/*
 * $Id$
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.struts2.showcase.action;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import org.apache.log4j.Logger;
import org.apache.struts2.showcase.application.TestDataProvider;
import org.apache.struts2.showcase.dao.Dao;
import org.apache.struts2.showcase.dao.EmployeeDao;
import org.apache.struts2.showcase.model.Employee;
import org.apache.struts2.showcase.model.Skill;

import com.opensymphony.xwork2.Preparable;

/**
 * JsfEmployeeAction.
 */

public class EmployeeAction extends AbstractCRUDAction implements Preparable {

    private static final long serialVersionUID = 7047317819789938957L;

    private static final Logger log = Logger.getLogger(EmployeeAction.class);

    private Long empId;
    protected EmployeeDao employeeDao;
    private Employee currentEmployee;
    private List selectedSkills;

    public Long getEmpId() {
        return empId;
    }

    public void setEmpId(Long empId) {
        this.empId = empId;
    }

    public Employee getCurrentEmployee() {
        return currentEmployee;
    }

    public void setCurrentEmployee(Employee currentEmployee) {
        this.currentEmployee = currentEmployee;
    }

    public String[] getAvailablePositions() {
        return TestDataProvider.POSITIONS;
    }

    public List getAvailableLevels() {
        return Arrays.asList(TestDataProvider.LEVELS);
    }

    public List getSelectedSkills() {
        return selectedSkills;
    }

    public void setSelectedSkills(List selectedSkills) {
        this.selectedSkills = selectedSkills;
    }

    protected Dao getDao() {
        return employeeDao;
    }

    public void setEmployeeDao(EmployeeDao employeeDao) {
        if (log.isDebugEnabled()) {
            log.debug("JsfEmployeeAction - [setEmployeeDao]: employeeDao injected.");
        }
        this.employeeDao = employeeDao;
    }

    /**
     * This method is called to allow the action to prepare itself.
     *
     * @throws Exception thrown if a system level exception occurs.
     */
    public void prepare() throws Exception {
        Employee preFetched = (Employee) fetch(getEmpId(), getCurrentEmployee());
        if (preFetched != null) {
            setCurrentEmployee(preFetched);
        }
    }

    public String execute() throws Exception {
        if (getCurrentEmployee() != null && getCurrentEmployee().getOtherSkills() != null) {
            setSelectedSkills(new ArrayList());
            Iterator it = getCurrentEmployee().getOtherSkills().iterator();
            while (it.hasNext()) {
                getSelectedSkills().add(((Skill) it.next()).getName());
            }
        }
        return super.execute();
    }

    public String save() throws Exception {
        if (getCurrentEmployee() != null) {
            setEmpId((Long) employeeDao.merge(getCurrentEmployee()));
            employeeDao.setSkills(getEmpId(), getSelectedSkills());
        }
        return SUCCESS;
    }

}
