Discord:// notification size limit - also includes the notification title

changedetectionio/notification.py

@@ -66,13 +66,20 @@ def process_notification(n_object, datastore):
                 if not 'avatar_url' in url:
                     url += k + 'avatar_url=https://raw.githubusercontent.com/dgtlmoon/changedetection.io/master/changedetectionio/static/images/avatar-256x256.png'
 
-                body = n_body[0:1800-len(n_title)-len(url)] if 'discord://' in url else n_body
+                payload_max_size = 1700
+                # Trim everything to a max of 1700 total chars (leave some for padding, control etc)
+                # Incase n_title > 1700
+                # basically trim back the body until the total size fits our threshold
+                # and trim off the n_title to fit always.
+                body_limit = max(0, payload_max_size - len(n_title))
+                body = n_body[0:body_limit] if 'discord://' in url else n_body
+
                 apobj.add(url)
 
                 apobj.notify(
-                title=n_title,
-                body=body,
-                body_format=n_format)
+                    title=n_title[0:payload_max_size],
+                    body=body,
+                    body_format=n_format)
 
                 apobj.clear()
 

changedetectionio/templates/_common_fields.jinja

@@ -13,7 +13,7 @@
                             <div class="pure-form-message-inline">
                               <ul>
                                 <li>Use <a target=_new href="https://github.com/caronc/apprise">AppRise URLs</a> for notification to just about any service! <i><a target=_new href="https://github.com/dgtlmoon/changedetection.io/wiki/Notification-configuration-notes">Please read the notification services wiki here for important configuration notes</a></i>.</li>
-                                <li><code>discord://</code> notifications are cut at 2,000 characters in length.</li>
+                                <li><code>discord://</code> only supports a maximum <strong>2,000 characters</strong> of notification text, including the title.</li>
                                 <li><code>tgram://</code> bots cant send messages to other bots, so you should specify chat ID of non-bot user.</li>
                                 <li>Go here for <a href="{{url_for('notification_logs')}}">notification debug logs</a></li>
                               </ul>