From 65dac01c582c99e99b966122922de8504bfc36e6 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <ste.pigozzi@gmail.com>
Date: Thu, 5 Sep 2019 20:32:22 +0200
Subject: [PATCH] Display a user friendly message on syntax errors

---
 royalnet/bots/discord.py  | 3 +++
 royalnet/bots/telegram.py | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/royalnet/bots/discord.py b/royalnet/bots/discord.py
index 4b9660f7..776109e4 100644
--- a/royalnet/bots/discord.py
+++ b/royalnet/bots/discord.py
@@ -121,6 +121,9 @@ class DiscordBot(GenericBot):
                 with message.channel.typing():
                     try:
                         await command.run(CommandArgs(parameters), data=data)
+                    except InvalidInputError as e:
+                        await data.reply(f":warning: {' '.join(e.args)}\n"
+                                         f"Syntax: [c]/{command.name} {command.syntax}[/c]")
                     except Exception as e:
                         sentry_sdk.capture_exception(e)
                         error_message = f"{e.__class__.__name__}\n"
diff --git a/royalnet/bots/telegram.py b/royalnet/bots/telegram.py
index 70ccbc0b..dee2d610 100644
--- a/royalnet/bots/telegram.py
+++ b/royalnet/bots/telegram.py
@@ -174,6 +174,9 @@ class TelegramBot(GenericBot):
         # Run the command
         try:
             await command.run(CommandArgs(parameters), data)
+        except InvalidInputError as e:
+            await data.reply(f"⚠️ {' '.join(e.args)}\n"
+                             f"Syntax: [c]/{command.name} {command.syntax}[/c]")
         except Exception as e:
             sentry_sdk.capture_exception(e)
             error_message = f"⛔️ [b]{e.__class__.__name__}[/b]\n"