/************************************************************************
 *
 *  LaTeXDocument.java
 *
 *  Copyright: 2002-2015 by Henrik Just
 *
 *  This file is part of Writer2LaTeX.
 *  
 *  Writer2LaTeX is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  
 *  Writer2LaTeX 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 General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with Writer2LaTeX.  If not, see <http://www.gnu.org/licenses/>.
 * 
 *  Version 1.6 (2015-05-05)
 *
 */

package writer2latex.latex;

import writer2latex.api.MIMETypes;
import writer2latex.api.OutputFile;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

/**
 * <p>Class representing a LaTeX document.</p>
 *
 */
public class LaTeXDocument implements OutputFile {
    private static final String FILE_EXTENSION = ".tex";
	
    private String sName;
    
    private boolean bIsMaster;
	
    private String sEncoding = "ASCII";
	
    private int nWrap;
    
    private LaTeXDocumentPortion contents;
    
    /**
     * <p>Constructs a new LaTeX Document.</p>
     *
     * <p>This new document is empty.  Document data must added to the preamble and
     *    the body using appropriate methods.</p>
     *
     * @param   sName   The name of the <code>LaTeXDocument</code>.
     * @param   nWrap   Lines should be wrapped after this position
     * @param   bIsMaster true if this is a master document
     */
    public LaTeXDocument(String sName,int nWrap,boolean bIsMaster) {
        this.nWrap = nWrap;
        this.sName = trimDocumentName(sName);
        this.bIsMaster = bIsMaster;
        contents = new LaTeXDocumentPortion(true);
    }
    
    /**
     * <p>Returns the <code>Document</code> name with no file extension.</p>
     *
     * @return  The <code>Document</code> name with no file extension.
     */
    public String getName() {
        return sName;
    }
    
    
    /**
     * <p>Returns the <code>Document</code> name with file extension.</p>
     *
     * @return  The <code>Document</code> name with file extension.
     */
    public String getFileName() {
        return new String(sName + FILE_EXTENSION);
    }
    
	public String getMIMEType() {
		return MIMETypes.LATEX;
	}
	
	public boolean isMasterDocument() {
		return bIsMaster;
	}
	
	public boolean containsMath() {
		// We don't use this information currently
		return true;
	}

    /**
     * <p>Writes out the <code>Document</code> content to the specified
     * <code>OutputStream</code>.</p>
     *
     * <p>This method may not be thread-safe.
     * Implementations may or may not synchronize this
     * method.  User code (i.e. caller) must make sure that
     * calls to this method are thread-safe.</p>
     *
     * @param  os  <code>OutputStream</code> to write out the
     *             <code>Document</code> content.
     *
     * @throws  IOException  If any I/O error occurs.
     */
    public void write(OutputStream os) throws IOException {
        OutputStreamWriter osw = new OutputStreamWriter(os,sEncoding);
        contents.write(osw,nWrap,"\n");
        osw.flush();
        osw.close();
    }
    
    /**
     * <p> Set the output encoding to use when writing the document.</p>
     */
    public void setEncoding(String sEncoding) { this.sEncoding = sEncoding; }

    /**
     * <p>Returns the <code>LaTeXDocumentPortion</code>, that contains the
     * contents of the document.</p>
     *
     * @return  The content <code>LaTeXDocumentPortion</code>.
     */
    public LaTeXDocumentPortion getContents(){
        return contents;
    }

    /*
     * Utility method to make sure the document name is stripped of any file
     * extensions before use.
     */
    private String trimDocumentName(String name) {
        String temp = name.toLowerCase();
        
        if (temp.endsWith(FILE_EXTENSION)) {
            // strip the extension
            int nlen = name.length();
            int endIndex = nlen - FILE_EXTENSION.length();
            name = name.substring(0,endIndex);
        }

        return name;
    }

}