function kopa_click_like_button()
{
check_ajax_referer('kopa_click_like_button', 'ajax_nonce');
if (!empty($_POST['post_id'])) {
$result = array('status' => 'disable', 'total' => 0);
$post_id = (int) $_POST['post_id'];
$status = $_POST['status'];
$include_text = $_POST['include_text'];
$public_key = KOPA_OPT_PREFIX . 'likes';
$single_key = KOPA_OPT_PREFIX . 'like_by_' . KopaUtil::get_client_IP();
$total = KopaUtil::get_likes($post_id);
$is_liked = KopaUtil::is_liked($post_id);
if ('enable' == $status && !$is_liked) {
$total++;
update_post_meta($post_id, $single_key, true);
update_post_meta($post_id, $public_key, abs($total));
$result['class'] = 'kopa-button-likes-disable';
} else {
$total--;
delete_post_meta($post_id, $single_key);
update_post_meta($post_id, $public_key, abs($total));
$result['class'] = 'kopa-button-likes-enable';
}
if ($include_text) {
if ($total < 2) {
$total .= __(' Like', kopa_get_domain());
} else {
$total .= __(' Likes', kopa_get_domain());
}
}
$result['total'] = $total;
echo json_encode($result);
}
exit;
}
/**
* @package Kopa
* @subpackage Core
* @author thethangtran <*****@*****.**>
* @since 1.0.0
*/
public static function is_liked($post_id)
{
$key = KOPA_OPT_PREFIX . 'like_by_' . KopaUtil::get_client_IP();
return KopaUtil::get_post_meta($post_id, $key, true, 'Boolean', false);
}