Final rewriting of sales module
[fa-stable.git] / sales / includes / cart_class.inc
index 25de205d1b4f280e12d5a20cbd0065f9c9caea78..0e355efb58e82b0e6ec989e0ce23dc2232ea3eba 100644 (file)
@@ -14,59 +14,211 @@ include_once($path_to_root . "/taxes/tax_calc.inc");
 
 class cart
 {
+       var $trans_type; // invoice, order, delivery note ...
+       var $trans_no = array();// array (num1=>ver1,..) or 0 for new
+       var $so_type = 0;               // for sales order: simple=0 template=1
+
+       var $line_items;  //array of objects of class line_details
 
-       var $line_items; /*array of objects of class line_details using the product id as the pointer */
+       var $src_docs = array();        // array of arrays(num1=>ver1,...) or 0 for no src
+       var $src_date;                  // src document date (for info only)
 
-       var $delivery_date;
+       var $document_date;
+       var $due_date;
        var $default_sales_type; // set to the customer's sales type
        var $sales_type_name; // set to customer's sales type name
+       var $tax_included;
+
        var $customer_currency; // set to the customer's currency
        var $default_discount; // set to the customer's discount %
-       var $trans_type; // invoice, order, delivery note ...
-       var $memo_; // memo_ on direct invoicing
+       var $customer_name;
+       var $customer_id;
+       var $Branch;
+       var $email;
 
        var $deliver_to;
        var $delivery_address;
        var $phone;
 
-       var $email;
        var $cust_ref;
+       var $reference;
        var $Comments;
        var $Location;
        var $location_name;
-       var $order_no; // the original order number     
-       var $trans_no;// transaction number
-
-       var $customer_name;
-       var $customer_id;
-       var $Branch;
-
-       var $orig_order_date;
+       var $order_no;          // the original order number
+       var $trans_link = 0;
 
        var $ship_via;
-       var $freight_cost;
+       var $freight_cost = 0;
 
        var $tax_group_id;
        var $tax_group_name;
-
-       function Cart($type = 'order')
-       {
+       var $tax_group_array = null; // saves db queries
+
+       //-------------------------------------------------------------------------
+       //
+       //  $trans_no==0 => open new/direct document
+       //  $trans_no!=0 && $view==false => read for view
+       //  $trans_no!=0 && $view==true => read for edit (qty update from parent doc)
+       //
+       function Cart($type, $trans_no=0, $view=false ) {
                /*Constructor function initialises a new shopping cart */
                $this->line_items = array();
                $this->default_sales_type = "";
-               $this->trans_type = $type;
+               $this->trans_type = 30;
+               $this->read($type, $trans_no, $view );
+
        }
 
-       function add_to_cart($stock_id, $qty, $price, $disc, $qty_done=0, $standard_cost=0, $description=null, $id=0)
+
+       function read($type, $trans_no=0, $view=false ) {
+
+       if (!is_array($trans_no)) $trans_no = array($trans_no);
+
+       if ($trans_no[0]) {
+               if ($type==30) { // sales order
+                       read_sales_order($trans_no[0], $this);
+                       if ($view) {    // prepare for DN/IV entry
+                               for($line_no=0; $line_no<count($this->line_items); $line_no++) {
+                                       $line= &$this->line_items[$line_no];
+                                       $line->qty_dispatched = $line->quantity-$line->qty_done;
+                               }
+                       }
+                       } else {        // derivative transaction
+                               read_sales_trans($type, $trans_no, $this);
+                               if ($this->order_no) { // free hand credit notes have no order_no
+                                       $sodata = get_sales_order_header($this->order_no);
+                                       $this->cust_ref = $sodata["customer_ref"];
+//set_customer($customer_name, $customer_id, $currency, $discount)
+//*                                    $this->customer_name = $sodata["name"];
+//*                                    $this->customer_currency = $sodata["curr_code"];
+//*                                    $this->Comments = $sodata["comments"];
+                                       $this->delivery_address = $sodata["delivery_address"];
+//                                     $this->location_name = $sodata["location_name"];
+//                                     $this->document_date = sql2date($myrow["ord_date"]);
+                               }
+                               if (!$view && ($type!=11 || $this->trans_link!=0)) {
+                                       $src_type = get_parent_type($type);
+                                       $src_details = 0;
+                                       if ($src_type==30) { // get src data from sales_orders
+                                               $this->src_docs = array( $sodata['order_no']=>$sodata['version']);
+                                               $srcdetails = get_sales_order_details($this->order_no);
+                                       } else {        // get src_data from debtor_trans
+                                               $this->src_docs = get_customer_trans_version($src_type, get_parent_trans($type,$trans_no[0]));
+                                               $srcdetails = get_customer_trans_details($src_type,array_keys($this->src_docs));
+                                       }
+                                       // calculate & save: qtys on other docs and free qtys on src doc
+                                       $line_no = 0;
+                                       for($line_no=0; $srcline = db_fetch($srcdetails); $line_no++) {
+                                               $sign = 1; // $type==13 ?  1 : -1; // this is strange debtor_trans atavism
+                                               $line = &$this->line_items[$line_no];
+
+                                               $line->qty_old = $line->qty_dispatched = $line->quantity;
+                                               $line->quantity += $sign*($srcline['quantity']-$srcline['qty_done']); // add free qty on src doc
+                                       }
+                               } else {
+                                       for($line_no=0; $line_no<count($this->line_items); $line_no++) {
+                                               $line= &$this->line_items[$line_no];
+                                               $line->qty_dispatched = $line->quantity;
+                                       }
+                               }
+                       }
+               } else {
+                       $this->trans_type = $type;
+                       $this->trans_no = 0;
+                       // set new sales document defaults here
+                       $this->customer_id='';
+                       $this->document_date = Today();
+                       if (!is_date_in_fiscalyear($this->document_date))
+                       $this->document_date = end_fiscalyear();
+                       $this->reference = references::get_next($this->trans_type);
+               }
+       }
+
+       //-------------------------------------------------------------------------
+       // Writing new/modified sales document to database.
+       // Makes parent documents for direct delivery/invoice by recurent call.
+
+       function write($policy=0) {
+               if (count($this->src_docs) == 0 && ($this->trans_type == 10 || $this->trans_type == 13)) {
+                       // direct document -> first add parent
+                       $src = $this; // make local copy of this cart
+                       $src->trans_type = get_parent_type($src->trans_type);
+                       $src->reference = 'auto';
+
+                       $src->write(1);
+                       $type = $this->trans_type;
+                       $ref = $this->reference;
+                       // re-read document
+                       $this->read($src->trans_type, key($src->trans_no), true);
+
+                       $this->reference = $ref;
+                       $this->trans_type = $type;
+                       $this->src_docs= $this->trans_no;
+                       $this->trans_no = 0;
+                       $this->order_no= $this->trans_type==13 ? key($src->trans_no) : $src->order_no;
+               }
+               switch($this->trans_type) {
+                       case 10:
+                               return write_sales_invoice($this);
+                       case 11:
+                               return write_credit_note($this, $policy);
+                       case 13:
+                               return write_sales_delivery($this, $policy);
+                       case 30:
+                               if ($this->trans_no==0) // new document
+                                       return add_sales_order($this);
+                               else
+                                       return update_sales_order($this);
+               }
+       }
+
+       function set_customer($customer_id, $customer_name, $currency, $discount)
        {
-               if (isset($stock_id) && $stock_id != "" && isset($qty)/* && $qty > 0*/)
-               {
-                       $this->line_items[] = new line_details($stock_id, $qty, $price, $disc, 
-                               $qty_done,  $standard_cost, $description, $id);
+               $this->customer_name = $customer_name;
+               $this->customer_id = $customer_id;
+               $this->default_discount = $discount;
+               $this->customer_currency = $currency;
+       }
+
+       function set_branch($branch_id, $tax_group_id, $tax_group_name, $phone='', $email='')
+       {
+               $this->Branch = $branch_id;
+               $this->phone = $phone;
+               $this->email = $email;
+               $this->tax_group_id = $tax_group_id;
+               $this->tax_group_array = get_tax_group_items_as_array($tax_group_id);
+       }
+
+       function set_sales_type($sales_type, $sales_name, $tax_included=0)
+       {
+               $this->default_sales_type = $sales_type;
+               $this->sales_type_name = $sales_name;
+               $this->tax_included = $tax_included;
+       }
+
+       function set_location($id, $name)
+       {
+               $this->Location = $id;
+               $this->location_name = $name;
+       }
+
+       function set_delivery($shipper, $destination, $address, $freight_cost=null)
+       {
+               $this->ship_via = $shipper;
+               $this->deliver_to = $destination;
+               $this->delivery_address = $address;
+               if (isset($freight_cost))
+                       $this->freight_cost = $freight_cost;
+       }
+
+       function add_to_cart($line_no,$stock_id, $qty, $price, $disc, $qty_done=0, $standard_cost=0, $description=null, $id=0, $src_no=0)
+       {
+               if (isset($stock_id) && $stock_id != "" && isset($qty)/* && $qty > 0*/) {
+                       $this->line_items[$line_no] = new line_details($stock_id, $qty, $price, $disc,
+                               $qty_done,  $standard_cost, $description, $id, $src_no);
                        return 1;
-               }
-               else
-               {
+               } else {
                        // shouldn't come here under normal circumstances
                        display_db_error("unexpected - adding an invalid item or null quantity", "", true);
                }
@@ -76,13 +228,12 @@ class cart
        function update_cart_item($line_no, $qty, $price, $disc)
        {
 
-               if ($qty > 0)
-               {
-                       $this->line_items[$line_no]->quantity = $qty;
-               }
+               $this->line_items[$line_no]->quantity = $qty;
+               $this->line_items[$line_no]->qty_dispatched = $qty;
                $this->line_items[$line_no]->price = $price;
                $this->line_items[$line_no]->discount_percent = $disc;
        }
+
        function update_add_cart_item_qty($line_no, $qty)
        {
                $this->line_items[$line_no]->quantity += $qty;
@@ -90,12 +241,12 @@ class cart
 
        function remove_from_cart($line_no)
        {
-                       unset($this->line_items[$line_no]);
+               unset($this->line_items[$line_no]);
        }
 
        function clear_items()
        {
-       unset($this->line_items);
+               unset($this->line_items);
                $this->line_items = array();
                $this->default_sales_type = "";
                $this->trans_no = 0;
@@ -104,64 +255,50 @@ class cart
 
        function count_items()
        {
-         $counter=0;
-         foreach($this->line_items as $line) {
-               if($line->quantity>$line->qty_done) $counter++;
-         }
+               $counter=0;
+               foreach ($this->line_items as $line) {
+                       if ($line->quantity!=$line->qty_done) $counter++;
+               }
                return $counter;
        }
 
-       function get_items_total_dispatch($tax_group_id=null)
+       function get_items_total()
        {
                $total = 0;
 
-               // preload the taxgroup !
-               if ($tax_group_id != null)
-                       $tax_group_array = get_tax_group_items_as_array($tax_group_id);
-               else
-                       $tax_group_array = null;
-
-               foreach ($this->line_items as $ln_itm)
-               {
-                       $total += ($ln_itm->qty_dispatched * $ln_itm->taxfree_price($tax_group_id, $tax_group_array) * (1 - $ln_itm->discount_percent));
+               foreach ($this->line_items as $ln_itm) {
+                       $price = $ln_itm->line_price();
+                       $total += ($ln_itm->quantity * $price * (1 - $ln_itm->discount_percent));
                }
                return $total;
        }
 
-       function has_items_dispatch()
+       function get_items_total_dispatch()
        {
-               foreach ($this->line_items as $ln_itm)
-               {
-                       if ($ln_itm->qty_dispatched > 0)
-                               return true;
+               $total = 0;
+
+               foreach ($this->line_items as $ln_itm) {
+                       $price = $ln_itm->line_price();
+                       $total += ($ln_itm->qty_dispatched * $price * (1 - $ln_itm->discount_percent));
                }
-               return false;
+               return $total;
        }
 
-       function get_items_total($tax_group_id=null)
+       function has_items_dispatch()
        {
-               $total = 0;
-
-               // preload the taxgroup !
-               if ($tax_group_id != null)
-                       $tax_group_array = get_tax_group_items_as_array($tax_group_id);
-               else
-                       $tax_group_array = null;
-
                foreach ($this->line_items as $ln_itm) {
-                       $total += ($ln_itm->quantity * $ln_itm->taxfree_price($tax_group_id, $tax_group_array) * (1 - $ln_itm->discount_percent));
+                       if ($ln_itm->qty_dispatched > 0)
+                               return true;
                }
-               return $total;
+               return false;
        }
 
        function any_already_delivered()
        {
-               /* Checks if there have been deliveries of line items */
+               /* Checks if there have been any line item processed */
 
-               foreach ($this->line_items as $stock_item)
-               {
-                       if ($stock_item->qty_done !=0)
-                       {
+               foreach ($this->line_items as $stock_item) {
+                       if ($stock_item->qty_done !=0) {
                                return 1;
                        }
                }
@@ -173,42 +310,63 @@ class cart
        function some_already_delivered($line_no)
        {
                /* Checks if there have been deliveries of a specific line item */
-               if (isset($this->line_items[$line_no]) && 
-                       $this->line_items[$line_no]->qty_done != 0)
-               {
+               if (isset($this->line_items[$line_no]) &&
+                       $this->line_items[$line_no]->qty_done != 0) {
                        return 1;
                }
                return 0;
        }
 
-    function get_taxes($tax_group_id=null, $shipping_cost=0)
-    {
-       $items = array();
-       $prices = array();
+       function get_taxes($shipping_cost=null)
+       {
+               $items = array();
+               $prices = array();
+               if($shipping_cost==null)
+                       $shipping_cost = $this->freight_cost;
 
-        if ($tax_group_id == null)
-               $tax_group_id = $this->tax_group_id;
+               foreach ($this->line_items as $ln_itm) {
+                       $items[] = $ln_itm->stock_id;
+                       $prices[] = ($ln_itm->qty_dispatched *
+                               $ln_itm->line_price()* (1 - $ln_itm->discount_percent));
+               }
 
-               // preload the taxgroup !
-               $tax_group_array = get_tax_group_items_as_array($tax_group_id);
+               $taxes = get_tax_for_items($items, $prices, $shipping_cost,
+               $this->tax_group_id, $this->tax_included,  $this->tax_group_array);
 
-        foreach ($this->line_items as $ln_itm)
-        {
-                       $items[] = $ln_itm->stock_id;
-                       $prices[] = ($ln_itm->qty_dispatched * $ln_itm->taxfree_price($tax_group_id, $tax_group_array) * (1 - $ln_itm->discount_percent));
-        }
+               return $taxes;
+       }
 
 
-        $taxes = get_tax_for_items($items, $prices, $shipping_cost, $tax_group_id, $tax_group_array);
+       function get_tax_free_shipping() {
 
-        return $taxes;
-    }
+               if ($this->tax_included==0)
+                       return $this->freight_cost;
+               else
+                       return ($this->freight_cost - $this->get_shipping_tax());
+       }
+
+       function get_shipping_tax() {
+
+               $tax_items = get_shipping_tax_as_array();
+               $tax_rate = 0;
+               if ($tax_items != null) {
+                       foreach ($tax_items as $item_tax) {
+                               $index = $item_tax['tax_type_id'];
+                               if (isset($this->tax_group_array[$index])) {
+                                       $tax_rate += $item_tax['rate'];
+                               }
+                       }
+               }
+               if($this->tax_included)
+                       return $this->freight_cost*$tax_rate/($tax_rate+100);
+               else
+                       return $this->freight_cost*$tax_rate/100;
+       }
 
 } /* end of class defintion */
 
 class line_details
 {
-       var $line_no;
        var $id;
        var $stock_id;
        var $item_description;
@@ -216,20 +374,22 @@ class line_details
        var $mb_flag;
        var $tax_type;
        var $tax_type_name;
-
+       var $src_no;    // number of src doc for this line
        var $quantity;
        var $price;
        var $discount_percent;
-       var $qty_done;  // quantity processed so far
-       var $qty_dispatched; // quantity selected to process 
+       var $qty_done;  // quantity processed on child documents
+       var $qty_dispatched; // quantity selected to process
+       var $qty_old=0; // quantity dispatched before edition
        var $standard_cost;
 
-       function line_details ($stock_id, $qty, $prc, $disc_percent,  
-               $qty_done, $standard_cost, $description, $id=0)
+       function line_details ($stock_id, $qty, $prc, $disc_percent,
+               $qty_done, $standard_cost, $description, $id=0, $src_no=0 )
        {
        /* Constructor function to add a new LineDetail object with passed params */
 
                $this->id = $id;
+               $this->src_no = $src_no;
                $item_row = get_item($stock_id);
 
                if ($item_row == null)
@@ -247,23 +407,18 @@ class line_details
 
                $this->stock_id = $stock_id;
                $this->quantity = $qty;
+               $this->qty_dispatched = $qty;
                $this->price = $prc;
                $this->discount_percent = $disc_percent;
                $this->qty_done = $qty_done;
                $this->standard_cost = $standard_cost;
        }
 
-       function full_price()
+       // get unit price as stated on document
+       function line_price()
        {
                return $this->price;
        }
-
-       function taxfree_price($tax_group_id, $tax_group_array=null)
-       {
-               if ($tax_group_id==null)
-                       return $this->price;
-               return get_tax_free_price_for_item($this->stock_id, $this->price, $tax_group_id, $tax_group_array);
-       }
 }
 
 ?>