/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      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 org.jbpm.services.task.audit.service;

import static org.kie.internal.query.QueryParameterIdentifiers.*;

import java.util.Date;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;

import org.jbpm.process.audit.JPAAuditLogService;
import org.jbpm.query.jpa.data.QueryWhere;
import org.jbpm.query.jpa.impl.QueryCriteriaUtil;
import org.jbpm.services.task.audit.BAMTaskSummaryQueryBuilder;
import org.jbpm.services.task.audit.impl.model.AuditTaskImpl;
import org.jbpm.services.task.audit.impl.model.BAMTaskSummaryImpl;
import org.jbpm.services.task.audit.impl.model.TaskEventImpl;
import org.kie.internal.task.query.AuditTaskDeleteBuilder;
import org.kie.internal.task.query.AuditTaskQueryBuilder;
import org.kie.internal.task.query.TaskEventDeleteBuilder;
import org.kie.internal.task.query.TaskEventQueryBuilder;
import org.kie.internal.task.query.TaskVariableQueryBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TaskJPAAuditService extends JPAAuditLogService {

	private static final Logger logger = LoggerFactory.getLogger(TaskJPAAuditService.class);

	static {
        addCriteria(CREATED_ON_LIST, "l.createdOn", Date.class);
        addCriteria(DEPLOYMENT_ID_LIST, "l.deploymentId", String.class);
        addCriteria(TASK_EVENT_DATE_ID_LIST, "l.logTime", Date.class);
        addCriteria(TASK_ID_LIST, "l.taskId", Long.class);
        addCriteria(TASK_NAME_LIST, "l.name", String.class);
        addCriteria(TASK_DESCRIPTION_LIST, "l.description", String.class);
        addCriteria(TASK_STATUS_LIST, "l.status", String.class);
	}

	public TaskJPAAuditService() {
		super();
	}

	public TaskJPAAuditService(EntityManagerFactory emf) {
		super(emf);
	}

	// Methods needed by the TaskAuditQueryCriteriaUtil
	protected EntityManager getEntityManager() {
	    return super.getEntityManager();
	}

	protected Object joinTransaction(EntityManager em) {
	    return super.joinTransaction(em);
	}

	protected void closeEntityManager(EntityManager em, Object transaction) {
	    super.closeEntityManager(em, transaction);
	}

	// Query API Delete methods ---------------------------------------------------------------------------------------------------

	public AuditTaskDeleteBuilder auditTaskDelete() {
		return new AuditTaskDeleteBuilderImpl(this);
	}

	public TaskEventDeleteBuilder taskEventInstanceLogDelete(){
		return new TaskEventDeleteBuilderImpl(this);
	}

	@Override
    public void clear() {
	    auditTaskDelete().build().execute();

        taskEventInstanceLogDelete().build().execute();
	    try {
    		super.clear();
    	} catch (Exception e) {
    		logger.warn("Unable to clear using {} due to {}", super.getClass().getName(), e.getMessage());
    	}    	
    }

	// Query API Query methods ---------------------------------------------------------------------------------------------------

    public AuditTaskQueryBuilder auditTaskQuery() {
		return new AuditTaskQueryBuilderImpl(this);
	}

	public BAMTaskSummaryQueryBuilder bamTaskSummaryQuery() {
		return new BAMTaskSummaryQueryBuilderImpl(this);
	}

	public TaskEventQueryBuilder taskEventQuery() {
		return new TaskEventQueryBuilderImpl(this);
	}

	public TaskVariableQueryBuilder taskVariableQuery() {
	    return new TaskVariableQueryBuilderImpl(this);
	}

	private final TaskAuditQueryCriteriaUtil queryCriteriaUtil = new TaskAuditQueryCriteriaUtil(this);

    @Override
    protected QueryCriteriaUtil getQueryCriteriaUtil(Class queryType) {
        if( queryType.equals(AuditTaskImpl.class)
                || queryType.equals(TaskEventImpl.class)
                || queryType.equals(BAMTaskSummaryImpl.class) ) {
            return queryCriteriaUtil;
        } else {
            return super.getQueryCriteriaUtil(queryType);
        }
    }
}
