<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think;
/**
 * 日志处理类
 */
class Log {

    // 日志级别 从上到下，由低到高
    const EMERG     = 'EMERG';  // 严重错误: 导致系统崩溃无法使用
    const ALERT     = 'ALERT';  // 警戒性错误: 必须被立即修改的错误
    const CRIT      = 'CRIT';  // 临界值错误: 超过临界值的错误，例如一天24小时，而输入的是25小时这样
    const ERR       = 'ERR';  // 一般错误: 一般性错误
    const WARN      = 'WARN';  // 警告性错误: 需要发出警告的错误
    const NOTICE    = 'NOTIC';  // 通知: 程序可以运行但是还不够完美的错误
    const INFO      = 'INFO';  // 信息: 程序输出信息
    const DEBUG     = 'DEBUG';  // 调试: 调试信息
    const SQL       = 'SQL';  // SQL：SQL语句 注意只在调试模式开启时有效

    // 日志信息
    static protected $log       =  array();

    // 日志存储
    static protected $storage   =   null;

    // 日志初始化
    static public function init($config=array()){
        $type   =   isset($config['type']) ? $config['type'] : 'File';
        $class  =   strpos($type,'\\')? $type: 'Think\\Log\\Driver\\'. ucwords(strtolower($type));           
        unset($config['type']);
        self::$storage = new $class($config);
    }

    /**
     * 记录日志 并且会过滤未经设置的级别
     * @static
     * @access public
     * @param string $message 日志信息
     * @param string $level  日志级别
     * @param boolean $record  是否强制记录
     * @return void
     */
    static function record($message,$level=self::ERR,$record=false) {
        if($record || false !== strpos(C('LOG_LEVEL'),$level)) {
            self::$log[] =   "{$level}: {$message}\r\n";
        }
    }

    /**
     * 日志保存
     * @static
     * @access public
     * @param integer $type 日志记录方式
     * @param string $destination  写入目标
     * @return void
     */
    static function save($type='',$destination='') {
        if(empty(self::$log)) return ;

        if(empty($destination)){
            $destination = C('LOG_PATH').date('y_m_d').'.log';
        }
        if(!self::$storage){
            $type 	= 	$type ? : C('LOG_TYPE');
            $class  =   'Think\\Log\\Driver\\'. ucwords($type);
            self::$storage = new $class();            
        }
        $message    =   implode('',self::$log);
        self::$storage->write($message,$destination);
        // 保存后清空日志缓存
        self::$log = array();
    }

    /**
     * 日志直接写入
     * @static
     * @access public
     * @param string $message 日志信息
     * @param string $level  日志级别
     * @param integer $type 日志记录方式
     * @param string $destination  写入目标
     * @return void
     */
    static function write($message,$level=self::ERR,$type='',$destination='') {
        if(!self::$storage){
            $type 	= 	$type ? : C('LOG_TYPE');
            $class  =   'Think\\Log\\Driver\\'. ucwords($type);
            $config['log_path'] = C('LOG_PATH');
            self::$storage = new $class($config);            
        }
        if(empty($destination)){
            $destination = C('LOG_PATH').date('y_m_d').'.log';        
        }
        self::$storage->write("{$level}: {$message}", $destination);
    }

    /**
     * 用户行为记录
     */
    static function actionLog($action = null, $model = null, $record_id = null){
        
        //参数检查
        if(empty($action) || empty($model)){
            return '参数不能为空';
        }
        $user_id = is_login();

        //查询行为,判断是否执行
        $action_info = SM('Action')->getByName($action);
        if($action_info['status'] != 1){
            return '该行为被禁用或删除';
        }

        //插入行为日志
        $data['action_id']      =   $action_info['id'];
        $data['user_id']        =   $user_id;
        $data['action_ip']      =   ip2long(get_client_ip());
        $data['model']          =   $model;
        $data['record_id']      =   $record_id;
        $data['create_time']    =   NOW_TIME;

        //解析日志规则,生成日志备注
        if(!empty($action_info['log'])){
            if(preg_match_all('/\{(\S+?)\}/', $action_info['log'], $match)){
                foreach ($match[1] as $value){
                    $param = explode('|', $value);
                    if(isset($param[0])){
                        switch($param[0]){
                            case "fun":
                                $replace[] = call_user_func($param[2],$_REQUEST[$param[1]]);
                            break;
                            case "arr":
                                $arr = [];
                                $arr = explode(",",$param[2]);
                                $arrMerge = [$arr[0]=>$arr[1],$arr[2]=>$arr[3]];
                                $replace[] = isset($_REQUEST[$param[1]]) ? $arrMerge[$_REQUEST[$param[1]]]:$arrMerge[$arr[0]];
                            break;
                            case "data":
                                $replace[] = $_REQUEST[$param[1]];
                            break;
                            case "json":
                                $jsonStr = '{'.$param[2].'}';
                                $jsonData = json_decode($jsonStr,true);
                                $replace[] = $jsonData[$_REQUEST[$param[1]]];
                            break;
                            default:
                                $replace[] = $log[$param[0]];
                            break;
                        }
                    }
                }
                $data['remark'] =   str_replace($match[0], $replace, $action_info['log']);
            }else{
                $data['remark'] =   $action_info['log'];
            }
        }else{
            //未定义日志规则，记录操作url
            $data['remark']     =   '操作url：'.$_SERVER['REQUEST_URI'];
        } 

        SM('ActionLog')->add($data);
    }
}