core (memory/encryption): set encrypted flag also for outgoing messages and put it in extra:

- `encrypted` flag is now put directly in extra, so that there is nothing to change when
  sending the message to bridge for frontends to be aware of it.
- this flag is now also set when markAsEncrypted is used, so frontend can display
  appropriate indicator to show that outgoing message is encrypted or not.

sat/core/xmpp.py

@@ -1183,8 +1183,8 @@ class SatMessageProtocol(xmppim.MessageProtocol):
             data["extra"]["delay_sender"] = data["delay_sender"]
         except KeyError:
             pass
-        if C.MESS_KEY_ENCRYPTION in data:
-            data["extra"]["encrypted"] = C.BOOL_TRUE
+        if self.client.encryption.isEncrypted(data):
+            data["extra"]["encrypted"] = True
         if data is not None:
             if self.parent.isMessagePrintable(data):
                 self.host.bridge.messageNew(

sat/memory/encryption.py

@@ -447,6 +447,7 @@ class EncryptionHandler:
                 f"encryption flag must not be set for groupchat if encryption algorithm "
                 f"({encryption['plugin'].name}) is directed!")
             mess_data[C.MESS_KEY_ENCRYPTION] = encryption
+            self.markAsEncrypted(mess_data)
 
     ## Misc ##
 
@@ -457,7 +458,7 @@ class EncryptionHandler:
         the plugin
         @param mess_data(dict): message data as used in post treat workflow
         """
-        mess_data[C.MESS_KEY_ENCRYPTED] = True
+        mess_data['extra'][C.MESS_KEY_ENCRYPTED] = True
         return mess_data
 
     def isEncryptionRequested(self, mess_data, namespace=None):
@@ -478,12 +479,12 @@ class EncryptionHandler:
         return plugin.namespace == namespace
 
     def isEncrypted(self, mess_data):
-        """Helper method to check if an incoming message has the e2e encrypted flag
+        """Helper method to check if a message has the e2e encrypted flag
 
         @param mess_data(dict): message data
         @return (bool): True if the encrypted flag is present
         """
-        return mess_data.get(C.MESS_KEY_ENCRYPTED, False)
+        return mess_data['extra'].get(C.MESS_KEY_ENCRYPTED, False)
 
 
     def markAsTrusted(self, mess_data):