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/*
* Copyright (C) 2008-2020, Juick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.service;
import com.juick.model.Attachment;
import com.juick.model.Message;
import com.juick.model.Photo;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.Imaging;
import org.apache.commons.imaging.common.ImageMetadata;
import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
import org.apache.commons.imaging.formats.tiff.TiffField;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import org.imgscalr.Scalr;
import org.imgscalr.Scalr.Rotation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.ResourceUtils;
import org.springframework.util.StringUtils;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
public class ImagesServiceImpl implements ImagesService {
private static final Logger logger = LoggerFactory.getLogger(ImagesService.class);
private final String imgDir;
private final String tmpDir;
public ImagesServiceImpl(String imgDir, String tmpDir) {
this.imgDir = imgDir;
this.tmpDir = tmpDir;
}
@Override
public void setAttachmentMetadata(String baseUrl, Message msg) throws Exception {
if (!StringUtils.isEmpty(msg.getAttachmentType())) {
Photo photo = new Photo();
if (msg.getRid() > 0) {
photo.setSmall(String.format("%sphotos-512/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(),
msg.getAttachmentType()));
photo.setMedium(String.format("%sphotos-1024/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(),
msg.getAttachmentType()));
photo.setThumbnail(
String.format("%sps/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(), msg.getAttachmentType()));
} else {
photo.setSmall(String.format("%sphotos-512/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
photo.setMedium(String.format("%sphotos-1024/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
photo.setThumbnail(String.format("%sps/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
}
msg.setPhoto(photo);
String imageName = String.format("%s.%s", msg.getMid(), msg.getAttachmentType());
if (msg.getRid() > 0) {
imageName = String.format("%s-%s.%s", msg.getMid(), msg.getRid(), msg.getAttachmentType());
}
File fullImage = Paths.get(imgDir, "p", imageName).toFile();
File mediumImage = Paths.get(imgDir, "photos-1024", imageName).toFile();
File smallImage = Paths.get(imgDir, "photos-512", imageName).toFile();
File thumbnailImage = Paths.get(imgDir, "ps", imageName).toFile();
StringBuilder builder = new StringBuilder();
builder.append(baseUrl);
builder.append(msg.getAttachmentType().equals("mp4") ? "video" : "p");
builder.append("/").append(msg.getMid());
if (msg.getRid() > 0) {
builder.append("-").append(msg.getRid());
}
builder.append(".").append(msg.getAttachmentType());
String originalUrl = builder.toString();
Attachment original = getAttachment(fullImage);
original.setUrl(originalUrl);
Attachment medium = getAttachment(mediumImage);
medium.setUrl(photo.getMedium());
original.setMedium(medium);
Attachment small = getAttachment(smallImage);
small.setUrl(photo.getSmall());
original.setSmall(small);
Attachment thumb = getAttachment(thumbnailImage);
thumb.setUrl(photo.getMedium());
original.setThumbnail(thumb);
msg.setAttachment(original);
}
}
@Override
public Attachment getImageMetadata(String resourceLocation) throws FileNotFoundException, IOException {
return getAttachment(ResourceUtils.getFile(resourceLocation));
}
/**
* Returns <code>BufferedImage</code>, same as <code>ImageIO.read()</code> does.
*
* <p>
* JPEG images with EXIF metadata are rotated according to Orientation tag.
*
* @param imageFile a <code>File</code> to read from.
*/
private static BufferedImage readImageWithOrientation(File imageFile) throws IOException {
BufferedImage image = ImageIO.read(imageFile);
if (!FilenameUtils.getExtension(imageFile.getName()).equals("jpg")) {
return image;
}
try {
ImageMetadata metadata = Imaging.getMetadata(imageFile);
if (metadata instanceof JpegImageMetadata) {
JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
TiffField orientationField = jpegMetadata.findEXIFValue(TiffTagConstants.TIFF_TAG_ORIENTATION);
if (orientationField != null) {
int orientation = orientationField.getIntValue();
switch (orientation) {
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_90_CW:
image = Scalr.rotate(image, Rotation.CW_90);
break;
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_180:
image = Scalr.rotate(image, Rotation.CW_180);
break;
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_270_CW:
image = Scalr.rotate(image, Rotation.CW_270);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL:
image = Scalr.rotate(image, Rotation.FLIP_HORZ);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_VERTICAL:
image = Scalr.rotate(image, Rotation.FLIP_VERT);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_90_CW:
image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_90);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_270_CW:
image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_270);
break;
case TiffTagConstants.ORIENTATION_VALUE_HORIZONTAL_NORMAL:
default:
// do nothing
break;
}
}
}
} catch (ImageReadException | IOException e) {
// failed to read metadata.
// nothing to do here, return image as is.
}
return image;
}
@Override
public void saveImageWithPreviews(String tempFilename, String outputFilename) throws IOException {
String ext = FilenameUtils.getExtension(outputFilename);
Path outputImagePath = Paths.get(imgDir, "p", outputFilename);
// this throws strange exceptions
// Files.move(Paths.get(tmpDir, tempFilename), outputImagePath);
FileUtils.moveFile(Paths.get(tmpDir, tempFilename).toFile(), outputImagePath.toFile());
BufferedImage originalImage = readImageWithOrientation(outputImagePath.toFile());
int width = originalImage.getWidth();
int height = originalImage.getHeight();
int maxDimension = Math.max(width, height);
BufferedImage image1024 = (maxDimension > 1024) ? Scalr.resize(originalImage, 1024) : originalImage;
BufferedImage image0512 = (maxDimension > 512) ? Scalr.resize(originalImage, 512) : originalImage;
BufferedImage image0160 = (maxDimension > 160) ? Scalr.resize(originalImage, 160) : originalImage;
ImageIO.write(image1024, ext, Paths.get(imgDir, "photos-1024", outputFilename).toFile());
ImageIO.write(image0512, ext, Paths.get(imgDir, "photos-512", outputFilename).toFile());
ImageIO.write(image0160, ext, Paths.get(imgDir, "ps", outputFilename).toFile());
}
public void saveAvatar(String tempFilename, int uid) throws IOException {
String ext = FilenameUtils.getExtension(tempFilename);
String originalName = String.format("%s.%s", uid, ext);
Path originalPath = Paths.get(imgDir, "ao", originalName);
Files.move(Paths.get(tmpDir, tempFilename), originalPath, StandardCopyOption.REPLACE_EXISTING);
BufferedImage originalImage = ImageIO.read(originalPath.toFile());
String targetExt = "png";
String targetName = String.format("%s.%s", uid, targetExt);
ImageIO.write(Scalr.resize(originalImage, 96), targetExt, Paths.get(imgDir, "a", targetName).toFile());
ImageIO.write(Scalr.resize(originalImage, 32), targetExt, Paths.get(imgDir, "as", targetName).toFile());
}
public Attachment getAttachment(File imgFile) throws IOException {
Attachment attachment = new Attachment();
if (imgFile.exists()) {
try (ImageInputStream stream = ImageIO.createImageInputStream(imgFile)) {
Iterator<ImageReader> iter = ImageIO.getImageReaders(stream);
while (iter.hasNext()) {
ImageReader reader = iter.next();
try {
reader.setInput(stream);
attachment.setWidth(reader.getWidth(reader.getMinIndex()));
attachment.setHeight(reader.getHeight(reader.getMinIndex()));
return attachment;
} catch (Exception e) {
logger.debug("Error reading {}, trying next reader", imgFile.getAbsolutePath());
} finally {
reader.dispose();
}
}
}
} else {
logger.warn("File not exists yet: {}", imgFile.getAbsolutePath());
return attachment;
}
logger.warn("Not a known image file {}", imgFile.getAbsolutePath());
return attachment;
}
@Override
public String getImageDirectory() {
return imgDir;
}
@Override
public String getTemporaryDirectory() {
return tmpDir;
}
}
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