diff options
Diffstat (limited to 'src/com/p4square/grow')
| -rw-r--r-- | src/com/p4square/grow/frontend/GrowFrontend.java | 11 | ||||
| -rw-r--r-- | src/com/p4square/grow/frontend/SurveyPageResource.java | 205 |
2 files changed, 215 insertions, 1 deletions
diff --git a/src/com/p4square/grow/frontend/GrowFrontend.java b/src/com/p4square/grow/frontend/GrowFrontend.java index 85b223b..72e2a8f 100644 --- a/src/com/p4square/grow/frontend/GrowFrontend.java +++ b/src/com/p4square/grow/frontend/GrowFrontend.java @@ -28,12 +28,21 @@ public class GrowFrontend extends FMFacade { protected Router createRouter() { Router router = new Router(getContext()); - final LoginAuthenticator defaultGuard = + final LoginAuthenticator defaultGuard = new LoginAuthenticator(getContext(), true, "login.html"); defaultGuard.setNext(FreeMarkerPageResource.class); router.attachDefault(defaultGuard); router.attach("/login.html", LoginPageResource.class); + final Router accountRouter = new Router(getContext()); + accountRouter.attach("/assessment/question/{questionId}", SurveyPageResource.class); + accountRouter.attach("/assessment", SurveyPageResource.class); + + final LoginAuthenticator accountGuard = + new LoginAuthenticator(getContext(), false, "login.html"); + accountGuard.setNext(accountRouter); + router.attach("/account", accountGuard); + return router; } diff --git a/src/com/p4square/grow/frontend/SurveyPageResource.java b/src/com/p4square/grow/frontend/SurveyPageResource.java new file mode 100644 index 0000000..72a2d34 --- /dev/null +++ b/src/com/p4square/grow/frontend/SurveyPageResource.java @@ -0,0 +1,205 @@ +/* + * Copyright 2013 Jesse Morgan + */ + +package com.p4square.grow.frontend; + +import java.util.Map; +import java.util.HashMap; + +import freemarker.template.Template; + +import org.restlet.data.Form; +import org.restlet.data.MediaType; +import org.restlet.data.Status; +import org.restlet.ext.freemarker.TemplateRepresentation; +import org.restlet.representation.Representation; +import org.restlet.resource.ServerResource; + +import org.apache.log4j.Logger; + +import net.jesterpm.fmfacade.json.JsonRequestClient; +import net.jesterpm.fmfacade.json.JsonResponse; + +import net.jesterpm.fmfacade.FreeMarkerPageResource; + +/** + * SurveyPageResource handles rendering the survey and processing user's answers. + * + * This resource expects the user to be authenticated and the ClientInfo User object + * to be populated. Each question is requested from the backend along with the + * user's previous answer. Each answer is sent to the backend and the user is redirected + * to the next question. After the last question the user is sent to his results. + * + * @author Jesse Morgan <jesse@jesterpm.net> + */ +public class SurveyPageResource extends FreeMarkerPageResource { + private static Logger cLog = Logger.getLogger(SurveyPageResource.class); + + private Template mSurveyTemplate; + private JsonRequestClient mJsonClient; + + // Fields pertaining to this request. + private String mQuestionId; + private String mUserId; + + @Override + public void doInit() { + super.doInit(); + + GrowFrontend growFrontend = (GrowFrontend) getApplication(); + mSurveyTemplate = growFrontend.getTemplate("templates/survey.ftl"); + if (mSurveyTemplate == null) { + cLog.fatal("Could not find survey template."); + setStatus(Status.SERVER_ERROR_INTERNAL); + } + + mJsonClient = new JsonRequestClient(getContext().getClientDispatcher()); + + mQuestionId = getAttribute("questionId"); + mUserId = getRequest().getClientInfo().getUser().getIdentifier(); + } + + /** + * Return a page with a survey question. + */ + @Override + protected Representation get() { + try { + // Get the current question. + if (mQuestionId == null) { + // TODO: Get user's current question + mQuestionId = "1"; + } + + Map questionData = null; + { + JsonResponse response = backendGet("/assessment/question/" + mQuestionId); + if (!response.getStatus().isSuccess()) { + setStatus(Status.CLIENT_ERROR_NOT_FOUND); + return null; + } + questionData = response.getMap(); + } + + // Get any previous answer to the question + String selectedAnswer = null; + { + JsonResponse response = backendGet("/accounts/" + mUserId + "/assessment/answers/" + mQuestionId); + if (response.getStatus().isSuccess()) { + selectedAnswer = (String) response.getMap().get("answerId"); + } + } + + Map root = getRootObject(); + root.put("question", questionData); + root.put("selectedAnswerId", selectedAnswer); + + return new TemplateRepresentation(mSurveyTemplate, root, MediaType.TEXT_HTML); + + } catch (Exception e) { + cLog.fatal("Could not render page: " + e.getMessage(), e); + setStatus(Status.SERVER_ERROR_INTERNAL); + return null; + } + } + + /** + * Record a survey answer and redirect to the next question. + */ + @Override + protected Representation post(Representation entity) { + final Form form = new Form(entity); + final String answerId = form.getFirstValue("answer"); + + if (mQuestionId == null || answerId == null || answerId.length() == 0) { + // Something is wrong. + setStatus(Status.CLIENT_ERROR_BAD_REQUEST); + return null; + } + + try { + // Find the question + Map questionData = null; + { + JsonResponse response = backendGet("/assessment/question/" + mQuestionId); + if (!response.getStatus().isSuccess()) { + // User is answering a question which doesn't exist + setStatus(Status.CLIENT_ERROR_NOT_FOUND); + return null; + } + + questionData = response.getMap(); + } + + // Store answer + { + Map<String, String> answer = new HashMap<String, String>(); + answer.put("answerId", answerId); + JsonResponse response = backendPut("/accounts/" + mUserId + + "/assessment/answers/" + mQuestionId, answer); + + if (!response.getStatus().isSuccess()) { + // Something went wrong talking to the backend, error out. + cLog.fatal("Error recording survey answer " + response.getStatus()); + setStatus(Status.SERVER_ERROR_INTERNAL); + return null; + } + } + + // Find the next question or finish the assessment. + String nextPage; + { + String nextQuestionId = (String) questionData.get("nextQuestion"); + if (nextQuestionId == null) { + nextPage = "/account/assessment/results"; + } else { + nextPage = "/account/assessment/question/" + nextQuestionId; + } + } + + getResponse().redirectSeeOther(nextPage); + return null; + + } catch (Exception e) { + cLog.fatal("Could not render page: " + e.getMessage(), e); + setStatus(Status.SERVER_ERROR_INTERNAL); + return null; + } + } + + /** + * @return The backend endpoint URI + */ + private String getBackendEndpoint() { + // TODO: Config + return "http://localhost:9095"; + } + + /** + * Helper method to send a GET to the backend. + */ + private JsonResponse backendGet(final String uri) { + cLog.debug("Sending backend GET " + uri); + + final JsonResponse response = mJsonClient.get(getBackendEndpoint() + uri); + final Status status = response.getStatus(); + if (!status.isSuccess() && !Status.CLIENT_ERROR_NOT_FOUND.equals(status)) { + cLog.warn("Error making backend request for '" + uri + "'. status = " + response.getStatus().toString()); + } + + return response; + } + + protected JsonResponse backendPut(final String uri, final Map data) { + cLog.debug("Sending backend PUT " + uri); + + final JsonResponse response = mJsonClient.put(getBackendEndpoint() + uri, data); + final Status status = response.getStatus(); + if (!status.isSuccess() && !Status.CLIENT_ERROR_NOT_FOUND.equals(status)) { + cLog.warn("Error making backend request for '" + uri + "'. status = " + response.getStatus().toString()); + } + + return response; + } +} |