---
- name: Install Java runtime (headless)
  ansible.builtin.apt:
    name: openjdk-21-jre-headless
    state: present
    update_cache: true

- name: Create JMRI system group
  ansible.builtin.group:
    name: "{{ jmri_group }}"
    state: present
    system: true

- name: Create JMRI service user
  ansible.builtin.user:
    name: "{{ jmri_user }}"
    group: "{{ jmri_group }}"
    home: "{{ jmri_home }}"
    shell: /usr/sbin/nologin
    system: true
    create_home: true
    state: present

- name: Add JMRI user to dialout group (serial device access)
  ansible.builtin.user:
    name: "{{ jmri_user }}"
    groups: dialout
    append: true

- name: Check if JMRI is already installed at correct version
  ansible.builtin.stat:
    path: "{{ jmri_install_dir }}/JmriFaceless"
  register: jmri_binary

- name: Download JMRI release archive
  ansible.builtin.get_url:
    url: "{{ jmri_download_url }}"
    dest: /tmp/JMRI-{{ jmri_version }}.tgz
    mode: '0644'
  when: not jmri_binary.stat.exists

- name: Create JMRI install directory
  ansible.builtin.file:
    path: "{{ jmri_install_dir }}"
    state: directory
    owner: "{{ jmri_user }}"
    group: "{{ jmri_group }}"
    mode: '0755'

- name: Extract JMRI archive
  ansible.builtin.unarchive:
    src: /tmp/JMRI-{{ jmri_version }}.tgz
    dest: "{{ jmri_install_dir }}"
    remote_src: true
    owner: "{{ jmri_user }}"
    group: "{{ jmri_group }}"
    extra_opts: ['--strip-components=1']
  when: not jmri_binary.stat.exists

- name: Restore JMRI config from backup
  ansible.builtin.copy:
    src: "{{ jmri_config_src }}/"
    dest: "{{ jmri_home }}/.jmri/"
    owner: "{{ jmri_user }}"
    group: "{{ jmri_group }}"
    mode: '0644'
    directory_mode: '0755'
  when: jmri_config_src | length > 0
  notify: Restart jmri

- name: Deploy JmriFaceless systemd unit
  ansible.builtin.template:
    src: jmri.service.j2
    dest: /etc/systemd/system/jmri.service
    owner: root
    group: root
    mode: '0644'
  notify:
    - Reload systemd
    - Restart jmri

- name: Enable and start JMRI service
  ansible.builtin.systemd:
    name: jmri
    enabled: true
    state: started
    daemon_reload: true