Add a format preview function

Author: kyb3r

core/utils.py

@@ -23,9 +23,22 @@ async def convert(self, ctx, argument):
         return Object(int(match.group(1)))
 
 
-def truncate(text: str) -> str:
-    return text[:47].strip() + '...' if len(text) > 50 else text
-
+def truncate(text: str, max: int=50) -> str:
+    return text[:max-3].strip() + '...' if len(text) > max else text
+
+def format_preview(messages):
+    messages = messages[:5]
+    out = ''
+    for message in messages: 
+        if message.get('type') in ('note', 'internal'):
+            continue
+        author = message['author']
+        content = message['content'].replace('\n', ' ')
+        name = author['name'] + '#' + str(author['discriminator'])
+        prefix = '[M]' if author['mod'] else '[R]'
+        out += truncate(f'`{prefix} {name}:` {content}', max=75) + '\n'
+    
+    return out or 'No Messages'
 
 def is_image_url(url: str, _=None) -> bool:
     return bool(parse_image_url(url))