lots of stuff and garbage code for automate to cleanup lots

src/main/java/stirling/software/SPDF/SPdfApplication.java

@@ -15,7 +15,7 @@
 import stirling.software.SPDF.utils.GeneralUtils;
 
 @SpringBootApplication
-//@EnableScheduling
+@EnableScheduling
 public class SPdfApplication {
 
 	@Autowired

src/main/java/stirling/software/SPDF/controller/api/CropController.java

@@ -0,0 +1,132 @@
+package stirling.software.SPDF.controller.api;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import stirling.software.SPDF.utils.GeneralUtils;
+import stirling.software.SPDF.utils.WebResponseUtils;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import com.itextpdf.kernel.geom.PageSize;
+import com.itextpdf.kernel.geom.Rectangle;
+import com.itextpdf.kernel.pdf.PdfDocument;
+import com.itextpdf.kernel.pdf.PdfPage;
+import com.itextpdf.kernel.pdf.PdfReader;
+import com.itextpdf.kernel.pdf.PdfWriter;
+import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
+import com.itextpdf.kernel.pdf.canvas.parser.EventType;
+import com.itextpdf.kernel.pdf.canvas.parser.PdfCanvasProcessor;
+import com.itextpdf.kernel.pdf.canvas.parser.data.IEventData;
+import com.itextpdf.kernel.pdf.canvas.parser.data.TextRenderInfo;
+import com.itextpdf.kernel.pdf.canvas.parser.listener.IEventListener;
+import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
+
+import io.swagger.v3.oas.annotations.Hidden;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@Tag(name = "General", description = "General APIs")
+public class CropController {
+
+    private static final Logger logger = LoggerFactory.getLogger(CropController.class);
+
+
+	@PostMapping(value = "/crop", consumes = "multipart/form-data")
+	@Operation(summary = "Crops a PDF document", description = "This operation takes an input PDF file and crops it according to the given coordinates. Input:PDF Output:PDF Type:SISO")
+	public ResponseEntity<byte[]> cropPdf(
+	        @Parameter(description = "The input PDF file", required = true) @RequestParam("file") MultipartFile file,
+	        @Parameter(description = "The x-coordinate of the top-left corner of the crop area", required = true, schema = @Schema(type = "number")) @RequestParam("x") float x,
+	        @Parameter(description = "The y-coordinate of the top-left corner of the crop area", required = true, schema = @Schema(type = "number")) @RequestParam("y") float y,
+	        @Parameter(description = "The width of the crop area", required = true, schema = @Schema(type = "number")) @RequestParam("width") float width,
+	        @Parameter(description = "The height of the crop area", required = true, schema = @Schema(type = "number")) @RequestParam("height") float height) throws IOException {
+	    byte[] bytes = file.getBytes();
+	    System.out.println("x=" + x + ", " + "y=" + y + ", " + "width=" + width + ", " +"height=" + height  );
+	    PdfReader reader = new PdfReader(new ByteArrayInputStream(bytes));
+	    PdfDocument pdfDoc = new PdfDocument(reader);
+
+	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+	    PdfWriter writer = new PdfWriter(baos);
+	    PdfDocument outputPdf = new PdfDocument(writer);
+
+	    int totalPages = pdfDoc.getNumberOfPages();
+
+	    for (int i = 1; i <= totalPages; i++) {
+	        PdfPage page = outputPdf.addNewPage(new PageSize(width, height));
+	        PdfCanvas pdfCanvas = new PdfCanvas(page);
+
+	        PdfFormXObject formXObject = pdfDoc.getPage(i).copyAsFormXObject(outputPdf);
+
+	        // Save the graphics state, apply the transformations, add the object, and then
+	        // restore the graphics state
+	        pdfCanvas.saveState();
+	        pdfCanvas.rectangle(x, y, width, height);
+	        pdfCanvas.clip();
+	        pdfCanvas.addXObject(formXObject, -x, -y);
+	        pdfCanvas.restoreState();
+	    }
+
+
+	    outputPdf.close();
+		byte[] pdfContent = baos.toByteArray();
+		pdfDoc.close();
+		return WebResponseUtils.bytesToWebResponse(pdfContent,
+				file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_cropped.pdf");
+	}
+
+}

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

@@ -114,9 +114,9 @@ public ResponseEntity<byte[]> addPageNumbers(
         for (int i : pagesToNumberList) {
             PdfPage page = pdfDoc.getPage(i+1);
             Rectangle pageSize = page.getPageSize();
-            PdfCanvas pdfCanvas = new PdfCanvas(page.newContentStreamBefore(), page.getResources(), pdfDoc);
+            PdfCanvas pdfCanvas = new PdfCanvas(page.newContentStreamAfter(), page.getResources(), pdfDoc);
 
-            String text = customText != null ? customText.replace("{n}", String.valueOf(pageNumber)).replace("{p}", String.valueOf(pdfDoc.getNumberOfPages())) : String.valueOf(pageNumber);
+            String text = customText != null ? customText.replace("{n}", String.valueOf(pageNumber)).replace("{total}", String.valueOf(pdfDoc.getNumberOfPages())) : String.valueOf(pageNumber);
 
             PdfFont font = PdfFontFactory.createFont(StandardFonts.HELVETICA);
             float textWidth = font.getWidth(text, fontSize);