package logger

import (
	"io"
	"log/slog"
	"os"
	"strings"
)

import (
	"gopkg.in/natefinch/lumberjack.v2"
)

import (
	"protocol-server/common"
)

var lumberJackLogger *lumberjack.Logger
var logger *slog.Logger

func SetupLogger(persisted bool) {
	//设置日志级别
	var level = new(slog.LevelVar)
	switch common.LoggerConfig.LogLevel {
	case "DEBUG":
		level.Set(slog.LevelDebug)
	case "INFO":
		level.Set(slog.LevelInfo)
	case "WARN":
		level.Set(slog.LevelWarn)
	case "ERROR":
		level.Set(slog.LevelError)
	default:
		level.Set(slog.LevelInfo)
	}
	opts := &slog.HandlerOptions{
		Level:     level,
		AddSource: true,
	}

	filename := common.LoggerConfig.LogDir + "/protocol.log"
	if strings.HasSuffix(common.LoggerConfig.LogDir, "/") {
		filename = common.LoggerConfig.LogDir + "protocol.log"
	}
	lumberJackLogger = &lumberjack.Logger{
		Filename:   filename,                       //日志文件的位置
		MaxSize:    common.LoggerConfig.MaxSize,    //在进行切割之前，日志文件的最大大小（以MB为单位）
		MaxBackups: common.LoggerConfig.MaxBackups, //最多保留文件个数
		MaxAge:     common.LoggerConfig.MaxAge,     //保留旧文件的最大天数
		Compress:   common.LoggerConfig.Compress,   //是否压缩/归档旧文件
		LocalTime:  true,
	}

	if persisted {
		if common.LoggerConfig.Stdout {
			logger = slog.New(slog.NewTextHandler(io.MultiWriter(lumberJackLogger, os.Stdout), opts))
		} else {
			logger = slog.New(slog.NewTextHandler(lumberJackLogger, opts))
		}
	} else {
		logger = slog.New(slog.NewTextHandler(os.Stdout, opts))
	}
	slog.SetDefault(logger)
	//todo 输出到robot

	slog.Info("setup logger ok",
		"level", level.String(),
		"filename", filename,
		"max size", common.LoggerConfig.MaxSize,
		"max backups", common.LoggerConfig.MaxBackups,
		"max age", common.LoggerConfig.MaxAge,
		"compress", common.LoggerConfig.Compress,
	)
}

func ShutdownLogger() {
	lumberJackLogger.Rotate()
}

func WithGroup(name string) *slog.Logger {
	return logger.WithGroup(name)
}

func With(args ...any) *slog.Logger {
	return logger.With(args)
}