69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package jwt
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import (
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"errors"
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"time"
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"git.kanopo.dev/rhythm/rhythm-backend/internal/config"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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UserID string `json:"userId"`
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jwt.RegisteredClaims
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}
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type TokenPair struct {
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AccessToken string
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RefreshToken string
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}
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func GenerateTokenPair(userID string, cfg *config.Config) (TokenPair, error) {
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accessToken, err := generateToken(userID, cfg.JWTSecret, cfg.JWTExpiry)
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if err != nil {
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return TokenPair{}, err
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}
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refreshToken, err := generateToken(userID, cfg.JWTSecret, cfg.RefreshExpiry)
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if err != nil {
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return TokenPair{}, err
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}
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return TokenPair{
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AccessToken: accessToken,
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RefreshToken: refreshToken,
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}, nil
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}
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func generateToken(userID, secret string, expiry time.Duration) (string, error) {
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claims := &Claims{
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UserID: userID,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(expiry)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(secret))
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}
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func ValidateToken(tokenString, secret string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, 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.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, errors.New("invalid token")
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}
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