---
# tasks file for linstor_ha

# ---------------------------------------------------------
# STEP 1: CREATE HA RESOURCES (Executed ONLY on Node 1)
# ---------------------------------------------------------
- name: Create HA Resource Group and Spawn Database Volume
  ansible.builtin.shell: |
    set -o pipefail
    if ! linstor resource-group list | grep -q " linstor-db-grp "; then
      linstor resource-group create --storage-pool "{{ ha_pool }}" --place-count 3 --diskless-on-remaining true linstor-db-grp > /dev/null
      linstor resource-group drbd-options --auto-promote=no --quorum=majority \
      --on-suspended-primary-outdated=force-secondary --on-no-quorum=io-error --on-no-data-accessible=io-error linstor-db-grp > /dev/null
      linstor volume-group create linstor-db-grp > /dev/null
      linstor resource-group spawn-resources linstor-db-grp linstor_db 200M > /dev/null
      echo "changed"
    fi
  args:
    executable: /bin/bash
  register: linstor_ha_rg_create
  changed_when: "'changed' in linstor_ha_rg_create.stdout"
  when: inventory_hostname == groups['proxmox'][0]

- name: Wait for DRBD block device to appear locally
  ansible.builtin.wait_for:
    path: /dev/drbd/by-res/linstor_db/0
    state: present
    timeout: 60
  when: inventory_hostname == groups['proxmox'][0]

# ---------------------------------------------------------
# STEP 2: PREPARE ALL NODES
# ---------------------------------------------------------
- name: Install resource-agents
  ansible.builtin.apt:
    name: resource-agents
    state: present

- name: Ensure local Linstor Controller is stopped and disabled
  ansible.builtin.systemd:
    name: linstor-controller
    enabled: false
    state: stopped

- name: Deploy var-lib-linstor.mount unit
  ansible.builtin.copy:
    dest: /etc/systemd/system/var-lib-linstor.mount
    content: |
      [Unit]
      Description=Filesystem for the LINSTOR controller

      [Mount]
      What=/dev/drbd/by-res/linstor_db/0
      Where=/var/lib/linstor
    mode: '0644'

- name: Ensure drbd-reactor directory exists
  ansible.builtin.file:
    path: /etc/drbd-reactor.d
    state: directory
    mode: '0755'

- name: Deploy DRBD Reactor TOML config
  ansible.builtin.template:
    src: linstor_db.toml.j2
    dest: /etc/drbd-reactor.d/linstor_db.toml
    mode: '0644'
  notify: Reload drbd-reactor

# Notice how the stat task is gone, replaced by 'creates' and 'removes'
- name: Move existing local database to .orig safely
  ansible.builtin.command: mv /var/lib/linstor /var/lib/linstor.orig
  args:
    creates: /var/lib/linstor.orig
    removes: /var/lib/linstor

- name: Create empty mount point and set immutable flag (+i)
  ansible.builtin.file:
    path: /var/lib/linstor
    state: directory
    mode: '0755'
    attributes: '+i'

- name: Ensure Satellite Override directory exists
  ansible.builtin.file:
    path: /etc/systemd/system/linstor-satellite.service.d
    state: directory
    mode: '0755'

- name: Deploy Satellite Keep-Resource Override
  ansible.builtin.copy:
    dest: /etc/systemd/system/linstor-satellite.service.d/override.conf
    content: |
      [Service]
      Environment=LS_KEEP_RES=linstor_db
    mode: '0644'

- name: Reload daemon and restart Satellite
  ansible.builtin.systemd:
    daemon_reload: true
    name: linstor-satellite
    state: restarted

# ---------------------------------------------------------
# STEP 3: FORMAT & MIGRATE DB (Executed ONLY on Node 1)
# ---------------------------------------------------------
- name: Format HA Volume and Migrate Database
  ansible.builtin.shell: |
    set -o pipefail
    if ! blkid /dev/drbd/by-res/linstor_db/0 | grep -q "ext4"; then
      drbdadm primary linstor_db
      mkfs.ext4 /dev/drbd/by-res/linstor_db/0 > /dev/null

      chattr -i /var/lib/linstor
      mount /dev/drbd/by-res/linstor_db/0 /var/lib/linstor
      cp -a /var/lib/linstor.orig/* /var/lib/linstor/
      umount /var/lib/linstor
      chattr +i /var/lib/linstor
      drbdadm secondary linstor_db
      echo "changed"
    fi
  args:
    executable: /bin/bash
  register: linstor_ha_migrate
  changed_when: "'changed' in linstor_ha_migrate.stdout"
  when: inventory_hostname == groups['proxmox'][0]

# ---------------------------------------------------------
# STEP 4: ACTIVATE HA REACTOR
# ---------------------------------------------------------
- name: Enable and start DRBD Reactor
  ansible.builtin.systemd:
    name: drbd-reactor
    enabled: true
    state: started