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jwt.go
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/
jwt.go
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package middleware
import (
"fmt"
"github.com/golang-jwt/jwt"
)
var (
SECRET_KEY = []byte("RAHASIA")
)
func GenerateToken(userID int, role string) (string, error) {
claim := jwt.MapClaims{}
claim["id_user"] = userID
claim["role_user"] = role
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claim)
tokenString, err := token.SignedString(SECRET_KEY)
if err != nil {
return tokenString, err
}
return tokenString, nil
}
func ValidateToken(tokenString string) (int, string, error) {
var userID int
var userRole string
token, err := jwt.Parse(tokenString, func(t *jwt.Token) (interface{}, error) {
if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
}
return []byte(SECRET_KEY), nil
})
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
userID = int(claims["id_user"].(float64))
userRole = string(claims["role_user"].(string))
return userID, userRole, nil
} else {
return userID, userRole, err
}
}