/**
 * Copyright (c) 2015, Lucee Assosication Switzerland. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package lucee.transformer.util;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;

import lucee.commons.digest.HashUtil;
import lucee.commons.io.IOUtil;
import lucee.commons.lang.ClassUtil;
import lucee.runtime.PageSource;

public class PageSourceCode extends SourceCode {
	
	private final Charset charset;
	private final PageSource ps;

	public PageSourceCode(PageSource ps, Charset charset,boolean writeLog) throws IOException {
		super(toString(ps,charset),writeLog,ps.getDialect());
		this.charset=charset;
		this.ps=ps;
		//this.source=ps.getPhyscalFile().getAbsolutePath();
	}

	public PageSourceCode(PageSource ps,String text, Charset charset,boolean writeLog) {
		super(text,writeLog,ps.getDialect());
		this.charset=charset;
		this.ps=ps;
	}
	


	private static String toString(PageSource ps, Charset charset) throws IOException {
		String content;
		InputStream is=null;
		try {
			is = IOUtil.toBufferedInputStream(ps.getPhyscalFile().getInputStream());
			if(ClassUtil.isBytecode(is))
				throw new AlreadyClassException(ps.getPhyscalFile(),false);
			if(ClassUtil.isEncryptedBytecode(is))
				throw new AlreadyClassException(ps.getPhyscalFile(),true);
			
			content=IOUtil.toString(is,charset);
			
		}
		finally {
			IOUtil.closeEL(is);
		}
		return content;
	}


	public String id() {
		return HashUtil.create64BitHashAsString(getPageSource().getDisplayPath());
	}

	/**
	 * Gibt die Quelle aus dem der CFML Code stammt als File Objekt zurueck, 
	 * falls dies nicht aud einem File stammt wird null zurueck gegeben.
	 * @return source Quelle des CFML Code.
	 */
	public PageSource getPageSource() {
		return ps;
	}
	
	public Charset getCharset() {
		return charset;
	}
}