move from PHP to VUE, improved Certificate listning

APP/openvpn_api_v3.py

@@ -26,7 +26,9 @@ class OpenVPNAPI:
         self.config = configparser.ConfigParser()
         self.config.read(config_file)
         self.certificates_path = self.config.get('certificates', 'certificates_path', fallback='/etc/openvpn/certs')
+        self.certificates_path = self.config.get('certificates', 'certificates_path', fallback='/etc/openvpn/certs')
         self.cert_extensions = self.config.get('certificates', 'certificate_extensions', fallback='crt,pem,key').split(',')
+        self._cert_cache = {} # Cache structure: {filepath: {'mtime': float, 'data': dict}}
     
     def get_db_connection(self):
         """Get a database connection"""
@@ -90,13 +92,42 @@ class OpenVPNAPI:
     def get_certificates_info(self):
         cert_path = Path(self.certificates_path)
         if not cert_path.exists(): return []
+        
         cert_files = []
         for ext in self.cert_extensions:
             cert_files.extend(cert_path.rglob(f'*.{ext.strip()}'))
+            
+        current_valid_files = set()
         cert_data = []
-        for cert_file in cert_files:
-            data = self.extract_cert_info(str(cert_file))
-            if data: cert_data.append(data)
+        
+        for cert_file_path in cert_files:
+            cert_file = str(cert_file_path)
+            current_valid_files.add(cert_file)
+            
+            try:
+                mtime = os.path.getmtime(cert_file)
+                
+                # Check cache
+                cached = self._cert_cache.get(cert_file)
+                if cached and cached['mtime'] == mtime:
+                    cert_data.append(cached['data'])
+                else:
+                    # Parse and update cache
+                    parsed_data = self.extract_cert_info(cert_file)
+                    if parsed_data:
+                        self._cert_cache[cert_file] = {
+                            'mtime': mtime,
+                            'data': parsed_data
+                        }
+                        cert_data.append(parsed_data)
+            except OSError:
+                continue
+
+        # Prune cache for deleted files
+        for cached_file in list(self._cert_cache.keys()):
+            if cached_file not in current_valid_files:
+                del self._cert_cache[cached_file]
+                
         return cert_data
     # -----------------------------------------------------------