dummy lang changes

src/main/java/stirling/software/SPDF/controller/api/other/FakeScanController.java

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+package stirling.software.SPDF.controller.api.other;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import com.itextpdf.io.source.ByteArrayOutputStream;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import stirling.software.SPDF.utils.ProcessExecutor;
+import stirling.software.SPDF.utils.WebResponseUtils;
+//Required for PDF manipulation
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
+import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
+import org.apache.pdfbox.rendering.ImageType;
+import org.apache.pdfbox.rendering.PDFRenderer;
+
+
+//Required for image manipulation
+import java.awt.image.BufferedImage;
+import java.awt.image.BufferedImageOp;
+import java.awt.image.RescaleOp;
+import java.awt.image.AffineTransformOp;
+import java.awt.image.ConvolveOp;
+import java.awt.image.Kernel;
+import java.awt.Color;
+import java.awt.geom.AffineTransform;
+
+//Required for image input/output
+import javax.imageio.ImageIO;
+
+//Required for file input/output
+import java.io.File;
+
+//Other required classes
+import java.util.Random;
+
+import io.swagger.v3.oas.annotations.Hidden;
+
+@RestController
+public class FakeScanController {
+
+    private static final Logger logger = LoggerFactory.getLogger(FakeScanController.class);
+
+    //TODO
+    @Hidden
+    @PostMapping(consumes = "multipart/form-data", value = "/fakeScan")
+    @Operation(
+        summary = "Repair a PDF file",
+        description = "This endpoint repairs a given PDF file by running Ghostscript command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response."
+    )
+    public ResponseEntity<byte[]> repairPdf(
+        @RequestPart(required = true, value = "fileInput")
+        @Parameter(description = "The input PDF file to be repaired", required = true)
+            MultipartFile inputFile) throws IOException, InterruptedException {
+
+    	PDDocument document = PDDocument.load(inputFile.getBytes());
+    	PDFRenderer pdfRenderer = new PDFRenderer(document);
+    	for (int page = 0; page < document.getNumberOfPages(); ++page)
+    	{
+    	    BufferedImage image = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
+    	    ImageIO.write(image, "png", new File("scanned-" + (page+1) + ".png"));
+    	}
+    	document.close();
+
+    	// Constants
+    	int scannedness = 90;  // Value between 0 and 100
+    	int dirtiness = 0;  // Value between 0 and 100
+
+    	// Load the source image
+    	BufferedImage sourceImage = ImageIO.read(new File("scanned-1.png"));
+
+    	// Create the destination image
+    	BufferedImage destinationImage = new BufferedImage(sourceImage.getWidth(), sourceImage.getHeight(), sourceImage.getType());
+
+    	// Apply a brightness and contrast effect based on the "scanned-ness"
+    	float scaleFactor = 1.0f + (scannedness / 100.0f) * 0.5f;  // Between 1.0 and 1.5
+    	float offset = scannedness * 1.5f;  // Between 0 and 150
+    	BufferedImageOp op = new RescaleOp(scaleFactor, offset, null);
+    	op.filter(sourceImage, destinationImage);
+
+    	// Apply a rotation effect
+    	double rotationRequired = Math.toRadians((new Random().nextInt(3 - 1) + 1));  // Random angle between 1 and 3 degrees
+    	double locationX = destinationImage.getWidth() / 2;
+    	double locationY = destinationImage.getHeight() / 2;
+    	AffineTransform tx = AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
+    	AffineTransformOp rotateOp = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
+    	destinationImage = rotateOp.filter(destinationImage, null);
+
+    	// Apply a blur effect based on the "scanned-ness"
+    	float blurIntensity = scannedness / 100.0f * 0.2f;  // Between 0.0 and 0.2
+    	float[] matrix = {
+    	    blurIntensity, blurIntensity, blurIntensity,
+    	    blurIntensity, blurIntensity, blurIntensity,
+    	    blurIntensity, blurIntensity, blurIntensity
+    	};
+    	BufferedImageOp blurOp = new ConvolveOp(new Kernel(3, 3, matrix), ConvolveOp.EDGE_NO_OP, null);
+    	destinationImage = blurOp.filter(destinationImage, null);
+
+    	// Add noise to the image based on the "dirtiness"
+    	Random random = new Random();
+    	for (int y = 0; y < destinationImage.getHeight(); y++) {
+    	    for (int x = 0; x < destinationImage.getWidth(); x++) {
+    	        if (random.nextInt(100) < dirtiness) {
+    	            // Change the pixel color to black randomly based on the "dirtiness"
+    	            destinationImage.setRGB(x, y, Color.BLACK.getRGB());
+    	        }
+    	    }
+    	}
+
+    	// Save the image
+    	ImageIO.write(destinationImage, "PNG", new File("scanned-1.png"));
+
+
+    	
+    	
+    	
+    	
+
+    	PDDocument documentOut = new PDDocument();
+    	for (int page = 1; page <= document.getNumberOfPages(); ++page)
+    	{
+    	    BufferedImage bim = ImageIO.read(new File("scanned-" + page + ".png"));
+    	    
+    	    // Adjust the dimensions of the page
+    	    PDPage pdPage = new PDPage(new PDRectangle(bim.getWidth() - 1, bim.getHeight() - 1));
+    	    documentOut.addPage(pdPage);
+    	    
+    	    PDImageXObject pdImage = LosslessFactory.createFromImage(documentOut, bim);
+    	    PDPageContentStream contentStream = new PDPageContentStream(documentOut, pdPage);
+    	    
+    	    // Draw the image with a slight offset and enlarged dimensions
+    	    contentStream.drawImage(pdImage, -1, -1, bim.getWidth() + 2, bim.getHeight() + 2);
+    	    contentStream.close();
+    	}
+    	ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    	documentOut.save(baos);
+    	documentOut.close();
+
+        // Return the optimized PDF as a response
+        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scanned.pdf";
+        return WebResponseUtils.boasToWebResponse(baos, outputFilename);
+    }
+
+}