From 2ec13f5d50fc7885c6c1b0007fd998294d40927e Mon Sep 17 00:00:00 2001
From: Alexandr Chernyaev <bliz48rus@gmail.com>
Date: Sun, 24 Nov 2024 01:00:54 +0300
Subject: [PATCH] Fix spam detector handling of unreadable special characters

---
 app/Services/SpamDetector.php   | 4 ++++
 tests/Unit/SpamDetectorTest.php | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/app/Services/SpamDetector.php b/app/Services/SpamDetector.php
index 96a6a056..70c37171 100644
--- a/app/Services/SpamDetector.php
+++ b/app/Services/SpamDetector.php
@@ -105,6 +105,10 @@ public function hasTooManySpecialCharacters()
             ->squish()
             ->wordCount();
 
+        if($countWords === 0) {
+            return true;
+        }
+
         $diff = ($withSpecialCharacters - $withOutSpecialCharacters) / 2;
 
         // Proportion of special characters in the message
diff --git a/tests/Unit/SpamDetectorTest.php b/tests/Unit/SpamDetectorTest.php
index 22f9d8b7..4de6756d 100644
--- a/tests/Unit/SpamDetectorTest.php
+++ b/tests/Unit/SpamDetectorTest.php
@@ -144,4 +144,10 @@ public function testMessageOneSpecialCharacters(): void
         $spamDetector = new SpamDetector('🔥');
         $this->assertTrue($spamDetector->hasTooManySpecialCharacters());
     }
+
+    public function testMessageSpecialCharacters(): void
+    {
+        $spamDetector = new SpamDetector('✅ 🔤🔤🔤🔤 🔤🔤🔤🔤🔤🔤 ✅ 🔠🔠🔠🔠🔠 🔠 🔠🔠🔠🔠🔠🔠🔠 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥 🔥🔥🔥🔥🔥 ♦️🔺🔺♦️♦️ ♦️🔺🔺🔺 4️⃣2️⃣5️⃣💲 🔡 🔡🔡🔡🔡 ⚪️⚪️🔴⚪️⚪️🔴 🔴⚪️⚪️ 🔤🔤🔤🔤🔤🔤 🔤 🔤🔤');
+        $this->assertTrue($spamDetector->hasTooManySpecialCharacters());
+    }
 }