Security sql statements update against sql injection attacks.
[fa-stable.git] / taxes / tax_calc.inc
index 1f00b8a095d93cf4fe765ddecd69de62d6917650..7107cdca7a75c8f6732e533231faeda6c84cc92e 100644 (file)
@@ -1,45 +1,69 @@
 <?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;
+               return $price;
        
        $tax_multiplier = 0;    
 
        // loop for all items
-       foreach ($tax_array as $taxitem) {
-               $tax_multiplier += $taxitem["rate"];
+
+       foreach ($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, $tax_group_array=null)
+       return round($price / (1 + ($tax_multiplier / 100)),  user_price_dec());
+}
+//
+//     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 = $tax_group_array;
@@ -59,16 +83,13 @@ function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_group_a
 
        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, $tax_group_items_array)
@@ -116,26 +137,41 @@ function get_taxes_for_item($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;
+
        // 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) 
                {
                        foreach ($item_taxes as $item_tax) 
                        {
                                $index = $item_tax['tax_type_id'];
-                               $ret_tax_array[$index]['Value'] += $prices[$i] * $item_tax['rate'] / 100;
+                               if($tax_included==1) {// 2008-11-26 Joe Hunt Taxes are stored without roundings
+                                 //$ret_tax_array[$index]['Value'] += round($prices[$i] * $item_tax['rate'] 
+                                 //    / ($item_tax['rate'] + 100),  user_price_dec());
+                                 $ret_tax_array[$index]['Value'] += ($prices[$i] * $item_tax['rate'] / ($item_tax['rate'] + 100));
+                                 $ret_tax_array[$index]['Net'] += ($prices[$i] * 100 / ($item_tax['rate'] + 100));
+                               } else {
+                                 //$ret_tax_array[$index]['Value'] += 
+                                 //    round($prices[$i] * $item_tax['rate'] / 100,  user_price_dec());
+                                 $ret_tax_array[$index]['Value'] += ($prices[$i] * $item_tax['rate'] / 100);
+                                 $ret_tax_array[$index]['Net'] += $prices[$i];
+                               }
                        }
                }
        }
@@ -143,13 +179,25 @@ function get_tax_for_items($items, $prices, $shipping_cost, $tax_group)
        // add the shipping taxes, only if non-zero, and only if tax group taxes shipping
        if ($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 $item_tax) 
+                       foreach ($item_taxes as $item_tax) 
                        {
                                $index = $item_tax['tax_type_id'];
-                               $ret_tax_array[$index]['Value'] += $shipping_cost * $item_tax['rate'] / 100;
+                               if(isset($ret_tax_array[$index])) {
+                                 if($tax_included==1) {// 2008-11-26 Joe Hunt Taxes are stored without roundings
+                                       //$ret_tax_array[$index]['Value'] += round($shipping_cost * $item_tax['rate'] 
+                                       //  / ($item_tax['rate'] + 100),  user_price_dec());
+                                       $ret_tax_array[$index]['Value'] += ($shipping_cost * $item_tax['rate'] / ($item_tax['rate'] + 100));
+                                   $ret_tax_array[$index]['Net'] += ($shipping_cost * 100 / ($item_tax['rate'] + 100));
+                                 } else {
+                                       //$ret_tax_array[$index]['Value'] += 
+                                       //  round($shipping_cost * $item_tax['rate'] / 100,  user_price_dec());
+                                       $ret_tax_array[$index]['Value'] += ($shipping_cost * $item_tax['rate'] / 100);
+                                   $ret_tax_array[$index]['Net'] += $shipping_cost;
+                                }
+                               }
                        }
                }
        }
@@ -159,5 +207,16 @@ function get_tax_for_items($items, $prices, $shipping_cost, $tax_group)
        return $ret_tax_array;
 }
 
+function is_tax_account($account_code)
+{
+       $sql= "SELECT id FROM ".TB_PREF."tax_types WHERE 
+               sales_gl_code=".db_escape($account_code)." OR purchasing_gl_code=".db_escape($account_code);
+       $result = db_query($sql, "checking account is tax account");
+       if (db_num_rows($result) > 0) {
+               $acct = db_fetch($result);
+               return $acct['id'];
+       } else
+               return false;
+}
 
 ?>
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