first

app/Support/SensitiveData.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Support;
+
+class SensitiveData
+{
+    public static function maskIc(?string $value): string
+    {
+        return self::mask($value, 4, 4);
+    }
+
+    public static function maskAccount(?string $value): string
+    {
+        return self::mask($value, 3, 4);
+    }
+
+    public static function maskPhone(?string $value): string
+    {
+        return self::mask($value, 3, 3);
+    }
+
+    public static function maskName(?string $value): string
+    {
+        $normalized = trim((string) $value);
+
+        if ($normalized === '') {
+            return '-';
+        }
+
+        $length = mb_strlen($normalized);
+        $visible = min(3, $length);
+
+        return mb_substr($normalized, 0, $visible).str_repeat('*', max(0, $length - $visible));
+    }
+
+    private static function mask(?string $value, int $prefix, int $suffix): string
+    {
+        $normalized = trim((string) $value);
+
+        if ($normalized === '') {
+            return '-';
+        }
+
+        $length = mb_strlen($normalized);
+
+        if ($length <= ($prefix + $suffix)) {
+            return str_repeat('*', $length);
+        }
+
+        return mb_substr($normalized, 0, $prefix)
+            .str_repeat('*', $length - $prefix - $suffix)
+            .mb_substr($normalized, -$suffix);
+    }
+}