<?php

/**
* The Third Party integration with the WooCommerce plugin.
*
* @since 1.0.5
* @since 1.6.6 Added function_exists check for compatibility
* @package LiteSpeed_Cache
* @subpackage LiteSpeed_Cache/thirdparty
* @author LiteSpeed Technologies <info@litespeedtech.com>
*/

namespace LiteSpeed\Thirdparty;

defined('WPINC') || exit();

use LiteSpeed\API;
use LiteSpeed\Base;

class WooCommerce extends Base
{
const O_CACHE_TTL_FRONTPAGE = Base::O_CACHE_TTL_FRONTPAGE;

const CACHETAG_SHOP = 'WC_S';
const CACHETAG_TERM = 'WC_T.';
const O_UPDATE_INTERVAL = 'wc_update_interval';
const O_CART_VARY = 'wc_cart_vary';
const O_PQS_CS = 0; // flush product on quantity + stock change, categories on stock change
const O_PS_CS = 1; // flush product and categories on stock change
const O_PS_CN = 2; // flush product on stock change, categories no flush
const O_PQS_CQS = 3; // flush product and categories on quantity + stock change

const ESI_PARAM_ARGS = 'wc_args';
const ESI_PARAM_POSTID = 'wc_post_id';
const ESI_PARAM_NAME = 'wc_name';
const ESI_PARAM_PATH = 'wc_path';
const ESI_PARAM_LOCATED = 'wc_located';

private $esi_enabled;

/**
* Detects if WooCommerce is installed.
*
* @since 1.0.5
* @access public
*/
public static function detect()
{
if (!defined('WOOCOMMERCE_VERSION')) {
return;
}

self::cls()->add_hooks();
}

/**
* Add hooks to woo actions
*
* @since 1.6.3
* @access public
*/
public function add_hooks()
{
$this->_option_append();

$this->esi_enabled = apply_filters('litespeed_esi_status', false);

add_action('litespeed_control_finalize', array($this, 'set_control'));
add_action('litespeed_tag_finalize', array($this, 'set_tag'));

// Purging a product on stock change should only occur during product purchase. This function will add the purging callback when an order is complete.
add_action('woocommerce_product_set_stock', array($this, 'purge_product'));
add_action('woocommerce_variation_set_stock', array($this, 'purge_product')); // #984479 Update variations stock

add_action('comment_post', array($this, 'add_review'), 10, 3);

if ($this->esi_enabled) {
if (function_exists('is_shop') && !is_shop()) {
add_action('litespeed_tpl_normal', array($this, 'set_block_template'));
// No need for add-to-cart button
// add_action( 'litespeed_esi_load-wc-add-to-cart-form', array( $this, 'load_add_to_cart_form_block' ) ) ;

add_action('litespeed_esi_load-storefront-cart-header', array($this, 'load_cart_header'));
add_action('litespeed_esi_load-widget', array($this, 'register_post_view'));
}

if (function_exists('is_product') && is_product()) {
add_filter('litespeed_esi_params', array($this, 'add_post_id'), 10, 2);
}
}

if (is_admin()) {
add_action('litespeed_api_purge_post', array($this, 'backend_purge')); //todo
add_action('delete_term_relationships', array($this, 'delete_rel'), 10, 2);
add_action('litespeed_settings_tab', array($this, 'settings_add_tab'));
add_action('litespeed_settings_content', array($this, 'settings_add_content'));
add_filter('litespeed_widget_default_options', array($this, 'wc_widget_default'), 10, 2);
}

if (apply_filters('litespeed_conf', self::O_CART_VARY)) {
add_filter('litespeed_vary_cookies', function ($list) {
$list[] = 'woocommerce_cart_hash';
return array_unique($list);
});
}
}

/**
* Purge esi private tag
*
* @since 1.6.3
* @access public
*/
public function purge_esi()
{
do_action('litespeed_debug', '3rd woo purge ESI in action: ' . current_filter());
do_action('litespeed_purge_private_esi', 'storefront-cart-header');
}

/**
* Purge private all
*
* @since 3.0
* @access public
*/
public function purge_private_all()
{
do_action('litespeed_purge_private_all');
}

/**
* Check if need to give an ESI block for cart
*
* @since 1.7.2
* @access public
*/
public function check_if_need_esi($template)
{
if ($this->vary_needed()) {
do_action('litespeed_debug', 'API: 3rd woo added ESI');
add_action('litespeed_tpl_normal', array($this, 'set_swap_header_cart'));
}

return $template;
}

/**
* Keep vary on if cart is not empty
*
* @since 1.7.2
* @access public
*/
public function vary_maintain($vary)
{
if ($this->vary_needed()) {
do_action('litespeed_debug', 'API: 3rd woo added vary due to cart not empty');
$vary['woo_cart'] = 1;
}

return $vary;
}

/**
* Check if vary need to be on based on cart
*
* @since 1.7.2
* @access private
*/
private function vary_needed()
{
if (!function_exists('WC')) {
return false;
}

$woocom = WC();
if (!$woocom) {
return false;
}

if (is_null($woocom->cart)) {
return false;
}
return $woocom->cart->get_cart_contents_count() > 0;
}

/**
* Hooked to the litespeed_is_not_esi_template action.
* If the request is not an esi request, I want to set my own hook in woocommerce_before_template_part to see if it's something I can ESI.
*
* @since 1.1.0
* @access public
*/
public function set_block_template()
{
add_action('woocommerce_before_template_part', array($this, 'block_template'), 999, 4);
}

/**
* Hooked to the litespeed_is_not_esi_template action.
* If the request is not an esi request, I want to set my own hook
* in storefront_header to see if it's something I can ESI.
*
* Will remove storefront_header_cart in storefront_header.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
*/
public function set_swap_header_cart()
{
$priority = has_action('storefront_header', 'storefront_header_cart');
if ($priority !== false) {
remove_action('storefront_header', 'storefront_header_cart', $priority);
add_action('storefront_header', array($this, 'esi_cart_header'), $priority);
}
}

/**
* Hooked to the woocommerce_before_template_part action.
* Checks if the template contains 'add-to-cart'. If so, and if I want to ESI the request, block it and build my esi code block.
*
* The function parameters will be passed to the esi request.
*
* @since 1.1.0
* @access public
*/
public function block_template($template_name, $template_path, $located, $args)
{
if (strpos($template_name, 'add-to-cart') === false) {
if (strpos($template_name, 'related.php') !== false) {
remove_action('woocommerce_before_template_part', array($this, 'block_template'), 999);
add_filter('woocommerce_related_products_args', array($this, 'add_related_tags'));
add_action('woocommerce_after_template_part', array($this, 'end_template'), 999);
}
return;
}
return;

// todo: wny not use?

global $post;
$params = array(
self::ESI_PARAM_ARGS => $args,
self::ESI_PARAM_NAME => $template_name,
self::ESI_PARAM_POSTID => $post->ID,
self::ESI_PARAM_PATH => $template_path,
self::ESI_PARAM_LOCATED => $located,
);
add_action('woocommerce_after_add_to_cart_form', array($this, 'end_form'));
add_action('woocommerce_after_template_part', array($this, 'end_form'), 999);
echo apply_filters('litespeed_esi_url', 'wc-add-to-cart-form', 'WC_CART_FORM', $params);
echo apply_filters('litespeed_clean_wrapper_begin', '');
}

/**
* Hooked to the woocommerce_after_add_to_cart_form action.
* If this is hit first, clean the buffer and remove this function and
* end_template.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
*/
public function end_form($template_name = '')
{
if (!empty($template_name) && strpos($template_name, 'add-to-cart') === false) {
return;
}
echo apply_filters('litespeed_clean_wrapper_end', '');
remove_action('woocommerce_after_add_to_cart_form', array($this, 'end_form'));
remove_action('woocommerce_after_template_part', array($this, 'end_form'), 999);
}

/**
* If related products are loaded, need to add the extra product ids.
*
* The page will be purged if any of the products are changed.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
* @param array $args The arguments used to build the related products section.
* @return array The unchanged arguments.
*/
public function add_related_tags($args)
{
if (empty($args) || !isset($args['post__in'])) {
return $args;
}
$related_posts = $args['post__in'];
foreach ($related_posts as $related) {
do_action('litespeed_tag_add_post', $related);
}
return $args;
}

/**
* Hooked to the woocommerce_after_template_part action.
* If the template contains 'add-to-cart', clean the buffer.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
* @param type $template_name
*/
public function end_template($template_name)
{
if (strpos($template_name, 'related.php') !== false) {
remove_action('woocommerce_after_template_part', array($this, 'end_template'), 999);
$this->set_block_template();
}
}

/**
* Hooked to the storefront_header header.
* If I want to ESI the request, block it and build my esi code block.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
*/
public function esi_cart_header()
{
echo apply_filters('litespeed_esi_url', 'storefront-cart-header', 'STOREFRONT_CART_HEADER');
}

/**
* Hooked to the litespeed_esi_load-storefront-cart-header action.
* Generates the cart header for esi display.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
*/
public function load_cart_header()
{
storefront_header_cart();
}

/**
* Hooked to the litespeed_esi_load-wc-add-to-cart-form action.
* Parses the esi input parameters and generates the add to cart form
* for esi display.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
* @global type $post
* @global type $wp_query
* @param type $params
*/
public function load_add_to_cart_form_block($params)
{
global $post, $wp_query;
$post = get_post($params[self::ESI_PARAM_POSTID]);
$wp_query->setup_postdata($post);
function_exists('wc_get_template') && wc_get_template($params[self::ESI_PARAM_NAME], $params[self::ESI_PARAM_ARGS], $params[self::ESI_PARAM_PATH]);
}

/**
* Update woocommerce when someone visits a product and has the
* recently viewed products widget.
*
* Currently, this widget should not be cached.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
* @param array $params Widget parameter array
*/
public function register_post_view($params)
{
if ($params[API::PARAM_NAME] !== 'WC_Widget_Recently_Viewed') {
return;
}
if (!isset($params[self::ESI_PARAM_POSTID])) {
return;
}
$id = $params[self::ESI_PARAM_POSTID];
$esi_post = get_post($id);
$product = function_exists('wc_get_product') ? wc_get_product($esi_post) : false;

if (empty($product)) {
return;
}

global $post;
$post = $esi_post;
function_exists('wc_track_product_view') && wc_track_product_view();
}

/**
* Adds the post id to the widget ESI parameters for the Recently Viewed widget.
*
* This is needed in the ESI request to update the cookie properly.
*
* @since 1.1.0
* @access public
*/
public function add_post_id($params, $block_id)
{
if ($block_id == 'widget') {
if ($params[API::PARAM_NAME] == 'WC_Widget_Recently_Viewed') {
$params[self::ESI_PARAM_POSTID] = get_the_ID();
}
}

return $params;
}

/**
* Hooked to the litespeed_widget_default_options filter.
*
* The recently viewed widget must be esi to function properly.
* This function will set it to enable and no cache by default.
*
* @since 1.1.0
* @access public
*/
public function wc_widget_default($options, $widget)
{
if (!is_array($options)) {
return $options;
}
$widget_name = get_class($widget);
if ($widget_name === 'WC_Widget_Recently_Viewed') {
$options[API::WIDGET_O_ESIENABLE] = API::VAL_ON2;
$options[API::WIDGET_O_TTL] = 0;
} elseif ($widget_name === 'WC_Widget_Recent_Reviews') {
$options[API::WIDGET_O_ESIENABLE] = API::VAL_ON;
$options[API::WIDGET_O_TTL] = 86400;
}
return $options;
}

/**
* Set WooCommerce cache tags based on page type.
*
* @since 1.0.9
* @since 1.6.3 Removed static
* @access public
*/
public function set_tag()
{
$id = get_the_ID();
if ($id === false) {
return;
}

// Check if product has a cache ttl limit or not
$sale_from = (int) get_post_meta($id, '_sale_price_dates_from', true);
$sale_to = (int) get_post_meta($id, '_sale_price_dates_to', true);
$now = current_time('timestamp');
$ttl = false;
if ($sale_from && $now < $sale_from) {
$ttl = $sale_from - $now;
} elseif ($sale_to && $now < $sale_to) {
$ttl = $sale_to - $now;
}
if ($ttl && $ttl < apply_filters('litespeed_control_ttl', 0)) {
do_action('litespeed_control_set_ttl', $ttl, "WooCommerce set scheduled TTL to $ttl");
}

if (function_exists('is_shop') && is_shop()) {
do_action('litespeed_tag_add', self::CACHETAG_SHOP);
}
if (function_exists('is_product_taxonomy') && !is_product_taxonomy()) {
return;
}
if (isset($GLOBALS['product_cat']) && is_string($GLOBALS['product_cat'])) {
// todo: need to check previous woo version to find if its from old woo versions or not!
$term = get_term_by('slug', $GLOBALS['product_cat'], 'product_cat');
} elseif (isset($GLOBALS['product_tag']) && is_string($GLOBALS['product_tag'])) {
$term = get_term_by('slug', $GLOBALS['product_tag'], 'product_tag');
} else {
$term = false;
}

if ($term === false) {
return;
}
while (isset($term)) {
do_action('litespeed_tag_add', self::CACHETAG_TERM . $term->term_id);
if ($term->parent == 0) {
break;
}
$term = get_term($term->parent);
}
}

/**
* Check if the page is cacheable according to WooCommerce.
*
* @since 1.0.5
* @since 1.6.3 Removed static
* @access public
* @param string $esi_id The ESI block id if a request is an ESI request.
* @return boolean True if cacheable, false if not.
*/
public function set_control($esi_id)
{
if (!apply_filters('litespeed_control_cacheable', false)) {
return;
}

/**
* Avoid possible 500 issue
* @since 1.6.2.1
*/
if (!function_exists('WC')) {
return;
}

$woocom = WC();
if (!$woocom || empty($woocom->session)) {
return;
}

// For later versions, DONOTCACHEPAGE should be set.
// No need to check uri/qs.
if (version_compare($woocom->version, '1.4.2', '>=')) {
if (version_compare($woocom->version, '3.2.0', '<') && defined('DONOTCACHEPAGE') && DONOTCACHEPAGE) {
do_action('litespeed_control_set_nocache', '3rd party woocommerce not cache by constant');
return;
} elseif (version_compare($woocom->version, '2.1.0', '>=')) {
$err = false;

if (!function_exists('wc_get_page_id')) {
return;
}
/**
* From woo/inc/class-wc-cache-helper.php:prevent_caching()
* @since 1.4
*/
$page_ids = array_filter(array(wc_get_page_id('cart'), wc_get_page_id('checkout'), wc_get_page_id('myaccount')));
if (isset($_GET['download_file']) || isset($_GET['add-to-cart']) || is_page($page_ids)) {
$err = 'woo non cacheable pages';
} elseif (function_exists('wc_notice_count') && wc_notice_count() > 0) {
$err = 'has wc notice';
}

if ($err) {
do_action('litespeed_control_set_nocache', '3rd party woocommerce not cache due to ' . $err);
return;
}
}
return;
}

$uri = esc_url($_SERVER['REQUEST_URI']);
$uri_len = strlen($uri);
if ($uri_len < 5) {
return;
}

if (in_array($uri, array('cart/', 'checkout/', 'my-account/', 'addons/', 'logout/', 'lost-password/', 'product/'))) {
// why contains `product`?
do_action('litespeed_control_set_nocache', 'uri in cart/account/user pages');
return;
}

$qs = sanitize_text_field($_SERVER['QUERY_STRING']);
$qs_len = strlen($qs);
if (!empty($qs) && $qs_len >= 12 && strpos($qs, 'add-to-cart=') === 0) {
do_action('litespeed_control_set_nocache', 'qs contains add-to-cart');
return;
}
}

/**
* Purge a product page and related pages (based on settings) on checkout.
*
* @since 1.0.9
* @since 1.6.3 Removed static
* @access public
* @param WC_Product $product
*/
public function purge_product($product)
{
do_action('litespeed_debug', '[3rd] Woo Purge [pid] ' . $product->get_id());

$do_purge = function ($action, $debug = '') use ($product) {
$config = apply_filters('litespeed_conf', self::O_UPDATE_INTERVAL);
if (is_null($config)) {
$config = self::O_PQS_CS;
}

if ($config === self::O_PQS_CQS) {
$action();
if ($debug) {
do_action('litespeed_debug', $debug);
}
} elseif ($config !== self::O_PQS_CS && $product->is_in_stock()) {
do_action('litespeed_debug', '[3rd] Woo No purge needed [option] ' . $config);
return false;
} elseif ($config !== self::O_PS_CN && !$product->is_in_stock()) {
$action();
if ($debug) {
do_action('litespeed_debug', $debug);
}
}
return true;
};

if (
!$do_purge(function () use ($product) {
$this->backend_purge($product->get_id());
})
) {
return;
}

do_action('litespeed_purge_post', $product->get_id());

// Check if is variation, purge stock too #984479
if ($product->is_type('variation')) {
do_action('litespeed_purge_post', $product->get_parent_id());
}

// Check if WPML is enabled ##972971
if (defined('WPML_PLUGIN_BASENAME')) {
// Check if it is a variable product and get post/parent ID
$wpml_purge_id = $product->is_type('variation') ? $product->get_parent_id() : $product->get_id();
$type = apply_filters('wpml_element_type', get_post_type($wpml_purge_id));
$trid = apply_filters('wpml_element_trid', false, $wpml_purge_id, $type);
$translations = apply_filters('wpml_get_element_translations', array(), $trid, $type);
foreach ($translations as $lang => $translation) {
do_action('litespeed_debug', '[3rd] Woo WPML purge language: ' . $translation->language_code . ' , post ID: ' . $translation->element_id);
do_action('litespeed_purge_post', $translation->element_id);
// use the $translation->element_id as it is post ID of other languages
}

// Check other languages category and purge if configured.
// wp_get_post_terms() only returns default language category ID
$default_cats = wp_get_post_terms($wpml_purge_id, 'product_cat');
$languages = apply_filters('wpml_active_languages', null);

foreach ($default_cats as $default_cat) {
foreach ($languages as $language) {
$tr_cat_id = icl_object_id($default_cat->term_id, 'product_cat', false, $language['code']);
$do_purge(function () use ($tr_cat_id) {
do_action('litespeed_purge', self::CACHETAG_TERM . $tr_cat_id);
}, '[3rd] Woo Purge WPML category [language] ' . $language['code'] . ' [cat] ' . $tr_cat_id);
}
}
}
}

/**
* Delete object-term relationship. If the post is a product and
* the term ids array is not empty, will add purge tags to the deleted
* terms.
*
* @since 1.0.9
* @since 1.6.3 Removed static
* @access public
* @param int $post_id Object ID.
* @param array $term_ids An array of term taxonomy IDs.
*/
public function delete_rel($post_id, $term_ids)
{
if (!function_exists('wc_get_product')) {
return;
}

if (empty($term_ids) || wc_get_product($post_id) === false) {
return;
}
foreach ($term_ids as $term_id) {
do_action('litespeed_purge', self::CACHETAG_TERM . $term_id);
}
}

/**
* Purge a product's categories and tags pages in case they are affected.
*
* @since 1.0.9
* @since 1.6.3 Removed static
* @access public
* @param int $post_id Post id that is about to be purged
*/
public function backend_purge($post_id)
{
if (!function_exists('wc_get_product')) {
return;
}

if (!isset($post_id) || wc_get_product($post_id) === false) {
return;
}

$cats = $this->get_cats($post_id);
if (!empty($cats)) {
foreach ($cats as $cat) {
do_action('litespeed_purge', self::CACHETAG_TERM . $cat);
}
}

if (!function_exists('wc_get_product_terms')) {
return;
}

$tags = wc_get_product_terms($post_id, 'product_tag', array('fields' => 'ids'));
if (!empty($tags)) {
foreach ($tags as $tag) {
do_action('litespeed_purge', self::CACHETAG_TERM . $tag);
}
}
}

/**
* When a product has a new review added, purge the recent reviews widget.
*
* @since 1.1.0
* @since 1.6.3 Removed static
* @access public
* @param $unused
* @param integer $comment_approved Whether the comment is approved or not.
* @param array $commentdata Information about the comment.
*/
public function add_review($unused, $comment_approved, $commentdata)
{
if (!function_exists('wc_get_product')) {
return;
}

$post_id = $commentdata['comment_post_ID'];
if ($comment_approved !== 1 || !isset($post_id) || wc_get_product($post_id) === false) {
return;
}

global $wp_widget_factory;
if (!isset($wp_widget_factory->widgets['WC_Widget_Recent_Reviews'])) {
return;
}

$recent_reviews = $wp_widget_factory->widgets['WC_Widget_Recent_Reviews'];
if (!is_null($recent_reviews)) {
do_action('litespeed_tag_add_widget', $recent_reviews->id);
}
}

/**
* Append new options
*
* @since 1.6.3 Removed static
* @since 3.0 new API
*/
private function _option_append()
{
// Append option save value filter
do_action('litespeed_conf_multi_switch', self::O_UPDATE_INTERVAL, 3); // This need to be before conf_append

do_action('litespeed_conf_append', self::O_UPDATE_INTERVAL, false);
do_action('litespeed_conf_append', self::O_CART_VARY, false);
}

/**
* Hooked to `litespeed_settings_tab` action.
* Adds the integration configuration options (currently, to determine purge rules)
*
* @since 1.6.3 Removed static
*/
public function settings_add_tab($setting_page)
{
if ($setting_page != 'cache') {
return;
}

require 'woocommerce.tab.tpl.php';
}

/**
* Hook to show config content
*
* @since 3.0
*/
public function settings_add_content($setting_page)
{
if ($setting_page != 'cache') {
return;
}

require 'woocommerce.content.tpl.php';
}

/**
* Helper function to select the function(s) to use to get the product
* category ids.
*
* @since 1.0.10
* @since 1.6.3 Removed static
* @access private
* @param int $product_id The product id
* @return array An array of category ids.
*/
private function get_cats($product_id)
{
if (!function_exists('WC')) {
return;
}

$woocom = WC();
if (isset($woocom) && version_compare($woocom->version, '2.5.0', '>=') && function_exists('wc_get_product_cat_ids')) {
return wc_get_product_cat_ids($product_id);
}
$product_cats = wp_get_post_terms($product_id, 'product_cat', array('fields' => 'ids'));
foreach ($product_cats as $product_cat) {
$product_cats = array_merge($product_cats, get_ancestors($product_cat, 'product_cat'));
}

return $product_cats;
}

/**
* 3rd party prepload
*
* @since 2.9.8.4
*/
public static function preload()
{
/**
* Auto puge for WooCommerce Advanced Bulk Edit plugin,
* Bulk edit hook need to add to preload as it will die before detect.
*/
add_action('wp_ajax_wpmelon_adv_bulk_edit', __CLASS__ . '::bulk_edit_purge', 1);
}

/**
* Auto puge for WooCommerce Advanced Bulk Edit plugin,
*
* @since 2.9.8.4
*/
public static function bulk_edit_purge()
{
if (empty($_POST['type']) || $_POST['type'] != 'saveproducts' || empty($_POST['data'])) {
return;
}

/*
* admin-ajax form-data structure
* array(
* "type" => "saveproducts",
* "data" => array(
* "column1" => "464$###0$###2#^#463$###0$###4#^#462$###0$###6#^#",
* "column2" => "464$###0$###2#^#463$###0$###4#^#462$###0$###6#^#"
* )
* )
*/
$stock_string_arr = array();
foreach ($_POST['data'] as $stock_value) {
$stock_string_arr = array_merge($stock_string_arr, explode('#^#', $stock_value));
}

$lscwp_3rd_woocommerce = new self();

if (count($stock_string_arr) < 1) {
return;
}

foreach ($stock_string_arr as $edited_stock) {
$product_id = strtok($edited_stock, '$');
$product = wc_get_product($product_id);

if (empty($product)) {
do_action('litespeed_debug', '3rd woo purge: ' . $product_id . ' not found.');
continue;
}

$lscwp_3rd_woocommerce->purge_product($product);
}
}
}