feat(wireguard): add util to print configs (#27)

tasks/deploy_wireguard.yml

@@ -107,4 +107,12 @@
     wait_timeout: "{{ infra_compose_wait_timeout }}"
   register: deploy_wireguard_services_output
 
+- name: Copy print-qr-codes util script into place
+  ansible.builtin.template:
+    src: print-qr-codes.sh.j2
+    dest: "{{ infra_wireguard_directory_path }}/print-qr-codes.sh"
+    owner: "{{ infra_wireguard_directory_owner }}"
+    group: "{{ infra_wireguard_directory_group }}"
+    mode: "0750"
+
 ...

templates/print-qr-codes.sh.j2

@@ -0,0 +1,17 @@
+#! /usr/bin/env bash
+
+# util to print QR codes for wireguard configs
+# requires 'jq' and 'qrencode' to be installed
+
+if ! command -v jq &> /dev/null; then
+    echo "Missing required package 'jq'"
+    exit 1
+elif ! command -v qrencode &> /dev/null; then
+    echo "Missing required package 'qrencode'"
+    exit 1
+fi
+
+for wgcfg in $(docker volume inspect {{ infra_wireguard_volume_name_config }} | jq '.[].Mountpoint' | sed 's/"//g')/peer_*/peer_*.conf; do
+    echo $(basename "$wgcfg")
+    qrencode -t ansiutf8 < "$wgcfg"
+done