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/*
* Copyright 2013 Jesse Morgan
*/
package com.p4square.grow.frontend;
import java.util.ArrayList;
import java.util.List;
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.representation.StringRepresentation;
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;
import com.p4square.grow.config.Config;
/**
* TrainingPageResource handles rendering the training page.
*
* This resource expects the user to be authenticated and the ClientInfo User object
* to be populated.
*
* @author Jesse Morgan <jesse@jesterpm.net>
*/
public class TrainingPageResource extends FreeMarkerPageResource {
private static Logger cLog = Logger.getLogger(TrainingPageResource.class);
private Config mConfig;
private Template mTrainingTemplate;
private JsonRequestClient mJsonClient;
// Fields pertaining to this request.
private String mChapter;
private String mUserId;
@Override
public void doInit() {
super.doInit();
GrowFrontend growFrontend = (GrowFrontend) getApplication();
mConfig = growFrontend.getConfig();
mTrainingTemplate = growFrontend.getTemplate("templates/training.ftl");
if (mTrainingTemplate == null) {
cLog.fatal("Could not find training template.");
setStatus(Status.SERVER_ERROR_INTERNAL);
}
mJsonClient = new JsonRequestClient(getContext().getClientDispatcher());
mChapter = getAttribute("chapter");
mUserId = getRequest().getClientInfo().getUser().getIdentifier();
}
/**
* Return a page of videos.
*/
@Override
protected Representation get() {
try {
// Get the training summary
Map<String, Object> trainingRecord = null;
Map<String, Object> completedVideos = new HashMap<String, Object>();
Map<String, Boolean> chapters = null;
{
JsonResponse response = backendGet("/accounts/" + mUserId + "/training");
if (response.getStatus().isSuccess()) {
trainingRecord = response.getMap();
completedVideos = (Map<String, Object>) trainingRecord.get("videos");
chapters = (Map<String, Boolean>) trainingRecord.get("chapters");
}
}
// Get the current chapter (the lowest, incomplete chapter)
if (mChapter == null) {
int min = Integer.MAX_VALUE;
for (Map.Entry<String, Boolean> chapter : chapters.entrySet()) {
int index = chapterIndex(chapter.getKey());
if (!chapter.getValue() && index < min) {
min = index;
mChapter = chapter.getKey();
}
}
if (mChapter == null) {
// Everything is completed... send them back to introduction.
mChapter = "introduction";
}
String nextPage = mConfig.getString("dynamicRoot", "");
nextPage += "/account/training/" + mChapter;
getResponse().redirectSeeOther(nextPage);
return new StringRepresentation("Redirecting to " + nextPage);
}
// Get videos for the chapter.
List<Map<String, Object>> videos = null;
{
JsonResponse response = backendGet("/training/" + mChapter);
if (!response.getStatus().isSuccess()) {
setStatus(Status.CLIENT_ERROR_NOT_FOUND);
return null;
}
videos = (List<Map<String, Object>>) response.getMap().get("videos");
}
// Mark the completed videos as completed
int chapterProgress = 0;
for (Map<String, Object> video : videos) {
boolean completed = (null != completedVideos.get(video.get("id")));
video.put("completed", completed);
if (completed) {
chapterProgress++;
}
}
chapterProgress = chapterProgress * 100 / videos.size();
Map root = getRootObject();
root.put("chapter", mChapter);
root.put("chapterProgress", chapterProgress);
root.put("videos", videos);
root.put("completedVideos", completedVideos);
return new TemplateRepresentation(mTrainingTemplate, root, MediaType.TEXT_HTML);
} catch (Exception e) {
cLog.fatal("Could not render page: " + e.getMessage(), e);
setStatus(Status.SERVER_ERROR_INTERNAL);
return ErrorPage.RENDER_ERROR;
}
}
/**
* @return The backend endpoint URI
*/
private String getBackendEndpoint() {
return mConfig.getString("backendUri", "riap://component/backend");
}
/**
* 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;
}
private 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;
}
int chapterIndex(String chapter) {
if ("teacher".equals(chapter)) {
return 4;
} else if ("disciple".equals(chapter)) {
return 3;
} else if ("believer".equals(chapter)) {
return 2;
} else if ("seeker".equals(chapter)) {
return 1;
} else {
return 0;
}
}
}
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