(Node.js) ChartURL - Create a Signed URL

Demonstrates how to create a signed URL for ChartURL.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var crypt = new chilkat.Crypt2();

    // Example key: "dek-d7a46236eda961a6c3c18ffcc6b077ba87d27e9ae85f7842c6d427c265dd5f69d5131308d93332353d4a55a4b1160fcf516515a4a9f0aa50fbf2d7a2e7d0f1c5"
    var key = "charturl-sign-encrypt-key";
    // Example token: "dt-RwYN"
    var token = "charturl-token";

    var slug = "weekly-activity";
    var data = "{ \"options\": {\"data\": {\"columns\": [[\"This Week\",10,13],[\"Last Week\",9,5]]}}}";

    crypt.HashAlgorithm = "SHA256";
    crypt.MacAlgorithm = "HMAC";
    crypt.SetMacKeyString(key);
    crypt.EncodingMode = "base64";

    var json = new chilkat.JsonObject();
    json.Load(data);
    console.log("json = " + json.Emit());

    var sig = crypt.MacStringENC(json.Emit());

    var sbUrl = new chilkat.StringBuilder();
    sbUrl.Append("https://charturl.com/i/");
    sbUrl.Append(token);
    sbUrl.Append("/");
    sbUrl.Append(slug);
    sbUrl.Append("?d=");
    sbUrl.Append(crypt.EncodeString(json.Emit(),"utf-8","url"));
    sbUrl.Append("&s=");
    sbUrl.Append(crypt.EncodeString(sig,"utf-8","url"));

    console.log("Signed URL: " + sbUrl.GetAsString());

}

chilkatExample();