package logger

import (
	"fmt"
	"runtime"
	"time"
)

//
//******************monitor.log文件
//日志格式举例：
//[error][20180529 13:50:55] [122] [log/a.php:27][read_ihead:56 read_body:123 total:400][host(12.33.33.33:3600) word (aa cc)] Read mysql failed
//整体日志列分割采用[]进行分割，如果字段为空在[]不输出内容
//括号中内容为与falcon对应关系，在做指标监控时
//1、日志级别：可以分debug info warn error fatal，如果作为指标监控时，请采用info字段，对应falcon的json字段在下方括号内对应关系标注
//2、时间：必须按例子中规定格式输出内容 （timestamp）
//3、指标或错误：主要用于运维根据错误号来配置报警等级、接收人等，必须按要求输出且需要在wiki记录，错误与指标只能用小写英语单词加下划线或者纯数字，该字段占位最长10个字符（metric）
//4、程序文件名与行号：可为空
//5、耗时：超时日志必须打印 总耗时：毫秒。其他两个字段用于自定义扩展，为各阶段毫秒，可为空（value）
//6、参数：可为空 （tags）
//7、描述：可为空
//
//New 实例化
const (
	//日志级别
	MONITOR_FATAL = "fatal"
	MONITOR_ERROR = "error"
	MONITOR_WARN  = "warn"
	MONITOR_INFO  = "info"
	MONITOR_DEBUG = "debug"

	//错误code
	MONITOR_ERROR_INTERFACE_TIMEOUT        = 101 //调用接口超时
	MONITOR_ERROR_INTERFACE_EXCEPTION      = 102 //接口返回数据异常
	MONITOR_ERROR_INTERFACE_EXCEED_MAXTIME = 103 //接口超过最大时间
)

//监控日志通用结构
func monitorLog(logLevel string, reasonCode uint32, consumingTime uint64, desc string) {
	//获取代码文件名称与代码行数
	_, file, line, ok := runtime.Caller(3)
	if !ok {
		file = "???"
		line = 0
	} else {
		short := file
		for i := len(file) - 1; i > 0; i-- {
			if file[i] == '/' {
				short = file[i+1:]
				break
			}
		}
		file = short
	}

	err := _fileLogWriter.Monitorlog().Output(0, fmt.Sprintf("[%s][%s] [%d] [%s/%d] [read_ihead:0 read_body:0 total:%d] [] %s",
		logLevel,
		time.Now().Format("20060102 15:04:05"),
		reasonCode,
		file,
		line,
		consumingTime,
		desc,
	))

	if err != nil {
		consoleLogger.Errorf("write monitor log to file fail, err: %s", err.Error())
		panic("monitorLog")
	}
}

var (
	//MONITOR_ERROR_INTERFACE_TIMEOUT   = 101    //调用接口超时
	MonitorErrorfInterTimeout = func(consumingTime uint64, format string, v ...interface{}) {
		MonitorErrorf(MONITOR_ERROR_INTERFACE_TIMEOUT, consumingTime, format, v...)
	}

	//MONITOR_ERROR_INTERFACE_EXCEPTION = 102    //接口返回数据异常
	MonitorErrorfInterException = func(consumingTime uint64, format string, v ...interface{}) {
		MonitorErrorf(MONITOR_ERROR_INTERFACE_EXCEPTION, consumingTime, format, v...)
	}

	//MONITOR_ERROR_INTERFACE_EXCEPTION = 102    //接口超过最大时间
	MonitorErrorfInterExceedMaxTime = func(consumingTime uint64, format string, v ...interface{}) {
		MonitorErrorf(MONITOR_ERROR_INTERFACE_EXCEED_MAXTIME, consumingTime, format, v...)
	}

	//[error][20180529 13:50:55] [122] [log/a.php:27][read_ihead:56 read_body:123 total:400][host(12.33.33.33:3600) word (aa cc)] Read mysql failed
	MonitorErrorf = func(reasonCode uint32, consumingTime uint64, format string, v ...interface{}) {
		monitorLog(MONITOR_ERROR, reasonCode, consumingTime, fmt.Sprintf(format, v...))
	}

	MonitorInfo = func(reasonCode uint32, consumingTime uint64, format string, v ...interface{}) {
		monitorLog(MONITOR_INFO, reasonCode, consumingTime, fmt.Sprintf(format, v...))
	}

	MonitorFatal = func(reasonCode uint32, consumingTime uint64, format string, v ...interface{}) {
		monitorLog(MONITOR_FATAL, reasonCode, consumingTime, fmt.Sprintf(format, v...))
	}

	MonitorWarn = func(reasonCode uint32, consumingTime uint64, format string, v ...interface{}) {
		monitorLog(MONITOR_WARN, reasonCode, consumingTime, fmt.Sprintf(format, v...))
	}

	MonitorDebug = func(reasonCode uint32, consumingTime uint64, format string, v ...interface{}) {
		monitorLog(MONITOR_DEBUG, reasonCode, consumingTime, fmt.Sprintf(format, v...))
	}
)