package utils

import (
	"regexp"
	"strings"

	"go.uber.org/zap"
)

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

var buffer []byte

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

func check() {
	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))
			buffer = nil
			InsertTelegram(telegram)
		}
	}

}