/**
 * 
 */
package com.onaro.sanscreen.client.view.changes;

import java.text.DateFormat;
import java.util.Date;

import org.apache.commons.lang3.StringUtils;

import com.onaro.sanscreen.server.interfaces.data.AbstractDataObjectDescription;
import com.onaro.sanscreen.server.interfaces.data.IDataObjectDescription;
import com.onaro.sanscreen.server.interfaces.data.TimeContext;
import com.onaro.sanscreen.types.ChangeType;

/**
 * Creates an {@link IDataObjectDescription} instance for a {@link ChangesSelectedObject}.
 */
/*package*/ final class ChangesDescription extends AbstractDataObjectDescription {
    
    private static final DateFormat dateFormat = 
        DateFormat.getDateTimeInstance (DateFormat.SHORT, DateFormat.SHORT);
    private final ChangeType changeType;
    private final Date changeTime;
    
    /**
     * @param changeType {@link ChangeType}
     * @param changeTime {@link TimeContext}
     */
    public ChangesDescription (ChangeType changeType, Date changeTime) {
        this.changeType = changeType;
        this.changeTime = changeTime;
    }

    @Override
    public String getName() {
        // Use change type for name.
        return changeType.getDescription();
    }
    
    @Override
    public String getLongDescription() {
        String timestamp = changeTime == null?
                StringUtils.EMPTY : dateFormat.format (changeTime);
        // TODO: Replace changeType.getDescription() with algorithm that uses SummaryFactory class.
        // See defect 23550.
        return com.onaro.sanscreen.client.Messages.INSTANCE.getChangeSelectionHtml (
                timestamp, changeType.getDescription());
    }
}