add geneate jwt

jwt_adapter/jwt_adapter.go

@@ -5,9 +5,17 @@ import (
 	"fmt"
 	"github.com/dgrijalva/jwt-go"
 	"os"
+	"strings"
 	"time"
 )
 
+var publicKey = strings.Replace(`-----BEGIN PUBLIC KEY-----
+	MIGeMA0GCSqGSIb3DQEBAQUAA4GMADCBiAKBgHgnvr7O2tiApjJfid1orFnIGm69
+	80fZp+Lpbjo+NC/0whMFga2Biw5b1G2Q/B2u0tpO1Fs/E8z7Lv1nYfr5jx2S8x6B
+	dA4TS2kB9Kf0wn0+7wSlyikHoKhbtzwXHZl17GsyEi6wHnsqNBSauyIWhpha8i+Y
+	+3GyaOY536H47qyXAgMBAAE=
+	-----END PUBLIC KEY-----`, "\t", "", -1)
+
 const (
 	DefaultAccessSecret = "awesomeAC"
 	DefaultHeaderKey    = "Authorization"
@@ -15,7 +23,7 @@ const (
 
 var (
 	//_            cookie.Cookie = new(JwtAdapter)
-	accessSecret = DefaultAccessSecret
+	accessSecret = publicKey
 )
 
 type JwtAdapter struct {
@@ -91,3 +99,35 @@ func Decode(tokenString string) (*JwtAdapter, error) {
 func Timestamp() int64 {
 	return time.Now().UnixNano() / int64(time.Millisecond)
 }
+
+type ForCreate struct {
+	PrivateKey []byte
+	PublicKey  []byte
+	Algorithm  *jwt.SigningMethodRSA
+	ExpiresIn  time.Duration
+	Issuer     string
+	Audience   string
+}
+
+func Create(id string, forCreate ForCreate) (string, error) {
+	privateKey, err := jwt.ParseRSAPrivateKeyFromPEM(forCreate.PrivateKey)
+	if err != nil {
+		return "", fmt.Errorf("failed to parse private key: %w", err)
+	}
+
+	now := time.Now().UTC()
+
+	claims := jwt.MapClaims{
+		"id":  id,
+		"exp": now.Add(forCreate.ExpiresIn).Unix(),
+		"aud": forCreate.Audience,
+		"iss": forCreate.Issuer,
+	}
+
+	token, err := jwt.NewWithClaims(forCreate.Algorithm, claims).SignedString(privateKey)
+	if err != nil {
+		return "", fmt.Errorf("failed create jwt: %w", err)
+	}
+
+	return token, nil
+}