/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2023, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * http://plantuml.com/patreon (only 1$ per month!)
 * http://plantuml.com/paypal
 * 
 * This file is part of PlantUML.
 *
 * PlantUML 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.
 *
 * PlantUML 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 *
 *
 */
package com.plantuml.wasm;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import net.sourceforge.plantuml.FileFormat;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.SourceStringReader;
import net.sourceforge.plantuml.core.DiagramDescription;

public class Utils {

	public static int convertPng(String pathOut, String text) throws IOException {
		final FileFormatOption format = new FileFormatOption(FileFormat.PNG);
		text = cleanText(text);
		return doTheJob(pathOut, text, format);
	}

	private static String cleanText(String text) {
		if (text.endsWith("\n") == false)
			text = text + "\n";
		if (text.endsWith("@start") == false)
			text = "@startuml\n" + text + "@enduml\n";

		return text;
	}

	private static int doTheJob(String pathOut, String text, final FileFormatOption format)
			throws FileNotFoundException, IOException {
		final SourceStringReader sr = new SourceStringReader(text);
		final FileOutputStream fos = new FileOutputStream(new File(pathOut));
		DiagramDescription description = sr.outputImage(fos, format);
		fos.close();
		if (description.getDescription() != null && description.getDescription().contains("error"))
			return 1;

		return 0;
	}

	public static int convertSvg(String pathOut, String text) throws IOException {
		final FileFormatOption format = new FileFormatOption(FileFormat.SVG);
		text = cleanText(text);
		return doTheJob(pathOut, text, format);
	}

}