Merged changes up to 2.3.16 into unstable
[fa-stable.git] / sales / includes / cart_class.inc
index f7a41567a4fc45d341e32fe650caa090fc5ca67e..37c16528cc1808f993770e9f5c035b4292bcfaa9 100644 (file)
@@ -64,7 +64,9 @@ class cart
        var $tax_group_array = null; // saves db queries
        var $price_factor;       // ditto for price calculations
 
-       var     $pos;                   // user assigned POS (contains cash accont number/name)
+       var     $pos;                   // user assigned POS
+       var $cash_account;
+       var $account_name;
        var $cash_discount;     // not used as of FA 2.1
        var $dimension_id;
        var $dimension2_id;
@@ -72,13 +74,20 @@ class cart
        var $payment_terms; // cached payment terms
        var $credit;
        
+       // prepayment mode:
+       var $prepaid;           // true for documents issued in prepayment mode
+       var $prep_amount;       // prepayment required for SO, invoiced amount for prepaiament invoice
+       var $sum_paid;          // sum of all allocated prepayments both to order and related invoices
+       var $alloc;             // sum of payments allocated to this document
+       var $prepayments = array(); // allocation records for this document
        //-------------------------------------------------------------------------
        //
        //  $trans_no==0 => open new/direct document
-       //  $trans_no!=0 && $prep_child==false => update with parent constarints for reedition
-       //  $trans_no!=0 && $prep_child==true => prepare for child doc entry
+       //  $trans_no!=0 && $prepare_child==false => update with parent constarints for reedition
+       //  $trans_no!=0 && $prepare_child==true => prepare for child doc entry
+       //      $prepare_child is set to ST_SALESINVOICE for prepayment invoices
        //
-       function Cart($type, $trans_no=0, $prep_child=false) {
+       function Cart($type, $trans_no=0, $prepare_child=false) {
                /*Constructor function initialises a new shopping cart */
                $this->line_items = array();
                $this->sales_type = "";
@@ -89,27 +98,53 @@ class cart
                $this->dimension_id = 0;
                $this->dimension2_id = 0;
                $this->pos = get_sales_point(user_pos());
-               $this->read($type, $trans_no, $prep_child);
+               $this->read($type, $trans_no, $prepare_child);
                $this->cart_id = uniqid('');
        }
-       
+
+       /*
+               Optional sorting items by stock_id.
+       */
+       function _cmp_lines($a, $b)
+       {
+               return strcmp($a->stock_id, $b->stock_id);
+       }
+
+       /*
+               Returns items array optionally sorted by item code.
+       */
+       function get_items()
+       {
+               global $sort_sales_items;
+
+               $items = $this->line_items;
+               if (@$sort_sales_items)
+                       uasort($items, array($this, '_cmp_lines'));
+
+               return $items;
+       }
        //
        //      Prepare cart to new child document entry, just after initial parent doc read.
        //
-       function prepare_child()
+       function prepare_child($type)
        {
                global $Refs;
 
-               $type = get_child_type($this->trans_type);
+               if ($type === true)
+                       $type = get_child_type($this->trans_type);
 
                $this->trans_type = $type;
                $this->reference = $Refs->get_next($this->trans_type);
+               if ($type == ST_CUSTCREDIT)
+                   $this->src_date = $this->document_date;
+
                $this->document_date = new_doc_date();
 
                for($line_no = 0; $line_no < count($this->line_items); $line_no++) {
                        $line = &$this->line_items[$line_no];
                        $line->src_id = $line->id; // save src line ids for update
-                       $line->qty_dispatched = $type == ST_CUSTCREDIT ? '0' : $line->quantity - $line->qty_done;
+                       $line->qty_dispatched = $type == ST_CUSTCREDIT ? '0' : 
+                                (($this->prepaid && $type == ST_SALESINVOICE) ? $line->quantity : $line->quantity - $line->qty_done);
                        $line->qty_old = 0;
                }
                unset($line);
@@ -124,9 +159,6 @@ class cart
                        $this->due_date = get_invoice_duedate($this->payment, $this->document_date);
                }
 
-               if ($type == ST_CUSTCREDIT)
-                   $this->src_date = $this->document_date;
-
                $this->src_docs = $this->trans_no;
                $this->trans_no = 0;
        }
@@ -145,7 +177,7 @@ class cart
                // that child line_items contains subset of parent lines in _the_same_ order !
                while (($line_no < count($this->line_items)) && ($srcline = db_fetch($srcdetails))) {
                        $line = &$this->line_items[$line_no];
-                       $src_docs[] = $srcline['trans_type']==ST_SALESORDER ?  $srcline['order_no'] : $srcline['debtor_trans_no'];
+                       $src_docs[] = $src_type == ST_SALESORDER ?  $srcline['order_no'] : $srcline['debtor_trans_no'];
                        if ($srcline['id'] == $line->src_id) {
                                if ($this->trans_type == ST_SALESINVOICE)
                                        $line->src_no = $srcline['debtor_trans_no'];
@@ -153,7 +185,6 @@ class cart
                                $line->quantity += $srcline['quantity'] - 
                                        ($src_type==ST_SALESORDER ? $srcline['qty_sent'] : $srcline['qty_done']); // add free qty on src doc
                                $line_no++;
-                               break;
                        }
                }
 
@@ -167,7 +198,7 @@ class cart
        //-------------------------------------------------------------------------
        // Reading document into cart
        //
-       function read($type, $trans_no=0, $prep_child=false) {
+       function read($type, $trans_no=0, $prepare_child=false) {
 
                global $SysPrefs, $Refs;
 
@@ -177,7 +208,8 @@ class cart
                        if ($type == ST_SALESORDER || $type == ST_SALESQUOTE) { // sales order || sales quotation
                                read_sales_order($trans_no[0], $this, $type);
                        } else {        // other type of sales transaction
-                                       read_sales_trans($type, $trans_no, $this); 
+                                       read_sales_trans($type, $trans_no, $this);
+                                       $this->prepayments = get_payments_for($trans_no[0], $type);
                                        if ($this->order_no) { // free hand credit notes have no order_no
                                                $sodata = get_sales_order_header($this->order_no, ST_SALESORDER);
                                                $this->cust_ref = $sodata["customer_ref"];
@@ -186,13 +218,13 @@ class cart
                                                $this->delivery_to = $sodata["deliver_to"];
                                                $this->delivery_address = $sodata["delivery_address"];
                                        // child transaction reedition - update with parent info unless it is freehand
-                                       if (!$prep_child) // this is read for view/reedition
+                                       if (!$this->is_prepaid() && !$prepare_child) // this is read for view/reedition
                                                $this->set_parent_constraints($sodata, $trans_no[0]);
                                        }
                        }
                        // convert document into child and prepare qtys for entry
-                       if ($prep_child)
-                               $this->prepare_child();
+                       if ($prepare_child)
+                               $this->prepare_child($prepare_child);
 
                } else { // new document
                                $this->trans_type = $type;
@@ -242,12 +274,21 @@ class cart
        // Writing new/modified sales document to database.
        // Makes parent documents for direct delivery/invoice by recurent call.
        // $policy - 0 or 1:  writeoff/return for IV, back order/cancel for DN
-       function write($policy=0) { 
+       function write($policy=0) {
+
                begin_transaction(); // prevents partial database changes in case of direct delivery/invoice
-               if (count($this->src_docs) == 0 && ($this->trans_type == ST_SALESINVOICE || $this->trans_type == ST_CUSTDELIVERY)) {
+               if ($this->reference != 'auto' && $this->trans_no == 0 && !is_new_reference($this->reference, $this->trans_type))
+               {
+                       commit_transaction();
+                       return -1;
+               }
+               if (count($this->src_docs) == 0 && ($this->trans_type == ST_SALESINVOICE || $this->trans_type == ST_CUSTDELIVERY) && !$this->is_prepaid()) {
                        // this is direct document - first add parent
                        $ref = $this->reference;
                        $date = $this->document_date;
+                       $due_date = $this->due_date;
+                       $dimension_id = $this->dimension_id;
+                       $dimension2_id = $this->dimension2_id;
                        $this->trans_type = get_parent_type($this->trans_type);
 
                        $this->reference = 'auto'; 
@@ -257,6 +298,9 @@ class cart
                        $this->read($this->trans_type, $trans_no, true); 
                        $this->document_date = $date;
                        $this->reference = $ref;
+                       $this->due_date = $due_date;
+                       $this->dimension_id = $dimension_id;
+                       $this->dimension2_id = $dimension2_id;
                }
                $this->reference = @html_entity_decode($this->reference, ENT_QUOTES);
                $this->Comments = @html_entity_decode($this->Comments, ENT_QUOTES);
@@ -481,12 +525,12 @@ class cart
        function get_shipping_tax()
        {
 
-               $tax_items = get_shipping_tax_as_array();
+               $tax_items = get_shipping_tax_as_array($this->tax_group_id);
                $tax_rate = 0;
                if ($tax_items != null) {
                        foreach ($tax_items as $item_tax) {
                                $index = $item_tax['tax_type_id'];
-                               if (isset($this->tax_group_array[$index])) {
+                               if (isset($this->tax_group_array[$index]['rate'])) {
                                        $tax_rate += $item_tax['rate'];
                                }
                        }
@@ -512,6 +556,52 @@ class cart
 
                return $total;
        }
+
+       /*
+               Returns true for documents issued in prepayment cycle.
+       */
+       function is_prepaid()
+       {
+               return $this->prepaid; //floatcmp($this->prep_amount, 0) > 0;
+       }
+       /*
+               Order is ready for delivery in prepament mode.
+       */
+       function is_released()
+       {
+               return floatcmp($this->sum_paid, $this->prep_amount) >= 0;
+       }
+
+       /*
+               Check whether order has been already invoiced/send or not.
+       */
+       function is_started()
+       {
+               if ($this->trans_no==0)
+                       return false;
+               $order_no = array_keys($this->trans_no);
+
+               return  is_sales_order_started(reset($order_no));
+       }
+
+       /*
+               Check payment terms and prepayments selected for this invoice,
+               and updates     partial/final invoice value respectively.
+       */
+       function update_payments()
+       {
+               $remainder = prepaid_invoice_remainder($this->order_no);
+
+               // recalculate prepaid part from payments
+               if ($this->payment_terms['days_before_due'] < 0)
+               {       // this is partial invoice for selected prepayments made.
+                       $paid = 0;
+                       foreach($this->prepayments as $payment)
+                               $paid += $payment['amt'];
+                       $this->prep_amount = min($remainder, $paid);
+               } else  // this is final invoice
+                       $this->prep_amount = $remainder;
+       }
 } /* end of class defintion */
 
 class line_details