Do not regenerate client keys if already configured on server

ansible/playbooks/roles/wireguard_server/tasks/gather_current_config.yaml

@@ -0,0 +1,35 @@
+---
+- name: Check if config already exists 
+  stat:
+    path: "/etc/wireguard/{{ wg_interface }}.conf"
+  register: interface_configuration
+
+# - name: Fetching configuration file 
+#   ansible.builtin.fetch:
+#     src: "/etc/wireguard/{{ wg_interface }}.conf"
+#     dest: "/tmp/{{ wg_interface }}.conf"
+
+
+
+- name: Parse configuration
+  ansible.utils.cli_parse:
+    command: "cat /etc/wireguard/{{ wg_interface }}.conf "
+    parser:
+      name: ansible.netcommon.native
+      template_path: templates/wg_config_template.yaml
+    set_fact: existing_wg_config
+  when: interface_configuration.stat.exists
+  
+- name: Check registered peers
+  debug:
+    msg: "Found configs : {{ existing_wg_config }}"  
+
+
+- name: Updating client configs info
+  set_fact:
+    wg_peers: "{{ wg_peers | community.general.lists_mergeby([{'name':item.key,'publicKey':item.value.publicKey}] ,'name')}}"
+  loop: "{{ existing_wg_config | ansible.builtin.dict2items }}"
+
+- name: Log client configs info
+  debug:
+    msg: "Updated peers defintion : {{ wg_peers }}"  

ansible/playbooks/roles/wireguard_server/tasks/main.yaml

@@ -1,5 +1,6 @@
 ---
 - include_tasks: install_wireguard.yaml
+- include_tasks: gather_current_config.yaml
 - include_tasks: generate_server_keys.yaml
 - include_tasks: generate_client_configs.yaml
 - include_tasks: configure_server.yaml

ansible/playbooks/roles/wireguard_server/templates/wg_config_template.yaml

@@ -0,0 +1,13 @@
+---
+- example: "# Peer ID : fabio_test"
+  getval: '# Peer ID : (?P<peer_id>\S+)'
+  result:
+      "{{ peer_id }}":
+        name: "{{ peer_id }}"
+  shared: true
+
+- example: "PublicKey = 9a3tgXpF5CAOffbHZdW1QBEJgSLFnBDVbD1JaMPgzkM="
+  getval: 'PublicKey = (?P<publicKey>\S+)'
+  result:
+      "{{ peer_id }}":
+        publicKey: "{{ publicKey }}"