package utils

import (
	"fmt"
	"log"
	"strings"

	"gitea.unprism.ru/KRBL/sim-modem/api/modem/at"
)

func CheckService(port at.Port, logger *log.Logger) (bool, error) {
	srv, err := getService(port)
	if err != nil {
		return false, fmt.Errorf("get service: %w", err)
	}
	if srv == "NO SERVICE" {
		return false, nil
	}
	logger.Println("Current service:", srv)
	return true, nil
}

// Returns service
func getService(port at.Port) (string, error) {
	resp, err := port.Send("AT+CPSI?")
	if err != nil {
		return "", err
	}
	if !resp.Check() || !resp.CheckFront("+CPSI: ") {
		return "", fmt.Errorf("error response: %s", resp)
	}
	values := strings.Split(strings.ReplaceAll(strings.Split(resp.RmFront("+CPSI: ").String(), "\n")[0], "\r", ""), ",")
	if len(values) < 2 {
		return "", fmt.Errorf("invalid values(len): [% s]", values)
	}
	return values[0], nil
}