Make commands async and improve error handling

handler/ux/commands.py

@@ -887,15 +887,19 @@ class IRCCommands(object):
         authed = True
         helptext = "Enable an account_id at a bank for use in Nordigen. Usage: nmapaccount <account_id>"
 
+        @staticmethod
+        def got_map_account(account_name, account_id, msg):
+            if not account_name:
+                msg(f"Failed to map the account")
+                return
+            msg(f"Mapped account ID {account_id} to {account_name}")
+
         @staticmethod
         def run(cmd, spl, length, authed, msg, agora, tx, ux):
             if length == 2:
                 account_id = spl[1]
-                account_name = tx.sinks.nordigen.map_account(account_id)
-                if not account_name:
-                    msg(f"Failed to map the account")
-                    return
-                msg(f"Mapped account ID {account_id} to {account_name}")
+                c = tx.sinks.nordigen.map_account(account_id)
+                c.addCallback(IRCCommands.nmapaccount.got_map_account, account_id, msg)
 
     class nunmapaccount(object):
         name = "nunmapaccount"