insertQrcode

dist/pdfParser.d.ts

@@ -5,5 +5,6 @@ declare class PDFparser {
     readonly config: any;
     constructor(document: Buffer);
     getPDFMeta: () => Promise<IgetMetaResponse>;
+    insertQrCode: (imgBytes: ArrayBuffer) => Promise<ArrayBuffer>;
 }
 export default PDFparser;

dist/pdfParser.js

@@ -15,6 +15,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const verify_pdf_1 = __importDefault(require("@ninja-labs/verify-pdf"));
 const pdfdataextract_1 = require("pdfdataextract");
 const config_1 = require("./config");
+const { PDFDocument } = require("pdf-lib");
 class PDFparser {
     constructor(document) {
         this.getPDFMeta = () => __awaiter(this, void 0, void 0, function* () {
@@ -44,6 +45,19 @@ class PDFparser {
                 throw new Error("Could not get pdf metadata");
             }
         });
+        this.insertQrCode = (imgBytes) => __awaiter(this, void 0, void 0, function* () {
+            const pdfDoc = yield PDFDocument.load(this.document);
+            const img = yield pdfDoc.embedPng(imgBytes);
+            const imagePage = pdfDoc.insertPage(0);
+            imagePage.drawImage(img, {
+                x: 0,
+                y: 0,
+                width: imagePage.getWidth(),
+                height: imagePage.getHeight(),
+            });
+            const pdfBytes = yield pdfDoc.save();
+            return pdfBytes;
+        });
         this.document = document;
         this.config = config_1.config;
     }

package.json

@@ -38,6 +38,7 @@
   },
   "dependencies": {
     "@ninja-labs/verify-pdf": "^0.3.9",
+    "pdf-lib": "^1.17.1",
     "pdfdataextract": "^3.2.0"
   }
 }

src/pdfParser.ts

@@ -2,6 +2,7 @@ import verifyPDF from "@ninja-labs/verify-pdf";
 import { PdfData } from "pdfdataextract";
 import { config } from "./config";
 import { IgetMetaResponse } from "./types";
+const { PDFDocument } = require("pdf-lib");
 
 class PDFparser {
   readonly document;
@@ -39,6 +40,23 @@ class PDFparser {
       throw new Error("Could not get pdf metadata");
     }
   };
+
+  insertQrCode = async (imgBytes: ArrayBuffer): Promise<ArrayBuffer> => {
+    const pdfDoc = await PDFDocument.load(this.document);
+    const img = await pdfDoc.embedPng(imgBytes);
+    const imagePage = pdfDoc.insertPage(0);
+
+    imagePage.drawImage(img, {
+      x: 0,
+      y: 0,
+      width: imagePage.getWidth(),
+      height: imagePage.getHeight(),
+    });
+
+    const pdfBytes = await pdfDoc.save();
+
+    return pdfBytes;
+  };
 }
 
 export default PDFparser;

yarn.lock

@@ -1077,6 +1077,20 @@
   dependencies:
     node-forge "^0.10.0"
 
+"@pdf-lib/standard-fonts@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@pdf-lib/standard-fonts/-/standard-fonts-1.0.0.tgz#8ba691c4421f71662ed07c9a0294b44528af2d7f"
+  integrity sha512-hU30BK9IUN/su0Mn9VdlVKsWBS6GyhVfqjwl1FjZN4TxP6cCw0jP2w7V3Hf5uX7M0AZJ16vey9yE0ny7Sa59ZA==
+  dependencies:
+    pako "^1.0.6"
+
+"@pdf-lib/upng@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@pdf-lib/upng/-/upng-1.0.1.tgz#7dc9c636271aca007a9df4deaf2dd7e7960280cb"
+  integrity sha512-dQK2FUMQtowVP00mtIksrlZhdFXQZPC+taih1q4CvPZ5vqdxR/LKBaFg0oAfzd1GlHZXXSPdQfzQnt+ViGvEIQ==
+  dependencies:
+    pako "^1.0.10"
+
 "@sinonjs/commons@^1.7.0":
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
@@ -3864,6 +3878,11 @@ p-try@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
+pako@^1.0.10, pako@^1.0.11, pako@^1.0.6:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
+  integrity sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==
+
 parent-module@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/parent-module/-/parent-module-1.0.1.tgz#691d2709e78c79fae3a156622452d00762caaaa2"
@@ -3921,6 +3940,16 @@ path-type@^4.0.0:
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
+pdf-lib@^1.17.1:
+  version "1.17.1"
+  resolved "https://registry.yarnpkg.com/pdf-lib/-/pdf-lib-1.17.1.tgz#9e7dd21261a0c1fb17992580885b39e7d08f451f"
+  integrity sha512-V/mpyJAoTsN4cnP31vc0wfNA1+p20evqqnap0KLoRUN0Yk/p3wN52DOEsL4oBFcLdb76hlpKPtzJIgo67j/XLw==
+  dependencies:
+    "@pdf-lib/standard-fonts" "^1.0.0"
+    "@pdf-lib/upng" "^1.0.1"
+    pako "^1.0.11"
+    tslib "^1.11.1"
+
 pdfdataextract@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/pdfdataextract/-/pdfdataextract-3.2.0.tgz#c40d59fb0de4ed6e63a1da08f87d4f4550e841ec"
@@ -4769,7 +4798,7 @@ tr46@^2.0.2:
   dependencies:
     punycode "^2.1.1"
 
-tslib@^1.8.1, tslib@^1.9.0:
+tslib@^1.11.1, tslib@^1.8.1, tslib@^1.9.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==