create nad update gadai table migration and add services class for one percent

app/Services/OnePercentServices.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Services;
+
+
+
+class OnePercentServices
+{
+
+    protected $maks_margin = 80;
+    protected $one_percent = 1;
+
+    private function kiraanUjrah(float $nilaimarhun = 0.0,float $kadarujrah = 0.0,float $margin = 0.0){
+        
+        //periksa adakah kadar ujrah ini diberi percentage
+        if($kadarujrah >= 1){
+            return;
+        }
+
+        $ujrah = ($kadarujrah/100) * $nilaimarhun;
+        $formula_margin = ($this->maks_margin - $margin) / $this->maks_margin;
+        $ujrah_margin = $formula_margin * $kadarujrah;
+        $rebate_ujrah = $nilaimarhun*($ujrah_margin/100);
+        $ujrah_sebenar = $ujrah - $rebate_ujrah;
+
+        return $ujrah_sebenar;
+    }
+
+    private function kiraanOnePercent(float $pembiayaan = 0.0){
+
+        //periksa adakah pembiayaan adalah null atau kosong.
+        if($pembiayaan == 0 || $pembiayaan == null)
+            return;
+        
+            $onepercent = ($this->one_percent/100) * $pembiayaan;
+
+
+        return $onepercent;
+    }
+
+    public function kiraanKeuntunganSebenar(float $pembiayaan = 0.0,float $nilaimarhun = 0.0,float $kadarujrah = 0.0,float $margin = 0.0){
+
+        $onepercent = $this->kiraanOnePercent($pembiayaan);
+        $ujrah_sebenar = $this->kiraanUjrah($nilaimarhun,$kadarujrah,$margin);
+
+        $keuntungan = $onepercent + $ujrah_sebenar;
+
+        return ['keuntungan' => $keuntungan,'onepercent' => $onepercent, 'ujrah' => $ujrah_sebenar];
+    }
+}