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<?php

/**

* Plausible Analytics | Actions.

* @since 1.0.0

* @package WordPress

* @subpackage Plausible Analytics

*/

namespace Plausible\Analytics\WP;

class Verification {

/**

* Build class.

* @return void

* @since 1.0.0

*/

public function __construct( $init = true ) {

if ( $init ) {

$this->init();

}

}

/**

* Plugin actions/hooks

* @return void

*/

private function init() {

add_action( 'wp_head', [ $this, 'maybe_insert_version_meta_tag' ] );

}

/**

* This <meta> tag "tells" the Plausible API which version of the plugin is used, to allow tailored error messages,

* specific to the plugin version.

*

* @return void

*/

public function maybe_insert_version_meta_tag() {

$running_verification = array_key_exists( 'plausible_verification', $_GET );

if ( ! $running_verification ) {

return;

}

$version = $this->get_plugin_version();

if ( $version ) {

echo "<meta name='plausible-analytics-version' content='$version' />\n";

}

}

/**

* Retrieves the plugin's current version.

*/

private function get_plugin_version() {

if ( ! function_exists( 'get_plugin_data' ) ) {

require_once ABSPATH . 'wp-admin/includes/plugin.php'; // @codeCoverageIgnore

}

static $data = null;

if ( $data === null ) {

$data = get_plugin_data( PLAUSIBLE_ANALYTICS_PLUGIN_FILE );

}

return $data['Version'] ?? '';

}

}