Plugin.php

<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;
/**
 * 为博客添加Gravatar头像墙功能, 支持镜像加速与缓存
 * 
 * @package Avatars
 * @author 羽中
 * @version 1.2.5
 * @dependence 14.5.26-*
 * @link http://www.yzmb.me/archives/net/avatars-for-typecho
 */
class Avatars_Plugin implements Typecho_Plugin_Interface
{
	/**
	* 默认美化提示样式
	* 
	* @access private
	* @var string
	*/
	private static $decss = '#tooltip {position:absolute;z-index:20;max-width:200px;background-color:#101010;text-align:left;padding:0 8px;border-radius:6px;-moz-border-radius:6px;-webkit-border-radius:6px;}'.PHP_EOL.
'#tooltip p {color:#FFF;font:12px "Microsoft YaHei",Tahoma,Arial,Sans-Serif;}'.PHP_EOL.
'#tooltip p em {display:block;margin-top:1px;color:#70B9ED;font-style:normal;}';

	/**
	 * 激活插件方法,如果激活失败,直接抛出异常
	 * 
	 * @access public
	 * @return void
	 * @throws Typecho_Plugin_Exception
	 */
	public static function activate()
	{
		Typecho_Plugin::factory('Widget_Abstract_Contents')->contentEx = array('Avatars_Plugin','walls');
		Typecho_Plugin::factory('Widget_Abstract_Comments')->gravatar = array('Avatars_Plugin','avatars');

		Typecho_Plugin::factory('Widget_Archive')->header = array('Avatars_Plugin','avcss');
		Typecho_Plugin::factory('Widget_Archive')->footer = array('Avatars_Plugin','avjs');

		//模版调用钩子
		Typecho_Plugin::factory('Widget_Archive')->callAvatars = array('Avatars_Plugin', 'output');
	}

	/**
	 * 禁用插件方法,如果禁用失败,直接抛出异常
	 * 
	 * @static
	 * @access public
	 * @return void
	 * @throws Typecho_Plugin_Exception
	 */
	public static function deactivate(){}

	/**
	 * 获取插件配置面板
	 * 
	 * @access public
	 * @param Typecho_Widget_Helper_Form $form 配置面板
	 * @return void
	 */
	public static function config(Typecho_Widget_Helper_Form $form)
	{
		echo
'<div style="color:#999;font-size:.92857em;word-break:break-all;"><p>'
	._t('在主题模版文件中的适当位置插入代码%s或编辑页<br/>面写入%s即可显示读者墙(其中黑色字参数为标签与class名称, 可自定义)','<strong style="color:#467B96;">&lt;?php $this-&gt;avatars("<span style="color:#444;">li</span>","<span style="color:#444;">mostactive</span>"); ?&gt;</strong>','<strong style="color:#467B96;">[AVATARS|<span style="color:#444;">li</span>|<span style="color:#444;">mostactive</span>]</strong>').
'</p></div>
<script src="'.Helper::options()->adminUrl.'js/jquery.js"></script>
<script>
$(function(){
	var ts = $("#tipstyle-0-7"),
		tt = $("#tooltip-1"),
		it = $("#typecho-option-item-tipstyle-6");
	if (!ts.val()) {
		ts.val(\''.str_replace(PHP_EOL,'\r',self::$decss).'\');
	}
	if (tt.is(":checked")) it.attr("style","display:block");
	tt.click(function(){
		it.toggle(100);
	});
});
</script>';

		$wsize = new Typecho_Widget_Helper_Form_Element_Text('wsize',
		NULL,'32',_t('读者墙头像大小'),_t('读者墙上的头像尺寸(单位px不用填写)'));
		$wsize->input->setAttribute('class','w-10');
		$wsize->addRule('required',_t('头像尺寸不能为空'));
		$form->addInput($wsize->addRule('isInteger',_t('请填写整数数字')));

		$wdefault = new Typecho_Widget_Helper_Form_Element_Text('wdefault',
		NULL,'',_t('读者墙缺省头像'),_t('支持gravatar随机头像后缀(identicon/monsterid/wavatar/retro等), 自定义图片url注意尺寸应一致'));
		$wdefault->input->setAttribute('class','w-60');
		$form->addInput($wdefault);

		$listnumber = new Typecho_Widget_Helper_Form_Element_Text('listnumber',
		NULL,'10',_t('读者墙头像数目'),_t('读者墙上最多展示的评论者头像个数'));
		$listnumber->input->setAttribute('class','w-10');
		$listnumber->addRule('required',_t('头像个数不能为空'));
		$form->addInput($listnumber->addRule('isInteger',_t('请填写整数数字')));

		$since = new Typecho_Widget_Helper_Form_Element_Text('since',
		NULL,'30',_t('读者墙收录时间'),_t('读者墙将展示该天数以内的评论排行'));
		$since->input->setAttribute('class','w-10');
		$since->addRule('required',_t('收录时间不能为空'));
		$form->addInput($since->addRule('isInteger',_t('请填写整数数字')));

		$altword = new Typecho_Widget_Helper_Form_Element_Text('altword',
		NULL,'条评论',_t('读者墙提示文字'),_t('个性化读者墙头像的评论数提示文字'));
		$altword->input->setAttribute('style','width:150px;');
		$form->addInput($altword);

		$tooltip = new Typecho_Widget_Helper_Form_Element_Checkbox('tooltip',
		array(1=>_t('美化效果')),NULL,'');
		$tooltip->label->setAttribute('style','position:absolute;color:#999;font-weight:normal;bottom:37px;left:190px;');
		$tooltip->input->setAttribute('style','position:absolute;bottom:5px;right:74px;');
		$tooltip->setAttribute('style','position:relative;');
		$form->addInput($tooltip);

		$tipstyle = new Typecho_Widget_Helper_Form_Element_Textarea('tipstyle',NULL,self::$decss,_t('自定义美化样式'),_t('可定制<strong style="color:#467B96;">#tooltip</strong>(浮层背景), <strong style="color:#467B96;">#tooltip p</strong>(提示文字), <strong style="color:#467B96;">#tooltip p em</strong>(读者链接)样式, 留空即恢复默认'));
		$tipstyle->input->setAttribute('style','word-break:break-all;max-width:600px;height:100px;');
		$tipstyle->setAttribute('style','display:none;');
		$form->addInput($tipstyle);

		$proxy = new Typecho_Widget_Helper_Form_Element_Radio('proxy',
		array(''=>_t('否'),'https://cdn.v2ex.com/gravatar/'=>_t('v2ex镜像'),'geekzu'=>_t('极客族镜像')),'',_t('用代理加速头像'),_t('国内直连gravatar服务器不流畅时可选'));
		$form->addInput($proxy);

		$cache = new Typecho_Widget_Helper_Form_Element_Checkbox('cache',
		array(1=>_t('是')),NULL,_t('在本地缓存头像'),_t('将头像下载到插件的cache目录中调用'));
		$form->addInput($cache);

		$comment = new Typecho_Widget_Helper_Form_Element_Checkbox('comment',
		array(1=>_t('是')),NULL,_t('作用评论区头像'),_t('评论区头像也用上两项设置(加速/缓存)'));
		$form->addInput($comment);

		$security = Helper::security();
		if (Typecho_Request::getInstance()->is('action=deletefiles')) {
			$security->protect();
			self::deletefiles();
		}
		//清空动作按钮
		$deletefiles = new Typecho_Widget_Helper_Form_Element_Submit();
		$deletefiles->value(_t('清空缓存'));
		$deletefiles->setAttribute('style','position:relative');
		$deletefiles->input->setAttribute('style','position:absolute;bottom:127.5px;left:110px;padding-bottom:1px;');
		$deletefiles->input->setAttribute('class','btn btn-xs btn-warn');
		$deletefiles->input->setAttribute('formaction',$security->getAdminUrl('options-plugin.php?config=Avatars&action=deletefiles'));
		$form->addItem($deletefiles);
	}

	/**
	 * 个人用户的配置面板
	 * 
	 * @access public
	 * @param Typecho_Widget_Helper_Form $form
	 * @return void
	 */
	public static function personalConfig(Typecho_Widget_Helper_Form $form){}

	/**
	 * 输出头部样式
	 * 
	 * @access public
	 * @return void
	 */
	public static function avcss()
	{
		$settings = Helper::options()->plugin('Avatars');
		$tipstyle = $settings->tipstyle;
		$css = '';

		if ($settings->tooltip) {
			$css = '
<style type="text/css">
'.($tipstyle ? $tipstyle : self::$decss).'
</style>
';
		}
		echo $css;
	}

	/**
	 * 输出底部脚本
	 * 
	 * @access public
	 * @return void
	 */
	public static function avjs()
	{
		$settings = Helper::options()->plugin('Avatars');
		$js = '';

		if ($settings->tooltip) {
			$js = '
<script type="text/javascript">
window.jQuery || document.write(\'<script type="text/javascript" src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"><\/script>\')</script>
<script type="text/javascript">
$(function(){
	var st = function(){
		$(\'.avatars a\').mouseover(function(e){
			this.myTitle = this.title;
			this.myHref = this.href;
			this.myHref = this.myHref.length > 61 ? this.myHref.toString().substring(0,50) + \'...\': this.myHref;
			this.title = \'\';
			var t = \'<div id="tooltip"><p>\' + this.myTitle + \'<em>\' + decodeURI(this.myHref) + \'</em>\' + \'</p></div>\';
			$(\'body\').append(t);
			$(\'#tooltip\').css({
				opacity: \'0.8\',
				top: e.pageY + 10 + \'px\',
				left: e.pageX + 5 + \'px\'
			}).show(\'fast\')
		}).mouseout(function(){
			this.title = this.myTitle;
			$(\'#tooltip\').remove()
		}).mousemove(function(e){
			$(\'#tooltip\').css({
				top: e.pageY + 10 + \'px\',
				left: e.pageX + 5 + \'px\'
			})
		})
	};
	st();
});
</script>
';
		}
		echo $js;
	}

	/**
	 * 读者墙标签解析
	 * 
	 * @access public
	 * @param string $content
	 * @return string
	 */
	public static function walls($content,$widget,$lastResult)
	{
		$content = empty($lastResult) ? $content : $lastResult;

		if ($widget->is('page') && false!==stripos($content,'[AVATARS')) {
			$content = preg_replace_callback('/\[AVATARS(\w*[^>]*)\]/i',array('Avatars_Plugin','callback'),$content);
		}

		return $content;
	}

	/**
	 * 标签参数回调
	 * 
	 * @access public
	 * @param array $match
	 * @return string
	 */
	public static function callback($match)
	{
		$listtag = 'li';
		$class = 'mostactive';

		if ($match['1']) {
			if (preg_match('/\|([\w-]*)\|([\w-]*)/i',$match['1'],$out)) {
				$listtag = trim($out['1']);
				$class = trim($out['2']);
			}
		}

		return self::output(Typecho_Widget::widget('Widget_Archive'),array($listtag,$class,true));
	}

	/**
	 * 输出读者墙实例
	 * 
	 * @access public
	 * @param array $params 实例参数
	 * @return string
	 */
	public static function output($widget,array $params)
	{
		$options = Helper::options();
		$settings = $options->plugin('Avatars');
		$tipstyle = $settings->tipstyle;

		//处理实例参数
		$listtag = 'li';
		$listtag = isset($params['0']) && is_string($params['0']) ? $params['0'] : $listtag;
		$classname = 'mostactive';
		$classname = isset($params['1']) && is_string($params['1']) ? $params['1'] : $classname;
		$iscall = false;
		$iscall = !empty($params['2']) && is_bool($params['2']) ? $params['2'] : $iscall;

		//获取评论计数
		$db = Typecho_Db::get();
		$select = $db->select(array('COUNT(author)'=>'cnt'),'author','url','mail')->from('table.comments')
			->where('status = ?','approved')
			->where('authorId = ?','0') //排除博主
			->where('type = ?','comment')
			->where('created > ?',$options->gmtTime + $options->timezone - $settings->since*24*3600) //收录时间
			->limit($settings->listnumber)
			->group('author')
			->order('cnt',Typecho_Db::SORT_DESC); //降序排列
		$counts = $db->fetchAll($select);

		$wurl = '';
		$mostactive = '<div class="avatars">
';
		foreach ($counts as $count) {
			//获取优化地址
			$wurl = self::avurl($count['mail'],$settings->wsize,$options->commentsAvatarRating //同步评级
				,$settings->wdefault,Typecho_Widget::widget('Widget_Archive')->request->isSecure() //安全请求
			);

			$mostactive .= '
		<'.$listtag;
			$mostactive .= ' class="'.$classname.'"';
			$mostactive .= '><a href="';
			//静默空白链接
			$mostactive .= $count['url'] ? $count['url'] : '#';
			$mostactive .= '"';
			//同步nofollow设置
			$mostactive .= $options->commentsUrlNofollow ? ' rel="external nofollow"' : '';
			$mostactive .= ' title="'.$count['author'].' - '.$count['cnt'].$settings->altword.'">';
			$mostactive .= $wurl ? '<img src="'.$wurl.'" alt="'.$count['author'].'" class="avatar"/>' : '<span style="font-weight:bold;color:#467B96;">'._t('缓存出错!').'</span>';
			$mostactive .= '</a></'.$listtag.'>';
		}
		$mostactive .= '</div>
';

		//模版输出判断
		if ($iscall) {
			return $mostactive;
		} else {
			echo $mostactive;
		}
	}

	/**
	 * 输出头像地址
	 * 
	 * @access private
	 * @param string $mail 邮箱地址
	 * @param integer $size 头像尺寸
	 * @param string $rate 头像评级
	 * @param string $default 默认头像
	 * @param boolean $secure https请求
	 * @return string
	 */
	private static function avurl($mail,$size,$rating,$default,$secure=false)
	{
		$options = Helper::options();
		$settings = $options->plugin('Avatars');
		$hash = $mail ? md5(strtolower(trim($mail))) : '';

		$proxy = $settings->proxy;
		$server = $proxy ? 
			($proxy=='geekzu' ? ($secure ? 'https://sdn.geekzu.org/avatar/' : 'http://fdn.geekzu.org/avatar/') : $proxy)
			 : ($secure ? 'https://secure.gravatar.com/avatar/' : 'http://'.rand(0,2).'.gravatar.com/avatar/');

		$url = $server.$hash;
		$url .= '?s='.$size;
		$url .= '&r='.$rating;
		$url .= '&d='.$default;

		if ($settings->cache) {
			$path = __TYPECHO_ROOT_DIR__.__TYPECHO_PLUGIN_DIR__.'/Avatars/cache/';
			//生成缓存目录
			if (!is_dir($path)) {
				if (!self::makedir($path)) {
					return false;
				}
			}

			//默认缓存15日
			$cachetime = 14*24*3600;
			$cachedir = $path.$hash.$size;

			//生成缓存头像
			if (!is_file($cachedir) || (time()-filemtime($cachedir))>$cachetime) {
				if (!@copy($url,$cachedir)) {
					return false;
				}
			}

			$url = $options->pluginUrl.'/Avatars/cache/'.$hash.$size;
		}

		return $url;
	}

	/**
	 * 缓存头像清空
	 *
	 * @access private
	 * @return void
	 */
	private static function deletefiles()
	{
		$path = glob(__TYPECHO_ROOT_DIR__.'/usr/plugins/Avatars/cache/*');
		if ($path) {
			foreach ($path as $filename) {
				@unlink($filename);
			}
		}

		Typecho_Widget::widget('Widget_Notice')->set(_t('本地头像缓存已清空!'),'notice');
		Typecho_Response::getInstance()->goBack();
	}

	/**
	 * 本地目录创建
	 * 
	 * @access private
	 * @param string $path 路径
	 * @return boolean
	 */
	private static function makedir($path)
	{
		$path = preg_replace("/\\\+/",'/',$path);
		$current = rtrim($path,'/');
		$last = $current;

		while (!is_dir($current) && false!==strpos($path,'/')) {
			$last = $current;
			$current = dirname($current);
		}
		if ($last==$current) {
			return true;
		}
		if (!@mkdir($last)) {
			return false;
		}

		$stat = @stat($last);
		$perms = $stat['mode'] & 0007777;
		@chmod($last,$perms);

		return self::makedir($path);
	}

	/**
	 * 兼容评论区头像
	 * 
	 * @access public
	 * @param integer $size 头像尺寸
	 * @param string $default 默认头像
	 * @return void
	 */
	public static function avatars($size,$rating,$default,$comments)
	{
		$mail = $comments->mail;
		$issecure = $comments->request->isSecure();

		$url = Helper::options()->plugin('Avatars')->comment ? self::avurl($mail,$size,$rating,$default,$issecure)
			 : Typecho_Common::gravatarUrl($mail,$size,$rating,$default,$issecure);

		echo $url ? '<img class="avatar" src="'.$url.'" alt="'.$comments->author.'"/>' : '<span style="font-weight:bold;color:#467B96;">'._t('缓存出错!').'</span>';
	}

}