//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2023 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------


const { PDFNet } = require('@pdftron/pdfnet-node');
const PDFTronLicense = require('../LicenseKey/LicenseKey');

((exports) => {
  'use strict';

  exports.runDigitalSignatureTest = () => {

    const input_path = '../../TestFiles/';
    const output_path = '../../TestFiles/Output/';

    const SignAndTSAPDF = async (in_docpath, in_approval_field_name, in_private_key_file_path, in_keyfile_password, in_appearance_img_path, in_timestamp_authority_root_certificate_path, in_outpath) => {

      const doc = await PDFNet.PDFDoc.create();
      let page = await doc.pageCreate();
      await doc.pagePushBack(page);

      const digsig_field = await doc.createDigitalSignatureField(in_approval_field_name);
      const widgetAnnot = await PDFNet.SignatureWidget.createWithDigitalSignatureField(doc, new PDFNet.Rect(143, 287, 219, 306), digsig_field);
      const img = await PDFNet.Image.createFromFile(doc, in_appearance_img_path);
      await widgetAnnot.createSignatureAppearance(img);
      await page.annotPushBack(widgetAnnot);

      // Create a digital signature dictionary inside the digital signature field, in preparation for signing.
      await digsig_field.createSigDictForCustomSigning("Adobe.PPKLite", PDFNet.DigitalSignatureField.SubFilterType.e_adbe_pkcs7_detached,
        8200); // For security reasons, set the contents size to a value greater than but as close as possible to the size you expect your final signature to be, in bytes.

      await doc.save(in_outpath, PDFNet.SDFDoc.SaveOptions.e_incremental);

      const pdf_digest = await digsig_field.calculateDigest(PDFNet.DigestAlgorithm.Type.e_SHA256);

      const signature_value = await PDFNet.DigitalSignatureField.signDigestPath(pdf_digest, in_private_key_file_path, in_keyfile_password, false, PDFNet.DigestAlgorithm.Type.e_SHA256);

      await doc.saveCustomSignature(signature_value, digsig_field, in_outpath);

      // Add embedded timestamp to signature.
      const tst_config = await PDFNet.TimestampingConfiguration.createFromURL('http://rfc3161timestamp.globalsign.com/advanced');
      const opts = await PDFNet.VerificationOptions.create(PDFNet.VerificationOptions.SecurityLevel.e_compatibility_and_archiving);
      await opts.addTrustedCertificateUString(in_timestamp_authority_root_certificate_path);
      await opts.enableOnlineCRLRevocationChecking(true);
      const result = await digsig_field.generateContentsWithEmbeddedTimestamp(tst_config, opts);
      if (await result.getStatus()) {
        console.log('Saving...');
        await doc.saveCustomSignature(await result.getData(), digsig_field, in_outpath);
      }
      else {
        console.log(await result.getString());
      }
      console.log('================================================================================');
    }

    const main = async () => {
      var ret = 0;

      console.log(await PDFNet.getVersionString());

      try {
        await SignAndTSAPDF(input_path + 'waiver_withApprovalField.pdf',
        'PDFTronApprovalSig',
        input_path + 'pdftron.pfx',
        'password',
        input_path + 'pdftron.bmp',
        input_path + 'GlobalSignRootForTST.cer',
        output_path + 'waiver_withApprovalField_certified_output_TSA.pdf');
      } catch (err) {
        console.log(err);
        ret = 1;
      }

      //////////////////// End of tests. ////////////////////
      if (!ret) {
        console.log('Tests successful.\n==========');
      }
      else {
        console.log('Tests FAILED!!!\n==========');
      }
    };

    PDFNet.runWithCleanup(main, PDFTronLicense.Key).catch(function (error) {
      console.log('Error: ' + JSON.stringify(error));
    }).then(function () { return PDFNet.shutdown(); });
  };
  exports.runDigitalSignatureTest();
})(exports);
// eslint-disable-next-line spaced-comment
//# sourceURL=DigitalSignatureTest.js