refactor: just try to parse and check expire without verification

api/oauth.go

@@ -57,30 +57,28 @@ func (o oauth) loadToken(config *oauth2.Config) {
 	}
 
 	if o.token != nil {
-		parsedToken, err := jwt.Parse(o.cfg.Oauth.Token, func(token *jwt.Token) (interface{}, error) {
-			return nil, nil
-		})
+		valid := false
+		parseToken, _, err := new(jwt.Parser).ParseUnverified(o.cfg.Oauth.Token, jwt.MapClaims{})
 
 		if err != nil {
-			o.logger.Fatal("Error parsing token", zap.Error(err))
-		}
-
-		valid := false
-
-		if claims, ok := parsedToken.Claims.(jwt.MapClaims); ok && parsedToken.Valid {
-			if exp, ok := claims["exp"].(float64); ok {
-				expirationTime := time.Unix(int64(exp), 0)
-				if time.Now().Before(expirationTime) {
-					valid = true
-					o.token.Expiry = expirationTime
+			o.logger.Error("Error parsing token", zap.Error(err))
+		} else {
+			// Assert the token's claims to the desired type (MapClaims in this case)
+			if claims, ok := parseToken.Claims.(jwt.MapClaims); ok {
+				if exp, ok := claims["exp"].(float64); ok {
+					expirationTime := time.Unix(int64(exp), 0)
+					if time.Now().Before(expirationTime) {
+						valid = true
+						o.token.Expiry = expirationTime
+					}
 				}
 			}
-		}
 
-		if valid {
-			token = o.token
-		} else {
-			o.logger.Info("Token is expired, ignoring")
+			if valid {
+				token = o.token
+			} else {
+				o.logger.Info("Token is expired, ignoring")
+			}
 		}
 	}