Access Google Contact API with PHP Codeigniter

Question

Are there any posts/tutorials about accessing Google Contact API with CodeIgniter framework?
I have googled it a lot found just one post which using Zend Libraries with Codeigniter.
Went through some PHP implementation of Contact API. But all of them are using Curl to talk to API.
Can I use the same way as a Codeigniter model class? or should I consider accessing gmail contacts using javascript?

Please help.

Answer 1

I used oauth library for codeigniter http://getsparks.org/packages/oauth2/versions/HEAD/show

set scope in the spark->oauth->libries->provider->google like

public function __construct(array $options = array()) {
    // Now make sure we have the default scope to get user data
    empty($options['scope']) and $options['scope'] = array(
        'https://www.googleapis.com/auth/userinfo.profile',
        'https://www.googleapis.com/auth/userinfo.email',
        'https://www.google.com/m8/feeds',
    );

Add following code in the same file

public function curl_file_get_contents($email, OAuth2_Token_Access $token) {
    $url = "https://www.google.com/m8/feeds/contacts/$email/full?max-results=" . 25 . "&oauth_token=" . $token->access_token;
    $curl = curl_init();
    $userAgent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)';
    curl_setopt($curl, CURLOPT_URL, $url); //The URL to fetch. This can also be set when initializing a session with curl_init().
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); //TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
    curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5); //The number of seconds to wait while trying to connect. 

    curl_setopt($curl, CURLOPT_USERAGENT, $userAgent); //The contents of the "User-Agent: " header to be used in a HTTP request.
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE); //To follow any "Location: " header that the server sends as part of the HTTP header.
    curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE); //To automatically set the Referer: field in requests where it follows a Location: redirect.
    curl_setopt($curl, CURLOPT_TIMEOUT, 10); //The maximum number of seconds to allow cURL functions to execute.
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); //To stop cURL from verifying the peer's certificate.
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);

    $contents = curl_exec($curl);
    curl_close($curl);

    return $contents;
}

then used this code for the google contant in controller

public function google() {
        $this->load->helper('url_helper');
        $this->load->spark('oauth2');
        $provider = $this->oauth2->provider('google', array(
            'id' => GOOGLE_APP_ID,
            'secret' => GOOGLE_APP_SECRET,
                ));

        if (!$this->input->get('code')) {
            // By sending no options it'll come back here
            $provider->authorize();
        } else {
            // Howzit?
            try {
                $token = $provider->access($_GET['code']);

                $user = $provider->get_user_info($token);
                $email = $user['email'];

                $xmlresponse = $provider->curl_file_get_contents($email, $token);
                if ((strlen(stristr($xmlresponse, 'Authorization required')) > 0) && (strlen(stristr($xmlresponse, 'Error ')) > 0)) {
                    echo "<h2>OOPS !! Something went wrong. Please try reloading the page.</h2>";
                    exit();
                }
                $xml = new SimpleXMLElement($xmlresponse);
                $xml->registerXPathNamespace('gd', 'http://schemas.google.com/g/2005');
                $result = $xml->xpath('//gd:email');
                $this->data['email_address'] = $result;
print_r($result);exit;
            } catch (OAuth2_Exception $e) {
                show_error('That didnt work: ' . $e);
            }
        }

    }