Initial commit

<?php

require_once(ABSPATH . '/vendor/autoload.php');

class GAPageStats {

    private static $instance = null;

    private $view_id = null;

    private $analytics = null;

    protected function __construct() {

        $ga_options = get_option('ga_page_stats_options');

        $this->view_id = $ga_options['view_id'];

        $client = new Google_Client();

        $client->setApplicationName("Hello Analytics Reporting");

        $client->setAuthConfig($ga_options['key_file']);

        $client->setScopes(['https://www.googleapis.com/auth/analytics.readonly']);

        $this->analytics = new Google_Service_AnalyticsReporting($client);

    }

    protected function __clone() { }

    public function __wakeup() {

        throw new Exception("Cannot unserialize a singleton.");

    }

    protected static function getInstance(): GAPageStats {

        if (self::$instance == NULL)

            self::$instance = new static();

        return self::$instance;

    }

    public static function getPageStats($path) {

        $ga = self::getInstance();

        // Create the DateRange object.

        $dateRange = new Google_Service_AnalyticsReporting_DateRange();

        $dateRange->setStartDate("2012-11-01");

        $dateRange->setEndDate("today");

        // Create the page views metric.

        $pageViews = new Google_Service_AnalyticsReporting_Metric();

        $pageViews->setExpression("ga:pageviews");

        $pageViews->setAlias("Page Views");

        // Create the users metric.

        $users = new Google_Service_AnalyticsReporting_Metric();

        $users->setExpression("ga:users");

        $users->setAlias("Users");

        // Create the page path dimension.

        $pagePath = new Google_Service_AnalyticsReporting_Dimension();

        $pagePath->setName("ga:pagePath");

        // Create the ReportRequest object.

        $request = new Google_Service_AnalyticsReporting_ReportRequest();

        $request->setViewId($ga->view_id);

        $request->setDateRanges($dateRange);

        $request->setDimensions(array($pagePath));

        $request->setMetrics(array($pageViews, $users));

        $request->setFiltersExpression("ga:pagePath=~" . $path);

        $body = new Google_Service_AnalyticsReporting_GetReportsRequest();

        $body->setReportRequests(array($request));

        $reports = $ga->analytics->reports->batchGet($body);

        if (count($reports) == 0)

            return [0, 0];

        $report = $reports[0];

        $rows = $report->getData()->getRows();

        if (count($rows) == 0)

            return [0, 0];

        $row = $rows[0];

        $metrics = $row->getMetrics();

        $values = $metrics[0]->getValues();

        return [ $values[0], $values[1] ];

    }

}

<?php

/**

 * @package Google_Analytics_Page_Stats

 * @version 0.0.1

 */

/*

Plugin Name: Google Analytics Page Stats

Plugin URI: https://aztlan.fciencias.unam.mx/gitlab/google_analytics_page_stats/

Description: This plugin offers an object to get the page stats from Google Analytics; it needs configuration from a Google Analytics account.

Author: Canek Peláez

Version: 0.0.1

Author URI: https://aztlan.fciencias.unam.mx/~canek/

*/

define('GA_PAGE_STATS__PLUGIN_DIR', plugin_dir_path(__FILE__));

require_once(GA_PAGE_STATS__PLUGIN_DIR . 'class.ga-page-stats.php');

add_action('admin_menu', 'ga_page_stats_menu');

function ga_page_stats_menu() {

    add_options_page('Google Analytics', 'Google Analytics', 'manage_options',

                     'google-analytics-page-stats/options.php') ;

}

function ga_page_stats_content_filter($content) {

    if (!is_singular() || !current_user_can('administrator'))

        return $content;

    $r = GAPageStats::getPageStats($_SERVER['REQUEST_URI']);

    $spv = number_format($r[0]);

    $su = number_format($r[1]);

    return $content . '<span style="font-size:small;"><em>Vistas: ' . $spv . '</em> | ' .

        '<em>Usuarios: ' . $su . '</em> | </span>';

}

add_filter('the_content', 'ga_page_stats_content_filter');

register_activation_hook(__FILE__, 'ga_page_stats_activation');

function ga_page_stats_activation($network_wide) {

	// Add Options

	$option_name = 'ga_page_stats_options';

	$option = array('view_id' => '', 'key_file' => '');

	if (is_multisite() && $network_wide) {

		$ms_sites = function_exists('get_sites') ? get_sites() : wp_get_sites();

		if (0 < count($ms_sites)) {

			foreach ($ms_sites as $ms_site) {

				$blog_id = isset($ms_site['blog_id']) ?

                    $ms_site['blog_id'] : $ms_site->blog_id;

				switch_to_blog($blog_id);

				add_option($option_name, $option);

			}

		}

		restore_current_blog();

	} else {

		add_option($option_name, $option);

	}

}

<?php

# Silence is golden.

 No newline at end of file

<?php

if(!empty($_POST['Submit'])) {

    check_admin_referer('ga-page-stats_options');

    $ga_options = array();

    $ga_options['view_id']  = !empty($_POST['view_id_text']) ?

        addslashes(trim(wp_filter_kses($_POST['view_id_text']))) : '';

    $ga_options['key_file'] = !empty($_POST['key_file_text']) ?

        addslashes(trim(wp_filter_kses($_POST['key_file_text']))) : '';

    $update_ga_queries = array();

    $update_ga_text = array();

    $update_ga_queries[] = update_option('ga_page_stats_options', $ga_options);

    $update_ga_text[] = 'Estadísticas de página con Google Analytics';

    $i = 0;

    $text = '';

    foreach ($update_ga_queries as $update_ga_query) {

        if ($update_ga_query) {

            $text .= '<p style="color: green;">' . $update_ga_text[$i] .

                ' ' . 'Actualizado' . '</p>';

        }

        $i++;

    }

    if (empty($text)) {

        $text = '<p style="color: red;">' . 'Ninguna opción actualizada' . '</p>';

    }

}

$ga_options = get_option('ga_page_stats_options');

if (!empty($text)) {

    echo '<!-- Last Action --><div id="message" ' .

        'class="updated fade"><p>' . $text . '</p></div>';

}

?>

<form method="post" action="<?php echo admin_url('admin.php?page='.plugin_basename(__FILE__)); ?>">

  <?php wp_nonce_field('ga-page-stats_options'); ?>

  <div class="wrap">

    <h2>Estadísticas de página con Google Analytics</h2>

    <table class="form-table">

      <tr>

        <th scope="row" valign="top">Identificador de vista</th>

        <td>

          <input type="text" name="view_id_text"

                 value="<?php echo stripslashes($ga_options['view_id']); ?>"

                 size="30" />

        </td>

      </tr>

      <tr>

        <th scope="row" valign="top">Archivo con llave</th>

          <td>

            <input type="text" name="key_file_text"

                   value="<?php echo stripslashes($ga_options['key_file']); ?>"

                   size="30" />

          </td>

        </tr>

      <tr>

    </table>

    <p class="submit">

      <input type="submit" name="Submit" class="button"

             value="Salvar cambios" />

    </p>

  </div>

</form>

<?php

if (!defined('WP_UNINSTALL_PLUGIN'))

    exit();

$option_name = 'ga_page_stats_options';

if (is_multisite()) {

    $ms_sites = function_exists('get_sites') ? get_sites() : wp_get_sites();

    if (0 < sizeof($ms_sites)) {

        foreach ($ms_sites as $ms_site) {

            $blog_id = isset($ms_site['blog_id']) ?

                $ms_site['blog_id'] : $ms_site->blog_id;

            switch_to_blog($blog_id);

            delete_option($option_name);

        }

    }

    restore_current_blog();

} else {

    delete_option($option_name);

}