- include_vars: snmp_users.yml

- name: server | snmpd | install package
  package:
    name: "{{ snmpd_package }}"
    state: present

- name: server | snmpd | install sudoers file
  copy:
    dest: "/etc/sudoers.d/10-debian-snmp"
    src: "sudoers"
    owner: "root"
    group: "root"
    mode: "0660"
    validate: "visudo -cf %s"
  when: ansible_distribution in ["Debian", "Ubuntu"]

- name: server | snmpd | insert anchors to snmpd.conf
  blockinfile:
    path: "{{ snmpd_conf }}"
    marker: "# {mark} ANSIBLE MANAGED BLOCK" # not required. The marker line template. C({mark}) will be replaced with the values C(in marker_begin) (default="BEGIN") and C(marker_end) (default="END"). Using a custom marker without the C({mark}) variable may result in the block being repeatedly inserted on subsequent playbook runs.
    block: |
      ################################################################################
      # SECTION: custom settings

- name: server | snmpd | stop service
  service:
    name: "snmpd"
    state: stopped

- name: server | snmpd | setup monitoring user SNMPv3
  lineinfile:
    path: "{{ snmpd_user_file }}"
    line: "createuser {{ snmp_user }} {{ snmp_auth_proto }} {{ snmp_auth_pass }} {{ snmp_priv_proto }} {{ snmp_priv_pass }}"

- name: server | snmpd | setup ACLs
  lineinfile:
    path: "{{ snmpd_conf }}" # required. The file to modify. Before Ansible 2.3 this option was only usable as I(dest), I(destfile) and I(name).
    line: "rouser {{snmp_user }} authpriv"
    insertafter: "# SECTION: custom settings"

- name: server | snmpd | enable service on wireguard interface
  lineinfile:
    path: "{{ snmpd_conf }}"
    regexp: "^agentaddress.*$"
    state: present
    line: "agentaddress 127.0.0.1,{{ wg_local_ip | ipaddr('address') }},[::1]"
  when: wg_local_ip is defined

- name: server | snmpd | enable service on all interfaces
  lineinfile:
    path: "{{ snmpd_conf }}"
    regexp: "^agentaddress.*$"
    state: present
    line: "agentaddress udp:161,udp6:[::1]:161"
  when: wg_local_ip is not defined

- name: server | snmpd | copy distro script
  copy:
    dest: "/etc/snmp/distro/"
    src: "distro"
    mode: "0755"

- name: server | snmpd | get os-updates script
  get_url:
    url: "https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/osupdate"
    dest: "/etc/snmp/osupdate"
    mode: "0755"
    owner: "root"
    group: "root"

- name: server | snmpd | configure extends
  lineinfile:
    path: "{{ snmpd_conf }}"
    state: present
    line: "extend {{ item.service }} '{{ item.script }}'"
    insertafter: "# SECTION: custom settings"
  loop:
    - { service: "distro", script: "/usr/bin/sudo /etc/snmp/distro" }
    - { service: "osupdate", script:" /usr/bin/sudo /etc/snmp/osupdate"}
    - { service: "hardware", script: "/bin/cat /sys/devices/virtual/dmi/id/product_name" }
    - { service: "manufacturer", script: "/bin/cat /sys/devices/virtual/dmi/id/sys_vendor" }
    - { service: "serial", script: "/bin/cat /sys/devices/virtual/dmi/id/product_serial" }

- name: server | snmpd start service
  service:
    name: "snmpd"
    state: started