feat(api): add endpoint to get telegram backup interval

core/cli_api.py

@@ -14,6 +14,7 @@ CONFIG_FILE = '/etc/hysteria/config.json'
 CONFIG_ENV_FILE = '/etc/hysteria/.configs.env'
 WEBPANEL_ENV_FILE = '/etc/hysteria/core/scripts/webpanel/.env'
 NORMALSUB_ENV_FILE = '/etc/hysteria/core/scripts/normalsub/.env'
+TELEGRAM_ENV_FILE = '/etc/hysteria/core/scripts/telegrambot/.env'
 NODES_JSON_PATH = "/etc/hysteria/nodes.json"
 
 
@@ -581,6 +582,26 @@ def stop_telegram_bot():
     '''Stops the Telegram bot.'''
     run_cmd(['python3', Command.INSTALL_TELEGRAMBOT.value, 'stop'])
 
+def get_telegram_bot_backup_interval() -> int | None:
+    '''Retrievels the current BACKUP_INTERVAL_HOUR for the Telegram Bot service from its .env file.'''
+    try:
+        if not os.path.exists(TELEGRAM_ENV_FILE):
+            return None 
+        
+        env_vars = dotenv_values(TELEGRAM_ENV_FILE)
+        interval_str = env_vars.get('BACKUP_INTERVAL_HOUR')
+        
+        if interval_str:
+            try:
+                return int(float(interval_str))
+            except (ValueError, TypeError):
+                return None
+        
+        return None
+    except Exception as e:
+        print(f"Error reading Telegram Bot .env file: {e}")
+        return None
+
 def set_telegram_bot_backup_interval(backup_interval: int):
     '''Sets the backup interval for the Telegram bot.'''
     if backup_interval is None: