/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2017, 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 net.sourceforge.plantuml;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;

import net.sourceforge.plantuml.core.Diagram;
import net.sourceforge.plantuml.preproc.Defines;
import net.sourceforge.plantuml.preproc.FileWithSuffix;

public class SourceFileReader2 implements ISourceFileReader {

	private final File file;
	private final File outputFile;

	private final BlockUmlBuilder builder;
	private FileFormatOption fileFormatOption;

	public SourceFileReader2(Defines defines, final File file, File outputFile, List config, String charset,
			FileFormatOption fileFormatOption) throws IOException {
		this.file = file;
		this.fileFormatOption = fileFormatOption;
		this.outputFile = outputFile;
		if (file.exists() == false) {
			throw new IllegalArgumentException();
		}
		FileSystem.getInstance().setCurrentDir(file.getAbsoluteFile().getParentFile());

		builder = new BlockUmlBuilder(config, charset, defines, getReader(charset), file.getAbsoluteFile()
				.getParentFile(), file.getAbsolutePath());
	}

	public boolean hasError() {
		for (final BlockUml b : builder.getBlockUmls()) {
			if (b.getDiagram() instanceof PSystemError) {
				return true;
			}
		}
		return false;
	}

	public List getGeneratedImages() throws IOException {
		Log.info("Reading file: " + file);

		final List result = new ArrayList();

		for (BlockUml blockUml : builder.getBlockUmls()) {
			final SuggestedFile suggested = SuggestedFile.fromOutputFile(outputFile, fileFormatOption.getFileFormat());

			final Diagram system = blockUml.getDiagram();
			OptionFlags.getInstance().logData(file, system);

			for (FileImageData fdata : PSystemUtils.exportDiagrams(system, suggested, fileFormatOption)) {
				final String desc = "[" + file.getName() + "] " + system.getDescription();
				final GeneratedImage generatedImage = new GeneratedImageImpl(fdata.getFile(), desc, blockUml);
				result.add(generatedImage);
			}

		}

		Log.info("Number of image(s): " + result.size());

		return Collections.unmodifiableList(result);
	}

	private Reader getReader(String charset) throws FileNotFoundException, UnsupportedEncodingException {
		if (charset == null) {
			Log.info("Using default charset");
			return new InputStreamReader(new FileInputStream(file));
		}
		Log.info("Using charset " + charset);
		return new InputStreamReader(new FileInputStream(file), charset);
	}

	public final void setFileFormatOption(FileFormatOption fileFormatOption) {
		this.fileFormatOption = fileFormatOption;
	}

	public final Set getIncludedFiles2() {
		return builder.getIncludedFiles();
	}

	public List getBlocks() {
		return builder.getBlockUmls();
	}

}