package messager

import (
	"fmt"
	"net"
	"strings"
	"time"
)

type Sender interface {
	SendMessage(message string) error
}

func FormatInitMsg(currentTime time.Time, publicIP net.IP, hostname string) string {
	formattedHostname := fmt.Sprintf("`%s`", hostname)
	formattedIP := strings.ReplaceAll(publicIP.String(), ".", "\\.")
	return fmt.Sprintf(`\[Host %s\] %s
Public IP tracker initialized\. Current IP is %s`, formattedHostname, currentTime.Format(time.RFC1123), formattedIP)
}

func FormatUpdate(currentTime time.Time, publicIP net.IP, hostname string) string {
	formattedHostname := fmt.Sprintf("`%s`", hostname)
	formattedIP := strings.ReplaceAll(publicIP.String(), ".", "\\.")
	return fmt.Sprintf(`\[Host %s\] %s
Public IP has changed, new IP is %s`, formattedHostname, currentTime.Format(time.RFC1123), formattedIP)
}