/*
 * Copyright (C) 2020 Christian Pierre MOMON <christian.momon@devinsy.fr>
 * 
 * This file is part of AgirStatool, simple key value database.
 * 
 * AgirStatool 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.
 * 
 * AgirStatool 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 AgirStatool.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.april.agirstatool.core;

import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.util.Date;

import org.apache.commons.lang3.math.NumberUtils;

import fr.devinsy.strings.StringList;
import fr.devinsy.strings.StringsUtils;

/**
 * The Class AgirStatoolUtils.
 */
public class AgirStatoolUtils
{
	public static final DateTimeFormatter PATTERN_SHORTDATE = DateTimeFormatter.ofPattern("dd/MM/yyyy");
	public static final DateTimeFormatter PATTERN_LONGDATE = DateTimeFormatter.ofPattern("dd/MM/yyyy hh'h'mm");

	/**
	 * Gets the current time in long format.
	 * 
	 * @return the long
	 */
	public static long now()
	{
		return new Date().getTime();
	}

	/**
	 * Select stat indicator.
	 *
	 * @param value
	 *            the value
	 * @return the string
	 */
	public static String selectStatIndicator(final long value)
	{
		String result;

		if (value < 10)
		{
			result = null;
		}
		else if (value < 20)
		{
			result = "caution";
		}
		else if (value < 50)
		{
			result = "warning";
		}
		else
		{
			result = "alert";
		}

		//
		return result;
	}

	/**
	 * Select unassigned indicator.
	 *
	 * @param value
	 *            the value
	 * @return the string
	 */
	public static String selectUnassignedIndicator(final long value)
	{
		String result;

		if (value == 0)
		{
			result = null;
		}
		else
		{
			result = "alert";
		}

		//
		return result;
	}

	/**
	 * To human long.
	 *
	 * @param value
	 *            the value
	 * @return the string
	 */
	public static String toHumanLong(final LocalDateTime value)
	{
		String result;

		result = toHumanLong(value, null);

		//
		return result;
	}

	/**
	 * To human long.
	 *
	 * @param value
	 *            the value
	 * @param defaultValue
	 *            the default value
	 * @return the string
	 */
	public static String toHumanLong(final LocalDateTime value, final String defaultValue)
	{
		String result;

		if (value == null)
		{
			result = null;
		}
		else
		{
			result = value.format(PATTERN_LONGDATE);
		}

		//
		return result;
	}

	/**
	 * To human short.
	 *
	 * @param value
	 *            the value
	 * @return the string
	 */
	public static String toHumanShort(final LocalDateTime value)
	{
		String result;

		result = toHumanShort(value, null);

		//
		return result;
	}

	/**
	 * @param value
	 * @param defaultValue
	 * @return
	 */
	public static String toHumanShort(final LocalDateTime value, final String defaultValue)
	{
		String result;

		if (value == null)
		{
			result = null;
		}
		else
		{
			result = value.format(PATTERN_SHORTDATE);
		}

		//
		return result;
	}

	public static Integer toInteger(final String value)
	{
		Integer result;

		if ((value == null) || (!NumberUtils.isDigits(value)))
		{
			result = null;
		}
		else
		{
			result = Integer.parseInt(value);
		}

		//
		return result;
	}

	/**
	 * To Json numbers.
	 *
	 * @param source
	 *            the source
	 * @return the string
	 */
	public static String toJSonNumbers(final StringList source)
	{
		String result;

		result = StringsUtils.toString(source, "[", ",", "]");

		//
		return result;
	}

	/**
	 * To Json strings.
	 *
	 * @param source
	 *            the source
	 * @return the string
	 */
	public static String toJSonStrings(final StringList source)
	{
		String result;

		StringList target = new StringList();

		target.append("[");
		for (String string : source)
		{
			target.append("'");
			target.append(string);
			target.append("'");
			target.append(",");
		}
		target.removeLast();
		target.append("]");

		result = target.toString();

		//
		return result;
	}

	/**
	 * To date time.
	 *
	 * @param source
	 *            the source
	 * @return the local date time
	 */
	public static LocalDateTime toLocaleDateTime(final java.sql.Timestamp source)
	{
		LocalDateTime result;

		if (source == null)
		{
			result = null;
		}
		else
		{
			result = LocalDateTime.ofEpochSecond(source.getTime() / 1000, 0, ZoneOffset.UTC);
		}

		//
		return result;
	}
}