vyos.base: T7122: add new Message() helper wrapper for print()

This will wrap the messages at 72 characters in the same way as Warning() and
DeprecationWarning() would do. We now have simple wrappers for it!

Example:
vyos@vyos# commit
[ pki ]

Updating configuration: "load-balancing haproxy service frontend ssl
certificate LE_cloud"

Add/replace automatically imported CA certificate for "LE_cloud"

2 files changed, 16 insertions, 10 deletions

diff --git a/python/vyos/base.py b/python/vyos/base.py
index ca96d96ce..3173ddc20 100644
--- a/python/vyos/base.py
+++ b/python/vyos/base.py
@@ -1,4 +1,4 @@
-# Copyright 2018-2022 VyOS maintainers and contributors <maintainers@vyos.io>
+# Copyright 2018-2025 VyOS maintainers and contributors <maintainers@vyos.io>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -15,8 +15,7 @@
 
 from textwrap import fill
 
-
-class BaseWarning:
+class UserMessage:
     def __init__(self, header, message, **kwargs):
         self.message = message
         self.kwargs = kwargs
@@ -33,7 +32,6 @@ class BaseWarning:
         messages = self.message.split('\n')
         isfirstmessage = True
         initial_indent = self.textinitindent
-        print('')
         for mes in messages:
             mes = fill(mes, initial_indent=initial_indent,
                        subsequent_indent=self.standardindent, **self.kwargs)
@@ -44,17 +42,24 @@ class BaseWarning:
         print('', flush=True)
 
 
+class Message():
+    def __init__(self, message, **kwargs):
+        self.Message = UserMessage('', message, **kwargs)
+        self.Message.print()
+
 class Warning():
     def __init__(self, message, **kwargs):
-        self.BaseWarn = BaseWarning('WARNING: ', message, **kwargs)
-        self.BaseWarn.print()
+        print('')
+        self.UserMessage = UserMessage('WARNING: ', message, **kwargs)
+        self.UserMessage.print()
 
 
 class DeprecationWarning():
     def __init__(self, message, **kwargs):
         # Reformat the message and trim it to 72 characters in length
-        self.BaseWarn = BaseWarning('DEPRECATION WARNING: ', message, **kwargs)
-        self.BaseWarn.print()
+        print('')
+        self.UserMessage = UserMessage('DEPRECATION WARNING: ', message, **kwargs)
+        self.UserMessage.print()
 
 
 class ConfigError(Exception):
diff --git a/src/conf_mode/pki.py b/src/conf_mode/pki.py
index 98922595c..6957248d2 100755
--- a/src/conf_mode/pki.py
+++ b/src/conf_mode/pki.py
@@ -19,6 +19,7 @@ import os
 from sys import argv
 from sys import exit
 
+from vyos.base import Message
 from vyos.config import Config
 from vyos.config import config_dict_merge
 from vyos.configdep import set_dependents
@@ -231,7 +232,7 @@ def get_config(config=None):
 
                         path = search['path']
                         path_str = ' '.join(path + found_path).replace('_','-')
-                        print(f'PKI: Updating config: {path_str} {item_name}')
+                        Message(f'Updating configuration: "{path_str} {item_name}"')
 
                         if path[0] == 'interfaces':
                             ifname = found_path[0]
@@ -528,7 +529,7 @@ def generate(pki):
             if not ca_cert_present:
                 tmp = dict_search_args(pki, 'ca', f'{autochain_prefix}{cert}', 'certificate')
                 if not bool(tmp) or tmp != cert_chain_base64:
-                    print(f'Adding/replacing automatically imported CA certificate for "{cert}" ...')
+                    Message(f'Add/replace automatically imported CA certificate for "{cert}"...')
                     add_cli_node(['pki', 'ca', f'{autochain_prefix}{cert}', 'certificate'], value=cert_chain_base64)
 
     return None