backup

Rev1/node/routes/invoice_sign.js

@@ -1,26 +1,79 @@
 const express = require("express");
 const router = express.Router();
 const fs = require("fs");
+const path = require("path");
 
 const lastFilesDir = "./public/upload/converted/";
-
+const rawDir = "./public/upload/raw/";
 const renderPageName = "invoice_sign";
 
+const getMostRecentFile = (dir) => {
+  const files = orderReccentFiles(dir);
+  return files.length ? files[0] : undefined;
+};
+
+const orderReccentFiles = (dir) => {
+  return fs
+    .readdirSync(dir)
+    .filter((file) => fs.lstatSync(path.join(dir, file)).isFile())
+    .map((file) => ({ file, mtime: fs.lstatSync(path.join(dir, file)).mtime }))
+    .sort((a, b) => b.mtime.getTime() - a.mtime.getTime());
+};
+
+const { PDFDocument } = require("pdf-lib");
+
+const signDir = "./public/img/imza.png";
+const signPDF = async (sourceFile) => {
+  // Fetch PNG image
+  const pngUrl = signDir;
+  const pngImageBytes = fs.readFileSync(signDir);
+  const pBytes = fs.readFileSync(rawDir + sourceFile);
+  const pdfDoc = await PDFDocument.load(pBytes);
+
+  // Embed the JPG image bytes and PNG image bytes
+  const pngImage = await pdfDoc.embedPng(pngImageBytes);
+
+  // Get the width/height of the PNG image scaled down to 50% of its original size
+  const pngDims = pngImage.scale(0.1);
+
+  // Add a blank page to the document
+  const pages = pdfDoc.getPages();
+
+  // Draw the PNG image near the lower right corner of the JPG image
+  page = pages[0];
+  page.drawImage(pngImage, {
+    x: page.getWidth() / 2 - pngDims.width / 2 + 75,
+    y: page.getHeight() / 2 - pngDims.height,
+    width: pngDims.width,
+    height: pngDims.height,
+  });
+
+  // Serialize the PDFDocument to bytes (a Uint8Array)
+  const pdfBytes = await pdfDoc.save();
+  fs.writeFileSync(lastFilesDir + sourceFile, await pdfDoc.save());
+  return pdfBytes;
+};
+
 // load the page
 router.get("/", function (req, res) {
   let lastFiles = [];
   if (!fs.existsSync(lastFilesDir)) {
     fs.mkdirSync(lastFilesDir);
   }
-  const dir = fs.opendirSync(lastFilesDir);
-  let entity;
-  while ((entity = dir.readSync()) !== null) {
-    if (entity.isFile()) {
-      lastFiles.push({ type: "f", name: entity.name });
-    } else if (entity.isDirectory()) {
-      lastFiles.push({ type: "d", name: entity.name });
+  // const dir = fs.opendirSync(lastFilesDir);
+  let filesOrdered = orderReccentFiles(lastFilesDir);
+
+  if (filesOrdered.length > 5) {
+    for (let index = 5; index < filesOrdered.length; index++) {
+      filePath = lastFilesDir + filesOrdered[index].file;
+      fs.unlinkSync(filePath);
     }
   }
+  filesOrdered = orderReccentFiles(lastFilesDir);
+  for (file of filesOrdered) {
+    lastFiles.push({ type: "f", name: file.file });
+  }
+  // lastFiles.push({ type: "f", name: getMostRecentFile(lastFilesDir).file });
   res.render(renderPageName, { lastFiles });
 });
 //Post the upload file
@@ -35,7 +88,7 @@ router.post("/", function (req, res) {
     console.log(uploadedFile);
 
     // Upload path
-    const uploadPath = lastFilesDir;
+    const uploadPath = rawDir;
     if (!fs.existsSync(uploadPath)) {
       fs.mkdirSync(uploadPath);
     }
@@ -44,20 +97,18 @@ router.post("/", function (req, res) {
       if (err) {
         console.log(err);
         res.send("Failed !!");
-      } else res.send("Successfully Uploaded !!");
+      }
+      // res.send("Successfully Uploaded !!");
+      else {
+        signPDF(uploadedFile.name);
+        res.redirect(renderPageName);
+      }
     });
   } else res.send("No file uploaded !!");
 });
 
 // To handle the download file request
 router.get("/download", function (req, res) {
-  // The res.download() talking file path to be downloaded
-  // console.log(req);
-  // res.download(__dirname + "/uploads/fax.odg", function (err) {
-  //   if (err) {
-  //     console.log(err);
-  //   }
-  // });
   const downloadFile = lastFilesDir + req.query.downloadFile;
   console.log(downloadFile);
   res.download(downloadFile, function (err) {});