/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.operator.preprocessing.filter;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;

import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.preprocessing.AbstractDataProcessing;

/**
 * @author Sebastian Land
 *
 */
public abstract class AbstractDateDataProcessing extends AbstractDataProcessing {

	public static final String[] TIME_UNITS = { "millisecond" ,
		"second" , "minute" , "hour" , "day" , "week" , "month" ,
		"quarter" , "half year" , "year" };

	public static final int MILLISECOND = 0;
	public static final int SECOND = 1;
	public static final int MINUTE = 2;
	public static final int HOUR = 3;
	public static final int DAY = 4;
	public static final int WEEK = 5;
	public static final int MONTH = 6;
	public static final int QUARTER = 7;
	public static final int HALF_YEAR = 8;
	public static final int YEAR = 9;

	public static final String[] PARAMETERS_RELATIVE_TO = { "millisecond_relative_to" ,
		"second_relative_to" , "minute_relative_to" , "hour_relative_to" , "day_relative_to" ,
		"week_relative_to" , "month_relative_to" , "quarter_relative_to" , "half_year_relative_to" ,
	"year_relative_to" };

	public static final String[][] RELATIVE_TO_MODES = {
		{ "second" , "epoch" },
		{ "minute" , "hour" , "day" , "epoch" },
		{ "hour" , "day" , "epoch" },
		{ "day" , "epoch" },
		{ "week" , "month" , "year" , "epoch" },
		{ "month" , "year" , "epoch" },
		{ "quarter" , "year" , "epoch" },
		{ "year" , "epoch" },
		{ "year" , "epoch" },
		{ "epoch" , "era" }
	};

	public static final int MILLISECOND_RELATIVE_TO_SECOND = 0;
	public static final int MILLISECOND_RELATIVE_TO_EPOCH = 1;

	public static final int SECOND_RELATIVE_TO_MINUTE = 0;
	public static final int SECOND_RELATIVE_TO_HOUR = 1;
	public static final int SECOND_RELATIVE_TO_DAY = 2;
	public static final int SECOND_RELATIVE_TO_EPOCH = 3;

	public static final int MINUTE_RELATIVE_TO_HOUR = 0;
	public static final int MINUTE_RELATIVE_TO_DAY = 1;
	public static final int MINUTE_RELATIVE_TO_EPOCH = 2;

	public static final int HOUR_RELATIVE_TO_DAY = 0;
	public static final int HOUR_RELATIVE_TO_EPOCH = 1;

	public static final int DAY_RELATIVE_TO_WEEK = 0;
	public static final int DAY_RELATIVE_TO_MONTH = 1;
	public static final int DAY_RELATIVE_TO_YEAR = 2;
	public static final int DAY_RELATIVE_TO_EPOCH = 3;

	public static final int WEEK_RELATIVE_TO_MONTH = 0;
	public static final int WEEK_RELATIVE_TO_YEAR = 1;
	public static final int WEEK_RELATIVE_TO_EPOCH = 2;

	public static final int MONTH_RELATIVE_TO_QUARTER = 0;
	public static final int MONTH_RELATIVE_TO_YEAR = 1;
	public static final int MONTH_RELATIVE_TO_EPOCH = 2;

	public static final int QUARTER_RELATIVE_TO_YEAR = 0;
	public static final int QUARTER_RELATIVE_TO_EPOCH = 1;

	public static final int HALF_YEAR_RELATIVE_TO_YEAR = 0;
	public static final int HALF_YEAR_RELATIVE_TO_EPOCH = 1;

	public static final int YEAR_RELATIVE_TO_EPOCH = 0;
	public static final int YEAR_RELATIVE_TO_ERA = 1;

	public static final int[] RELATIVE_TO_DEFAULTS = { MILLISECOND_RELATIVE_TO_SECOND ,
		SECOND_RELATIVE_TO_MINUTE , MINUTE_RELATIVE_TO_HOUR , HOUR_RELATIVE_TO_DAY ,
		DAY_RELATIVE_TO_MONTH , WEEK_RELATIVE_TO_YEAR , MONTH_RELATIVE_TO_YEAR ,
		QUARTER_RELATIVE_TO_YEAR , HALF_YEAR_RELATIVE_TO_YEAR , YEAR_RELATIVE_TO_ERA
	};

	public static List<Locale> availableLocales = new ArrayList<Locale>();

	public static String[] availableLocaleNames;

	public static int defaultLocale;

	static {
		Locale[] availableLocaleArray = Locale.getAvailableLocales();

		for (Locale l : availableLocaleArray) {
			availableLocales.add(l);
		}

		Collections.sort(availableLocales, new Comparator<Locale> () {
			public int compare(Locale o1, Locale o2) {
				return o1.getDisplayName().compareTo(o2.getDisplayName());
			}
		});

		availableLocaleNames = new String[availableLocales.size()];
		defaultLocale = -1;
		for (int i = 0; i < availableLocales.size(); i++) {
			Locale currentLocale = availableLocales.get(i);
			availableLocaleNames[i] = currentLocale.getDisplayName();
			if (currentLocale.equals(Locale.US)) {
				defaultLocale = i;
			}
		}
		if (defaultLocale < 0)
			defaultLocale = 0;
	}


	public AbstractDateDataProcessing(OperatorDescription description) {
		super(description);

	}
}