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<?php
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// $Id$
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/**
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* @file
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* This file contains the callbacks for the default line items for orders and
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* the various functions that make line items work.
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*
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* Line items are defined using hook_line_item() and use a callback to handle
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* the different processes involved in line item viewing/editing/calculating.
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* The default line items are defined in uc_order_line_item() in uc_order.module.
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*/
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/**
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* Handle the subtotal line item.
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*/
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function uc_line_item_subtotal($op, $arg1) {
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switch ($op) {
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case 'load':
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$lines[] = array(
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'id' => 'subtotal',
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'title' => t('Subtotal'),
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'amount' => uc_order_get_total($arg1, TRUE),
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);
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return $lines;
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case 'cart-preview':
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$subtotal = 0;
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foreach ($arg1 as $item) {
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$total = ($item->qty) ? $item->qty * $item->price : $item->price;
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$subtotal += $total;
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}
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if (module_exists('uc_payment') && variable_get('uc_pane_payment_enabled', TRUE)) {
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uc_add_js("\$(document).ready( function() { set_line_item('subtotal', '". t('Subtotal') ."', ". $subtotal .", -10); } );", 'inline');
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}
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break;
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}
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}
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/**
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* Handle the total line item.
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*/
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function uc_line_item_total($op, $arg1) {
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switch ($op) {
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case 'display':
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$lines[] = array(
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'id' => 'total',
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'title' => t('Total'),
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'amount' => uc_order_get_total($arg1),
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);
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return $lines;
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}
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}
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/**
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* Calculate the total value of line items of types that should be calculated.
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*/
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function uc_line_items_calculate($order) {
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$total = 0;
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if (is_array($order->line_items)) {
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foreach ($order->line_items as $item) {
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if (_line_item_data($item['type'], 'calculated') == TRUE) {
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$total += $item['amount'];
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}
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}
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}
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return $total;
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}
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/**
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* Update a line item.
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*/
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function uc_order_update_line_item($id, $title, $amount) {
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db_query("UPDATE {uc_order_line_items} SET title = '%s', amount = %f "
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."WHERE line_item_id = %d", $title, $amount, $id);
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return TRUE;
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}
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/**
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* Delete a line item, or pass $order as TRUE and $id as an order_id to delete
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* every line item attached to an order.
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*/
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function uc_order_delete_line_item($id, $order = FALSE) {
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if ($order === FALSE) {
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db_query("DELETE FROM {uc_order_line_items} WHERE line_item_id = %d", $id);
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}
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else {
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db_query("DELETE FROM {uc_order_line_items} WHERE order_id = %d", $id);
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}
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return TRUE;
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}
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function uc_order_line_item_add($order_id, $type, $title, $amount, $weight = NULL) {
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if (is_null($weight)) {
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$weight = _line_item_data($type, 'weight');
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}
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db_query("INSERT INTO {uc_order_line_items} (order_id, type, title, amount, weight) VALUES (%d, '%s', '%s', %f, %d)", $order_id, $type, $title, $amount, $weight);
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return TRUE;
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}
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/**
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* Build a list of line items defined in the enabled modules.
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*/
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function _line_item_list($action = NULL) {
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static $items;
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if (count($items) > 0 && $action !== 'rebuild') {
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return $items;
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}
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$items = module_invoke_all('line_item', NULL);
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foreach ($items as $i => $value) {
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$items[$i]['enabled'] = variable_get('uc_li_'. $items[$i]['id'] .'_enabled', (!isset($items[$i]['enabled']) ? TRUE : $items[$i]['enabled']));
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$items[$i]['weight'] = variable_get('uc_li_'. $items[$i]['id'] .'_weight', (!isset($items[$i]['weight']) ? 1 : $items[$i]['weight']));
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}
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usort($items, 'uc_weight_sort');
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return $items;
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}
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/**
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* Return data from a line item by ID and the array key.
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*/
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function _line_item_data($item_id, $key) {
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$items = _line_item_list();
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foreach ($items as $item) {
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if ($item['id'] == $item_id) {
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return $item[$key];
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}
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}
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}
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