Merge pull request #6 from andreysaf/adding-html-conversion

Added HTML conversion

Author: Andrey Safonov

.gitignore

@@ -1,2 +1,3 @@
 # node-modules
-node_modules/
+node_modules/
+pdfnet-node

README.md

@@ -54,6 +54,17 @@ The endpoint converts the file to a PDF. Conversion is possible for the followin
 ##### HTTP Request
 `GET http://localhost:9000/convert/:filename`
 
+### Convert to PDF from HTML
+
+The endpoint converts the HTML to a PDF. There are several settings available to get the best results. Uses [PDFTron Node.js API for HTML2PDF](https://www.pdftron.com/documentation/samples/node/js/HTML2PDFTest?platforms=nodejs).
+
+##### HTTP Request
+`GET http://localhost:9000/convertHTML/:filename-:pathToHTML`
+
+##### Example
+Converts an HTML form to a PDF
+`http://localhost:9000/convertHTML/myhtml-index.html`
+
 ### Optimize PDF
 
 The endpoint converts the PDF to an optimized PDF to be used with [PDFTron WebViewer](https://www.pdftron.com/webviewer/demo/). Uses [PDFTron Node.js API](https://www.pdftron.com/api/pdfnet-node/PDFNet.PDFDoc.html#saveViewerOptimized__anchor).

app.js

@@ -1,8 +1,10 @@
 const express = require('express');
 const fs = require('fs');
 const path = require('path');
+
 const { PDFNet } = require('@pdftron/pdfnet-node');
 const mimeType = require('./modules/mimeType');
+
 const filesPath = './files';
 
 const app = express();
@@ -111,10 +113,36 @@ app.get('/convert/:filename', (req, res) => {
     const pdfdoc = await PDFNet.PDFDoc.create();
     await pdfdoc.initSecurityHandler();
     await PDFNet.Convert.toPdf(pdfdoc, inputPath);
-    pdfdoc.save(
-      outputPath,
-      PDFNet.SDFDoc.SaveOptions.e_linearized,
-    );
+    pdfdoc.save(outputPath, PDFNet.SDFDoc.SaveOptions.e_linearized);
+  };
+
+  PDFNetEndpoint(main, outputPath, res);
+});
+
+app.get('/convertHTML/:filename-:htmlPath', (req, res) => {
+  const filename = req.params.filename;
+  const htmlPath = req.params.htmlPath;
+
+  const inputPath = path.resolve(__dirname, filesPath, htmlPath);
+  const outputPath = path.resolve(__dirname, filesPath, `${filename}.pdf`);
+
+  const main = async () => {
+    try {
+      await PDFNet.HTML2PDF.setModulePath(
+        path.resolve(__dirname, './node_modules/@pdftron/pdfnet-node/lib/'),
+      );
+      const settings = await PDFNet.HTML2PDF.WebPageSettings.create();
+      settings.setAllowJavaScript(true);
+      settings.setProduceForms(true);
+      const html2pdf = await PDFNet.HTML2PDF.create();
+      const pdfdoc = await PDFNet.PDFDoc.create();
+      await html2pdf.insertFromUrl2(inputPath, settings);
+      await html2pdf.convert(pdfdoc);
+      await pdfdoc.save(outputPath, PDFNet.SDFDoc.SaveOptions.e_linearized);
+    } catch (err) {
+      console.log(err);
+    }
+    
   };
 
   PDFNetEndpoint(main, outputPath, res);
@@ -129,10 +157,7 @@ app.get('/generate/:filename', (req, res) => {
     await pdfdoc.initSecurityHandler();
     const page1 = await pdfdoc.pageCreate();
     pdfdoc.pagePushBack(page1);
-    pdfdoc.save(
-      outputPath,
-      PDFNet.SDFDoc.SaveOptions.e_linearized,
-    );
+    pdfdoc.save(outputPath, PDFNet.SDFDoc.SaveOptions.e_linearized);
   };
 
   PDFNetEndpoint(main, outputPath, res);
@@ -149,7 +174,11 @@ app.get('/textExtract/:filename-:pagenumber', (req, res) => {
   }
 
   const inputPath = path.resolve(__dirname, filesPath, filename);
-  const outputPath = path.resolve(__dirname, filesPath, `${filename}-${pageNumber}.txt`);
+  const outputPath = path.resolve(
+    __dirname,
+    filesPath,
+    `${filename}-${pageNumber}.txt`,
+  );
 
   const main = async () => {
     await PDFNet.initialize();
@@ -168,7 +197,7 @@ app.get('/textExtract/:filename-:pagenumber', (req, res) => {
       let text;
 
       text = await txt.getAsText();
-      fs.writeFile(outputPath, text, (err) => {
+      fs.writeFile(outputPath, text, err => {
         if (err) return console.log(err);
       });
     } catch (err) {
@@ -181,10 +210,14 @@ app.get('/textExtract/:filename-:pagenumber', (req, res) => {
 
 app.get('/replaceContent/:name', (req, res) => {
   const name = req.params.name.replace('_', ' ');
-  const filename = 'template_letter.pdf'
+  const filename = 'template_letter.pdf';
 
   const inputPath = path.resolve(__dirname, filesPath, filename);
-  const outputPath = path.resolve(__dirname, filesPath, `${filename}_replaced.pdf`);
+  const outputPath = path.resolve(
+    __dirname,
+    filesPath,
+    `${filename}_replaced.pdf`,
+  );
 
   const main = async () => {
     const pdfdoc = await PDFNet.PDFDoc.createFromFilePath(inputPath);
@@ -197,10 +230,7 @@ app.get('/replaceContent/:name', (req, res) => {
     await replacer.addString('DATE', new Date(Date.now()).toLocaleString());
     await replacer.process(page);
 
-    pdfdoc.save(
-      outputPath,
-      PDFNet.SDFDoc.SaveOptions.e_linearized,
-    );
+    pdfdoc.save(outputPath, PDFNet.SDFDoc.SaveOptions.e_linearized);
   };
 
   PDFNetEndpoint(main, outputPath, res);
@@ -217,7 +247,11 @@ app.get('/watermark/:filename-:watermark', (req, res) => {
   }
 
   const inputPath = path.resolve(__dirname, filesPath, filename);
-  const outputPath = path.resolve(__dirname, filesPath, `${filename}_watermarked.pdf`);
+  const outputPath = path.resolve(
+    __dirname,
+    filesPath,
+    `${filename}_watermarked.pdf`,
+  );
 
   const main = async () => {
     const pdfdoc = await PDFNet.PDFDoc.createFromFilePath(inputPath);
@@ -234,13 +268,13 @@ app.get('/watermark/:filename-:watermark', (req, res) => {
     );
     const redColorPt = await PDFNet.ColorPt.init(1, 0, 0);
     stamper.setFontColor(redColorPt);
-    const pgSet = await PDFNet.PageSet.createRange(1, await pdfdoc.getPageCount());
+    const pgSet = await PDFNet.PageSet.createRange(
+      1,
+      await pdfdoc.getPageCount(),
+    );
     stamper.stampText(pdfdoc, watermark, pgSet);
 
-    pdfdoc.save(
-      outputPath,
-      PDFNet.SDFDoc.SaveOptions.e_linearized,
-    );
+    pdfdoc.save(outputPath, PDFNet.SDFDoc.SaveOptions.e_linearized);
   };
 
   PDFNetEndpoint(main, outputPath, res);
@@ -261,7 +295,7 @@ const PDFNetEndpoint = (main, pathname, res) => {
         }
       });
     })
-    .catch((error) => {
+    .catch(error => {
       res.statusCode = 500;
       res.end(error);
     });

files/document.docx.pdf

@@ -0,0 +1,97 @@
+<html>
+<head>
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<style>
+body {
+  font-family: Arial, Helvetica, sans-serif;
+  background-color: black;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+/* Add padding to containers */
+.container {
+  padding: 16px;
+  background-color: white;
+}
+
+/* Full-width input fields */
+input[type=text], input[type=password] {
+  width: 100%;
+  padding: 15px;
+  margin: 5px 0 22px 0;
+  display: inline-block;
+  border: none;
+  background: #f1f1f1;
+}
+
+input[type=text]:focus, input[type=password]:focus {
+  background-color: #ddd;
+  outline: none;
+}
+
+/* Overwrite default styles of hr */
+hr {
+  border: 1px solid #f1f1f1;
+  margin-bottom: 25px;
+}
+
+/* Set a style for the submit button */
+.registerbtn {
+  background-color: #4CAF50;
+  color: white;
+  padding: 16px 20px;
+  margin: 8px 0;
+  border: none;
+  cursor: pointer;
+  width: 100%;
+  opacity: 0.9;
+}
+
+.registerbtn:hover {
+  opacity: 1;
+}
+
+/* Add a blue text color to links */
+a {
+  color: dodgerblue;
+}
+
+/* Set a grey background color and center the text of the "sign in" section */
+.signin {
+  background-color: #f1f1f1;
+  text-align: center;
+}
+</style>
+</head>
+<body>
+
+<form action="/action_page.php">
+  <div class="container">
+    <h1>Register</h1>
+    <p>Please fill in this form to create an account.</p>
+    <hr>
+
+    <label for="email"><b>Email</b></label>
+    <input type="text" placeholder="Enter Email" name="email" id="email" required>
+
+    <label for="psw"><b>Password</b></label>
+    <input type="password" placeholder="Enter Password" name="psw" id="psw" required>
+
+    <label for="psw-repeat"><b>Repeat Password</b></label>
+    <input type="password" placeholder="Repeat Password" name="psw-repeat" id="psw-repeat" required>
+    <hr>
+    <p>By creating an account you agree to our <a href="#">Terms & Privacy</a>.</p>
+
+    <button type="submit" class="registerbtn">Register</button>
+  </div>
+  
+  <div class="container signin">
+    <p>Already have an account? <a href="#">Sign in</a>.</p>
+  </div>
+</form>
+
+</body>
+</html>