001/*
002 *  Copyright 2021 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.plugins.workspaces.project.notification;
017
018import java.util.ArrayList;
019import java.util.Arrays;
020import java.util.List;
021
022import org.apache.commons.lang3.StringUtils;
023
024/**
025 * Helper providing some method to facilitate the creation of HTML mail template
026 */
027public final class NotificationXSLTHelper
028{
029    private NotificationXSLTHelper()
030    {
031        // nothing here
032    }
033    /**
034     * Concatenate two string value of style attribute.
035     * If a value is present in the two string, the value in the second string will be ignored.
036     * 
037     * @param newStyles a string of style attribute value
038     * @param defaultStyles a string of style attribute to override if necessary
039     * @return the concatenation of the two string without double entries
040     */
041    public static String concatStyle(String newStyles, String defaultStyles)
042    {
043        List<String> newStylesArr = new ArrayList<>(Arrays.asList(StringUtils.split(newStyles, ';')));
044        List<String> defaultStylesArr = new ArrayList<>(Arrays.asList(StringUtils.split(defaultStyles, ';')));
045        for (String defaultStyle: defaultStylesArr)
046        {
047            boolean overriden = false;
048            String name = StringUtils.substringBefore(defaultStyle, ':').trim().toLowerCase();
049            for (String newStyle : newStylesArr)
050            {
051                if (name.equals(StringUtils.substringBefore(newStyle, ':').trim().toLowerCase()))
052                {
053                    overriden = true;
054                    break;
055                }
056            }
057            if (!overriden)
058            {
059                newStylesArr.add(defaultStyle);
060            }
061        }
062        return StringUtils.join(newStylesArr, ';');
063    }
064}