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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 Conditional Action hooks and functions necessary to
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* make the tax related entity, conditions, events, and actions work.
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*/
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/******************************************************************************
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* Conditional Action Hooks *
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******************************************************************************/
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/**
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* Implementation of hook_ca_entity().
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*/
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function uc_taxes_ca_entity() {
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$entities['tax'] = array(
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'#title' => t('Tax rule'),
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'#type' => 'object',
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);
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return $entities;
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}
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/**
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* Implementation of hook_ca_trigger().
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*
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* Register an event for each tax rule in {uc_taxes}.
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*/
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function uc_taxes_ca_trigger() {
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$triggers = array();
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$taxes = uc_taxes_get_rates();
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foreach ($taxes as $tax) {
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$triggers['calculate_tax_'. $tax->id] = array(
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'#title' => t('Calculate @name', array('@name' => $tax->name)),
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'#category' => 'uc_taxes',
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'#arguments' => array(
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'order' => array('#entity' => 'order', '#title' => t('Order')),
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'tax' => array('#entity' => 'tax', '#title' => t('Tax rule')),
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'user' => array('#entity' => 'user', '#title' => t('User account')),
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),
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);
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}
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return $triggers;
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}
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/**
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* Implementation of hook_action_info().
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*/
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function uc_taxes_ca_action() {
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$actions = array();
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$actions['uc_taxes_action_apply_tax'] = array(
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'#title' => t('Charge a tax'),
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'#category' => t('Taxes'),
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'#arguments' => array(
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'order' => array('#entity' => 'order', '#title' => t('Order')),
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'tax' => array('#entity' => 'tax', '#title' => t('Tax')),
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),
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);
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return $actions;
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}
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/**
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* Workflow-ng action callback to calculate a tax.
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*
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* @param $order
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* The order object being considered.
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* @param $tax
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* The tax rule calculating the amount.
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* @return
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* The line item array representing the amount of tax.
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*/
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function uc_taxes_action_apply_tax($order, $tax) {
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$amount = 0;
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if (is_array($order->products)) {
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foreach ($order->products as $item) {
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$node = node_load($item->nid);
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if (in_array($node->type, $tax->taxed_product_types)) {
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$amount += $item->price * $item->qty * $tax->rate;
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}
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}
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}
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$taxed_line_items = $tax->taxed_line_items;
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if (is_array($order->line_items) && is_array($taxed_line_items)) {
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foreach ($order->line_items as $key => $line_item) {
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if ($line_item['type'] == 'tax' && $line_item['title'] == $tax->name) {
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// Don't tax yourself.
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continue;
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}
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if (in_array($line_item['type'], $taxed_line_items)) {
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$amount += $line_item['amount'] * $tax->rate;
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}
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}
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}
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if (isset($taxed_line_items['tax'])) {
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foreach ($_SESSION['taxes'] as $other_tax) {
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$amount += $other_tax['amount'] * $tax->rate;
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}
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}
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if ($amount) {
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$line_item = (object)array('id' => $tax->id, 'name' => $tax->name, 'amount' => $amount, 'weight' => $tax->weight);
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return $line_item;
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}
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}
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/**
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* Implementation of hook_ca_predicate().
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*
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* Create a predicate for each event corresponding to a tax rule.
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*/
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function uc_taxes_ca_predicate() {
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$predicates = array();
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$taxes = uc_taxes_get_rates();
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foreach ($taxes as $tax) {
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$predicates['uc_taxes_'. $tax->id] = array(
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'#title' => $tax->name,
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'#class' => 'uc_taxes',
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'#trigger' => 'calculate_tax_'. $tax->id,
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'#status' => 1,
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'#actions' => array(
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array(
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'#name' => 'uc_taxes_action_apply_tax',
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'#title' => t('Apply @tax', array('@tax' => $tax->name)),
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'#argument_map' => array(
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'order' => 'order',
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'tax' => 'tax',
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),
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),
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),
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);
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}
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return $predicates;
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}
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