# wireguard ~~ roles/wireguard/tasks/main.yml
# create keys and configuration for wireguard hosts

---

- name: generate dynamic facts
  include: set_facts.yml

- name: check keys on local disk
  stat:
    path: "{{ wg_host_keys }}"
  register: stat_host_keys
  delegate_to: localhost

- name: generate host keys
  shell: |
    umask 077
    wg genkey | tee "{{ wg_host_keys }}" | wg pubkey >> "{{ wg_host_keys }}"
  args:
    chdir: "{{ wg_dir }}"
  when: not stat_host_keys.stat.exists or force is defined and force
  delegate_to: localhost

- name: create wireguard dir on remote host
  file:
    path: /etc/wireguard
    owner: "{{ user_root }}"
    group: "{{ group_root }}"
    mode: 0700
    state: directory
  ignore_unreachable: true

- name: generate client configuration
  template:
    src: host.conf.j2
    dest: "{{ item.path }}"
    mode: 0600
  when: ansible_host != global.dcontroller
  delegate_to: "{{ item.name }}"
  loop:
    - { name: "{{ ansible_host }}", path: /etc/wireguard/dcontroller.conf }
    - { name: localhost, path: "{{ wg_dir }}/{{ ansible_host }}.conf" }
  ignore_unreachable: true

- name: generate server configuration
  template:
    src: dcontroller.conf.j2
    dest: "{{ item.path }}"
    mode: "0600"
  when: ansible_host == global.dcontroller
  delegate_to: "{{ item.name }}"
  loop:
    - { name: "{{ ansible_host }}", path: /etc/wireguard/dcontroller.conf }
    - { name: localhost, path: "{{ wg_dir }}/{{ ansible_host }}.conf" }

- name: generate server interface
  template:
    src: templates/hostname.j2
    dest: /etc/hostname.tun0
  when: ansible_host == global.dcontroller