package logging

import (
	"github.com/gin-gonic/gin"
	"github.com/natefinch/lumberjack"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"os"
	"system_pay/setting"
)

var (
	// DBCNormalLogger log
	DBCNormalLogger *zap.Logger
)

// Init 初始化log
func Init(cfg *setting.Log) (err error) {
	fileName := getLogFileName()
	filePath := getLogFilePath()
	writeSyncer := getLogWriter(filePath+fileName, cfg.MaxSize, cfg.MaxBackups, cfg.MaxAge)
	encoder := getEncoder()
	var l = new(zapcore.Level)
	err = l.UnmarshalText([]byte(cfg.Level))
	if err != nil {
		return
	}
	var core zapcore.Core
	if gin.Mode() == gin.DebugMode {
		// 进入开发模式，日志输出到终端
		consoleEncoder := zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
		core = zapcore.NewTee(
			zapcore.NewCore(encoder, writeSyncer, l),
			zapcore.NewCore(consoleEncoder, zapcore.Lock(os.Stdout), zapcore.DebugLevel),
		)
	} else {
		core = zapcore.NewCore(encoder, writeSyncer, l)
	}

	DBCNormalLogger = zap.New(core, zap.AddCaller())

	zap.ReplaceGlobals(DBCNormalLogger)
	zap.L().Info("init logger success")
	return
}

func getEncoder() zapcore.Encoder {
	encoderConfig := zap.NewProductionEncoderConfig()
	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
	encoderConfig.TimeKey = "time"
	encoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder
	encoderConfig.EncodeDuration = zapcore.SecondsDurationEncoder
	encoderConfig.EncodeCaller = zapcore.ShortCallerEncoder
	return zapcore.NewJSONEncoder(encoderConfig)
}

func getLogWriter(filename string, maxSize, maxBackup, maxAge int) zapcore.WriteSyncer {
	lumberJackLogger := &lumberjack.Logger{
		Filename:   filename,
		MaxSize:    maxSize,
		MaxBackups: maxBackup,
		MaxAge:     maxAge,
	}
	return zapcore.AddSync(lumberJackLogger)
}


//// GinLogger 接收gin框架默认的日志
//func GinLogger() gin.HandlerFunc {
//	return func(c *gin.Context) {
//		start := time.Now()
//		path := c.Request.URL.Path
//		query := c.Request.URL.RawQuery
//		c.Next()
//
//		cost := time.Since(start)
//		DBCNormalLogger.Info(path,
//			zap.Int("status", c.Writer.Status()),
//			zap.String("method", c.Request.Method),
//			zap.String("path", path),
//			zap.String("query", query),
//			zap.String("ip", c.ClientIP()),
//			zap.String("user-agent", c.Request.UserAgent()),
//			zap.String("errors", c.Errors.ByType(gin.ErrorTypePrivate).String()),
//			zap.Duration("cost", cost),
//		)
//	}
//}
//
//// GinRecovery recover掉项目可能出现的panic，并使用zap记录相关日志
//func GinRecovery(stack bool) gin.HandlerFunc {
//	return func(c *gin.Context) {
//		defer func() {
//			if err := recover(); err != nil {
//				// Check for a broken connection, as it is not really a
//				// condition that warrants a panic stack trace.
//				var brokenPipe bool
//				if ne, ok := err.(*net.OpError); ok {
//					if se, ok := ne.Err.(*os.SyscallError); ok {
//						if strings.Contains(strings.ToLower(se.Error()), "broken pipe") || strings.Contains(strings.ToLower(se.Error()), "connection reset by peer") {
//							brokenPipe = true
//						}
//					}
//				}
//
//				httpRequest, _ := httputil.DumpRequest(c.Request, false)
//				if brokenPipe {
//					DBCNormalLogger.Error(c.Request.URL.Path,
//						zap.Any("error", err),
//						zap.String("request", string(httpRequest)),
//					)
//					// If the connection is dead, we can't write a status to it.
//					c.Error(err.(error)) // nolint: errcheck
//					c.Abort()
//					return
//				}
//
//				if stack {
//					DBCNormalLogger.Error("[Recovery from panic]",
//						zap.Any("error", err),
//						zap.String("request", string(httpRequest)),
//						zap.String("stack", string(debug.Stack())),
//					)
//				} else {
//					DBCNormalLogger.Error("[Recovery from panic]",
//						zap.Any("error", err),
//						zap.String("request", string(httpRequest)),
//					)
//				}
//				c.AbortWithStatus(http.StatusInternalServerError)
//			}
//		}()
//		c.Next()
//	}
//}