feat(email): implement secure unsubscribe link generator and email helper integration

app/Utilities/EmailHelper.php

@@ -11,6 +11,8 @@ namespace WizdomNetworks\WizeWeb\Utilities;
 
 use PHPMailer\PHPMailer\PHPMailer;
 use PHPMailer\PHPMailer\Exception;
+use WizdomNetworks\WizeWeb\Services\TokenService;
+use WizdomNetworks\WizeWeb\Services\UnsubscribeTokenService;
 
 class EmailHelper
 {
@@ -154,4 +156,20 @@ class EmailHelper
             return '';
         }
     }
+    /**
+     * Generate a secure unsubscribe link for a subscriber email.
+     *
+     * @param string $email
+     * @return string
+     */
+    public static function buildUnsubscribeLink(string $email): string
+    {
+        $ts = time();
+        $tokenService = new TokenService();
+        $unsubscribeTokenService = new UnsubscribeTokenService($tokenService);
+
+        $sig = $unsubscribeTokenService->generate($email, $ts);
+
+        return $_ENV['APP_URL'] . "/unsubscribe?email=" . urlencode($email) . "&ts=$ts&sig=$sig";
+    }
 }