---
# The mirror image of present.yml. Worth having as a real code path rather than a
# one-off ssh session: musicdolphin had LMS running because some earlier provisioning
# put it there, no playbook has installed it since, and nothing on the network used
# it - every squeezelite in the fleet points at `pi_squeezelite_squeezeserver`
# (192.168.178.80, the server), not at the pi it happens to be running on. On a 2 GB Pi
# that is also driving a kiosk browser, a stray Perl daemon holding ~30 MB resident and
# ~47 MB of swap is worth reclaiming.

- name: Check whether the Logitech Media Server unit is there at all
  ansible.builtin.stat:
    path: /lib/systemd/system/logitechmediaserver.service
  register: pi_squeezeserver_unit

- name: Stop and disable the Logitech Media Server
  # Before the package goes, so systemd is told rather than left holding a unit file
  # that vanishes underneath it.
  ansible.builtin.systemd:
    name: logitechmediaserver
    state: stopped
    enabled: false
  when: pi_squeezeserver_unit.stat.exists

- name: Purge the Logitech Media Server package
  ansible.builtin.apt:
    name: logitechmediaserver
    state: absent
    purge: true
    autoremove: true

- name: Drop the Logitech Media Server from sysdweb
  # Same marker pi_sysdweb writes, so this removes exactly the block that role added.
  ansible.builtin.blockinfile:
    path: /etc/sysdweb.conf
    marker: "# {mark} ansible managed for logitechmediaserver"
    state: absent
  notify: Restart sysdweb after dropping the LMS entry

- name: Undo the port 80 -> 9000 redirect the install added
  ansible.builtin.iptables:
    table: nat
    chain: PREROUTING
    in_interface: eth0
    protocol: tcp
    match: tcp
    destination_port: "80"
    jump: REDIRECT
    to_ports: "9000"
    comment: Redirect web traffic to port 9000
    state: absent

- name: Remove the server's database and logs
  # apt purge takes /usr/share/squeezeboxserver (118 MB) with it but leaves these. They
  # are a scan cache and a log of a server nobody talked to.
  ansible.builtin.file:
    path: "{{ item }}"
    state: absent
  loop:
    - /var/lib/squeezeboxserver
    - /var/log/squeezeboxserver