From 8e9988917478db8e2c2b6cda8ac930d2dc72cda2 Mon Sep 17 00:00:00 2001
From: Steve Ireland <stevei@ruledomain.com>
Date: Sat, 12 Sep 2020 20:58:25 -0400
Subject: [PATCH] On document reprint retrieve the taxes originally applied to
 the reprinted document.

---
 application/controllers/Sales.php |  2 +-
 application/libraries/Tax_lib.php | 12 ++++++++++--
 application/models/Sale.php       | 14 ++++++++++++++
 3 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/application/controllers/Sales.php b/application/controllers/Sales.php
index adb832439..e0e0418e5 100644
--- a/application/controllers/Sales.php
+++ b/application/controllers/Sales.php
@@ -910,7 +910,7 @@ class Sales extends Secure_Controller
 		$data['payments'] = $this->sale_lib->get_payments();
 		$data['selected_payment_type'] = $this->sale_lib->get_payment_type();
 
-		$tax_details = $this->tax_lib->get_taxes($data['cart']);
+		$tax_details = $this->tax_lib->get_taxes($data['cart'], $sale_id);
 		$data['taxes'] = $this->Sale->get_sales_taxes($sale_id);
 		$data['discount'] = $this->sale_lib->get_discount();
 		$data['transaction_time'] = to_datetime(strtotime($sale_info['sale_time']));
diff --git a/application/libraries/Tax_lib.php b/application/libraries/Tax_lib.php
index 248bfd654..9e8e2516e 100644
--- a/application/libraries/Tax_lib.php
+++ b/application/libraries/Tax_lib.php
@@ -52,7 +52,7 @@ class Tax_lib
 	/**
 	 * Compute taxes for all items in the cart
 	 */
-	public function get_taxes(&$cart)
+	public function get_taxes(&$cart, $sale_id = -1)
 	{
 		$register_mode = $this->CI->sale_lib->get_mode();
 		$tax_decimals = tax_decimals();
@@ -72,7 +72,15 @@ class Tax_lib
 				{
 					// Start of current Base System tax calculations
 
-					$tax_info = $this->CI->Item_taxes->get_info($item['item_id']);
+					if($sale_id == -1)
+					{
+						$tax_info = $this->CI->Item_taxes->get_info($item['item_id']);
+					}
+					else
+					{
+						$tax_info = $this->CI->Sale->get_sales_item_taxes($sale_id, $item['item_id']);
+
+					}
 					$tax_group_sequence = 0;
 					$cascade_level = 0;
 					$cascade_basis_level = 0;
diff --git a/application/models/Sale.php b/application/models/Sale.php
index ab18b8125..a15c79c8d 100644
--- a/application/models/Sale.php
+++ b/application/models/Sale.php
@@ -806,6 +806,20 @@ class Sale extends CI_Model
 		return $query->result_array();
 	}
 
+	/**
+	 * Return the taxes applied to a sale for a particular item
+	 */
+	public function get_sales_item_taxes($sale_id, $item_id)
+	{
+		$this->db->select('item_id, name, percent');
+		$this->db->from('sales_items_taxes');
+		$this->db->where('sale_id',$sale_id);
+		$this->db->where('item_id',$item_id);
+
+		//return an array of taxes for an item
+		return $this->db->get()->result_array();
+	}
+
 	/**
 	 * Deletes list of sales
 	 */