/*
 * Copyright 2013 Hewlett-Packard Development Company, L.P
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hp.alm.ali.idea.model.type;

import com.hp.alm.ali.idea.filter.FilterFactory;
import com.hp.alm.ali.idea.translate.Translator;
import com.hp.alm.ali.idea.translate.ValueCallback;
import com.hp.alm.ali.idea.translate.filter.FilterResolver;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;

import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
import java.io.IOException;
import java.io.StringReader;

public class PlainTextType implements Type, Translator {

    @Override
    public FilterFactory getFilterFactory(boolean multiple) {
        throw new UnsupportedOperationException();
    }

    @Override
    public FilterResolver getFilterResolver() {
        throw new UnsupportedOperationException();
    }

    @Override
    public Translator getTranslator() {
        return this;
    }

    @Override
    public String translate(String value, ValueCallback callback) {
        try {
            final StringBuffer buf = new StringBuffer();
            new ParserDelegator().parse(new StringReader(value), new HTMLEditorKit.ParserCallback() {
                @Override
                public void handleText(char[] data, int pos) {
                    if(buf.length() > 0 && !StringUtils.isWhitespace(buf.substring(buf.length() - 1))) {
                        buf.append(" ");
                    }
                    buf.append(data);
                }
            }, false);
            return buf.toString();
        } catch (IOException e) {
            return StringEscapeUtils.escapeHtml(value);
        }
    }
}