com.remediatetheflag.global.actions.auth.user.GetHintForFlagQuestionAction.java Source code

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Here is the source code for com.remediatetheflag.global.actions.auth.user.GetHintForFlagQuestionAction.java

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/*
 *  
 * REMEDIATE THE FLAG
 * Copyright 2018 - Andrea Scaduto 
 * remediatetheflag@gmail.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.remediatetheflag.global.actions.auth.user;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.remediatetheflag.global.actions.IAction;
import com.remediatetheflag.global.messages.MessageGenerator;
import com.remediatetheflag.global.model.ExerciseInstance;
import com.remediatetheflag.global.model.ExerciseStatus;
import com.remediatetheflag.global.model.Flag;
import com.remediatetheflag.global.model.FlagQuestion;
import com.remediatetheflag.global.model.FlagQuestionHint;
import com.remediatetheflag.global.model.User;
import com.remediatetheflag.global.persistence.HibernatePersistenceFacade;
import com.remediatetheflag.global.utils.Constants;

public class GetHintForFlagQuestionAction extends IAction {

    private HibernatePersistenceFacade hpc = new HibernatePersistenceFacade();

    @Override
    public void doAction(HttpServletRequest request, HttpServletResponse response) throws Exception {

        JsonObject json = (JsonObject) request.getAttribute(Constants.REQUEST_JSON);
        JsonElement idQuestionElement = json.get(Constants.ACTION_PARAM_ID);
        Integer idQuestion = idQuestionElement.getAsInt();
        JsonElement idExerciseInstanceElement = json.get(Constants.ACTION_PARAM_ID_EXERCISE_INSTANCE);
        Integer idExerciseInstance = idExerciseInstanceElement.getAsInt();
        Integer idFlag = hpc.getFlagIdFromQuestionId(idQuestion);
        if (null == idFlag) {
            User user = (User) request.getSession().getAttribute(Constants.ATTRIBUTE_SECURITY_CONTEXT);
            logger.error("Flag not found for questionId " + idQuestion + " for user " + user.getIdUser());
            MessageGenerator.sendErrorMessage("HintUnavailable", response);
            return;
        }
        Flag f = hpc.getFlagWithHints(idFlag);

        FlagQuestionHint hint = null;
        for (FlagQuestion fq : f.getFlagQuestionList()) {
            if (fq.getId().equals(idQuestion)) {
                hint = fq.getHint();
                break;
            }
        }
        if (null != hint) {
            ExerciseInstance ei = hpc.getExerciseInstanceWithHints(idExerciseInstance);
            if (null != ei && null != ei.getStatus() && !ei.getStatus().equals(ExerciseStatus.RUNNING)) {
                User user = (User) request.getSession().getAttribute(Constants.ATTRIBUTE_SECURITY_CONTEXT);
                logger.error("Refused to provide hint " + hint.getId() + " for ExerciseInstance "
                        + ei.getIdExerciseInstance() + " with status " + ei.getStatus().toString() + " for user "
                        + user.getIdUser());
                MessageGenerator.sendErrorMessage("HintUnavailable", response);
                return;
            }
            boolean alreadyIn = false;
            for (FlagQuestionHint fqh : ei.getUsedHints()) {
                if (fqh.getId().equals(hint.getId())) {
                    alreadyIn = true;
                    break;
                }
            }
            if (!alreadyIn) {
                ei.getUsedHints().add(hint);
                hpc.updateExerciseInstanceUsedHints(ei, hint);
            }
            MessageGenerator.sendHintMessage(hint, response);
        } else {
            User user = (User) request.getSession().getAttribute(Constants.ATTRIBUTE_SECURITY_CONTEXT);
            logger.error("Hint not found for questionId " + idQuestion + " for user " + user.getIdUser());
            MessageGenerator.sendErrorMessage("HintUnavailable", response);
        }
    }
}