gopay/internal/jwt/encode.go

// Copyright 2024 perp (supernets)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package jwt

import (
	"fmt"
	"time"

	"github.com/golang-jwt/jwt"
	"github.com/rs/zerolog/log"
)

// Encode a token
func Encode(id int64) (string, error) {
	// Get time
	now := time.Now()

	// Create claims
	claims := &Claims{
		jwt.StandardClaims{
			IssuedAt:  now.Unix(),
			ExpiresAt: now.Add(time.Hour * 12).Unix(),
		},
		id,
	}

	// Create token claims
	tokenClaims := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)

	// Sign token with secret
	token, err := tokenClaims.SignedString(secret)
	if err != nil {
		log.Err(err).Str("id", fmt.Sprintf("%d", id)).Msg("Could not encode JWT claims")
		return "", err
	}

	return token, nil
}