package logger

import (
	"github.com/natefinch/lumberjack"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"os"
	"time"
)

// error logger
var log *zap.SugaredLogger

var levelMap = map[string]zapcore.Level{
	"debug": zapcore.DebugLevel,
	"info":  zapcore.InfoLevel,
	"warn":  zapcore.WarnLevel,
	"error": zapcore.ErrorLevel,
	"panic": zapcore.PanicLevel,
	"fatal": zapcore.FatalLevel,
}

type Config struct {
	Compress      bool
	ConsoleStdout bool
	FileStdout    bool
	Level         string
	LocalTime     bool
	MaxAge        int
	MaxBackups    int
	MaxSize       int
	Path          string
}

func Init(conf *Config) {
	var syncWriters []zapcore.WriteSyncer
	level := getLoggerLevel(conf.Level)
	fileConfig := &lumberjack.Logger{
		Filename:   conf.Path,       // 日志文件名
		MaxSize:    conf.MaxSize,    // 日志文件大小
		MaxAge:     conf.MaxAge,     // 最长保存天数
		MaxBackups: conf.MaxBackups, // 最多备份几个
		LocalTime:  conf.LocalTime,  // 日志时间戳
		Compress:   conf.Compress,   // 是否压缩文件，使用gzip
	}
	encoder := zap.NewProductionEncoderConfig()
	encoder.EncodeTime = func(t time.Time, enc zapcore.PrimitiveArrayEncoder) {
		enc.AppendString(t.Format("2006-01-02 15:04:05"))
	}
	if conf.ConsoleStdout {
		syncWriters = append(syncWriters, zapcore.AddSync(os.Stdout))
	}
	if conf.FileStdout {
		syncWriters = append(syncWriters, zapcore.AddSync(fileConfig))
	}
	core := zapcore.NewCore(
		zapcore.NewJSONEncoder(encoder),
		zapcore.NewMultiWriteSyncer(syncWriters...),
		zap.NewAtomicLevelAt(level))
	logger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))
	log = logger.Sugar()
}

func getLoggerLevel(lvl string) zapcore.Level {
	if level, ok := levelMap[lvl]; ok {
		return level
	}
	return zapcore.InfoLevel
}

func Debug(args ...interface{}) {
	log.Debug(args...)
}

func Info(args ...interface{}) {
	log.Info(args...)
}

func Infof(format string, args ...interface{}) {
	log.Infof(format, args...)
}

func Warn(args ...interface{}) {
	log.Warn(args...)
}

func Error(args ...interface{}) {
	log.Error(args...)
}

func DPanic(args ...interface{}) {
	log.DPanic(args...)
}

func Panic(args ...interface{}) {
	log.Panic(args...)
}

func Fatal(args ...interface{}) {
	log.Fatal(args...)
}