(Node.js) Find Contact Having Email Address

Demonstrates how to fetch the Google Contact for a given email address.

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

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    // --------------------------------------------------------------------------------------------------------
    // Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
    // Once connected, the REST object may be re-used for many REST API calls.
    // (It's a good idea to put the connection setup code in a separate function/subroutine.)
    // --------------------------------------------------------------------------------------------------------

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get Google Contacts OAuth2 Access Token

    var jsonToken = new chilkat.JsonObject();
    var success = jsonToken.LoadFile("qa_data/tokens/googleContacts.json");
    if (success !== true) {
        console.log("Failed to load googleContacts.json");
        return;
    }

    var gAuth = new chilkat.AuthGoogle();
    gAuth.AccessToken = jsonToken.StringOf("access_token");

    var rest = new chilkat.Rest();

    // Connect using TLS.
    var bAutoReconnect = true;
    success = rest.Connect("www.google.com",443,true,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access token)
    rest.SetAuthGoogle(gAuth);

    // ----------------------------------------------
    // OK, the REST connection setup is completed..
    // ----------------------------------------------

    // To retrieve the contacts, we need to send the following:

    // 	GET /m8/feeds/contacts/default/full?q=<emailAddress>
    // 	GData-Version: 3.0

    // Get the contact (or contacts) with this email address:
    var emailAddressToFind = "admin@chilkatsoft.com";

    rest.AddHeader("GData-Version","3.0");
    rest.AddQueryParam("q",emailAddressToFind);

    var sbResponseBody = new chilkat.StringBuilder();
    success = rest.FullRequestNoBodySb("GET","/m8/feeds/contacts/default/full",sbResponseBody);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (rest.ResponseStatusCode !== 200) {
        console.log("response status code = " + rest.ResponseStatusCode);
        console.log("response status text = " + rest.ResponseStatusText);
        console.log("response header: " + rest.ResponseHeader);
        console.log("response body: " + sbResponseBody.GetAsString());
        return;
    }

    // If the 200 response was received, then the contacts XML is contained
    // in the response body.
    var xml = new chilkat.Xml();
    xml.LoadSb(sbResponseBody,false);

    // See below for a sample response body.
    xml.SaveXml("qa_output/google_contacts.xml");

    // Now let's parse the XML...

    // Get the the total number of results, the start index, and the items per page.
    // We'll likely NOT get the full list, but will instead get the 1st page.
    var totalResults = xml.GetChildIntValue("openSearch:totalResults");
    var startIndex = xml.GetChildIntValue("openSearch:startIndex");
    var itemsPerPage = xml.GetChildIntValue("openSearch:itemsPerPage");
    console.log("totalResults = " + totalResults);
    console.log("startIndex = " + startIndex);
    console.log("itemsPerPage = " + itemsPerPage);

    // We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop)
    var fac = new chilkat.FileAccess();

    // Iterate over each contact.
    var numEntries = xml.NumChildrenHavingTag("entry");
    var i = 0;
    while (i < numEntries) {
        xml.I = i;
        console.log((i+1) + " ----");
        console.log("title: " + xml.GetChildContent("entry[i]|title"));

        // The entry "id" child contains a URL having this format:
        // <id>http://www.google.com/m8/feeds/contacts/{userEmail}/base/{contactId}</id>
        // Let's get the URL and parse the contactId from it..
        var idUrl = xml.GetChildContent("entry[i]|id");
        console.log("id: " + idUrl);

        // Use the parsing ability of GetFileName to get the contactId
        var contactId = fac.GetFileName(idUrl);
        console.log("contactId: " + contactId);

        var fullName = xml.ChilkatPath("entry[i]|gd:name|gd:fullName|*");
        if (xml.LastMethodSuccess == true) {
            console.log("fullName: " + fullName);
        }

        var emailAddress = xml.ChilkatPath("entry[i]|gd:email|(address)");
        if (xml.LastMethodSuccess == true) {
            console.log("email address: " + emailAddress);
        }

        i = i+1;
    }


}

chilkatExample();