/*
*
日志过滤器
记录网站所有访问和请求
2015-7-2
任政
*
*/
package filter

import (
	"app.yhyue.com/moapp/jybase/go-xweb/xweb"
	"app.yhyue.com/moapp/message/db"
	"encoding/json"
	"net"
	"net/http"
	"strings"
	"time"

	"app.yhyue.com/moapp/jybase/go-xweb/httpsession"
)

// 日志过滤器
type logfilter struct {
	App *xweb.App
}

// 继承过滤器方法
func (l *logfilter) Do(w http.ResponseWriter, req *http.Request) bool {
	session := l.App.SessionManager.Session(req, w)
	go addLog(l, session, req)
	return true
}

// 用线程处理，增加日志
func addLog(l *logfilter, session *httpsession.Session, req *http.Request) {
	timeNow := time.Now()
	md, _ := json.Marshal(req.Form)
	logs := map[string]interface{}{
		"createtime": timeNow,
		"ip":         GetIp(req),
		"refer":      req.Referer(),
		"year":       timeNow.Year(),
		"month":      timeNow.Month(),
		"day":        timeNow.Day(),
		"hour":       timeNow.Hour(),
		"minutes":    timeNow.Minute(),
		"describe":   string(md),
		"client":     req.Header.Get("user-agent"),
		"method":     req.Method,
		"url":        req.RequestURI,
	}
	if session.Get("userId") != nil {
		logs["userid"] = session.Get("userId")
		logs["nickname"] = session.Get("s_nickname")
	}
	db.MgoLog.Save("jymessage_logs", logs)
}

// 获取请求ip
func GetIp(req *http.Request) string {
	if req == nil {
		return ""
	}
	ip_for := req.Header.Get("x-forwarded-for")
	ip_client := req.Header.Get("http_client_ip")
	ip_addr := req.Header.Get("Remote_addr")
	un := "unknown"
	if (ip_for != un) && (len(strings.TrimSpace(ip_for)) > 0) {
		return ip_for
	}
	if (ip_client != un) && (len(strings.TrimSpace(ip_client)) > 0) {
		return ip_client
	}
	if (ip_addr != un) && (len(strings.TrimSpace(ip_addr)) > 0) {
		return ip_addr
	}
	ip, _, _ := net.SplitHostPort(req.RemoteAddr)
	return ip
}