<?php
/**
 * WordPress 內置嵌套評論專用 Ajax comments >> WordPress-jQuery-Ajax-Comments v1.3 by Willin Kan.
 *
 * 說明: 這個文件是由 WP 3.0 根目錄的 wp-comment-post.php 修改的, 修改的地方有注解. 當 WP 升級, 請注意可能有所不同.
 */

if ( 'POST' != $_SERVER['REQUEST_METHOD'] ) {
	header('Allow: POST');
	header('HTTP/1.1 405 Method Not Allowed');
	header('Content-Type: text/plain');
	exit;
}

/** Sets up the WordPress Environment. */
require( dirname(__FILE__) . '/../../../wp-load.php' ); // 此 comments-ajax.php 位於主題資料夾,所以位置已不同

nocache_headers();

$comment_post_ID = isset($_POST['comment_post_ID']) ? (int) $_POST['comment_post_ID'] : 0;

$post = get_post($comment_post_ID);

if ( empty($post->comment_status) ) {
	do_action('comment_id_not_found', $comment_post_ID);
    err(__('无效评论.')); // 将 exit 改为错误提示   
}

// get_post_status() will get the parent status for attachments.
$status = get_post_status($post);

$status_obj = get_post_status_object($status);

if ( !comments_open($comment_post_ID) ) {
	do_action('comment_closed', $comment_post_ID);
    err(__('抱歉，本文评论功能已关闭.')); // 将 wp_die 改为错误提示   
} elseif ( 'trash' == $status ) {
	do_action('comment_on_trash', $comment_post_ID);
    err(__('无效评论.')); // 将 exit 改为错误提示   
} elseif ( !$status_obj->public && !$status_obj->private ) {
	do_action('comment_on_draft', $comment_post_ID);
    err(__('无效评论.')); // 将 exit 改为错误提示   
} elseif ( post_password_required($comment_post_ID) ) {
	do_action('comment_on_password_protected', $comment_post_ID);
    err(__('评论受密码保护')); // 将 exit 改为错误提示   
} else {
	do_action('pre_comment_on_post', $comment_post_ID);
}

$comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
$comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
$comment_author_url   = ( isset($_POST['url']) )     ? trim($_POST['url']) : null;
$comment_content      = ( isset($_POST['comment']) ) ? trim($_POST['comment']) : null;
$edit_id              = ( isset($_POST['edit_id']) ) ? $_POST['edit_id'] : null; // 提取 edit_id

// If the user is logged in
$user = wp_get_current_user();
if ( $user->ID ) {
	if ( empty( $user->display_name ) )
		$user->display_name=$user->user_login;
	$comment_author       = $wpdb->escape($user->display_name);
	$comment_author_email = $wpdb->escape($user->user_email);
	$comment_author_url   = $wpdb->escape($user->user_url);
	if ( current_user_can('unfiltered_html') ) {
		if ( wp_create_nonce('unfiltered-html-comment_' . $comment_post_ID) != $_POST['_wp_unfiltered_html_comment'] ) {
			kses_remove_filters(); // start with a clean slate
			kses_init_filters(); // set up the filters
		}
	}
} else {
	if ( get_option('comment_registration') || 'private' == $status )
        err(__('抱歉，请登录后再进行评论.')); // 将 wp_die 改为错误提示   
}

$comment_type = '';

if ( get_option('require_name_email') && !$user->ID ) {
	if ( 6 > strlen($comment_author_email) || '' == $comment_author )
        err( __('错误: 请填写必填项 （昵称，邮箱）.') ); // 将 wp_die 改为错误提示   
	elseif ( !is_email($comment_author_email))
        err( __('错误：请填写合法Email地址.') );// 将 wp_die 改为错误提示   
}

if ( '' == $comment_content )
    err( __('错误：请填写评论内容.') ); // 将 wp_die 改为错误提示   
// 增加: 錯誤提示功能
function err($ErrMsg) {
    header('HTTP/1.1 405 Method Not Allowed');
    echo $ErrMsg;
    exit;
}
// 增加: 禁止全英文/屏蔽日语垃圾评论
function v7v3_comment_post( $incoming_comment ) {
$pattern = '/[一-龥]/u';
$jpattern ='/[ぁ-ん]+|[ァ-ヴ]+/u';
if(!preg_match($pattern, $incoming_comment['comment_content'])) {
header("Content-type: text/html; charset=utf-8");
err( __( "
写点汉字吧，博主外语很捉急！ Please write some chinese words！
"));
exit;
}
if(preg_match($jpattern, $incoming_comment['comment_content'])){
header("Content-type: text/html; charset=utf-8");
err( __( "
日文滚粗！Japanese Get out！日本語出て行け！
"));
exit;
}
return( $incoming_comment );
}
add_filter('preprocess_comment', 'v7v3_comment_post');
// 增加: 檢查重覆評論功能
$dupe = "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = '$comment_post_ID' AND ( comment_author = '$comment_author' ";
if ( $comment_author_email ) $dupe .= "OR comment_author_email = '$comment_author_email' ";
$dupe .= ") AND comment_content = '$comment_content' LIMIT 1";
if ( $wpdb->get_var($dupe) ) {
    err(__('重复评论检测：看起来这条评论你以前说过.'));   
}
//删除评论中添加链接
function remove_comment_fields($fields) {
    unset($fields['url']);
    return $fields;
}
add_filter('comment_form_default_fields','remove_comment_fields');  
// 增加: 檢查評論太快功能
if ( $lasttime = $wpdb->get_var( $wpdb->prepare("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_author = %s ORDER BY comment_date DESC LIMIT 1", $comment_author) ) ) { 
$time_lastcomment = mysql2date('U', $lasttime, false);
$time_newcomment  = mysql2date('U', current_time('mysql', 1), false);
$flood_die = apply_filters('comment_flood_filter', false, $time_lastcomment, $time_newcomment);
if ( $flood_die ) {
    err(__('您发表评论也太快了'));   
	}
}

$comment_parent = isset($_POST['comment_parent']) ? absint($_POST['comment_parent']) : 0;

$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');

// 增加: 檢查評論是否正被編輯, 更新或新建評論
if ( $edit_id ){
$comment_id = $commentdata['comment_ID'] = $edit_id;
wp_update_comment( $commentdata );
} else {
$comment_id = wp_new_comment( $commentdata );
}

$comment = get_comment($comment_id);
if ( !$user->ID ) {
	$comment_cookie_lifetime = apply_filters('comment_cookie_lifetime', 30000000);
	setcookie('comment_author_' . COOKIEHASH, $comment->comment_author, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
	setcookie('comment_author_email_' . COOKIEHASH, $comment->comment_author_email, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
	setcookie('comment_author_url_' . COOKIEHASH, esc_url($comment->comment_author_url), time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
}

//$location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id; //取消原有的刷新重定向
//$location = apply_filters('comment_post_redirect', $location, $comment);

//wp_redirect($location);

$comment_depth = 1;   //为评论的 class 属性准备的
$tmp_c = $comment;
while($tmp_c->comment_parent != 0){
$comment_depth++;
$tmp_c = get_comment($tmp_c->comment_parent);
}

//以下是評論式樣, 不含 "回覆". 要用你模板的式樣 copy 覆蓋.
?>


	<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
		<article id="comment-<?php comment_ID(); ?>" class="comment-body">
			<div class="comment-meta ">
			<div class="comment-author vcard">
				<?php echo get_avatar( $comment, 40 ); ?>
			</div>
			<div class="comment-chat" <?php if(get_avatar($comment, 40)==true)?>>
	        	<div class="comment-metadata"><div class="fn"><?php comment_author_link() ?></div>:<?php edit_comment_link('编辑','&nbsp;&nbsp;',''); ?><time class="datetime"><?php echo timeago( $comment->comment_date_gmt ); ?></time></div>
				<?php if ( $comment->comment_approved == '0' ){?><span style="color:#C00; font-style:inherit">您的评论正在等待审核中...</span><br /><?php } ?>
				<?php comment_text() ?>
	        </div>
			</div>
			<div class="clear"></div>
	</article>


