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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.resource.ServerResource;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.apache.log4j.Logger;
import com.p4square.grow.backend.GrowBackend;
import com.p4square.grow.backend.db.CassandraDatabase;
/**
* 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 = new ObjectMapper();
private CassandraDatabase mDb;
private String mQuestionId;
@Override
public void doInit() {
super.doInit();
final GrowBackend backend = (GrowBackend) getApplication();
mDb = backend.getDatabase();
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
result = mDb.getKey("strings", "/questions/" + mQuestionId);
if (result == null) {
// 404
setStatus(Status.CLIENT_ERROR_NOT_FOUND);
return null;
}
}
return new StringRepresentation(result);
}
private Map<?, ?> getQuestionsSummary() {
try {
String json = mDb.getKey("strings", "/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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