<?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>.
***********************************************************************/
$page_security = 'SA_UOM';
$path_to_root = '../..';
include($path_to_root . '/includes/session.inc');

page(_($help_context = 'Units of Measure'));

include_once($path_to_root . '/includes/ui.inc');
include_once($path_to_root . '/inventory/includes/db/items_units_db.inc');

simple_page_mode(false);

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

if ($Mode=='ADD_ITEM' || $Mode=='UPDATE_ITEM') {

	//initialise no input errors assumed initially before we test
	$input_error = 0;

	if (strlen($_POST['abbr']) == 0) {
		$input_error = 1;
		display_error(_('The unit of measure code cannot be empty.'));
		set_focus('abbr');
	}
	if (strlen(db_escape($_POST['abbr']))>(20+2)) {
		$input_error = 1;
		display_error(_('The unit of measure code is too long.'));
		set_focus('abbr');
	}
	if (strlen($_POST['description']) == 0) {
		$input_error = 1;
		display_error(_('The unit of measure description cannot be empty.'));
		set_focus('description');
	}
	if ($input_error != 1 && $selected_id == '') {
		$existing = get_item_unit($_POST['abbr']);
		if ($existing) {
			$input_error = 1;
			display_error(_('This unit of measure abbreviation already exists. Please use a different code.'));
			set_focus('abbr');
		}
	}

	if ($input_error !=1) {
		write_item_unit($selected_id, $_POST['abbr'], $_POST['description'], $_POST['decimals'] );
		if($selected_id != '')
			display_notification(_('Selected unit has been updated'));
		else
			display_notification(_('New unit has been added'));
		$Mode = 'RESET';
	}
}

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

if ($Mode == 'Delete') {

	// PREVENT DELETES IF DEPENDENT RECORDS IN 'stock_master'

	if (item_unit_used($selected_id))
		display_error(_('Cannot delete this unit of measure because items have been created using this unit.'));
	else {
		delete_item_unit($selected_id);
		display_notification(_('Selected unit has been deleted'));
	}
	$Mode = 'RESET';
}

if ($Mode == 'RESET') {
	$selected_id = '';
	$sav = get_post('show_inactive');
	unset($_POST);
	$_POST['show_inactive'] = $sav;
}

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

$result = get_all_item_units(check_value('show_inactive'));

start_form();
start_table(TABLESTYLE, "width='40%'");
$th = array(_('Unit'), _('Description'), _('Decimals'), '', '');
inactive_control_column($th);

table_header($th);
$k = 0; //row colour counter

while ($myrow = db_fetch($result)) {

	alt_table_row_color($k);

	label_cell($myrow['abbr']);
	label_cell($myrow['name']);
	label_cell(($myrow['decimals']==-1?_('User Quantity Decimals'):$myrow['decimals']));
	$id = html_specials_encode($myrow['abbr']);
	inactive_control_cell($id, $myrow['inactive'], 'item_units', 'abbr');
	edit_button_cell('Edit'.$id, _('Edit'));
	delete_button_cell('Delete'.$id, _('Delete'));
	end_row();
}

inactive_control_row($th);
end_table(1);

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

start_table(TABLESTYLE2);

if ($selected_id != '') {
	if ($Mode == 'Edit') {
		//editing an existing item category

		$myrow = get_item_unit($selected_id);

		$_POST['abbr'] = $myrow['abbr'];
		$_POST['description']  = $myrow['name'];
		$_POST['decimals']  = $myrow['decimals'];
	}
	hidden('selected_id', $myrow['abbr']);
}
if ($selected_id != '' && item_unit_used($selected_id)) {
	label_row(_('Unit Abbreviation:'), $_POST['abbr']);
	hidden('abbr', $_POST['abbr']);
}
else
	text_row(_('Unit Abbreviation:'), 'abbr', null, 20, 20);
text_row(_('Descriptive Name:'), 'description', null, 40, 40);

number_list_row(_('Decimal Places:'), 'decimals', null, 0, 6, _('User Quantity Decimals'));

end_table(1);

submit_add_or_update_center($selected_id == '', '', 'both');

end_form();

end_page();
