package utils

import (
	"regexp"
	"strings"

	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
)

const (
	EndTag     = "NNNN"
	Expression = "(?s)ZCZC.*NNNN"
)

var buffer []byte
var RawLog *rotatelogs.RotateLogs

func Append(data []byte) bool {
	buffer = append(buffer, data...)
	if buffer[len(buffer)-1] == '\r' {
		buffer = append(buffer, '\n')
	}
	return check()
}

func check() bool {
	teleString := string(buffer)
	if strings.Index(teleString, EndTag) > 0 {
		exp, _ := regexp.Compile(Expression)
		telegram := exp.FindString(string(buffer))

		if len(telegram) > 0 {
			// Log.Info("telegram ", zap.String("text", telegram))
			telegram = removeEmpty(telegram) + "\n"
			RawLog.Write([]byte(telegram))
			buffer = nil
			InsertTelegram(telegram)
			return true
		}
	}
	return false
}

func removeEmpty(s string) string {
	return regexp.MustCompile(`[\t\r\n]+`).ReplaceAllString(strings.TrimSpace(s), "\n")
}