added credit limit exceed check

app/Http/Controllers/BookingController.php

@@ -22,6 +22,7 @@ class BookingController extends Controller
 		$user = Auth::user();
         $bookings = Booking::select('id', 'created_at', 'status', 'rate', 'term', 'amount', 'bia', 'verification_status')
                                     ->where('user_id', $user->id)
+                                    ->orderby('updated_at','desc')
                                     ->paginate(10);
 
 
@@ -77,7 +78,8 @@ class BookingController extends Controller
 	public function adminIndex(){
 		$user = Auth::user(); 
 		$bookings = Booking::select('id', 'created_at', 'admin_status', 'rate', 'term', 'amount', 'bia', 'verification_status')
-		->get();
+        ->orderby('updated_at','desc')
+        ->get();
 
 			// reformat to fit frontend structure 
 			foreach ($bookings as $booking) {
@@ -524,6 +526,16 @@ class BookingController extends Controller
         $term = $request->input('term');
         $china_beneficiary = $request->input('china_beneficiary');
         $rates = Rate::orderby('updated_at','desc')->first();
+
+        $creditLimit = SettingCredit::orderby('updated_at','desc')->first();
+
+		if (!$creditLimit){
+			return response()->json("Credit limit not set, please contact admin", 405);
+		}
+
+        if($amount > $creditLimit->rmb_credit_limit){
+            return response()->json(["message" => "Exceed credit limit, please contact our sales team for larger quantitiy"], 400);
+        }
  
         // TODO : get marking 
         $marking = "123X";