/**
 * Standalone signaling server for the Nextcloud Spreed app.
 * Copyright (C) 2026 struktur AG
 *
 * @author Joachim Bauch <bauch@struktur.de>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package grpc

import (
	"crypto/sha256"
	"encoding/hex"
	"fmt"
	"os"

	"github.com/strukturag/nextcloud-spreed-signaling/v2/internal"
)

var (
	ServerId string
)

func init() {
	hostname, err := os.Hostname()
	if err != nil {
		hostname = internal.RandomString(8)
	}
	md := sha256.New()
	fmt.Fprintf(md, "%s-%s-%d", internal.RandomString(32), hostname, os.Getpid())
	ServerId = hex.EncodeToString(md.Sum(nil))
}