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package fr.umlv.java.wallj.viewer;
import fr.umlv.java.wallj.board.Board;
import fr.umlv.java.wallj.board.BoardParser;
import fr.umlv.java.wallj.board.BoardValidator;
import fr.umlv.zen5.Application;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
/**
* The main class of the application.
*
* @author Adam NAILI
* @author Pacien TRAN-GIRARD
*/
public final class Main {
private static final String MAP_DIR_KEY = "levels";
private static final String DEFAULT_MAP_DIR = "/maps";
private static final String MAP_FILE_PATTERN = "level*.txt";
private static final String JAR_SCHEME = "jar";
private static Path getMapDirPath() {
try {
if (System.getProperty(MAP_DIR_KEY) != null) {
return Paths.get(System.getProperty(MAP_DIR_KEY));
} else {
URI defaultMapDirUri = Main.class.getResource(DEFAULT_MAP_DIR).toURI();
if (defaultMapDirUri.getScheme().equals(JAR_SCHEME))
FileSystems.newFileSystem(defaultMapDirUri, Collections.emptyMap());
return Paths.get(defaultMapDirUri);
}
} catch (URISyntaxException | IOException e) {
throw new RuntimeException(e);
}
}
private static Stream<Path> listMaps(Path mapDir) {
try {
return StreamSupport
.stream(Files.newDirectoryStream(mapDir, MAP_FILE_PATTERN).spliterator(), false)
.sorted((l, r) -> String.CASE_INSENSITIVE_ORDER.compare(l.toString(), r.toString()));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static Board loadBoard(Path path) {
try {
return BoardParser.parse(path);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static Board validateBoard(Board board) {
try {
return new BoardValidator(board)
.validate(BoardValidator.Constraint::hasActualReachableBlocks, "Some supposed reachable blocks are not reachable.")
.validate(BoardValidator.Constraint::hasMandatoryBlocks, "Some mandatory blocks are missing.")
.validate(BoardValidator.Constraint::isBounded, "The board is not correctly bounded.")
.validate(BoardValidator.Constraint::isHollow, "The board must have a unique and simple interior.")
.get();
} catch (BoardValidator.ValidationException e) {
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
List<Board> levels = listMaps(getMapDirPath())
.map(Main::loadBoard)
.map(Main::validateBoard)
.collect(Collectors.toList());
Viewer viewer = new Viewer(levels);
Application.run(Viewer.BACKGROUND_COLOR, viewer::eventLoop);
}
private Main() {
// static class
}
}
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