3s stops/restarts before open-iscsi (systemd drop-in)
  block:
    - name: Ensure k3s.service.d exists
      ansible.builtin.file:
        path: /etc/systemd/system/k3s.service.d
        state: directory
        mode: "0755"

    - name: Install k3s open-iscsi ordering drop-in
      ansible.builtin.copy:
        dest: /etc/systemd/system/k3s.service.d/open-iscsi.conf
        mode: "0644"
        content: |
          [Unit]
          Wants=open-iscsi.service
          After=open-iscsi.service
          PartOf=open-iscsi.service
      notify:
        - reload systemd
  when: _k3s_unit.stat.exists | default(false)
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Ensure k3s-agent stops/restarts before open-iscsi (systemd drop-in)
  block:
    - name: Ensure k3s-agent.service.d exists
      ansible.builtin.file:
        path: /etc/systemd/system/k3s-agent.service.d
        state: directory
        mode: "0755"

    - name: Install k3s-agent open-iscsi ordering drop-in
      ansible.builtin.copy:
        dest: /etc/systemd/system/k3s-agent.service.d/open-iscsi.conf
        mode: "0644"
        content: |
          [Unit]
          Wants=open-iscsi.service
          After=open-iscsi.service
          PartOf=open-iscsi.service
      notify:
        - reload systemd
  when: _k3s_agent_unit.stat.exists | default(false)
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Ensure open-iscsi systemd override directory exists
  ansible.builtin.file:
    path: /etc/systemd/system/open-iscsi.service.d
    state: directory
    mode: "0755"
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Install open-iscsi retry-on-boot override
  ansible.builtin.copy:
    dest: /etc/systemd/system/open-iscsi.service.d/retry-on-boot.conf
    mode: "0644"
    content: |
      [Unit]
      Wants=network-online.target iscsid.service
      After=network-online.target iscsid.service

      [Service]
      Restart=on-failure
      RestartSec=10s
      StartLimitIntervalSec=120
      StartLimitBurst=10
  notify:
    - reload systemd
    - restart open-iscsi
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Apply open-iscsi override immediately (if changed)
  ansible.builtin.meta: flush_handlers
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Ensure open-iscsi enabled
  ansible.builtin.systemd:
    name: open-iscsi
    enabled: true
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage

- name: Discover iSCSI targets
  ansible.builtin.command: >-
    iscsiadm -m discovery -t st -p {{ iscsi_portal }}
  register: _iscsi_discovery
  changed_when: false
  tags:
    - iscsi
    - iscsi_discovery
    - iscsi_login
    - iscsi_storage

- name: Configure and login iSCSI targets
  ansible.builtin.include_tasks: iscsi_target.yml
  loop: "{{ iscsi_targets | default([]) }}"
  loop_control:
    loop_var: t
    label: "{{ t.iqn | default('<unknown-iqn>') }}"
  tags:
    - iscsi
    - iscsi_login
    - iscsi_storage