func()

in pkg/provider/okta/okta.go [167:232]

• 60 lines of code
• 15 McCabe index (conditional complexity)

func (oc *Client) follow(ctx context.Context, req *http.Request, loginDetails *creds.LoginDetails) (string, error) {

	res, err := oc.client.Do(req)
	if err != nil {
		return "", errors.Wrap(err, "error following")
	}
	doc, err := goquery.NewDocumentFromResponse(res)
	if err != nil {
		return "", errors.Wrap(err, "failed to build document from response")
	}

	var handler func(context.Context, *goquery.Document) (context.Context, *http.Request, error)

	if docIsFormRedirectToAlibabaCloud(doc) {
		logger.WithField("type", "saml-response").Debug("doc detect")
		if samlResponse, ok := extractSAMLResponse(doc); ok {
			decodedSamlResponse, err := base64.StdEncoding.DecodeString(samlResponse)
			if err != nil {
				return "", errors.Wrap(err, "failed to decode saml-response")
			}
			logger.WithField("type", "saml-response").WithField("saml-response", string(decodedSamlResponse)).Debug("doc detect")
			return samlResponse, nil
		}
	} else if docIsFormSamlRequest(doc) {
		logger.WithField("type", "saml-request").Debug("doc detect")
		handler = oc.handleFormRedirect
	} else if docIsFormResume(doc) {
		logger.WithField("type", "resume").Debug("doc detect")
		handler = oc.handleFormRedirect
	} else if docIsFormSamlResponse(doc) {
		logger.WithField("type", "saml-response").Debug("doc detect")
		handler = oc.handleFormRedirect
	} else {
		req, err = http.NewRequest("GET", loginDetails.URL, nil)
		if err != nil {
			return "", errors.Wrap(err, "error building app request")
		}
		res, err = oc.client.Do(req)
		if err != nil {
			return "", errors.Wrap(err, "error retrieving app response")
		}
		body, err := ioutil.ReadAll(res.Body)
		if err != nil {
			return "", errors.Wrap(err, "error retrieving body from response")
		}
		stateToken, err := getStateTokenFromOktaPageBody(string(body))
		if err != nil {
			return "", errors.Wrap(err, "error retrieving saml response")
		}
		loginDetails.StateToken = stateToken
		return oc.Authenticate(loginDetails)
	}

	if handler == nil {
		html, _ := doc.Selection.Html()
		logger.WithField("doc", html).Debug("Unknown document type")
		return "", fmt.Errorf("Unknown document type")
	}

	ctx, req, err = handler(ctx, doc)
	if err != nil {
		return "", err
	}
	return oc.follow(ctx, req, loginDetails)

}