/**
* Hooks upgrade function to init.
*
* @since 1.2
*/
public static function init()
{
self::$active_version = get_option(WC_Subscriptions_Admin::$option_prefix . '_active_version', '0');
if (isset($_GET['wcs_upgrade_step']) || version_compare(self::$active_version, WC_Subscriptions::$version, '<') && 'true' != get_transient('wc_subscriptions_is_upgrading')) {
// If an admin hits the front of the site, run the updates, otherwise, run it as soon as someone hits the backend
if (current_user_can('update_plugins')) {
add_action('init', __CLASS__ . '::upgrade', 1);
} else {
add_action('admin_init', __CLASS__ . '::upgrade', 1);
}
}
}
/**
* Hooks upgrade function to init.
*
* @since 1.2
*/
public static function init()
{
self::$active_version = get_option(WC_Subscriptions_Admin::$option_prefix . '_active_version', '0');
if (isset($_GET['wcs_upgrade_step']) || version_compare(self::$active_version, WC_Subscriptions::$version, '<') && 'true' != get_transient('wc_subscriptions_is_upgrading')) {
// If an admin hits the front of the site, run the updates, otherwise, run it as soon as someone hits the backend
if (current_user_can('update_plugins')) {
add_action('init', __CLASS__ . '::upgrade', 1);
} else {
add_action('admin_init', __CLASS__ . '::upgrade', 1);
}
}
// Maybe upgrade to WC 2.0 data structure (after WC has run it's upgrader)
self::$is_wc_version_2 = version_compare(get_option('woocommerce_db_version'), '2.0', '>=');
self::$updated_to_wc_2_0 = get_option('wcs_updated_to_wc_2_0', 'false');
if (self::$is_wc_version_2 && 'true' != self::$updated_to_wc_2_0) {
if (current_user_can('update_plugins')) {
add_action('init', __CLASS__ . '::upgrade_to_latest_wc', 2);
} else {
add_action('admin_init', __CLASS__ . '::upgrade_to_latest_wc', 2);
}
}
}
/**
* Gets an array of subscriptions from the v1.5 database structure and returns them in the in the v1.5 structure of
* 'order_item_id' => subscription details array().
*
* The subscription will be orders from oldest to newest, which is important because self::migrate_resubscribe_orders()
* method expects a subscription to exist in order to migrate the resubscribe meta data correctly.
*
* @param int $batch_size The number of subscriptions to return.
* @return array Subscription details in the v1.5 structure of 'order_item_id' => array()
* @since 2.0
*/
private static function get_subscriptions($batch_size)
{
global $wpdb;
$query = WC_Subscriptions_Upgrader::get_subscription_query($batch_size);
$wpdb->query('SET SQL_BIG_SELECTS = 1;');
$raw_subscriptions = $wpdb->get_results($query);
$subscriptions = array();
// Create a backward compatible structure
foreach ($raw_subscriptions as $raw_subscription) {
if (!isset($raw_subscription->order_item_id)) {
continue;
}
if (!array_key_exists($raw_subscription->order_item_id, $subscriptions)) {
$subscriptions[$raw_subscription->order_item_id] = array('order_id' => $raw_subscription->order_id, 'name' => $raw_subscription->order_item_name);
$subscriptions[$raw_subscription->order_item_id]['user_id'] = (int) get_post_meta($raw_subscription->order_id, '_customer_user', true);
}
$meta_key = str_replace('_subscription', '', $raw_subscription->meta_key);
$meta_key = substr($meta_key, 0, 1) == '_' ? substr($meta_key, 1) : $meta_key;
if ('product_id' === $meta_key) {
$subscriptions[$raw_subscription->order_item_id]['subscription_key'] = $subscriptions[$raw_subscription->order_item_id]['order_id'] . '_' . $raw_subscription->meta_value;
}
$subscriptions[$raw_subscription->order_item_id][$meta_key] = maybe_unserialize($raw_subscription->meta_value);
}
return $subscriptions;
}
/**
* Used to check if a user ID is greater than the last user upgraded to version 1.4.
*
* Needs to be a separate function so that it can use a static variable (and therefore avoid calling get_option() thousands
* of times when iterating over thousands of users).
*
* @since 1.4
*/
public static function is_user_upgraded_to_1_4($user_id)
{
if (false === self::$last_upgraded_user_id) {
self::$last_upgraded_user_id = get_option("wcs_1_4_last_upgraded_user_id", 0);
}
return $user_id > self::$last_upgraded_user_id ? true : false;
}
/**
* In v2.0 and newer, it's possible to simply use wp_count_posts( 'shop_subscription' ) to count subscriptions,
* but not in v1.5, because a subscription data is still stored in order item meta. This function queries the
* v1.5 database structure.
*
* @since 2.0
*/
private static function get_total_subscription_count($initial = false)
{
if ($initial) {
$subscription_count = get_option('wcs_upgrade_initial_total_subscription_count', false);
if (false === $subscription_count) {
$subscription_count = self::get_total_subscription_count();
update_option('wcs_upgrade_initial_total_subscription_count', $subscription_count);
}
} else {
if (null === self::$old_subscription_count) {
self::$old_subscription_count = self::get_total_subscription_count_query();
}
$subscription_count = self::$old_subscription_count;
}
return $subscription_count;
}