package org.maltparser.core.options;

import java.util.Collection;
import java.util.HashMap;
import java.util.TreeSet;
import org.maltparser.core.options.option.Option;

/**
 * An option group categories a group of options.
 *
 * @author Johan Hall
 * @since 1.0
*
 */
public class OptionGroup {

    private String name;
    private HashMap<String, Option> options;
    public static int toStringSetting = 0;
    public final static int WITHGROUPNAME = 0;
    public final static int NOGROUPNAME = 1;

    /**
     * Creates an option group with an option group name.
     *
     * @param name	The name of the option group
     */
    public OptionGroup(String name) {
        setName(name);
        options = new HashMap<String, Option>();
    }

    /**
     * Returns the name of the option group
     *
     * @return	the name of the option group
     */
    public String getName() {
        return name;
    }

    /**
     * Sets the name of the option group
     *
     * @param name	the name of the option group
     */
    public void setName(String name) {
        this.name = name.toLowerCase();
    }

    /**
     * Adds an option to the option group.
     *
     * @param option	an option
     * @throws OptionException
     */
    public void addOption(Option option) throws OptionException {
        if (option.getName() == null || option.getName().equals("")) {
            throw new OptionException("The option name is null or contains the empty string. ");
        } else if (options.containsKey(option.getName().toLowerCase())) {
            throw new OptionException("The option name already exists for that option group. ");
        } else {
            options.put(option.getName().toLowerCase(), option);
        }
    }

    /**
     * Returns the option according to the option name.
     *
     * @param optionname	an option name
     * @return	an option, <i>null</i> if the option name can't be found
     */
    public Option getOption(String optionname) {
        return options.get(optionname);
    }

    /**
     * Returns all options for this option group.
     *
     * @return	a list of options
     */
    public Collection<Option> getOptionList() {
        return options.values();
    }

    /*
     * (non-Javadoc) @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
//		for (String value : new TreeSet<String>(options.keySet())) {
//			sb.append("super.put(\""); 
//			sb.append("--");
//			sb.append(name);
//			sb.append("-");
//			sb.append(options.get(value).getName());
//			sb.append("\", \"");
//			sb.append(options.get(value).getDefaultValueString());
//			sb.append("\");\n");
//		}

        if (OptionGroup.toStringSetting == OptionGroup.WITHGROUPNAME) {
            sb.append("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
            sb.append("+ ").append(name).append("\n");
            sb.append("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
        }

        for (String value : new TreeSet<String>(options.keySet())) {
            sb.append(options.get(value).toString());
        }
        return sb.toString();
    }
}