Implemented #11

src/service/reply_generator.py

@@ -1,5 +1,6 @@
+import random
 from src.config import config
-from src.utils import *
+from src.utils import strings_has_equal_letters, capitalize, random_element
 from src.entity.word import Word
 from src.entity.pair import Pair
 
@@ -9,7 +10,12 @@ class ReplyGenerator:
         pass
 
     def generate(self, message):
-        return self.generate_story(message, message.words, random.randint(0, 2) + 1)
+        result = self.generate_story(message, message.words, random.randint(0, 2) + 1)
+
+        if strings_has_equal_letters(result, ''.join(message.words)):
+            return ''
+
+        return result
 
     def generate_story(self, message, words, sentences_count):
         word_ids = Word.where_in('word', words).lists('id').all()

src/utils.py

@@ -1,10 +1,18 @@
 import random
+import re
 
 
 def capitalize(string):
     return string[:1].upper() + string[1:]
 
 
+def strings_has_equal_letters(str1, str2):
+    def clear_symbols(string):
+        return re.sub(r'[\W_]', '', string).lower()
+
+    return clear_symbols(str1) == clear_symbols(str2)
+
+
 def random_element(xlist):
     return random.choice(xlist) if len(xlist) > 0 else None