package logger

import (
	"github.com/fonchain_enterprise/fonchain-main/pkg/config"
	"strconv"

	"github.com/natefinch/lumberjack"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

// ZapInit 初始化lg
func ZapInit() *zap.Logger {
	var err error
	maxSize, _ := strconv.Atoi(config.MaxSize)
	maxAge, _ := strconv.Atoi(config.MaxAge)
	maxBackups, _ := strconv.Atoi(config.MaxAge)
	writeSyncer := getLogWriter(config.Filename, maxSize, maxBackups, maxAge)
	encoder := getEncoder()
	var l = new(zapcore.Level)
	err = l.UnmarshalText([]byte(config.Level))
	if err != nil {
		return nil
	}
	var core zapcore.Core
	core = zapcore.NewCore(encoder, writeSyncer, l)
	lg := zap.New(core, zap.AddCaller())
	zap.ReplaceGlobals(lg)
	return lg
}

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)
}