Qingshan Chen
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package utils
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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// TokenClaims represents JWT token claims
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type TokenClaims struct {
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UserID int `json:"user_id"`
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TokenType string `json:"token_type"`
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jwt.RegisteredClaims
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}
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// GenerateToken generates a new JWT token
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func GenerateToken(claims TokenClaims, secret string, expiry time.Duration) (string, error) {
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now := time.Now()
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claims.RegisteredClaims = jwt.RegisteredClaims{
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(expiry)),
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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tokenString, err := token.SignedString([]byte(secret))
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if err != nil {
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return "", err
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}
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return tokenString, nil
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}
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// ValidateToken validates a JWT token and returns its claims
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func ValidateToken(tokenString, secret string) (*TokenClaims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &TokenClaims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, errors.New("unexpected signing method")
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}
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return []byte(secret), nil
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})
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if err != nil {
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return nil, err
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}
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if claims, ok := token.Claims.(*TokenClaims); ok && token.Valid {
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return claims, nil
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}
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return nil, errors.New("invalid token claims")
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}
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