package nechotron

import (
	"fmt"
	"regexp"
	"strings"

	"github.com/NicoNex/echotron/v3"
)

var chars = []string{"_", "\\*", "\\[", "\\]", "\\(", "\\)", "~", "`", ">", "#", "\\+", "\\-", "=", "|", "{", "}", "\\.", "!"}
var r = strings.Join(chars, "")
var reg = regexp.MustCompile("[" + r + "]+")

func EscapeMd2(s string) string {
	return reg.ReplaceAllString(s, "\\$0")
}

func UserMention(u *echotron.User) string {
	return fmt.Sprintf("[%s](tg://user?id=%d)", EscapeMd2(u.FirstName), u.ID)
}