New tax system implementation.
[fa-stable.git] / purchasing / includes / po_class.inc
index b7f15ac5307b5864aa6e3ea13590e7eea723d4ad..0053b0b1578cc44cb16d118ee9043ea6baa985a5 100644 (file)
@@ -16,33 +16,34 @@ class purch_order
 {
 
        var $trans_type; // order/grn/invoice (direct)
-       var $line_items;
-       var $curr_code;
-       var $supp_ref;
-       var $delivery_address;
+       var $supplier_id;
        var $Comments;
+       var $tran_date;
+       var $reference;
+       var $supp_ref;
        var $Location;
-       var $supplier_id;
+       var $delivery_address;
+
+       var $prep_amount = 0; // prepayment required
+       var $alloc; // sum of payments allocated
+       var $tax_included; // type of prices
+
+       var $line_items;
+       var $curr_code;
        var $supplier_name;
-       var $orig_order_date;
        var $due_date;
        var $order_no; /*Only used for modification of existing orders otherwise only established when order committed */
        var $lines_on_order = 0;
        var $credit;
        var $tax_group_id;
-       var $tax_group_array = null; // saves db queries
-       var $tax_included; // type of prices
        var $terms;
        var $ex_rate;
        var $cash_account;
        var $dimension,
                $dimension2;
 
-       var $reference;
        var $tax_overrides = array();           // array of taxes manually inserted during sales invoice entry (direct invoice)
-       
-       var $prep_amount = 0; // prepayment required
-       var $alloc; // sum of payments allocated
+
        var $prepayments = array();
 
        var $fixed_asset = false;
@@ -50,19 +51,19 @@ class purch_order
 
        function __construct()
        {
-               /*Constructor function initialises a new purchase order object */
                $this->line_items = array();
                $this->lines_on_order = $this->order_no = $this->supplier_id = 0;
+               $this->tax_group_id = find_domestic_tax_group(); // prevent tax errors until supplier is selected
        }
        
-       function set_supplier($supplier_id, $supplier_name, $curr_code, $tax_group_id, $tax_included)
+       function set_supplier($supplier_id, $supplier_name, $curr_code, $tax_group_id, $tax_included, $tax_area)
        {
                $this->supplier_id = $supplier_id;
                $this->supplier_name = $supplier_name;
                $this->curr_code = $curr_code;
                $this->tax_group_id = $tax_group_id;
                $this->tax_included = $tax_included;
-               $this->tax_group_array = get_tax_group_items_as_array($tax_group_id);
+               $this->tax_area = $tax_area;
        }
        
        function add_to_order($line_no, $stock_id, $qty, $item_descr, $price, $uom, $req_del_date, $qty_inv, $qty_recd, $qty_ordered=0, $grn_item_id=0)
@@ -152,8 +153,8 @@ class purch_order
                        $items[] = $ln_itm->stock_id;
                        $prices[] = round($ln_itm->price * $ln_itm->quantity,  user_price_dec());
                }
-               $taxes = get_tax_for_items($items, $prices, $shipping_cost,
-                 $this->tax_group_id, $this->tax_included,  $this->tax_group_array);
+               $taxes = get_tax_for_items($this->trans_type, $items, $prices, $shipping_cost,
+                 $this->tax_group_id, $this->tax_included);
 
        // Adjustment for swiss franken, we always have 5 rappen = 1/20 franken
            if ($this->curr_code == 'CHF') {
@@ -184,8 +185,8 @@ class purch_order
                }
 
                if (!$this->tax_included ) {
-                       $taxes = get_tax_for_items($items, $prices, 0, $this->tax_group_id,
-                       $this->tax_included,  $this->tax_group_array);
+                       $taxes = get_tax_for_items($this->trans_type, $items, $prices, 0, $this->tax_group_id,
+                       $this->tax_included);
 
                        foreach($taxes as $tax)
                                $total += round($tax['Value'], $dec);
@@ -193,6 +194,40 @@ class purch_order
                return $total;
        }
 
+       function split_line_values()
+       {
+               // split nominal line values
+               foreach($this->line_items as $line)
+                       $line->split_item_value($this);
+
+               // Exact tax values are currently entered as tax totals, so we need to move the differences back on line level.
+               // currently first item with given tax type will be fixed with the calculated difference
+               // FIXME: change UI moving tax edit to line level in line edit mode, then this workaround will be obsolete.
+               foreach($this->get_taxes() as $tax_id => $tax)
+               {
+                       if ($tax['Value'] != 0 && ($tax['Value'] != $tax['Override']))
+                       {
+                               foreach($this->line_items as $id => $line)
+                                       if ($line->gl_amounts[0]['tax_type_id'] == $tax_id) // assumed single tax rate on item, so always gl_mount[0] is valid
+                                       {
+                                               $diff = $tax['Override'] - $tax['Value'];
+                                               $this->line_items[$id]->gl_amounts[0]['Value'] += $diff;
+                                               if ($this->vat_category() != VC_NONDEDUCT)
+                                                       $this->line_items[$id]->gl_amounts[0]['Deductible'] += $diff;
+                                               else
+                                                       $this->line_items[$id]->gl_amounts['Cost'] += $diff;
+                                                // when supplier uses net prices the price is exact, so don't fix net, still record exact VAT.
+                                               if ($this->tax_included) 
+                                               {
+                                                       $this->line_items[$id]->gl_amounts['Net'] -= $diff;
+                                                       $this->line_items[$id]->gl_amounts['Cost'] -= $diff;
+                                               }
+                                               break;
+                                       }
+                       }
+               }
+       }
+
 } /* end of class defintion */
 
 class po_line_details 
@@ -206,8 +241,6 @@ class po_line_details
        var $price;
        var $units;
        var $req_del_date;
-       var $tax_type;
-       var $tax_type_name;
 
        var $quantity;          // this document line quantity
        var $qty_inv;   // quantity already invoiced against this line (all PIs)
@@ -216,6 +249,7 @@ class po_line_details
 
        var $unit_cost;
        var $descr_editable;
+       var $vat_category;
 
        function __construct($line_no, $stock_item, $item_descr, $qty, $prc, $uom, $req_del_date, 
                $qty_inv, $qty_recd, $qty_ordered=0, $grn_item_id=0)
@@ -236,30 +270,34 @@ class po_line_details
                $this->req_del_date = $req_del_date;
                $this->price = $prc;
 //             $this->units = $uom;
-               $this->tax_type = $item_row["tax_type_id"];
-               $this->tax_type_name = $item_row["tax_type_name"];
                $this->units = $item_row["units"];
                $this->qty_received = $qty_recd;
                $this->qty_inv = $qty_inv;
                $this->unit_cost =0;
                $this->grn_item_id = $grn_item_id;
+               $this->vat_category = $item_row["vat_category"];
                $this->qty_ordered = $qty_ordered;
        }
        
-       // Deprecated, use with care. If you need line value as it is calculated in invoice, use taxfree_charge_value below.
-       function taxfree_charge_price($po)
-       {
-               return get_tax_free_price_for_item($this->stock_id, $this->price, 
-                 $po->tax_group_id, $po->tax_included, $po->tax_group_array);
-       }
-
        //
        // GRN line tax free value.
        //
        function taxfree_charge_value($po)
        {
-               return get_tax_free_price_for_item($this->stock_id, $this->quantity*$this->price,
-                 $po->tax_group_id, $po->tax_included, $po->tax_group_array);
+               return get_tax_free_price_for_item($po->trans_type, $this->stock_id, $this->quantity*$this->price,
+                 $po->tax_group_id, $po->tax_included);
+       }
+
+       /*
+               Splits item value to parts posted to GL.
+       */
+       function split_item_value($cart)
+       {
+        $vat_factor = 1;
+
+               return $this->gl_amounts = split_item_price($this->stock_id, $this->price*$this->quantity, $cart->tax_group_id, $cart->tax_included, 
+                       ST_SUPPINVOICE, $vat_factor, $cart->tran_date);
        }
+  
 }