ParticipantFormServlet.java

package org.akaza.openclinica.control.submit;

import java.util.HashMap;
import java.util.Map;

import org.akaza.openclinica.control.core.SecureController;
import org.akaza.openclinica.service.crfdata.xform.EnketoAPI;
import org.akaza.openclinica.service.crfdata.xform.EnketoCredentials;
import org.akaza.openclinica.view.Page;
import org.akaza.openclinica.web.InsufficientPermissionException;

public class ParticipantFormServlet extends SecureController {

    public static final String CRF_ID = "crfOID";
    public static final String FORM_URL = "formURL";

    @Override
    protected void processRequest() throws Exception {
        String crf_oid = request.getParameter(CRF_ID);
        String formURL = null;

        // Build Enketo URL for CRF version.
        if (currentStudy.getStudyParameterConfig().getParticipantPortal().equals("enabled")) {
            EnketoCredentials credentials = getCredentials();
            EnketoAPI enketo = new EnketoAPI(credentials);
            formURL = enketo.getFormPreviewURL(crf_oid);
            if (!formURL.equals("")){
                response.sendRedirect(formURL);
            } else {
                if (credentials.getServerUrl() == null) {
                    addPageMessage(respage.getString("pform_preview_missing_url"));    
                } else {
                    if ((credentials.getApiKey() != null) && (credentials.getOcInstanceUrl() != null)) {
                        addPageMessage(respage.getString("pform_preview_forbidden"));        
                    } else {
                        addPageMessage(respage.getString("participate_not_available"));
                    }
                }
                forwardPage(Page.MENU_SERVLET);
            }
        }
    }

    @Override
    protected void mayProceed() throws InsufficientPermissionException {
        // Can validate user has proper permissions to access this page.
        // Throw InsufficientPermissionException if they don't.
        // For now we allow everyone access to this page.
        return;
    }

    private EnketoCredentials getCredentials() throws Exception {
        EnketoCredentials credentials = null;
        Map<String, EnketoCredentials> credentialsMap = (Map<String, EnketoCredentials>) session.getAttribute("EnketoCredentialsMap");
        if (credentialsMap == null) {
            credentialsMap = new HashMap<String, EnketoCredentials>();
            credentials = EnketoCredentials.getInstance(currentStudy.getOid());
            credentialsMap.put(currentStudy.getOid(), credentials);
            session.setAttribute("EnketoCredentialsMap", credentialsMap);
        } else if (credentialsMap.get(currentStudy.getOid()) == null) {
            credentials = EnketoCredentials.getInstance(currentStudy.getOid());
            credentialsMap.put(currentStudy.getOid(), credentials);
        } else
            credentials = credentialsMap.get(currentStudy.getOid());

        return credentials;
    }
}