package corelib

import (
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"gopkg.in/natefinch/lumberjack.v2"
	"log"
	"os"
	"path"
	"picgo/configs"
)

var Logger *zap.SugaredLogger

func NewLogger() {
	writeSyncer := getLogWriter()
	encoder := getEncoder()
	core := zapcore.NewCore(encoder, writeSyncer, zapcore.DebugLevel)
	logger := zap.New(core, zap.AddCaller())
	Logger = logger.Sugar()
}

func getEncoder() zapcore.Encoder {
	encoderConfig := zap.NewProductionEncoderConfig()
	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
	encoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder
	return zapcore.NewConsoleEncoder(encoderConfig)
}

func getLogWriter() zapcore.WriteSyncer {
	var (
		err        error
		currentDir string
	)
	// 获取当前工作目录
	if currentDir, err = os.Getwd(); err != nil {
		log.Panic("获取当前工作目录失败: ", err)
	}
	logPath := path.Join(currentDir, configs.Settings.Server.LogPath)
	// Filename: 日志文件的位置
	// MaxSize：在进行切割之前，日志文件的最大大小（以 MB 为单位）
	// MaxBackups：保留旧文件的最大个数
	// MaxAges：保留旧文件的最大天数
	// Compress：是否压缩 / 归档旧文件
	lumberJackLogger := &lumberjack.Logger{
		Filename:   logPath,
		MaxSize:    50,
		MaxBackups: 10,
		MaxAge:     1,
		Compress:   false,
	}
	return zapcore.AddSync(lumberJackLogger)
}