package org.hisp.dhis.commons.action;

/*
 * Copyright (c) 2004-2015, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.util.Set;

import org.hisp.dhis.dataelement.DataElement;
import org.hisp.dhis.dataelement.DataElementCategoryCombo;
import org.hisp.dhis.dataelement.DataElementCategoryOptionCombo;
import org.hisp.dhis.dataelement.DataElementCategoryService;
import org.hisp.dhis.dataelement.DataElementService;

import com.opensymphony.xwork2.Action;

/**
 * @author Lars Helge Overland
 */
public class GetCategoryOptionCombosAction
    implements Action
{
    // -------------------------------------------------------------------------
    // Dependencies
    // -------------------------------------------------------------------------

    private DataElementService dataElementService;

    public void setDataElementService( DataElementService dataElementService )
    {
        this.dataElementService = dataElementService;
    }
    
    private DataElementCategoryService categoryService;

    public void setCategoryService( DataElementCategoryService categoryService )
    {
        this.categoryService = categoryService;
    }

    // -------------------------------------------------------------------------
    // Input
    // -------------------------------------------------------------------------

    private Integer id;

    public void setId( Integer id )
    {
        this.id = id;
    }

    private Integer categoryComboId;

    public void setCategoryComboId( Integer categoryComboId )
    {
        this.categoryComboId = categoryComboId;
    }
    
    private String categoryComboUid;

    public void setCategoryComboUid( String categoryComboUid )
    {
        this.categoryComboUid = categoryComboUid;
    }

    // -------------------------------------------------------------------------
    // Output
    // -------------------------------------------------------------------------

    private Set<DataElementCategoryOptionCombo> categoryOptionCombos;

    public Set<DataElementCategoryOptionCombo> getCategoryOptionCombos()
    {
        return categoryOptionCombos;
    }

    // -------------------------------------------------------------------------
    // Action implementation
    // -------------------------------------------------------------------------

    @Override
    public String execute()
    {
        if ( id != null )
        {
            DataElement dataElement = dataElementService.getDataElement( id );

            if ( dataElement != null )
            {
                DataElementCategoryCombo categoryCombo = dataElement.getCategoryCombo();

                if ( categoryCombo != null )
                {
                    categoryOptionCombos = categoryCombo.getOptionCombos();
                }
            }
        }
        else if ( categoryComboId != null )
        {
            DataElementCategoryCombo categoryCombo = categoryService.getDataElementCategoryCombo( categoryComboId );
            
            if ( categoryCombo != null )
            {
                categoryOptionCombos = categoryCombo.getOptionCombos();
            }
        }
        else if ( categoryComboUid != null )
        {
            DataElementCategoryCombo categoryCombo = categoryService.getDataElementCategoryCombo( categoryComboUid );
            
            if ( categoryCombo != null )
            {
                categoryOptionCombos = categoryCombo.getOptionCombos();
            }
        }

        return SUCCESS;
    }
}
