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'use strict';

// Import the GroupDocs.Comparison for Node.js via Java SDK
const groupdocs = require('@groupdocs/groupdocs.comparison');

// Create a Comparer instance for the source document on disk
const comparer = new groupdocs.Comparer('sample-files/source.docx');

// Add the target document to be compared against the source
comparer.add('sample-files/target.docx');

// Perform the comparison (no result file path is required for retrieving changes)
comparer.compare();

// Retrieve the array of ChangeInfo objects that describe each change
const changes = comparer.getChanges();

// Iterate through the collection and print details of every change
for (let index = 0; index < changes.length; index++) {
  const change = changes[index];

  const page = change.getPageInfo().getPageNumber(); // Page number where the change is located
  const type = change.getType().name();              // Type of change (Inserted, Deleted, etc.)
  const text = (change.getText() || '').trim();      // Normalized change text
  const src = (change.getSourceText() || '').trim(); // Text from the source document
  const tgt = (change.getTargetText() || '').trim(); // Text from the target document

  console.log(`[Page ${page}] ${type} "${text}", "${src}" -> "${tgt}"`);
}

// Exit the process when printing is finished
process.exit(0);

'use strict';

// Import the GroupDocs.Comparison for Node.js via Java SDK
const groupdocs = require('@groupdocs/groupdocs.comparison');

// Import the Java bridge to work with FileInputStream
const java = require('java');
let InputStream = java.import('java.io.FileInputStream');

// Create input streams for the source and target documents
const sourceStream = new InputStream('sample-files/source.docx');
const targetStream = new InputStream('sample-files/target.docx');

// Create a Comparer instance using the source stream
const comparer = new groupdocs.Comparer(sourceStream);

// Add the target stream to be compared against the source
comparer.add(targetStream);

// Run the comparison to populate internal changes collection
comparer.compare();

// Retrieve the list of changes discovered during comparison
const changes = comparer.getChanges();

// Iterate through the collection and print detailed information about each change
for (let index = 0; index < changes.length; index++) {
  const change = changes[index];

  const page = change.getPageInfo().getPageNumber(); // Page number
  const type = change.getType().name();              // Change type
  const text = (change.getText() || '').trim();      // Combined change text
  const src = (change.getSourceText() || '').trim(); // Source text fragment
  const tgt = (change.getTargetText() || '').trim(); // Target text fragment

  console.log(`[Page ${page}] ${type} "${text}", "${src}" -> "${tgt}"`);
}

// Exit the process when all changes are printed
process.exit(0);