package logger

import (
	"io"
	"os"
	"path/filepath"
	"runtime"
	"sync"

	"git.tcp.direct/kayos/zwrap"
	"github.com/rs/zerolog"
)

var (
	logger    zerolog.Logger
	setupOnce = &sync.Once{}
)

func Get() *zwrap.Logger {
	setupOnce.Do(func() {
		if err := Setup("", zerolog.TraceLevel); err != nil {
			println(err.Error())
			os.Exit(1)
		}
	})
	return zwrap.Wrap(logger)
}

//goland:noinspection GoBoolExpressions
func consoleWriter() zerolog.ConsoleWriter {
	return zerolog.ConsoleWriter{
		Out:     os.Stdout,
		NoColor: runtime.GOOS == "windows",
	}
}

func fileWriter(path string) (io.Writer, error) {
	if path == "" {
		return io.Discard, nil
	}
	var err error
	if err = os.MkdirAll(path, 0755); err != nil {
		return nil, err
	}
	var f *os.File
	if f, err = os.OpenFile(filepath.Join(path, "door5.log"), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644); err != nil {
		return nil, err
	}
	return f, nil

}

func Setup(path string, level zerolog.Level) error {
	var err error
	var fw io.Writer
	if fw, err = fileWriter(path); err != nil {
		return err
	}
	cw := consoleWriter()
	mw := zerolog.MultiLevelWriter(cw, fw)
	logger = zerolog.New(mw).With().Timestamp().Logger().Level(level)
	return nil
}