intermediate commit with some methods implemented

pkg/op/error.go

@@ -1,6 +1,7 @@
 package op
 
 import (
+	"context"
 	"net/http"
 
 	httphelper "github.com/zitadel/oidc/v3/pkg/http"
@@ -66,3 +67,34 @@ func RequestError(w http.ResponseWriter, r *http.Request, err error, logger *slo
 	logger.Log(r.Context(), e.LogLevel(), "request error", "oidc_error", e)
 	httphelper.MarshalJSONWithStatus(w, e, status)
 }
+
+func TryErrorRedirect(ctx context.Context, authReq ErrAuthRequest, parent error, encoder httphelper.Encoder, logger *slog.Logger) (*Redirect, error) {
+	e := oidc.DefaultToServerError(parent, parent.Error())
+	logger = logger.With("oidc_error", e)
+
+	if authReq == nil {
+		logger.Log(ctx, e.LogLevel(), "auth request")
+		return nil, NewStatusError(parent, http.StatusBadRequest)
+	}
+
+	if logAuthReq, ok := authReq.(LogAuthRequest); ok {
+		logger = logger.With("auth_request", logAuthReq)
+	}
+
+	if authReq.GetRedirectURI() == "" || e.IsRedirectDisabled() {
+		logger.Log(ctx, e.LogLevel(), "auth request: not redirecting")
+		return nil, NewStatusError(parent, http.StatusBadRequest)
+	}
+
+	e.State = authReq.GetState()
+	var responseMode oidc.ResponseMode
+	if rm, ok := authReq.(interface{ GetResponseMode() oidc.ResponseMode }); ok {
+		responseMode = rm.GetResponseMode()
+	}
+	url, err := AuthResponseURL(authReq.GetRedirectURI(), authReq.GetResponseType(), responseMode, e, encoder)
+	if err != nil {
+		logger.ErrorContext(ctx, "auth response URL", "error", err)
+		return nil, NewStatusError(err, http.StatusBadRequest)
+	}
+	return NewRedirect(url), nil
+}