package org.simantics.maps.elevation.server;

import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collection;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SingletonTiffTileInterface {

    private static final Logger LOGGER = LoggerFactory.getLogger(SingletonTiffTileInterface.class);

    private static final String TIFS_FOLDER = System.getProperty("tifsFolder");

    private static SingletonTiffTileInterface instance = new SingletonTiffTileInterface();

    private TiffTileInterface tileInterface;

    private SingletonTiffTileInterface() {
        // register spis
        Activator.registerSpis();
        Path tilesFolder = Paths.get("tifsFolder");
        if (TIFS_FOLDER != null) {
            Path potTilesFolder = Paths.get(TIFS_FOLDER);
            if (!Files.exists(potTilesFolder)) {
                // use default from working directory
                tilesFolder = potTilesFolder;
            }
        }
        try {
            Files.createDirectories(tilesFolder);
        } catch (IOException e) {
            LOGGER.error("Could not create directories {}", tilesFolder.toAbsolutePath(), e);
        }
        tileInterface = new TiffTileInterface(tilesFolder);
    }

    public static Number lookup(double x, double y) {
        return instance.tileInterface.lookup(x, y);
    }
    
    public static Collection<Rectangle2D> getBoundingBoxes() {
        return instance.tileInterface.getBoundingBoxes();
    }
}