fix: resolve receipt 404 and add save receipt pdf functionality

app/Http/Controllers/PagesController.php

@@ -250,6 +250,39 @@ class PagesController extends Controller
         return view('receiptpdf', $checkout_data);
     }
 
+    public function downloadReceiptPdf(Request $request)
+    {
+        $checkoutid = $request->checkout_id;
+        $checkout_final_results = Checkout::where('checkout_id', '=', $checkoutid)
+                                          ->first();
+        $bidder_num = $checkout_final_results->bidder_num;
+        $checkout_list_results = DB::select("SELECT
+      *, items.item_assigned_num, items.item_desc
+      FROM winning_bids
+      INNER JOIN items AS items
+      ON winning_bids.winning_item_num=items.iditems
+      WHERE winning_bidder_num = $bidder_num
+    ");
+        $checkout_info_results = DB::select("SELECT
+      winning_bids.*,
+      bidders.*,
+      sum(winning_cost) AS total_cost
+      FROM winning_bids
+      INNER JOIN bidders AS bidders
+      ON winning_bids.winning_bidder_num=bidders.idbidders
+      WHERE winning_bidder_num = $bidder_num
+      GROUP BY winning_bids.winning_bidder_num
+    ");
+        $checkout_data = [
+        'checkout_final_results' => $checkout_final_results,
+        'checkout_list_results' => $checkout_list_results,
+        'checkout_info_results' => $checkout_info_results
+        ];
+
+        $pdf = PDF::loadView('receiptpdf', $checkout_data);
+        return $pdf->download('receipt-'.$checkoutid.'.pdf');
+    }
+
     public function reprintReceipt(Request $reprint_receipt_req)
     {
         if (!$reprint_receipt_req->reprintbiddernum) {