Update README.md and some fixes.

README.md

@@ -43,6 +43,18 @@ doUpdate: true # set it to true to enable updater
 domains: [] # subdomains that you want auto-update (Example: { "name": "www.example.com", "proxied": true })
 zone: null # zone of your domain name (such as example.com)
 ddnsBroadcastCode: code-here # IMPORTANT: Replace it that only you know
+maintenancePageURL: "" # Maintenance page url (set it to an existing URL if you would use maintenance mode)
+```
+
+For dns item, use this template:
+
+```
+{
+  "name": "www.example.com", # DNS name
+  "proxied": false, # Enable proxy (Enable this if you want to hide your server's real IP)
+  "type": "A", # or "CNAME", "AAA", "TEXT", "MX"
+  "allowMaintenance": true # Redirect to maintenancePage if maintenance mode is enabled.
+}
 ```
 
 Remember to restart the tool after you save the config file.

helper.py

@@ -92,7 +92,7 @@ class CloudflareHelper(Helper):
             )
             await message.channel.send(result)
 
-        @self.dc.handle_command("/cf:enable-maintenance", help="Enable maintenance mode")
+        @self.dc.handle_command("/cf:maintenance", help="Toggle maintenance mode")
         async def enable_maintenance(client, message):
             guild = getattr(message, "guild", None)
             if guild is None:
@@ -100,7 +100,14 @@ class CloudflareHelper(Helper):
                 return
 
             if self.is_allowed_broadcast_server(guild.name):
-                await message.channel.send(f"Updating DDNS...")
+                if not self.is_maintenance:
+                    self.is_maintenance = True
+                    self.update_ddns()
+                    await message.channel.send(f"Maintenance mode is enabled. Updating DDNS...")
+                else:
+                    self.is_maintenance = False
+                    self.update_ddns()
+                    await message.channel.send(f"Maintenance mode is disabled. Updating DDNS...")
             else:
                 await message.channel.send(f"Unsupported server: {guild.name}")