<?php
/**********************************************************************
	Copyright (C) NotrinosERP.
	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>.
***********************************************************************/

/*
*	Entry/Modify Sales Quotations
*	Entry/Modify Sales Order
*	Entry Direct Delivery
*	Entry Direct Invoice
*/

$path_to_root = '..';
$page_security = 'SA_SALESORDER';

include_once($path_to_root . '/sales/includes/cart_class.inc');
include_once($path_to_root . '/includes/session.inc');
include_once($path_to_root . '/sales/includes/sales_ui.inc');
include_once($path_to_root . '/sales/includes/ui/sales_order_ui.inc');
include_once($path_to_root . '/sales/includes/sales_db.inc');
include_once($path_to_root . '/sales/includes/db/sales_types_db.inc');
include_once($path_to_root . '/reporting/includes/reporting.inc');
// Phase 2: Quotation Templates & CRM Pipeline Integration
include_once($path_to_root . '/sales/includes/db/sales_quotation_template_db.inc');
include_once($path_to_root . '/sales/includes/db/sales_crm_bridge_db.inc');
// Phase 3: Sales Agreements & Contracts
include_once($path_to_root . '/sales/includes/db/sales_agreement_db.inc');
// Phase 4: Advanced Discount & Promotion Engine
include_once($path_to_root . '/sales/includes/db/sales_discount_db.inc');
// Phase 8: Advanced Credit Control
include_once($path_to_root . '/sales/includes/db/sales_credit_control_db.inc');

set_page_security( @$_SESSION['Items']->trans_type,
	array(	ST_SALESORDER=>'SA_SALESORDER',
			ST_SALESQUOTE => 'SA_SALESQUOTE',
			ST_CUSTDELIVERY => 'SA_SALESDELIVERY',
			ST_SALESINVOICE => 'SA_SALESINVOICE'),
	array(	'NewOrder' => 'SA_SALESORDER',
			'ModifyOrderNumber' => 'SA_SALESORDER',
			'AddedID' => 'SA_SALESORDER',
			'UpdatedID' => 'SA_SALESORDER',
			'NewQuotation' => 'SA_SALESQUOTE',
			'ModifyQuotationNumber' => 'SA_SALESQUOTE',
			'NewQuoteToSalesOrder' => 'SA_SALESQUOTE',
			'AddedQU' => 'SA_SALESQUOTE',
			'UpdatedQU' => 'SA_SALESQUOTE',
			'NewDelivery' => 'SA_SALESDELIVERY',
			'AddedDN' => 'SA_SALESDELIVERY', 
			'NewInvoice' => 'SA_SALESINVOICE',
			'AddedDI' => 'SA_SALESINVOICE'
			)
);

$js = '';

if ($SysPrefs->use_popup_windows)
	$js .= get_js_open_window(900, 500);

if (user_use_date_picker())
	$js .= get_js_date_picker();

// Don't recreate cart if we're processing POST actions
$is_post_action = isset($_POST['ApplyCoupon']) || isset($_POST['RemoveCoupon']) 
	|| isset($_POST['apply_template']) || isset($_POST['AcceptOptional']) 
	|| isset($_POST['MarkQuoteWon']) || isset($_POST['MarkQuoteLost']);

// Set page_title if not already set (for POST actions)
if (empty($_SESSION['page_title'])) {
	$_SESSION['page_title'] = isset($_SESSION['Items']) ? '' : 'Sales Entry';
}

if (!$is_post_action) {
	if (isset($_GET['NewDelivery']) && is_numeric($_GET['NewDelivery'])) {

		$_SESSION['page_title'] = _($help_context = 'Direct Sales Delivery');
		create_cart(ST_CUSTDELIVERY, $_GET['NewDelivery']);
	}
	elseif (isset($_GET['NewInvoice']) && is_numeric($_GET['NewInvoice'])) {

		create_cart(ST_SALESINVOICE, $_GET['NewInvoice']);

		if (isset($_GET['FixedAsset'])) {
			$_SESSION['page_title'] = _($help_context = 'Fixed Assets Sale');
			$_SESSION['Items']->fixed_asset = true;
		}
		else
			$_SESSION['page_title'] = _($help_context = 'Direct Sales Invoice');
	}
	elseif (isset($_GET['ModifyOrderNumber']) && is_numeric($_GET['ModifyOrderNumber'])) {
		$help_context = 'Modifying Sales Order';
		$_SESSION['page_title'] = sprintf( _('Modifying Sales Order # %d'), $_GET['ModifyOrderNumber']);
		create_cart(ST_SALESORDER, $_GET['ModifyOrderNumber']);
	}
	elseif (isset($_GET['ModifyQuotationNumber']) && is_numeric($_GET['ModifyQuotationNumber'])) {
		$help_context = 'Modifying Sales Quotation';
		$_SESSION['page_title'] = sprintf( _('Modifying Sales Quotation # %d'), $_GET['ModifyQuotationNumber']);
		create_cart(ST_SALESQUOTE, $_GET['ModifyQuotationNumber']);
	}
	elseif (isset($_GET['NewOrder'])) {
		$_SESSION['page_title'] = _($help_context = 'New Sales Order Entry');
		create_cart(ST_SALESORDER, 0);
	}
	elseif (isset($_GET['NewQuotation'])) {
		$_SESSION['page_title'] = _($help_context = 'New Sales Quotation Entry');
		create_cart(ST_SALESQUOTE, 0);
	}
	elseif (isset($_GET['NewQuoteToSalesOrder'])) {
		$_SESSION['page_title'] = _($help_context = 'Sales Order Entry');
		create_cart(ST_SALESQUOTE, $_GET['NewQuoteToSalesOrder']);
	}
}

page($_SESSION['page_title'], false, false, '', $js);

// Phase 2: Apply quotation template if requested
if (isset($_POST['apply_template']) && (int)get_post('quote_template_id') > 0
	&& isset($_SESSION['Items'])
	&& $_SESSION['Items']->trans_type == ST_SALESQUOTE)
{
	$_SESSION['Items']->load_template((int)get_post('quote_template_id'));
	$Ajax->activate('items_table');
}

// Phase 2: Accept optional item from template
$accept_opt = find_submit('AcceptOptional');
if ($accept_opt !== -1 && isset($_SESSION['Items'])) {
	$_SESSION['Items']->accept_optional_item($accept_opt);
	$Ajax->activate('items_table');
	$Ajax->activate('optional_items_table');
}

// Phase 2: Mark Quote Won (convert to SO via CRM)
if (isset($_POST['MarkQuoteWon']) && isset($_SESSION['Items'])
	&& $_SESSION['Items']->trans_type == ST_SALESQUOTE
	&& $_SESSION['Items']->trans_no != 0)
{
	$order_no = key($_SESSION['Items']->trans_no);
	sync_quote_won_to_crm($order_no, $_SESSION['Items']->customer_id);
	display_notification(_('Quote has been marked as Won in CRM.'));
}

// Phase 2: Mark Quote Lost
if (isset($_POST['MarkQuoteLost']) && isset($_SESSION['Items'])
	&& $_SESSION['Items']->trans_type == ST_SALESQUOTE
	&& $_SESSION['Items']->trans_no != 0)
{
	$order_no = key($_SESSION['Items']->trans_no);
	sync_quote_lost_to_crm($order_no, 0, get_post('lost_notes', ''));
	display_notification(_('Quote has been marked as Lost in CRM.'));
}

// Phase 4: Apply coupon to cart
if (isset($_POST['ApplyCoupon']) && isset($_SESSION['Items'])
	&& !empty(get_company_pref('use_discount_programs')))
{
	$code = trim(get_post('coupon_code', ''));
	if (!empty($code)) {
		$result = $_SESSION['Items']->apply_coupon($code);
		if ($result['success']) {
			// Persist coupon code in cart (will be propagated to POST via copy_from_cart)
			$_SESSION['Items']->coupon_code = $code;
			display_notification(sprintf(_('Coupon applied: %s discount of %s.'), $result['message'], price_format($result['discount_amount'])));
		} else {
			display_error($result['message']);
		}
	} else {
		display_error(_('Please enter a coupon code.'));
	}
	$Ajax->activate('_page_body');
}

// Phase 4: Remove coupon from cart
if (isset($_POST['RemoveCoupon']) && isset($_SESSION['Items'])
	&& !empty(get_company_pref('use_discount_programs')))
{
	$_SESSION['Items']->remove_coupon();
	$_POST['coupon_code'] = '';
	display_notification(_('Coupon has been removed.'));
	$Ajax->activate('_page_body');
}

if (isset($_GET['ModifyOrderNumber']) && is_prepaid_order_open($_GET['ModifyOrderNumber'])) {
	display_error(_('This order cannot be edited because there are invoices or payments related to it, and prepayment terms were used.'));
	end_page(); exit;
}
if (isset($_GET['ModifyOrderNumber']))
	check_is_editable(ST_SALESORDER, $_GET['ModifyOrderNumber']);
elseif (isset($_GET['ModifyQuotationNumber']))
	check_is_editable(ST_SALESQUOTE, $_GET['ModifyQuotationNumber']);

//-----------------------------------------------------------------------------

if (list_updated('branch_id')) {
	// when branch is selected via external editor also customer can change
	$br = get_branch(get_post('branch_id'));
	$_POST['customer_id'] = $br['debtor_no'];
	$Ajax->activate('customer_id');
}

if (isset($_GET['AddedID'])) {
	$order_no = $_GET['AddedID'];

	display_notification_centered(sprintf( _('Order # %d has been entered.'), $order_no));

	submenu_view(_('&View This Order'), ST_SALESORDER, $order_no);

	submenu_print(_('&Print This Order'), ST_SALESORDER, $order_no, 'prtopt');
	submenu_print(_('&Email This Order'), ST_SALESORDER, $order_no, null, 1);
	set_focus('prtopt');
	
	submenu_option(_('Make &Delivery Against This Order'), '/sales/customer_delivery.php?OrderNumber='.$order_no);

	submenu_option(_('Work &Order Entry'), '/manufacturing/work_order_entry.php?');

	submenu_option(_('Enter a &New Order'),	'/sales/sales_order_entry.php?NewOrder=0');

	$order = get_sales_order_header($order_no, ST_SALESORDER);
	$customer_id = $order['debtor_no'];
	if ($order['prep_amount'] > 0) {
		$row = db_fetch(db_query(get_allocatable_sales_orders($customer_id, $order_no, ST_SALESORDER)));
		if ($row === false)
			submenu_option(_('Receive Customer Payment'), "/sales/customer_payments.php?customer_id=$customer_id");
	}

	submenu_option(_('Add an Attachment'), "/admin/attachments.php?filterType=".ST_SALESORDER."&trans_no=$order_no");

	display_footer_exit();
}
elseif (isset($_GET['UpdatedID'])) {
	$order_no = $_GET['UpdatedID'];

	display_notification_centered(sprintf( _('Order # %d has been updated.'), $order_no));

	submenu_view(_('&View This Order'), ST_SALESORDER, $order_no);

	submenu_print(_('&Print This Order'), ST_SALESORDER, $order_no, 'prtopt');
	submenu_print(_('&Email This Order'), ST_SALESORDER, $order_no, null, 1);
	set_focus('prtopt');

	submenu_option(_('Confirm Order Quantities and Make &Delivery'), '/sales/customer_delivery.php?OrderNumber='.$order_no);

	submenu_option(_('Select A Different &Order'), '/sales/inquiry/sales_orders_view.php?OutstandingOnly=1');

	display_footer_exit();
}
elseif (isset($_GET['AddedQU'])) {
	$order_no = $_GET['AddedQU'];
	display_notification_centered(sprintf( _('Quotation # %d has been entered.'), $order_no));

	submenu_view(_('&View This Quotation'), ST_SALESQUOTE, $order_no);

	submenu_print(_('&Print This Quotation'), ST_SALESQUOTE, $order_no, 'prtopt');
	submenu_print(_('&Email This Quotation'), ST_SALESQUOTE, $order_no, null, 1);
	set_focus('prtopt');
	
	submenu_option(_('Make &Sales Order Against This Quotation'), '/sales/sales_order_entry.php?NewQuoteToSalesOrder='.$order_no);

	submenu_option(_('Enter a New &Quotation'),	'/sales/sales_order_entry.php?NewQuotation=0');

	submenu_option(_('Add an Attachment'), "/admin/attachments.php?filterType=".ST_SALESQUOTE."&trans_no=$order_no");

	display_footer_exit();
}
elseif (isset($_GET['UpdatedQU'])) {
	$order_no = $_GET['UpdatedQU'];

	display_notification_centered(sprintf( _('Quotation # %d has been updated.'), $order_no));

	submenu_view(_('&View This Quotation'), ST_SALESQUOTE, $order_no);

	submenu_print(_('&Print This Quotation'), ST_SALESQUOTE, $order_no, 'prtopt');
	submenu_print(_('&Email This Quotation'), ST_SALESQUOTE, $order_no, null, 1);
	set_focus('prtopt');

	submenu_option(_('Make &Sales Order Against This Quotation'), '/sales/sales_order_entry.php?NewQuoteToSalesOrder='.$order_no);

	submenu_option(_('Select A Different &Quotation'), '/sales/inquiry/sales_orders_view.php?type='.ST_SALESQUOTE);

	display_footer_exit();
}
elseif (isset($_GET['AddedDN'])) {
	$delivery = $_GET['AddedDN'];

	display_notification_centered(sprintf(_('Delivery # %d has been entered.'), $delivery));

	submenu_view(_('&View This Delivery'), ST_CUSTDELIVERY, $delivery);

	submenu_print(_('&Print Delivery Note'), ST_CUSTDELIVERY, $delivery, 'prtopt');
	submenu_print(_('&Email Delivery Note'), ST_CUSTDELIVERY, $delivery, null, 1);
	submenu_print(_('P&rint as Packing Slip'), ST_CUSTDELIVERY, $delivery, 'prtopt', null, 1);
	submenu_print(_('E&mail as Packing Slip'), ST_CUSTDELIVERY, $delivery, null, 1, 1);
	set_focus('prtopt');

	display_note(get_gl_view_str(ST_CUSTDELIVERY, $delivery, _('View the GL Journal Entries for this Dispatch')),0, 1);

	submenu_option(_('Make &Invoice Against This Delivery'), '/sales/customer_invoice.php?DeliveryNumber='.$delivery);

	if ((isset($_GET['Type']) && $_GET['Type'] == 1))
		submenu_option(_('Enter a New Template &Delivery'), '/sales/inquiry/sales_orders_view.php?DeliveryTemplates=Yes');
	else
		submenu_option(_('Enter a &New Delivery'), '/sales/sales_order_entry.php?NewDelivery=0');

	submenu_option(_('Add an Attachment'), '/admin/attachments.php?filterType='.ST_CUSTDELIVERY."&trans_no=$delivery");

	display_footer_exit();
}
elseif (isset($_GET['AddedDI'])) {
	$invoice = $_GET['AddedDI'];

	display_notification_centered(sprintf(_('Invoice # %d has been entered.'), $invoice));

	submenu_view(_('&View This Invoice'), ST_SALESINVOICE, $invoice);

	submenu_print(_('&Print Sales Invoice'), ST_SALESINVOICE, $invoice.'-'.ST_SALESINVOICE, 'prtopt');
	submenu_print(_('&Email Sales Invoice'), ST_SALESINVOICE, $invoice.'-'.ST_SALESINVOICE, null, 1);
	set_focus('prtopt');

	$row = db_fetch(get_allocatable_from_cust_transactions(null, $invoice, ST_SALESINVOICE));
	if ($row !== false)
		submenu_print(_('Print &Receipt'), $row['type'], $row['trans_no'].'-'.$row['type'], 'prtopt');

	display_note(get_gl_view_str(ST_SALESINVOICE, $invoice, _('View the GL &Journal Entries for this Invoice')), 0, 1);

	if ((isset($_GET['Type']) && $_GET['Type'] == 1))
		submenu_option(_('Enter a &New Template Invoice'), '/sales/inquiry/sales_orders_view.php?InvoiceTemplates=Yes');
	else
		submenu_option(_('Enter a &New Direct Invoice'), '/sales/sales_order_entry.php?NewInvoice=0');

	if ($row === false)
		submenu_option(_('Entry &customer payment for this invoice'), '/sales/customer_payments.php?SInvoice='.$invoice);

	submenu_option(_('Add an Attachment'), '/admin/attachments.php?filterType='.ST_SALESINVOICE.'&trans_no='.$invoice);

	display_footer_exit();
}
else
	check_edit_conflicts(get_post('cart_id'));

//-----------------------------------------------------------------------------

function copy_to_cart() {
	$cart = &$_SESSION['Items'];

	$cart->reference = get_post('ref');
	$cart->Comments =  $_POST['Comments'];
	$cart->document_date = $_POST['OrderDate'];
	$newpayment = false;

	if (isset($_POST['payment']) && ($cart->payment != $_POST['payment'])) {
		$cart->payment = $_POST['payment'];
		$cart->payment_terms = get_payment_terms($_POST['payment']);
		$newpayment = true;
	}
	if ($cart->payment_terms['cash_sale']) {
		if ($newpayment) {
			$cart->due_date = $cart->document_date;
			$cart->phone = '';
			$cart->cust_ref = '';
			$cart->delivery_address = '';
			$cart->ship_via = 0;
			$cart->deliver_to = '';
			$cart->prep_amount = 0;
		}
	}
	else {
		$cart->due_date = $_POST['delivery_date'];
		$cart->cust_ref = $_POST['cust_ref'];
		$cart->deliver_to = $_POST['deliver_to'];
		$cart->delivery_address = $_POST['delivery_address'];
		$cart->phone = $_POST['phone'];
		$cart->ship_via = $_POST['ship_via'];
		if (!$cart->trans_no || ($cart->trans_type == ST_SALESORDER && !$cart->is_started()))
			$cart->prep_amount = input_num('prep_amount', 0);
	}
	$cart->Location = $_POST['Location'];
	$cart->freight_cost = input_num('freight_cost');
	$cart->email = isset($_POST['email']) ? $_POST['email'] : '';
	$cart->customer_id	= $_POST['customer_id'];
	$cart->Branch = $_POST['branch_id'];
	$cart->salesman = $_POST['salesman_code'];
	$cart->sales_type = $_POST['sales_type'];

	if ($cart->trans_type!=ST_SALESORDER && $cart->trans_type!=ST_SALESQUOTE) {
		$cart->dimension_id = $_POST['dimension_id'];
		$cart->dimension2_id = $_POST['dimension2_id'];
	}
	$cart->ex_rate = input_num('_ex_rate', null);

	// Phase 2: Quotation Templates & CRM Pipeline Integration
	if ($cart->trans_type == ST_SALESQUOTE) {
		if (isset($_POST['quote_template_id']))
			$cart->template_id = (int)$_POST['quote_template_id'];
		if (isset($_POST['opportunity_id']))
			$cart->opportunity_id = (int)$_POST['opportunity_id'];
		if (isset($_POST['terms_and_conditions']))
			$cart->terms_and_conditions = $_POST['terms_and_conditions'];
	}
	// Phase 3: Sales Agreements — persist agreement_id on SO
	if ($cart->trans_type == ST_SALESORDER) {
		if (isset($_POST['agreement_id']))
			$cart->agreement_id = (int)$_POST['agreement_id'];
	}
	// Phase 4: Discount programs — persist coupon_code and applied_discounts
	if (!empty(get_company_pref('use_discount_programs'))) {
		// Only update coupon_code from POST if not already set (preserve applied coupons)
		if (empty($cart->coupon_code))
			$cart->coupon_code = get_post('coupon_code', '');
		// Re-evaluate automatic discounts on every save to cart
		$auto = $cart->get_automatic_discounts();
		// Keep coupon-type entries, replace automatic ones
		$coupon_entries = array();
		foreach ($cart->applied_discounts as $d) {
			if (!empty($d['coupon_code']))
				$coupon_entries[] = $d;
		}
		$cart->applied_discounts = array_merge($coupon_entries, $auto);
	}
}

//-----------------------------------------------------------------------------

function copy_from_cart() {
	$cart = &$_SESSION['Items'];
	$_POST['ref'] = $cart->reference;
	$_POST['Comments'] = $cart->Comments;

	$_POST['OrderDate'] = $cart->document_date;
	$_POST['delivery_date'] = $cart->due_date;
	$_POST['cust_ref'] = $cart->cust_ref;
	$_POST['freight_cost'] = price_format($cart->freight_cost);

	$_POST['deliver_to'] = $cart->deliver_to;
	$_POST['delivery_address'] = $cart->delivery_address;
	$_POST['phone'] = $cart->phone;
	$_POST['Location'] = $cart->Location;
	$_POST['ship_via'] = $cart->ship_via;

	$_POST['customer_id'] = $cart->customer_id;

	$_POST['branch_id'] = $cart->Branch;
	$_POST['salesman_code'] = $cart->salesman;
	$_POST['sales_type'] = $cart->sales_type;
	$_POST['prep_amount'] = price_format($cart->prep_amount);
	// POS 
	$_POST['payment'] = $cart->payment;
	if ($cart->trans_type!=ST_SALESORDER && $cart->trans_type!=ST_SALESQUOTE) {
		$_POST['dimension_id'] = $cart->dimension_id;
		$_POST['dimension2_id'] = $cart->dimension2_id;
	}
	$_POST['cart_id'] = $cart->cart_id;
	$_POST['_ex_rate'] = $cart->ex_rate;

	// Phase 2: Quotation Templates & CRM Pipeline Integration
	if ($cart->trans_type == ST_SALESQUOTE) {
		$_POST['quote_template_id']      = $cart->template_id;
		$_POST['opportunity_id']         = $cart->opportunity_id;
		$_POST['terms_and_conditions']   = $cart->terms_and_conditions;
	}
	// Phase 3: Sales Agreements
	if ($cart->trans_type == ST_SALESORDER) {
		$_POST['agreement_id'] = isset($cart->agreement_id) ? $cart->agreement_id : 0;
	}
	// Phase 4: Discount programs
	if (!empty(get_company_pref('use_discount_programs'))) {
		$_POST['coupon_code'] = isset($cart->coupon_code) ? $cart->coupon_code : '';
	}
}

//--------------------------------------------------------------------------------

function line_start_focus() {
	global 	$Ajax;

	$Ajax->activate('items_table');
	set_focus('_stock_id_edit');
}

//--------------------------------------------------------------------------------

function can_process() {

	global $Refs, $SysPrefs;

	copy_to_cart();

	if (!get_post('customer_id')) {
		display_error(_('There is no customer selected.'));
		set_focus('customer_id');
		return false;
	} 
	if (!get_post('branch_id')) {
		display_error(_('This customer has no branch defined.'));
		set_focus('branch_id');
		return false;
	}
	if(!branch_in_foreign_table(get_post('customer_id'), get_post('branch_id'), 'cust_branch')) {
        display_error(_('The selected branch is not a branch of the selected customer.'));
        set_focus('branch_id');
        return false;
    }
	if (!is_date($_POST['OrderDate'])) {
		display_error(_('The entered date is invalid.'));
		set_focus('OrderDate');
		return false;
	}
	if ($_SESSION['Items']->trans_type!=ST_SALESORDER && $_SESSION['Items']->trans_type!=ST_SALESQUOTE && !is_date_in_fiscalyear($_POST['OrderDate'])) {
		display_error(_('The entered date is out of fiscal year or is closed for further data entry.'));
		set_focus('OrderDate');
		return false;
	}
	if (count($_SESSION['Items']->line_items) == 0)	{
		display_error(_('You must enter at least one non empty item line.'));
		set_focus('AddItem');
		return false;
	}
	if (!$SysPrefs->allow_negative_stock() && ($low_stock = $_SESSION['Items']->check_qoh())) {
		display_error(_('This document cannot be processed because there is insufficient quantity for items marked.'));
		return false;
	}
	if ($_SESSION['Items']->payment_terms['cash_sale'] == 0) {
		if (!$_SESSION['Items']->is_started() && ($_SESSION['Items']->payment_terms['days_before_due'] == -1) && ((input_num('prep_amount')<=0) || input_num('prep_amount')>$_SESSION['Items']->get_trans_total())) {
			display_error(_('Pre-payment required have to be positive and less than total amount.'));
			set_focus('prep_amount');
			return false;
		}
		if (strlen($_POST['deliver_to']) <= 1) {
			display_error(_('You must enter the person or company to whom delivery should be made to.'));
			set_focus('deliver_to');
			return false;
		}
		if ($_SESSION['Items']->trans_type != ST_SALESQUOTE && strlen($_POST['delivery_address']) <= 1) {
			display_error( _('You should enter the street address in the box provided. Orders cannot be accepted without a valid street address.'));
			set_focus('delivery_address');
			return false;
		}
		if ($_POST['freight_cost'] == '')
			$_POST['freight_cost'] = price_format(0);

		if (!check_num('freight_cost',0)) {
			display_error(_('The shipping cost entered is expected to be numeric.'));
			set_focus('freight_cost');
			return false;
		}
		if (!is_date($_POST['delivery_date'])) {
			if ($_SESSION['Items']->trans_type==ST_SALESQUOTE)
				display_error(_('The Valid date is invalid.'));
			else	
				display_error(_('The delivery date is invalid.'));
			set_focus('delivery_date');
			return false;
		}
		if (date1_greater_date2($_POST['OrderDate'], $_POST['delivery_date'])) {
			if ($_SESSION['Items']->trans_type==ST_SALESQUOTE)
				display_error(_('The requested valid date is before the date of the quotation.'));
			else	
				display_error(_('The requested delivery date is before the date of the order.'));
			set_focus('delivery_date');
			return false;
		}
	}
	else {
		if (!db_has_cash_accounts()) {
			display_error(_('You need to define a cash account for your Sales Point.'));
			return false;
		}	
	}	
	if (!$Refs->is_valid($_POST['ref'], $_SESSION['Items']->trans_type)) {
		display_error(_('You must enter a reference.'));
		set_focus('ref');
		return false;
	}
	if (!db_has_currency_rates($_SESSION['Items']->customer_currency, $_POST['OrderDate']))
		return false;
	
	if ($_SESSION['Items']->get_items_total() < 0) {
		display_error('Invoice total amount cannot be less than zero.');
		return false;
	}

	if ($_SESSION['Items']->payment_terms['cash_sale'] && ($_SESSION['Items']->trans_type == ST_CUSTDELIVERY || $_SESSION['Items']->trans_type == ST_SALESINVOICE)) 
		$_SESSION['Items']->due_date = $_SESSION['Items']->document_date;

	// Phase 8: Advanced Credit Control check (order/invoice entry)
	if (get_company_pref('use_advanced_credit_control') && get_company_pref('credit_check_on_order')) {
		$check_type = ($_SESSION['Items']->trans_type == ST_CUSTDELIVERY
			|| $_SESSION['Items']->trans_type == ST_SALESINVOICE) ? 'delivery' : 'order';
		$order_amount = $_SESSION['Items']->get_items_total();
		$credit = check_customer_credit($_SESSION['Items']->customer_id, $order_amount, $check_type);
		if (!$credit['allowed']) {
			// Users with SA_CREDITOVERRIDE may bypass the block with a warning
			if (user_check_access('SA_CREDITOVERRIDE')) {
				display_warning($credit['reason'] . ' ' . _('(Credit override applied)'));
			} else {
				display_error($credit['reason']);
				return false;
			}
		}
	}

	return true;
}

//-----------------------------------------------------------------------------

if (isset($_POST['update'])) {
	copy_to_cart();
	$Ajax->activate('items_table');
}

if (isset($_POST['ProcessOrder']) && can_process()) {

	$modified = ($_SESSION['Items']->trans_no != 0);
	$so_type = $_SESSION['Items']->so_type;
	$trans_type = $_SESSION['Items']->trans_type;

	// --- Approval workflow check (new orders/deliveries only) ---
	if (!$modified && ($trans_type == ST_SALESORDER || $trans_type == ST_CUSTDELIVERY)) {
		$draft_data = collect_sales_cart_data($_SESSION['Items']);
		$draft_data['so_type'] = $so_type;
		$amount = $_SESSION['Items']->get_items_total();
		$approval_result = approval_check_before_save($trans_type, $draft_data, $amount, array(
			'summary'     => sprintf(_('%s to %s'), ($trans_type == ST_SALESORDER ? _('Sales Order') : _('Delivery')), $_SESSION['Items']->customer_name),
			'date'        => $_SESSION['Items']->document_date,
			'currency'    => $_SESSION['Items']->customer_currency,
			'person_type' => PT_CUSTOMER,
			'person_id'   => $_SESSION['Items']->customer_id,
		));
		if ($approval_result !== false && $approval_result['status'] === 'auto_approved') {
			$trans_no = isset($approval_result['trans_no']) ? $approval_result['trans_no'] : 0;
			new_doc_date($_SESSION['Items']->document_date);
			processing_end();
			if ($trans_type == ST_SALESORDER)
				meta_forward($_SERVER['PHP_SELF'], 'AddedID='.$trans_no);
			else
				meta_forward($_SERVER['PHP_SELF'], 'AddedDN='.$trans_no.'&Type='.$so_type);
		}
		if ($approval_result !== false) {
			return; // pending approval
		}
	}
	// --- End approval check ---

	$ret = $_SESSION['Items']->write(1);
	if ($ret == -1) {
		display_error(_('The entered reference is already in use.'));
		$ref = $Refs->get_next($_SESSION['Items']->trans_type, null, array('date' => Today()));
		if ($ref != $_SESSION['Items']->reference) {
			unset($_POST['ref']); // force refresh reference
			display_error(_('The reference number field has been increased. Please save the document again.'));
		}
		set_focus('ref');
	}
	elseif ($ret == -2) {
		display_error(_('Delivery tracking validation failed. Please correct serial/batch input and try again.'));
	}
	else {
		if (count($messages)) { // abort on failure or error messages are lost
			$Ajax->activate('_page_body');
			display_footer_exit();
		}
		$trans_no = key($_SESSION['Items']->trans_no);
		$trans_type = $_SESSION['Items']->trans_type;
		new_doc_date($_SESSION['Items']->document_date);
		processing_end();
		if ($modified) {
			if ($trans_type == ST_SALESQUOTE)
				meta_forward($_SERVER['PHP_SELF'], 'UpdatedQU='.$trans_no);
			else	
				meta_forward($_SERVER['PHP_SELF'], 'UpdatedID='.$trans_no);
		}
		elseif ($trans_type == ST_SALESORDER)
			meta_forward($_SERVER['PHP_SELF'], 'AddedID='.$trans_no);
		elseif ($trans_type == ST_SALESQUOTE)
			meta_forward($_SERVER['PHP_SELF'], 'AddedQU='.$trans_no);
		elseif ($trans_type == ST_SALESINVOICE)
			meta_forward($_SERVER['PHP_SELF'], 'AddedDI='.$trans_no.'&Type='.$so_type);
		else
			meta_forward($_SERVER['PHP_SELF'], 'AddedDN='.$trans_no.'&Type='.$so_type);
	}	
}

//--------------------------------------------------------------------------------

function check_item_data() {
	global $SysPrefs;
	
	$is_inventory_item = is_inventory_item(get_post('stock_id'));
	if(!get_post('stock_id_text', true)) {
		display_error( _('Item description cannot be empty.'));
		set_focus('stock_id_edit');
		return false;
	}
	elseif (!check_num('qty', 0) || !check_num('Disc', 0, 100)) {
		display_error( _('The item could not be updated because you are attempting to set the quantity ordered to less than 0, or the discount percent to more than 100.'));
		set_focus('qty');
		return false;
	}
	elseif (!check_num('price', 0) && (!$SysPrefs->allow_negative_prices() || $is_inventory_item)) {
		display_error( _('Price for inventory item must be entered and can not be less than 0'));
		set_focus('price');
		return false;
	}
	elseif (isset($_POST['LineNo']) && isset($_SESSION['Items']->line_items[$_POST['LineNo']]) && !check_num('qty', $_SESSION['Items']->line_items[$_POST['LineNo']]->qty_done)) {
		set_focus('qty');
		display_error(_('You attempting to make the quantity ordered a quantity less than has already been delivered. The quantity delivered cannot be modified retrospectively.'));
		return false;
	}

	$cost_home = get_unit_cost(get_post('stock_id'));
	$cost = $cost_home / get_exchange_rate_from_home_currency($_SESSION['Items']->customer_currency, $_SESSION['Items']->document_date);
	if (input_num('price') < $cost) {
		$dec = user_price_dec();
		$curr = $_SESSION['Items']->customer_currency;
		$price = number_format2(input_num('price'), $dec);
		if ($cost_home == $cost)
			$std_cost = number_format2($cost_home, $dec);
		else {
			$price = $curr.' '.$price;
			$std_cost = $curr.' '.number_format2($cost, $dec);
		}
		display_warning(sprintf(_('Price %s is below Standard Cost %s'), $price, $std_cost));
	}	
	return true;
}

//--------------------------------------------------------------------------------

function handle_update_item() {
	if ($_POST['UpdateItem'] != '' && check_item_data())
		$_SESSION['Items']->update_cart_item($_POST['LineNo'], input_num('qty'), input_num('price'), input_num('Disc') / 100, $_POST['item_description'] );
	
	page_modified();
	line_start_focus();
}

//--------------------------------------------------------------------------------

function handle_delete_item($line_no) {
	if ($_SESSION['Items']->some_already_delivered($line_no) == 0)
		$_SESSION['Items']->remove_from_cart($line_no);
	else
		display_error(_('This item cannot be deleted because some of it has already been delivered.'));
	
	line_start_focus();
}

//--------------------------------------------------------------------------------

function handle_new_item() {

	if (!check_item_data())
		return;
	
	add_to_order($_SESSION['Items'], get_post('stock_id'), input_num('qty'), input_num('price'), input_num('Disc') / 100, get_post('stock_id_text'));

	unset($_POST['_stock_id_edit'], $_POST['stock_id']);
	page_modified();
	line_start_focus();
}

//--------------------------------------------------------------------------------

function  handle_cancel_order() {
	global $path_to_root, $Ajax;

	if ($_SESSION['Items']->trans_type == ST_CUSTDELIVERY) {
		display_notification(_('Direct delivery entry has been cancelled as requested.'), 1);
		submenu_option(_('Enter a New Sales Delivery'),	'/sales/sales_order_entry.php?NewDelivery=1');
	}
	elseif ($_SESSION['Items']->trans_type == ST_SALESINVOICE) {
		display_notification(_('Direct invoice entry has been cancelled as requested.'), 1);
		submenu_option(_('Enter a New Sales Invoice'),	'/sales/sales_order_entry.php?NewInvoice=1');
	}
	elseif ($_SESSION['Items']->trans_type == ST_SALESQUOTE) {
		if ($_SESSION['Items']->trans_no != 0) 
			delete_sales_order(key($_SESSION['Items']->trans_no), $_SESSION['Items']->trans_type);
		display_notification(_('This sales quotation has been cancelled as requested.'), 1);
		submenu_option(_('Enter a New Sales Quotation'), '/sales/sales_order_entry.php?NewQuotation=Yes');
	}
	else { // sales order
		if ($_SESSION['Items']->trans_no != 0) {
			$order_no = key($_SESSION['Items']->trans_no);
			if (sales_order_has_deliveries($order_no)) {
				close_sales_order($order_no);
				display_notification(_('Undelivered part of order has been cancelled as requested.'), 1);
				submenu_option(_('Select Another Sales Order for Edition'), '/sales/inquiry/sales_orders_view.php?type='.ST_SALESORDER);
			}
			else {
				delete_sales_order(key($_SESSION['Items']->trans_no), $_SESSION['Items']->trans_type);

				display_notification(_('This sales order has been cancelled as requested.'), 1);
				submenu_option(_('Enter a New Sales Order'), '/sales/sales_order_entry.php?NewOrder=Yes');
			}
		}
		else {
			processing_end();
			meta_forward($path_to_root.'/index.php','application=orders');
		}
	}
	processing_end();
	display_footer_exit();
}

//--------------------------------------------------------------------------------

function create_cart($type, $trans_no) { 
	global $Refs, $SysPrefs;

	if (!$SysPrefs->db_ok) // create_cart is called before page() where the check is done
		return;

	processing_start();

	if (isset($_GET['NewQuoteToSalesOrder'])) {
		$trans_no = $_GET['NewQuoteToSalesOrder'];
		$doc = new Cart(ST_SALESQUOTE, $trans_no, true);
		$doc->Comments = _('Sales Quotation').' # '.$trans_no;
		$_SESSION['Items'] = $doc;
	}	
	elseif($type != ST_SALESORDER && $type != ST_SALESQUOTE && $trans_no != 0) { // this is template

		$doc = new Cart(ST_SALESORDER, array($trans_no));
		$doc->trans_type = $type;
		$doc->trans_no = 0;
		$doc->document_date = new_doc_date();
		if ($type == ST_SALESINVOICE) {
			$doc->due_date = get_invoice_duedate($doc->payment, $doc->document_date);
			$doc->pos = get_sales_point(user_pos());
		}
		else
			$doc->due_date = $doc->document_date;
		$doc->reference = $Refs->get_next($doc->trans_type, null, array('date' => Today()));
		
		foreach($doc->line_items as $line_no => $line) {
			$doc->line_items[$line_no]->qty_done = 0;
		}
		$_SESSION['Items'] = $doc;
	}
	else
		$_SESSION['Items'] = new Cart($type, array($trans_no));
	copy_from_cart();
}

//--------------------------------------------------------------------------------

if (isset($_POST['CancelOrder']))
	handle_cancel_order();

$id = find_submit('Delete');
if ($id!=-1)
	handle_delete_item($id);

if (isset($_POST['UpdateItem']))
	handle_update_item();

if (isset($_POST['AddItem']))
	handle_new_item();

if (isset($_POST['CancelItemChanges']))
	line_start_focus();

//--------------------------------------------------------------------------------

if ($_SESSION['Items']->fixed_asset)
	check_db_has_disposable_fixed_assets(_('There are no fixed assets defined in the system.'));
else
	check_db_has_stock_items(_('There are no inventory items defined in the system.'));

check_db_has_customer_branches(_('There are no customers, or there are no customers with branches. Please define customers and customer branches.'));

if ($_SESSION['Items']->trans_type == ST_SALESINVOICE) {
	$idate = _('Invoice Date:');
	$orderitems = _('Sales Invoice Items');
	$deliverydetails = _('Enter Delivery Details and Confirm Invoice');
	$cancelorder = _('Cancel Invoice');
	$porder = _('Place Invoice');
}
elseif ($_SESSION['Items']->trans_type == ST_CUSTDELIVERY) {
	$idate = _('Delivery Date:');
	$orderitems = _('Delivery Note Items');
	$deliverydetails = _('Enter Delivery Details and Confirm Dispatch');
	$cancelorder = _('Cancel Delivery');
	$porder = _('Place Delivery');
}
elseif ($_SESSION['Items']->trans_type == ST_SALESQUOTE) {
	$idate = _('Quotation Date:');
	$orderitems = _('Sales Quotation Items');
	$deliverydetails = _('Enter Delivery Details and Confirm Quotation');
	$cancelorder = _('Cancel Quotation');
	$porder = _('Place Quotation');
	$corder = _('Commit Quotations Changes');
}
else {
	$idate = _('Order Date:');
	$orderitems = _('Sales Order Items');
	$deliverydetails = _('Enter Delivery Details and Confirm Order');
	$cancelorder = _('Cancel Order');
	$porder = _('Place Order');
	$corder = _('Commit Order Changes');
}
start_form();

hidden('cart_id');
$customer_error = display_order_header($_SESSION['Items'], !$_SESSION['Items']->is_started(), $idate);

if ($customer_error == '') {

	// Phase 2: Show quotation template selector for new quotations
	$use_quote_tpl = get_company_pref('use_quotation_templates');
	if ($use_quote_tpl && $_SESSION['Items']->trans_type == ST_SALESQUOTE
		&& $_SESSION['Items']->trans_no == 0)
	{
		$templates_result = get_quotation_templates(false);
		$tpl_options = array(0 => _('-- Select Template (optional) --'));
		while ($tpl = db_fetch($templates_result))
			$tpl_options[$tpl['id']] = $tpl['name'];

		if (count($tpl_options) > 1) {
			display_heading2(_('Quotation Template'));
			start_table(TABLESTYLE_NOBORDER);
			start_row();
			label_cell(_('Load Template:'), "class='label'");
			echo '<td>';
			echo array_selector('quote_template_id', get_post('quote_template_id', 0), $tpl_options);
			echo '</td><td>';
			submit('apply_template', _('Apply Template'), false, _('Load products from the selected template'), true);
			echo '</td>';
			end_row();
			end_table(1);
		}
	}

	// Phase 2: CRM Opportunity link (for quotations, if CRM enabled)
	if (!empty($SysPrefs->prefs['use_crm']) && $_SESSION['Items']->trans_type == ST_SALESQUOTE) {
		$opps = get_crm_opportunities_for_customer($_SESSION['Items']->customer_id);
		if ($opps && db_num_rows($opps) > 0) {
			$opp_options = array(0 => _('-- No linked opportunity --'));
			while ($opp = db_fetch($opps))
				$opp_options[$opp['id']] = $opp['lead_ref'] . ': ' . $opp['title'];

			display_heading2(_('CRM Pipeline'));
			start_table(TABLESTYLE_NOBORDER);
			start_row();
			label_cell(_('Linked Opportunity:'), "class='label'");
			echo '<td>';
			echo array_selector('opportunity_id', get_post('opportunity_id', $_SESSION['Items']->opportunity_id), $opp_options);
			echo '</td>';
			end_row();
			end_table(1);
		}
	}

	display_order_summary($orderitems, $_SESSION['Items'], true);

	// Phase 3: From Agreement — show linked agreement info on new SOs
	$use_agreements = !empty($SysPrefs->prefs['use_sales_agreements']);
	if ($use_agreements && $_SESSION['Items']->trans_type == ST_SALESORDER
		&& $_SESSION['Items']->trans_no == 0)
	{
		$cust_id = $_SESSION['Items']->customer_id;
		$active_agreements = array();
		if ($cust_id > 0) {
			$agr_result = get_sales_agreements($cust_id, 'active', true);
			while ($agr = db_fetch($agr_result))
				$active_agreements[$agr['id']] = $agr['reference'] . ' (' . $agr['customer_name'] . ')';
		}
		if (!empty($active_agreements)) {
			$agr_options = array(0 => _('-- No linked agreement --')) + $active_agreements;
			display_heading2(_('Sales Agreement'));
			start_table(TABLESTYLE_NOBORDER);
			start_row();
			label_cell(_('From Agreement:'), "class='label'");
			echo '<td>';
			echo array_selector('agreement_id',
				get_post('agreement_id', isset($_SESSION['Items']->agreement_id) ? $_SESSION['Items']->agreement_id : 0),
				$agr_options);
			echo '</td>';
			end_row();
			end_table(1);
		}
	}

	// Phase 4: Coupon code entry and discount breakdown (if feature enabled)
	$use_discounts = !empty(get_company_pref('use_discount_programs'));
	if ($use_discounts
		&& in_array($_SESSION['Items']->trans_type, array(ST_SALESORDER, ST_SALESQUOTE, ST_SALESINVOICE)))
	{
		display_heading2(_('Discounts & Promotions'));
		start_table(TABLESTYLE_NOBORDER);
		start_row();
		label_cell(_('Coupon Code:'), "class='label'");
		echo '<td>';
		// Coupon code persists through cart->coupon_code (propagated to $_POST via copy_from_cart)
		$display_coupon_code = !empty($_SESSION['Items']->coupon_code) ? $_SESSION['Items']->coupon_code : '';
		if ($display_coupon_code === '' && isset($_POST['ApplyCoupon']))
			$display_coupon_code = get_post('coupon_code', '');
		text_cells_ex(null, 'coupon_code', 20, 30, $display_coupon_code);
		echo '</td><td>';
		submit('ApplyCoupon', _('Apply Coupon'), true, _('Apply the entered coupon code'), true);
		if (!empty($_SESSION['Items']->coupon_code)) {
			echo '&nbsp;';
			submit('RemoveCoupon', _('Remove'), true, _('Remove applied coupon'), false);
		}
		echo '</td>';
		end_row();
		end_table(1);

		// Show available automatic discounts
		$auto_discounts = $_SESSION['Items']->get_automatic_discounts();
		if (!empty($auto_discounts)) {
			display_note(_('Available automatic promotions:'));
			echo '<ul style="margin:4px 0 8px 20px;">';
			foreach ($auto_discounts as $ad) {
				$val = ($ad['reward_type'] === 'percentage_discount')
					? number_format2($ad['reward_value'], 1) . '%'
					: price_format($ad['reward_value']);
				echo '<li>' . htmlspecialchars($ad['name']) . ' &mdash; ' . $val . '</li>';
			}
			echo '</ul>';
		}

		// Show discount breakdown if any applied
		if (!empty($_SESSION['Items']->applied_discounts)) {
			start_table(TABLESTYLE, "width='50%'");
			table_header(array(_('Promotion'), _('Type'), _('Discount')));
			$grand_disc = 0;
			$kd = 0;
			foreach ($_SESSION['Items']->applied_discounts as $disc) {
				alt_table_row_color($kd);
				label_cell(htmlspecialchars($disc['name']));
				label_cell(!empty($disc['coupon_code'])
					? _('Coupon') . ' (' . htmlspecialchars($disc['coupon_code']) . ')'
					: ucfirst(str_replace('_', ' ', $disc['reward_type'])));
				amount_cell($disc['discount_amount']);
				end_row();
				$grand_disc += $disc['discount_amount'];
			}
			start_row();
			label_cell('<strong>' . _('Total Discount') . '</strong>', 'colspan=2 align=right');
			amount_cell($grand_disc, true);
			end_row();
			end_table(1);
		}
	}

	// Phase 2: Optional items panel (upsell products from template)
	if (!empty($_SESSION['Items']->optional_items)) {		display_heading2(_('Optional / Upsell Products'));
		div_start('optional_items_table');
		start_table(TABLESTYLE);
		$opt_th = array(_('Stock ID'), _('Description'), _('Qty'), _('Unit'), _('Price'), _('Disc %'), '');
		table_header($opt_th);
		$k = 0;
		foreach ($_SESSION['Items']->optional_items as $opt_idx => $opt) {
			alt_table_row_color($k);
			label_cell($opt['stock_id']);
			label_cell($opt['description']);
			qty_cell($opt['quantity'], false, user_qty_dec());
			label_cell(isset($opt['units']) ? $opt['units'] : '');
			amount_cell($opt['price']);
			percent_cell($opt['discount_percent'] * 100);
			echo '<td>';
			submit('AcceptOptional' . $opt_idx, _('Accept'), true, _('Add this optional product to the order'));
			echo '</td>';
			end_row();
		}
		end_table(1);
		div_end();
	}

	// Phase 2: Margin display for quotations (if enabled)
	$use_margin = get_company_pref('use_margin_display');
	if ($use_margin && $_SESSION['Items']->trans_type == ST_SALESQUOTE
		&& count($_SESSION['Items']->line_items) > 0)
	{
		$margin_data = $_SESSION['Items']->calculate_margins();
		display_heading2(_('Margin Summary'));
		start_table(TABLESTYLE_NOBORDER);
		start_row();
		label_cell(_('Cost Total:'), "class='label'");
		amount_cell($margin_data['cost_total']);
		label_cell('&nbsp;&nbsp;&nbsp;' . _('Margin:'), "class='label'");
		amount_cell($margin_data['margin_total']);
		label_cell('&nbsp;&nbsp;&nbsp;' . _('Margin %:'), "class='label'");
		label_cell(number_format2($margin_data['margin_percent'], 1) . '%');
		end_row();
		end_table(1);
	}

	// Phase 2: Terms & Conditions for quotations
	if ($_SESSION['Items']->trans_type == ST_SALESQUOTE) {
		$tpl_id = $_SESSION['Items']->template_id;
		$show_tnc = !empty($_SESSION['Items']->terms_and_conditions)
			|| ($tpl_id > 0 && ($tpl = get_quotation_template($tpl_id)) && !empty($tpl['terms_and_conditions']));
		if ($show_tnc || $tpl_id > 0) {
			display_heading2(_('Terms & Conditions'));
			start_table(TABLESTYLE_NOBORDER);
			start_row();
			label_cell(_('T&C:'), "class='label'");
			textarea_cell('terms_and_conditions', get_post('terms_and_conditions', $_SESSION['Items']->terms_and_conditions), 80, 4);
			end_row();
			end_table(1);
		}
	}

	// Phase 2: Mark Won / Mark Lost buttons for existing quotations
	if ($_SESSION['Items']->trans_type == ST_SALESQUOTE
		&& $_SESSION['Items']->trans_no != 0
		&& !empty($SysPrefs->prefs['use_crm'])
		&& $_SESSION['Items']->opportunity_id > 0)
	{
		display_heading2(_('Pipeline Actions'));
		start_table(TABLESTYLE_NOBORDER);
		start_row();
		echo '<td>';
		submit('MarkQuoteWon', _('Mark Won'), false, _('Mark the linked CRM opportunity as Won'), false);
		echo '&nbsp;&nbsp;';
		submit('MarkQuoteLost', _('Mark Lost'), false, _('Mark the linked CRM opportunity as Lost'), false);
		echo '</td>';
		end_row();
		end_table(1);
	}

	display_delivery_details($_SESSION['Items']);

	if ($_SESSION['Items']->trans_no == 0) {

		submit_center_first('ProcessOrder', $porder,  _('Check entered data and save document'), 'default');
		submit_center_last('CancelOrder', $cancelorder, _('Cancels document entry or removes sales order when editing an old document'));
		submit_js_confirm('CancelOrder', _('You are about to void this Document.\nDo you want to continue?'));
	}
	else {
		submit_center_first('ProcessOrder', $corder, _('Validate changes and update document'), 'default');
		submit_center_last('CancelOrder', $cancelorder, _('Cancels document entry or removes sales order when editing an old document'));
		if ($_SESSION['Items']->trans_type==ST_SALESORDER)
			submit_js_confirm('CancelOrder', _('You are about to cancel undelivered part of this order.\nDo you want to continue?'));
		else
			submit_js_confirm('CancelOrder', _('You are about to void this Document.\nDo you want to continue?'));
	}
}
else
	display_error($customer_error);

end_form();
end_page();
