(Node.js) Page Through All Contacts

Demonstrates how to page through the entire list of Google Contacts.

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..
    // ----------------------------------------------

    var startIndex = 1;
    var maxResults = 25;
    // The totalResults will get updated with the correct value in the 1st loop iteration..
    var totalResults = 100;
    // To retrieve the contacts in pages of 25 each, we need to send the following for each page.

    // 	GET /m8/feeds/contacts/default/full?max-results=25&start-index=<startIndex>
    // 	GData-Version: 3.0

    var sbMaxResults = new chilkat.StringBuilder();
    sbMaxResults.AppendInt(maxResults);
    var sbStartIndex = new chilkat.StringBuilder();

    var loopIteration = 0;
    while (startIndex <= totalResults) {

        sbStartIndex.Clear();
        sbStartIndex.AppendInt(startIndex);

        rest.ClearAllHeaders();
        rest.ClearAllQueryParams();
        rest.AddHeader("GData-Version","3.0");
        rest.AddQueryParam("start-index",sbStartIndex.GetAsString());
        rest.AddQueryParam("max-results",sbMaxResults.GetAsString());

        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);

        // 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.
        totalResults = xml.GetChildIntValue("openSearch:totalResults");
        var startIndex2 = xml.GetChildIntValue("openSearch:startIndex");
        var itemsPerPage = xml.GetChildIntValue("openSearch:itemsPerPage");
        console.log("totalResults = " + totalResults);
        console.log("startIndex = " + startIndex2);
        console.log("itemsPerPage = " + itemsPerPage);

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

            var idUrl = xml.GetChildContent("entry[i]|id");
            console.log("id: " + idUrl);

            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);
            }

            // Find the photo link and check to see if this contact has a photo.
            // xLink: Xml
            var xLink = xml.GetChildWithAttr("link","rel","http://schemas.google.com/contacts/2008/rel#photo");
            if (xml.LastMethodSuccess == true) {
                // Get the photo etag.
                var bHasPhoto = xLink.HasAttribute("gd:etag");
                if (bHasPhoto == true) {
                    console.log("This contact has a photo.");
                }

            }

            i = i+1;
        }

        startIndex = startIndex+maxResults;
        loopIteration = loopIteration+1;
    }


}

chilkatExample();