oglimmer/lunchy

package de.oglimmer.lunchy.image;

import java.io.File;
import java.io.IOException;

import org.imgscalr.Scalr;

import de.oglimmer.lunchy.services.FileService;
import de.oglimmer.lunchy.services.LunchyProperties;

public class UploadImageScaler {

    private static final int MAX_HEIGHT = 720;
    private static final int MAX_WIDTH = 1200;

    private DiskBasedImageScaler scaler;
    private String filename;
    private File originalFile;

    public UploadImageScaler(String filename) {
        this.filename = filename;
        String fullQualFilename = LunchyProperties.INSTANCE.getPictureDestinationPath() + "/" + filename;
        originalFile = new File(fullQualFilename);
        scaler = new DiskBasedImageScaler(fullQualFilename, MAX_WIDTH, MAX_HEIGHT, Scalr.Method.ULTRA_QUALITY);
    }

    public void moveOriginalFileToBackup() throws IOException {
        String path = LunchyProperties.INSTANCE.getBackupDestinationPath();
        if (path == null) {
            path = LunchyProperties.INSTANCE.getPictureDestinationPath();
        }
        File backupFile = new File(path + "/" + filename + "_original" + FileService.getFileExtension(filename));
        FileService.move(originalFile, backupFile);
    }

    public boolean scale() throws IOException {
        return scaler.scale();
    }

    public void saveToDisk() throws IOException {
        scaler.overwriteToDisk();
    }

}