<?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>.
***********************************************************************/
$page_security = 'SA_LOCATIONTRANSFER';
$path_to_root = "..";
include_once($path_to_root . "/includes/ui/items_cart.inc");

include_once($path_to_root . "/includes/session.inc");

include_once($path_to_root . "/includes/date_functions.inc");
include_once($path_to_root . "/includes/data_checks.inc");

include_once($path_to_root . "/inventory/includes/stock_transfers_ui.inc");
include_once($path_to_root . "/inventory/includes/inventory_db.inc");
$js = "";
if ($SysPrefs->use_popup_windows)
	$js .= get_js_open_window(800, 500);
if (user_use_date_picker())
	$js .= get_js_date_picker();

if (isset($_GET['NewTransfer'])) {
	if (isset($_GET['FixedAsset'])) {
		$page_security = 'SA_ASSETTRANSFER';
		$_SESSION['page_title'] = _($help_context = "Fixed Assets Location Transfers");
	}
	else {
		$_SESSION['page_title'] = _($help_context = "Inventory Location Transfers");
	}
}
page($_SESSION['page_title'], false, false, "", $js);

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

check_db_has_costable_items(_("There are no inventory items defined in the system (Purchased or manufactured items)."));

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

if (isset($_GET['AddedID'])) 
{
	$trans_no = $_GET['AddedID'];
	$trans_type = ST_LOCTRANSFER;

	display_notification_centered(_("Inventory transfer has been processed"));
	display_note(get_trans_view_str($trans_type, $trans_no, _("&View this transfer")));

  $itm = db_fetch(get_stock_transfer_items($_GET['AddedID']));

  if (is_fixed_asset($itm['mb_flag']))
	  hyperlink_params($_SERVER['PHP_SELF'], _("Enter &Another Fixed Assets Transfer"), "NewTransfer=1&FixedAsset=1");
  else
	  hyperlink_params($_SERVER['PHP_SELF'], _("Enter &Another Inventory Transfer"), "NewTransfer=1");

	display_footer_exit();
}
//--------------------------------------------------------------------------------------------------

function line_start_focus() {
  global 	$Ajax;

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

function handle_new_order()
{
	if (isset($_SESSION['transfer_items']))
	{
		$_SESSION['transfer_items']->clear_items();
		unset ($_SESSION['transfer_items']);
	}

	$_SESSION['transfer_items'] = new items_cart(ST_LOCTRANSFER);
  $_SESSION['transfer_items']->fixed_asset = isset($_GET['FixedAsset']);
	$_POST['AdjDate'] = new_doc_date();
	if (!is_date_in_fiscalyear($_POST['AdjDate']))
		$_POST['AdjDate'] = end_fiscalyear();
	$_SESSION['transfer_items']->tran_date = $_POST['AdjDate'];	
}

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

if (isset($_POST['Process']))
{

	$tr = &$_SESSION['transfer_items'];
	$input_error = 0;

	if (count($tr->line_items) == 0)	{
		display_error(_("You must enter at least one non empty item line."));
		set_focus('stock_id');
		$input_error = 1;
	}
	if (!check_reference($_POST['ref'], ST_LOCTRANSFER))
	{
		set_focus('ref');
		$input_error = 1;
	} 
	elseif (!is_date($_POST['AdjDate'])) 
	{
		display_error(_("The entered transfer date is invalid."));
		set_focus('AdjDate');
		$input_error = 1;
	} 
	elseif (!is_date_in_fiscalyear($_POST['AdjDate'])) 
	{
		display_error(_("The entered date is out of fiscal year or is closed for further data entry."));
		set_focus('AdjDate');
		$input_error = 1;
	} 
	elseif ($_POST['FromStockLocation'] == $_POST['ToStockLocation'])
	{
		display_error(_("The locations to transfer from and to must be different."));
		set_focus('FromStockLocation');
		$input_error = 1;
	}
	elseif (!$SysPrefs->allow_negative_stock())
	{
		$low_stock = $tr->check_qoh($_POST['FromStockLocation'], $_POST['AdjDate'], true);

		if ($low_stock)
		{
    		display_error(_("The transfer cannot be processed because it would cause negative inventory balance in source location for marked items as of document date or later."));
			$input_error = 1;
		}
	}

	if ($input_error == 1)
		unset($_POST['Process']);
}

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

if (isset($_POST['Process']))
{

	$trans_no = add_stock_transfer($_SESSION['transfer_items']->line_items,
		$_POST['FromStockLocation'], $_POST['ToStockLocation'],
		$_POST['AdjDate'], $_POST['ref'], $_POST['memo_']);
	new_doc_date($_POST['AdjDate']);
	$_SESSION['transfer_items']->clear_items();
	unset($_SESSION['transfer_items']);

   	meta_forward($_SERVER['PHP_SELF'], "AddedID=$trans_no");
} /*end of process credit note */

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

function check_item_data()
{
	if (!check_num('qty', 0) || input_num('qty') == 0)
	{
		display_error(_("The quantity entered must be a positive number."));
		set_focus('qty');
		return false;
	}
   	return true;
}

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

function handle_update_item()
{
	$id = $_POST['LineNo'];
   	if (!isset($_POST['std_cost']))
   		$_POST['std_cost'] = $_SESSION['transfer_items']->line_items[$id]->standard_cost;
   	$_SESSION['transfer_items']->update_cart_item($id, input_num('qty'), $_POST['std_cost']);
	line_start_focus();
}

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

function handle_delete_item($id)
{
	$_SESSION['transfer_items']->remove_from_cart($id);
	line_start_focus();
}

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

function handle_new_item()
{
	if (!isset($_POST['std_cost']))
   		$_POST['std_cost'] = 0;
	add_to_order($_SESSION['transfer_items'], $_POST['stock_id'], input_num('qty'), $_POST['std_cost']);
	line_start_focus();
}

//-----------------------------------------------------------------------------------------------
$id = find_submit('Delete');
if ($id != -1)
	handle_delete_item($id);
	
if (isset($_POST['AddItem']) && check_item_data())
	handle_new_item();

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

if (isset($_POST['CancelItemChanges'])) {
	line_start_focus();
}
//-----------------------------------------------------------------------------------------------

if (isset($_GET['NewTransfer']) || !isset($_SESSION['transfer_items']))
{
	if (isset($_GET['fixed_asset']))
		check_db_has_disposable_fixed_assets(_("There are no fixed assets defined in the system."));
	else
		check_db_has_costable_items(_("There are no inventory items defined in the system (Purchased or manufactured items)."));

	handle_new_order();
}

//-----------------------------------------------------------------------------------------------
start_form();

display_order_header($_SESSION['transfer_items']);

start_table(TABLESTYLE, "width='70%'", 10);
start_row();
echo "<td>";
display_transfer_items(_("Items"), $_SESSION['transfer_items']);
transfer_options_controls();
echo "</td>";
end_row();
end_table(1);

submit_center_first('Update', _("Update"), '', null);
submit_center_last('Process', _("Process Transfer"), '',  'default');

end_form();
end_page();