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/*
* Copyright 2013 Jesse Morgan
*/
package com.p4square.grow.backend.resources;
import java.io.IOException;
import java.util.Map;
import java.util.HashMap;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.restlet.data.MediaType;
import org.restlet.data.Status;
import org.restlet.ext.jackson.JacksonRepresentation;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.restlet.resource.ServerResource;
import org.apache.log4j.Logger;
import com.p4square.grow.backend.GrowBackend;
import com.p4square.grow.model.Question;
import com.p4square.grow.provider.JsonEncodedProvider;
import com.p4square.grow.provider.Provider;
/**
* This resource manages assessment questions.
*
* @author Jesse Morgan <jesse@jesterpm.net>
*/
public class SurveyResource extends ServerResource {
private static final Logger LOG = Logger.getLogger(SurveyResource.class);
private static final ObjectMapper MAPPER = JsonEncodedProvider.MAPPER;
private Provider<String, Question> mQuestionProvider;
private Provider<String, String> mStringProvider;
private String mQuestionId;
@Override
public void doInit() {
super.doInit();
final GrowBackend backend = (GrowBackend) getApplication();
mQuestionProvider = backend.getQuestionProvider();
mStringProvider = backend.getStringProvider();
mQuestionId = getAttribute("questionId");
}
/**
* Handle GET Requests.
*/
@Override
protected Representation get() {
String result = "{}";
if (mQuestionId == null) {
// TODO: List all question ids
} else if (mQuestionId.equals("first")) {
// Get the first question id from db?
Map<?, ?> questionSummary = getQuestionsSummary();
mQuestionId = (String) questionSummary.get("first");
} else if (mQuestionId.equals("count")) {
// Get the first question id from db?
Map<?, ?> questionSummary = getQuestionsSummary();
return new StringRepresentation("{\"count\":" +
String.valueOf((Integer) questionSummary.get("count")) + "}");
}
if (mQuestionId != null) {
// Get a question by id
Question question = null;
try {
question = mQuestionProvider.get(mQuestionId);
} catch (IOException e) {
LOG.error("IOException loading question: " + e);
}
if (question == null) {
// 404
setStatus(Status.CLIENT_ERROR_NOT_FOUND);
return null;
}
JacksonRepresentation<Question> rep = new JacksonRepresentation<>(question);
rep.setObjectMapper(MAPPER);
return rep;
}
return new StringRepresentation(result);
}
private Map<?, ?> getQuestionsSummary() {
try {
// TODO: This could be better. Quick fix for provider support.
String json = mStringProvider.get("/questions");
if (json != null) {
return MAPPER.readValue(json, Map.class);
}
} catch (IOException e) {
LOG.info("Exception reading questions summary.", e);
}
return null;
}
}
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