---
- name: Assert Debian-based distribution
  ansible.builtin.assert:
    that:
      - ansible_os_family == 'Debian'
    fail_msg: "ansible-role-librenms only supports Debian-based distributions"

- name: Install LibreNMS system dependencies
  ansible.builtin.apt:
    name:
      - acl
      - curl
      - fping
      - git
      - graphviz
      - imagemagick
      - mariadb-client
      - mtr-tiny
      - nginx-light
      - nmap
      - "php{{ librenms_php_version }}-cli"
      - "php{{ librenms_php_version }}-curl"
      - "php{{ librenms_php_version }}-fpm"
      - "php{{ librenms_php_version }}-gd"
      - "php{{ librenms_php_version }}-gmp"
      - "php{{ librenms_php_version }}-mbstring"
      - "php{{ librenms_php_version }}-mysql"
      - "php{{ librenms_php_version }}-snmp"
      - "php{{ librenms_php_version }}-xml"
      - "php{{ librenms_php_version }}-zip"
      - "php{{ librenms_php_version }}-bcmath"
      - "php{{ librenms_php_version }}-ldap"
      - "php{{ librenms_php_version }}-sockets"
      - python3
      - python3-dotenv
      - python3-pymysql
      - python3-redis
      - python3-setuptools
      - python3-systemd
      - rrdtool
      - snmp
      - snmpd
      - unzip
      - whois
    state: present
    update_cache: true
  become: true

- name: Install Composer
  ansible.builtin.shell:
    cmd: >
      curl -sS https://getcomposer.org/installer
      | php -- --install-dir=/usr/local/bin --filename=composer
    creates: /usr/local/bin/composer
  become: true

- name: Get LibreNMS release info from GitHub
  ansible.builtin.uri:
    url: >-
      {{ 'https://api.github.com/repos/librenms/librenms/releases/latest'
         if librenms_version == ''
         else 'https://api.github.com/repos/librenms/librenms/releases/tags/' + librenms_version }}
    headers:
      Accept: "application/vnd.github.v3+json"
    return_content: true
  register: _librenms_release

- name: Set LibreNMS version tag fact
  ansible.builtin.set_fact:
    _librenms_version_tag: "{{ _librenms_release.json.tag_name }}"

- name: Read installed version
  ansible.builtin.slurp:
    src: "{{ librenms_install_dir }}/.version"
  register: _librenms_installed_raw
  ignore_errors: true
  become: true

- name: Set installed version fact
  ansible.builtin.set_fact:
    _librenms_installed_version: >-
      {{ (_librenms_installed_raw.content | b64decode | trim)
         if _librenms_installed_raw is not failed else '' }}

- name: Install or upgrade LibreNMS
  when: _librenms_installed_version != _librenms_version_tag
  block:
    - name: Download LibreNMS source archive
      ansible.builtin.get_url:
        url: "https://github.com/librenms/librenms/archive/refs/tags/{{ _librenms_version_tag }}.tar.gz"
        dest: /tmp/librenms.tar.gz
        mode: '0644'

    - name: Create LibreNMS installation directory
      ansible.builtin.file:
        path: "{{ librenms_install_dir }}"
        state: directory
        owner: "{{ librenms_user }}"
        group: "{{ librenms_group }}"
        mode: '0771'
      become: true

    - name: Extract LibreNMS archive
      ansible.builtin.unarchive:
        src: /tmp/librenms.tar.gz
        dest: "{{ librenms_install_dir }}"
        remote_src: true
        extra_opts: [--strip-components=1]
        owner: "{{ librenms_user }}"
        group: "{{ librenms_group }}"
      become: true

    - name: Install PHP dependencies via Composer
      ansible.builtin.command:
        cmd: /usr/local/bin/composer install --no-dev --no-interaction
        chdir: "{{ librenms_install_dir }}"
      become: true
      become_user: "{{ librenms_user }}"

    - name: Write installed version file
      ansible.builtin.copy:
        content: "{{ _librenms_version_tag }}"
        dest: "{{ librenms_install_dir }}/.version"
        owner: "{{ librenms_user }}"
        group: "{{ librenms_group }}"
        mode: '0644'
      become: true

    - name: Remove downloaded archive
      ansible.builtin.file:
        path: /tmp/librenms.tar.gz
        state: absent

- name: Set ACL on LibreNMS directories
  ansible.builtin.command:
    cmd: "{{ item }}"
  become: true
  changed_when: true
  loop:
    - "setfacl -d -m g::rwx {{ librenms_install_dir }}/rrd {{ librenms_install_dir }}/logs {{ librenms_install_dir }}/bootstrap/cache {{ librenms_install_dir }}/storage"
    - "setfacl -R -m g::rwx {{ librenms_install_dir }}/rrd {{ librenms_install_dir }}/logs {{ librenms_install_dir }}/bootstrap/cache {{ librenms_install_dir }}/storage"

- name: Add librenms cron job
  ansible.builtin.copy:
    src: "{{ librenms_install_dir }}/dist/librenms.cron"
    dest: /etc/cron.d/librenms
    remote_src: true
    owner: root
    group: root
    mode: '0644'
  become: true

- name: Install LibreNMS logrotate config
  ansible.builtin.copy:
    src: "{{ librenms_install_dir }}/misc/librenms.logrotate"
    dest: /etc/logrotate.d/librenms
    remote_src: true
    owner: root
    group: root
    mode: '0644'
  become: true

- name: Install LibreNMS systemd dispatcher service
  ansible.builtin.copy:
    src: "{{ librenms_install_dir }}/dist/librenms.service"
    dest: /etc/systemd/system/librenms.service
    remote_src: true
    owner: root
    group: root
    mode: '0644'
  become: true

- name: Install LibreNMS systemd dispatcher socket
  ansible.builtin.copy:
    src: "{{ librenms_install_dir }}/dist/librenms.socket"
    dest: /etc/systemd/system/librenms.socket
    remote_src: true
    owner: root
    group: root
    mode: '0644'
  become: true
  ignore_errors: true

- name: Enable LibreNMS dispatcher service
  ansible.builtin.systemd:
    name: librenms
    enabled: "{{ librenms_service_enabled }}"
    state: "{{ librenms_service_state }}"
    daemon_reload: true
  become: true