#75 - fix data leak to ui-avatars (#79)

* #75 - fix data leak to ui-avatars

* #75 - ecs fix

* #75 - new colors

* #75 - change font color

* #75 - ecs fix

* #75 - change colors order

* #75 - fix

* #75 - fix

* #75 - ecs fix

Co-authored-by: EwelinaLasowy <ewelina.lasowy@blumilk.pl>

app/Eloquent/Helpers/ColorGenerator.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Eloquent\Helpers;
+
+class ColorGenerator
+{
+    public static function generate(string $text): string
+    {
+        $colors = config("colors");
+        $hash = static::calculateHash($text);
+
+        $index = $hash - count($colors) * floor($hash / count($colors));
+
+        return $colors[$index];
+    }
+
+    protected static function calculateHash(string $text): int
+    {
+        $hash = 0;
+
+        if (empty($text)) {
+            return $hash;
+        }
+
+        for ($i = 0; $i < mb_strlen($text); $i++) {
+            $hash = abs((int)(($hash << 2) - $hash) + mb_ord($text[$i]));
+        }
+
+        return $hash;
+    }
+}

app/Eloquent/Models/User.php

@@ -16,6 +16,7 @@ use Illuminate\Support\Collection;
 use Rackbeat\UIAvatars\HasAvatar;
 use Toby\Domain\Enums\EmploymentForm;
 use Toby\Domain\Enums\Role;
+use Toby\Eloquent\Helpers\ColorGenerator;
 
 /**
  * @property int $id
@@ -84,10 +85,8 @@ class User extends Authenticatable
 
     public function getAvatar(): string
     {
-        $colors = config("colors");
-
         return $this->getAvatarGenerator()
-            ->backgroundColor($colors[strlen($this->fullname) % count($colors)])
+            ->backgroundColor(ColorGenerator::generate($this->fullName))
             ->image();
     }
 
@@ -101,9 +100,9 @@ class User extends Authenticatable
         return $this->role === $role;
     }
 
-    protected function getAvatarNameKey(): string
+    protected function getAvatarName(): string
     {
-        return "fullName";
+        return mb_substr($this->first_name, 0, 1) . mb_substr($this->last_name, 0, 1);
     }
 
     protected static function newFactory(): UserFactory