---
# ------------------------------------------------------------------------------
# FILE: roles/common/tasks/main.yml
# DESCRIPTION: Baseline configuration applied to all managed Ubuntu hosts.
#              Handles hostname, timezone, core packages, NTP, ansible user,
#              and optional LVM root volume expansion.
# ------------------------------------------------------------------------------

- name: Set hostname
  hostname:
    name: "{{ inventory_hostname | replace('_', '-') }}"

- name: Set timezone
  timezone:
    name: "{{ common_timezone }}"

- name: Update apt cache
  apt:
    update_cache: yes
    cache_valid_time: 3600

- name: Install base utility packages
  apt:
    name: "{{ common_packages }}"
    state: present

- name: Install chrony
  apt:
    name: chrony
    state: present

- name: Configure chrony to use sundial
  template:
    src: chrony.conf.j2
    dest: /etc/chrony/chrony.conf
    mode: '0644'
  notify: restart chrony

- name: Ensure chrony is enabled and running
  systemd:
    name: chrony
    state: started
    enabled: yes

- name: Ensure ansible user has passwordless sudo
  lineinfile:
    path: /etc/sudoers.d/{{ ansible_user }}
    line: "{{ ansible_user }} ALL=(ALL) NOPASSWD:ALL"
    create: yes
    mode: '0440'
    validate: 'visudo -cf %s'

# ------------------------------------------------------------------------------
# LVM root volume expansion
# Extends the root PV to the full disk size and grows the LV + filesystem.
# This codifies what was previously done manually after provisioning.
# Runs only when common_expand_root_lvm is true (default: true).
# Safe to re-run — pvresize and lvextend are idempotent when already at max.
# ------------------------------------------------------------------------------

- name: Expand root PV to full disk size
  command: pvresize {{ common_root_pv }}
  register: pvresize_result
  changed_when: "'changed' in pvresize_result.stdout or pvresize_result.rc == 0"
  when: common_expand_root_lvm | bool

- name: Extend root LV to 100% of free VG space
  lvol:
    vg: "{{ common_root_vg }}"
    lv: "{{ common_root_lv }}"
    size: +100%FREE
    resizefs: yes
  when:
    - common_expand_root_lvm | bool
  ignore_errors: yes
  # ignore_errors because lvextend returns non-zero when already at max size.
  # resizefs: yes handles the resize2fs call inline — no separate task needed.