/*
 * Copyright (c) 2007-2009, Osmorc Development Team
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright notice, this list
 *       of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this
 *       list of conditions and the following disclaimer in the documentation and/or other
 *       materials provided with the distribution.
 *     * Neither the name of 'Osmorc Development Team' nor the names of its contributors may be
 *       used to endorse or promote products derived from this software without specific
 *       prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.osmorc.manifest.lang.psi.impl;

import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.psi.stubs.IStubElementType;
import com.intellij.openapi.components.ServiceManager;
import org.jetbrains.annotations.NotNull;
import org.osmorc.manifest.lang.ManifestTokenType;
import org.osmorc.manifest.lang.headerparser.HeaderParserRepository;
import org.osmorc.manifest.lang.headerparser.HeaderParser;
import org.osmorc.manifest.lang.psi.HeaderValuePart;
import org.osmorc.manifest.lang.psi.ManifestToken;
import org.osmorc.manifest.lang.psi.stub.HeaderValuePartStub;

/**
 * @author Robert F. Beeger (robert@beeger.net)
 */
public class HeaderValuePartImpl extends ManifestElementBase<HeaderValuePartStub> implements HeaderValuePart {
    private final HeaderParserRepository headerParserRepository;

    public HeaderValuePartImpl(HeaderValuePartStub stub, @NotNull IStubElementType nodeType) {
        super(stub, nodeType);
        headerParserRepository = ServiceManager.getService(HeaderParserRepository.class);
    }

    public HeaderValuePartImpl(ASTNode node) {
        super(node);
        headerParserRepository = ServiceManager.getService(HeaderParserRepository.class);
    }


    public String getUnwrappedText() {
        String result;
        HeaderValuePartStub stub = getStub();
        if (stub != null) {
            result = stub.getUnwrappedText();
        } else {
            StringBuilder builder = new StringBuilder();
            PsiElement element = getFirstChild();
            while (element != null) {
                boolean ignore = false;
                if (element instanceof ManifestToken) {
                    ManifestToken manifestToken = (ManifestToken) element;
                    if (manifestToken.getTokenType() == ManifestTokenType.NEWLINE ||
                            manifestToken.getTokenType() == ManifestTokenType.SIGNIFICANT_SPACE) {
                        ignore = true;
                    }
                }
                if (!ignore) {
                    builder.append(element.getText());
                }
                element = element.getNextSibling();
            }
            
            result = builder.toString();
        }
        return result.trim();
    }

    public Object getConvertedValue() {
        HeaderParser headerParser = headerParserRepository.getHeaderParser(this);
        if (headerParser != null) {
            return headerParser.getValue(this);
        }
        return null;
    }

    @NotNull
    @Override
    public PsiReference[] getReferences() {
        HeaderParser headerParser = headerParserRepository.getHeaderParser(this);
        if (headerParser != null) {
            return headerParser.getReferences(this);
        }
        return PsiReference.EMPTY_ARRAY;
    }
}