fix: IndexError when an empty message is sent back

Author: srevinsaju

sugaroid/brain/fun.py

@@ -26,7 +26,13 @@ def process(self, statement, additional_response_selection_parameters=None):
         emotion = Emotion.neutral
         confidence = 0.05
         parsed = str(statement)
-        if "not" in parsed:
+        if not parsed.strip():
+            # it is an empty statement
+            selected_statement = SugaroidStatement("😌😌😌", chatbot=True)
+            selected_statement.confidence = 1
+            selected_statement.emotion = emotion
+            return selected_statement
+        elif "not" in parsed:
             # if you are not, who then is?
             suffix = " either. "
             prefix = ""

sugaroid/brain/have.py

@@ -17,7 +17,7 @@ class HaveAdapter(SugaroidLogicAdapter):
     """
 
     def can_process(self, statement: SugaroidStatement) -> bool:
-        return statement.words[0] == "have" and not statement.words[-1].endswith("?")
+        return len(statement.words) >= 1 and statement.words[0] == "have" and not statement.words[-1].endswith("?")
 
     def process(
         self,