/**
* Handles validation when somebody is attempting to view an invoice.
* If validation is passsed, we add the necessary
* filters to display the invoice header and page content;
* Global $invoice_id variable set by WPI_Functions::validate_page_hash();
*/
function template_redirect()
{
global $invoice_id, $wpi_settings, $wpi_invoice_object, $post, $current_user;
//** Alwys load styles without checking if given page has an invoice */
wp_enqueue_style('wpi-theme-specific');
wp_enqueue_style('wpi-default-style');
//** Determine if the current page is invoice's page */
if (empty($post->ID) || $wpi_settings['web_invoice_page'] != $post->ID) {
return;
}
//** If invoice_id is passed, run validate_page_hash to make sure this is the right page and invoice_id exists */
if (isset($_GET['invoice_id'])) {
if (WPI_Functions::validate_page_hash(esc_sql($_GET['invoice_id']))) {
//** load global invoice object */
$post_id = wpi_invoice_id_to_post_id($invoice_id);
$wpi_invoice_object = new WPI_Invoice();
$wpi_invoice_object->load_invoice("id={$post_id}");
add_filter('viewable_invoice_types', array($this, 'viewable_types'));
//** Determine if current invoice object is "viewable" */
if (!in_array($wpi_invoice_object->data['post_status'], apply_filters('viewable_invoice_types', array('active')))) {
return;
}
if (isset($wpi_settings['logged_in_only']) && $wpi_settings['logged_in_only'] == 'true') {
if (!current_user_can(WPI_UI::get_capability_by_level($wpi_settings['user_level'])) && !WPI_Functions::user_is_invoice_recipient($wpi_invoice_object)) {
//** Show 404 when invoice doesn't exist */
$not_found = get_query_template('404');
require_once $not_found;
die;
}
}
//** Load front end scripts */
wp_enqueue_script('jquery.validate');
wp_enqueue_script('wpi-gateways');
wp_enqueue_script('jquery.maskedinput');
wp_enqueue_script('wpi-frontend-scripts');
if (!empty($wpi_settings['ga_event_tracking']) && $wpi_settings['ga_event_tracking']['enabled'] == 'true') {
wp_enqueue_script('wpi-ga-tracking', WPI_URL . "/core/js/wpi.ga.tracking.js", array('jquery'));
}
//** Apply Filters to the invoice description */
add_action('wpi_description', 'wpautop');
add_action('wpi_description', 'wptexturize');
add_action('wpi_description', 'shortcode_unautop');
add_action('wpi_description', 'convert_chars');
add_action('wpi_description', 'capital_P_dangit');
//** Declare the variable that will hold our AJAX url for JavaScript purposes */
wp_localize_script('wpi-gateways', 'wpi_ajax', array('url' => admin_url('admin-ajax.php')));
add_action('wp_head', array('WPI_UI', 'frontend_header'));
if ($wpi_settings['replace_page_title_with_subject'] == 'true' || $wpi_settings['hide_page_title'] == 'true') {
add_action('wp_title', array('WPI_UI', 'wp_title'), 0, 3);
}
if ($wpi_settings['replace_page_heading_with_subject'] == 'true' || $wpi_settings['hide_page_title'] == 'true') {
add_action('the_title', array('WPI_UI', 'the_title'), 0, 2);
}
add_action('the_content', array('WPI_UI', 'the_content'), 20);
} else {
//** Show 404 when invoice doesn't exist */
$not_found = get_query_template('404');
require_once $not_found;
die;
}
}
//** Fixed WordPress filters if page is being opened in HTTPS mode */
if (isset($_SERVER['HTTPS']) && $_SERVER["HTTPS"] == "on") {
if (function_exists('force_ssl')) {
add_filter('option_siteurl', 'force_ssl');
add_filter('option_home', 'force_ssl');
add_filter('option_url', 'force_ssl');
add_filter('option_wpurl', 'force_ssl');
add_filter('option_stylesheet_url', 'force_ssl');
add_filter('option_template_url', 'force_ssl');
add_filter('script_loader_src', 'force_ssl');
}
}
//** Lookup functionality */
if (isset($_POST['wp_invoice_lookup_input'])) {
if (!empty($current_user->ID)) {
$id = get_invoice_id($_POST['wp_invoice_lookup_input']);
if (empty($id)) {
//** Show 404 when invoice doesn't exist */
$not_found = get_query_template('404');
require_once $not_found;
die;
}
$invoice = get_invoice($id);
if (current_user_can('level_10') || $current_user->data->user_email == $invoice['user_email']) {
header("location:" . get_invoice_permalink($_POST['wp_invoice_lookup_input']));
die;
} else {
//** Show 404 when invoice doesn't exist */
$not_found = get_query_template('404');
require_once $not_found;
die;
}
} else {
//** Show 404 when invoice doesn't exist */
$not_found = get_query_template('404');
require_once $not_found;
die;
}
}
}
/**
* Returns Invoice Permalink by invoice id
*
* @global array $wpi_settings
* @global object $wpdb
*
* @param type $identificator
*
* @return boolean
*/
function get_invoice_permalink($identificator)
{
global $wpi_settings, $wpdb;
$hash = "";
//** Check Invoice by ID and get hash */
if (empty($identificator)) {
return false;
}
$id = get_invoice_id($identificator);
//** Get hash by post ID */
if (!empty($id)) {
$hash = $wpdb->get_var($wpdb->prepare("SELECT `meta_value` FROM `{$wpdb->postmeta}` WHERE `meta_key` = 'hash' AND `post_id` = '%d'", $id));
}
if (empty($hash) || empty($wpi_settings['web_invoice_page'])) {
return false;
}
if (get_option("permalink_structure")) {
return get_permalink($wpi_settings['web_invoice_page']) . "?invoice_id=" . $hash;
} else {
//** check if page is on front-end */
if (get_option('page_on_front') == $wpi_settings['web_invoice_page']) {
return get_permalink($wpi_settings['web_invoice_page']) . "?invoice_id=" . $hash;
} else {
return get_permalink($wpi_settings['web_invoice_page']) . "&invoice_id=" . $hash;
}
}
}