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jwt.go
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jwt.go
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package jwt
import (
"fmt"
"strconv"
"time"
jwt "github.com/dgrijalva/jwt-go"
"github.com/riskykurniawan15/xarch/config"
)
type JwtToken struct {
cfg config.Config
}
func NewJwtToken(cfg config.Config) *JwtToken {
return &JwtToken{
cfg,
}
}
type JwtCustomClaims struct {
ID uint `json:"id"`
Email string `json:"email"`
}
func (JT JwtToken) GenerateToken(CustomClaims *JwtCustomClaims) (string, error) {
var mySigningKey = []byte(JT.cfg.JWT.SecretKey)
token := jwt.New(jwt.SigningMethodHS256)
claims := token.Claims.(jwt.MapClaims)
claims["id"] = CustomClaims.ID
claims["email"] = CustomClaims.Email
claims["exp"] = time.Now().Add(time.Hour * time.Duration(JT.cfg.JWT.Expired)).Unix()
tokenString, err := token.SignedString(mySigningKey)
if err != nil {
return "", err
}
return tokenString, nil
}
func (JT JwtToken) ClaimsToken(token string) (*JwtCustomClaims, error) {
var mySigningKey = []byte(JT.cfg.JWT.SecretKey)
TokenClaims, err := jwt.Parse(token, func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("there was an error in parsing")
}
return mySigningKey, nil
})
if err != nil {
return nil, fmt.Errorf("your token has expired")
}
claims, ok := TokenClaims.Claims.(jwt.MapClaims)
if ok && TokenClaims.Valid {
id, err := strconv.Atoi(fmt.Sprint(claims["id"]))
if err != nil {
return nil, fmt.Errorf("malformed id")
}
data := &JwtCustomClaims{
ID: uint(id),
Email: fmt.Sprint(claims["email"]),
}
return data, nil
}
return nil, fmt.Errorf("token not valid")
}