// 生成分享链接AJAX
add_action('wp_ajax_create_share_link', 'create_share_link_func');
add_action('wp_ajax_nopriv_create_share_link', 'create_share_link_func');
function create_share_link_func(){
global $wpdb;
$tid = intval($_POST['tid']);
$now = time();
$expire = $now + 7*24*3600;
$finger = get_finger();
$code = md5($finger.$tid.$now.rand(1000,9999));
// 判断是否存在未过期记录
$exist = $wpdb->get_row($wpdb->prepare("SELECT id FROM share_log WHERE share_uid=%s AND target_id=%d AND expire_time>$now", $finger, $tid));
if($exist){
$wpdb->update("share_log", ['expire_time'=>$expire], ['id'=>$exist->id]);
$getcode = $wpdb->get_var($wpdb->prepare("SELECT share_code FROM share_log WHERE id=%d", $exist->id));
$code = $getcode;
}else{
$wpdb->insert("share_log", [
'share_uid' => $finger,
'share_code' => $code,
'target_id' => $tid,
'need_num' => 1,
'unlock_num' => 0,
'is_unlock' => 0,
'expire_time' => $expire,
'create_time' => $now
]);
}
$url = home_url("/?p=$tid&s=$code");
echo json_encode(['code'=>200,'url'=>$url]);
exit;
}
// 查询解锁状态AJAX
add_action('wp_ajax_check_share_unlock', 'check_share_unlock_func');
add_action('wp_ajax_nopriv_check_share_unlock', 'check_share_unlock_func');
function check_share_unlock_func(){
global $wpdb;
$tid = intval($_POST['tid']);
$now = time();
$finger = get_finger();
$row = $wpdb->get_row($wpdb->prepare("SELECT is_unlock FROM share_log WHERE share_uid=%s AND target_id=%d AND expire_time>$now ORDER BY id DESC LIMIT 1", $finger, $tid));
$unlock = $row ? $row->is_unlock : 0;
echo json_encode(['is_unlock'=>$unlock]);
exit;
}
// 全局指纹函数
function get_finger(){
$ua = $_SERVER['HTTP_USER_AGENT'];
$ip = $_SERVER['REMOTE_ADDR'];
return md5($ua.$ip);
}
