Compare Two or More PowerPoint Presentations using a REST API in Node.js.

ComparePPTX_NodeJs.md

Learn how to compare two or more PowerPoint presentations using a REST API in Node.js:https://blog.groupdocs.cloud/2022/01/14/compare-powerpoint-presentations-in-node-js/

The following topics shall be covered in this article:

1. REST API and Node.js SDK to Compare PPTX Files
2. Compare Two PowerPoint Presentations using a REST API in Node.js
3. Compare Multiple PowerPoint Files using Node.js
4. Get List of Changes using REST API in Node.js

ComparePPTX_NodeJs_CompareMultipleFiles.js

// This code example demonstrates how to compare multiple PPTX files
// Initialize api
let compareApi = groupdocs_comparison_cloud.CompareApi.fromKeys(clientId, clientSecret);

// Source file
let source = new groupdocs_comparison_cloud.FileInfo();
source.filePath = "source.pptx";

// Target file 1
let target1 = new groupdocs_comparison_cloud.FileInfo();
target1.filePath = "target.pptx";

// Target file 2
let target2 = new groupdocs_comparison_cloud.FileInfo();
target2.filePath = "target2.pptx";

// Define compare options
let options = new groupdocs_comparison_cloud.ComparisonOptions();
options.sourceFile = source;
options.targetFiles = [target1, target2];
options.outputPath = "result_Multiple.pptx";

// Create comparison request
let request = new groupdocs_comparison_cloud.ComparisonsRequest(options);

// Compare
let response = await compareApi.comparisons(request);
console.log("Output file link: " + response.href);

ComparePPTX_NodeJs_CompareTwoFiles.js

// This code example demonstrates how to compare two PPTX files
// Initialize api
let compareApi = groupdocs_comparison_cloud.CompareApi.fromKeys(clientId, clientSecret);

// Source file
let source = new groupdocs_comparison_cloud.FileInfo();
source.filePath = "source.pptx";

// Target file
let target = new groupdocs_comparison_cloud.FileInfo();
target.filePath = "target.pptx";

// Define compare settings
let settings = new groupdocs_comparison_cloud.Settings();

// Compare sensitivity
settings.sensitivityOfComparison = 100;

// Define compare options
let options = new groupdocs_comparison_cloud.ComparisonOptions();
options.sourceFile = source;
options.targetFiles = [target];
options.outputPath = "result.pptx";
options.settings = settings;

// Create comparison request
let request = new groupdocs_comparison_cloud.ComparisonsRequest(options);

// Compare
let response = await compareApi.comparisons(request);
console.log("Output file link: " + response.href);

ComparePPTX_NodeJs_Configurations.js

// This code example demonstrates how to add Client ID and Secret in the code.
global.ClientId = "659fe7da-715b-4744-a0f7-cf469a392b73";
global.ClientSecret = "b377c36cfa28fa69960ebac6b6e36421";
global.myStorage = "";

const config = new groupdocs_comparison_cloud.Configuration(clientId, clientSecret);
config.apiBaseUrl = "https://api.groupdocs.cloud";

ComparePPTX_NodeJs_Download.js

// This code example demonstrates how to download PPTX file from the cloud.
// Construct FileApi
let fileApi = groupdocs_comparison_cloud.FileApi.fromConfig(config);

// Create download file request
let request = new groupdocs_comparison_cloud.DownloadFileRequest("result.pptx", myStorage);

// Download file
let response = await fileApi.downloadFile(request);

// Save in the working directory
fs.writeFile("C:\\Files\\comparison\\result.pptx", response, "binary", function (err) { });

ComparePPTX_NodeJs_GetListOfChanges.js

// This code example demonstrates how to get list of all the changes.
// Initialize api
let compareApi = groupdocs_comparison_cloud.CompareApi.fromKeys(clientId, clientSecret);

// Source file
let source = new groupdocs_comparison_cloud.FileInfo();
source.filePath = "source.pptx";

// Target file
let target = new groupdocs_comparison_cloud.FileInfo();
target.filePath = "target.pptx";

// Define compare options
let options = new groupdocs_comparison_cloud.ComparisonOptions();
options.sourceFile = source;
options.targetFiles = [target];
options.outputPath = "result.pptx";

// Create comparison request
let request = new groupdocs_comparison_cloud.PostChangesRequest(options);
let changes = await compareApi.postChanges(request);

// Show results
console.log("Changes count: " + changes.length);

changes.forEach(change => {
  console.log(change.id + 1 +"- Target Text: " + change.targetText + ", Text: " + change.text + ", Type: " + change.type);
});

ComparePPTX_NodeJs_Upload.js

// This code example demonstrates how to upload multiple files to the cloud.
// Construct FileApi
let fileApi = groupdocs_comparison_cloud.FileApi.fromConfig(config);
let resourcesFolder = 'C:\\Files\\comparison\\upload\\';

fs.readdir(resourcesFolder, (err, files) => {
  files.forEach(file => {
    // Read file
    fs.readFile(resourcesFolder + file, (err, fileStream) => {
      // Upload file request
      let request = new groupdocs_comparison_cloud.UploadFileRequest(file, fileStream, myStorage);
      // Upload file
      fileApi.uploadFile(request);
    });
  });
});