Bloomberg Rate has changed their wrapper from span to div.
[fa-stable.git] / taxes / tax_calc.inc
index 1f00b8a095d93cf4fe765ddecd69de62d6917650..4c4b9f37c5a7ea047e6a4d908d3a3c7f5502c107 100644 (file)
@@ -1,45 +1,71 @@
 <?php
-
+/**********************************************************************
+    Copyright (C) FrontAccounting, LLC.
+       Released under the terms of the GNU General Public License, GPL, 
+       as published by the Free Software Foundation, either version 3 
+       of the License, or (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+    See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
+***********************************************************************/
 include_once($path_to_root . "/taxes/db/tax_groups_db.inc");
 include_once($path_to_root . "/taxes/db/tax_types_db.inc");
 include_once($path_to_root . "/taxes/db/item_tax_types_db.inc");
 
 //---------------------------------------------------------------------------------
 
-// returns the tax cost for a given item
+// returns the price of a given item minus any included taxes
+// for item $stock_id with line price $price,
+// with applicable tax rates $tax_group_array or group id $tax_group
 
-/*function get_tax_value_for_item($stock_id, $price, $tax_group)
+function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
 {
-       // if price is zero, then can't be taxed
+       // if price is zero, then can't be taxed !
        if ($price == 0)
                return 0;
-               
-       $ret_tax_array = get_tax_group_items_as_array($tax_group);                      
-               
+
+       if ($tax_included==0) return $price;
+       
+       // if array already read, then make a copy and use that
+       if ($tax_group_array)
+               $ret_tax_array = $tax_group_array;
+       else
+               $ret_tax_array = get_tax_group_items_as_array($tax_group);
+       
+       //print_r($ret_tax_array);
+
        $tax_array = get_taxes_for_item($stock_id, $ret_tax_array);
+       // if no exemptions or taxgroup is empty, then no included/excluded taxes
        if ($tax_array == null)
-               return 0;
-       
-       $tax_multiplier = 0;    
+               return $price;
 
-       // loop for all items
-       foreach ($tax_array as $taxitem) {
+       // to avoid rounding errors we have to just subtract taxes from tax_included price.
+       $tax_multiplier = 0;
+       foreach ($tax_array as $taxitem) 
+       {
                $tax_multiplier += $taxitem["rate"];
        }
-       
-       return $price * ($tax_multiplier / 100);        
-}*/
-
-//---------------------------------------------------------------------------------
 
-// returns the price of a given item minus any included taxes
-
-function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_group_array=null)
+       $tax = 0;
+       foreach ($tax_array as $taxitem)
+       {
+               $tax += round($price*$taxitem['rate']/(100+$tax_multiplier), user_price_dec());
+       }
+       return $price-$tax;
+}
+//
+//     Full price (incl. VAT) for item $stock_id with line price $price,
+//     with tax rates $tax_group_array or applicable group $tax_group
+//
+function get_full_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
 {
        // if price is zero, then can't be taxed !
        if ($price == 0)
                return 0;
 
+       if ($tax_included==1) return $price;
+
        // if array already read, then make a copy and use that
        if ($tax_group_array)
                $ret_tax_array = $tax_group_array;
@@ -53,22 +79,19 @@ function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_group_a
        if ($tax_array == null)
                return $price;
        
-       $tax_multiplier = 0;    
+       $tax_multiplier = 0;
 
        // loop for all items
 
        foreach ($tax_array as $taxitem) 
        {
-               if ($taxitem["included_in_price"])
                        $tax_multiplier += $taxitem["rate"];
        }
        
-       return $price / (1 + ($tax_multiplier / 100));  
+       return round($price * (1 + ($tax_multiplier / 100)),  user_price_dec());
 }
 
 //---------------------------------------------------------------------------------
-
-
 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate)
 
 function get_taxes_for_item($stock_id, $tax_group_items_array)
@@ -95,7 +118,7 @@ function get_taxes_for_item($stock_id, $tax_group_items_array)
        foreach ($tax_group_items_array as $tax_group_item) 
        { 
                
-               $skip = false;                  
+               $skip = false;
                
                // if it's in the exemptions, skip
                foreach ($item_tax_type_exemptions as $exemption) 
@@ -116,48 +139,84 @@ function get_taxes_for_item($stock_id, $tax_group_items_array)
        
        return $ret_tax_array;
 }
-
 //-----------------------------------------------------------------------------------
-
 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate, included_in_price, Value) 
 
-function get_tax_for_items($items, $prices, $shipping_cost, $tax_group)
+function get_tax_for_items($items, $prices, $shipping_cost, $tax_group, $tax_included=null, $tax_items_array=null)
 {
        // first create and set an array with all the tax types of the tax group
-       $ret_tax_array = get_tax_group_items_as_array($tax_group);
-       
+       if($tax_items_array!=null)
+         $ret_tax_array = $tax_items_array;
+       else
+         $ret_tax_array = get_tax_group_items_as_array($tax_group);
+
+       foreach($ret_tax_array as $k=>$t)
+               $ret_tax_array[$k]['Net'] = 0;
+
+       $dec = user_price_dec();
        // loop for all items
        for ($i = 0; $i < count($items); $i++)
        {
                $item_taxes = get_taxes_for_item($items[$i], $ret_tax_array);
                if ($item_taxes != null) 
                {
+                       $tax_multiplier = 0;
+                       foreach ($item_taxes as $taxitem) 
+                       {
+                               $tax_multiplier += $taxitem['rate'];
+                       }
                        foreach ($item_taxes as $item_tax) 
                        {
-                               $index = $item_tax['tax_type_id'];
-                               $ret_tax_array[$index]['Value'] += $prices[$i] * $item_tax['rate'] / 100;
+                               if ($item_tax['rate'] !== null) {
+                                       $index = $item_tax['tax_type_id'];
+                                       if ($tax_included == 1) {
+                                         $ret_tax_array[$index]['Value'] += round2($prices[$i]*$item_tax['rate']/(100+$tax_multiplier), $dec);
+                                         $ret_tax_array[$index]['Net'] += round2($prices[$i]*100/(100+$tax_multiplier), $dec);
+                                       } else {
+                                         $ret_tax_array[$index]['Value'] += ($prices[$i] * $item_tax['rate'] / 100);
+                                         $ret_tax_array[$index]['Net'] += $prices[$i];
+                                       }
+                               }
                        }
                }
        }
-       
+
        // add the shipping taxes, only if non-zero, and only if tax group taxes shipping
        if ($shipping_cost != 0) 
        {
-               $tax_group = get_tax_group($tax_group);
-               if ($tax_group['tax_shipping']
+               $item_taxes = get_shipping_tax_as_array();
+               if ($item_taxes != null
                {
-                       foreach ($ret_tax_array as $item_tax) 
+                       if ($tax_included == 1)
+                       {
+                               $tax_rate = 0;
+                               foreach ($item_taxes as $item_tax)
+                               {
+                                       $index = $item_tax['tax_type_id'];
+                                       if(isset($ret_tax_array[$index])) {
+                                               $tax_rate += $item_tax['rate'];
+                                       }
+                               }
+                               $shipping_net = round2($shipping_cost*100/(100+$tax_rate), $dec);
+                       }
+                       foreach ($item_taxes as $item_tax) 
                        {
                                $index = $item_tax['tax_type_id'];
-                               $ret_tax_array[$index]['Value'] += $shipping_cost * $item_tax['rate'] / 100;
+                               if ($item_tax['rate'] !== null && $ret_tax_array[$index]['rate'] !== null) {
+                                         if($tax_included==1) {
+                                           $ret_tax_array[$index]['Value'] += round2($shipping_cost*$item_tax['rate']/(100+$tax_rate), $dec);
+                                           $ret_tax_array[$index]['Net'] += $shipping_net;
+                                         } else {
+                                               $ret_tax_array[$index]['Value'] += ($shipping_cost * $item_tax['rate'] / 100);
+                                           $ret_tax_array[$index]['Net'] += $shipping_cost;
+                                         }
+                               }
                        }
                }
        }
-       
        //print_r($ret_tax_array);
 
        return $ret_tax_array;
 }
 
-
 ?>
\ No newline at end of file