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WPUpdates Theme Updater Class (with Envato API verification)
<?php
/*
WPUpdates Theme Updater Class (with Envato API verification)
http://wp-updates.com
v1.1
Example Usage:
require_once('wp-updates-theme.php');
new WPUpdatesThemeUpdater( 'http://wp-updates.com/api/1/theme', 1, basename(get_template_directory()) );
*/
if( !class_exists('WPUpdatesThemeUpdater') ) {
class WPUpdatesThemeUpdater {
var $api_url;
var $theme_id;
var $theme_slug;
function __construct( $api_url, $theme_id, $theme_slug ) {
$this->api_url = $api_url;
$this->theme_id = $theme_id;
$this->theme_slug = $theme_slug;
add_filter( 'pre_set_site_transient_update_themes', array(&$this, 'check_for_update') );
// This is for testing only!
set_site_transient('update_themes', null);
// Add notice that theme update is available
if( get_option( 'wpu_'. $this->theme_slug .'_update_available' ) ){
add_action( 'admin_notices', array(&$this, 'update_notice') );
}
}
function check_for_update( $transient ) {
if (empty($transient->checked)) return $transient;
/* Envato Verify Purchase */
$envato_username = ''; // your envato username
$envato_api_key = ''; // your envato API key
$envato_purchase_code = get_option('envato_purchase_code'); // the purchase code setting in your theme options
$response = wp_remote_get( 'http://marketplace.envato.com/api/v3/'. $envato_username .'/'. $envato_api_key .'/verify-purchase:'. $envato_purchase_code .'.json' );
if( is_wp_error( $response ) ) {
return $transient;
} else {
$json_data = json_decode($response['body'], true);
if(!isset($json_data['verify-purchase']['item_name'])){
update_option( 'wpu_'. $this->theme_slug .'_update_available', true );
return $transient;
}
}
/* End Envato Verify Purchase */
$request_args = array(
'id' => $this->theme_id,
'slug' => $this->theme_slug,
'version' => $transient->checked[$this->theme_slug]
);
$request_string = $this->prepare_request( 'theme_update', $request_args );
$raw_response = wp_remote_post( $this->api_url, $request_string );
$response = null;
if( !is_wp_error($raw_response) && ($raw_response['response']['code'] == 200) )
$response = unserialize($raw_response['body']);
if( !empty($response) ) // Feed the update data into WP updater
$transient->response[$this->theme_slug] = $response;
return $transient;
}
function prepare_request( $action, $args ) {
global $wp_version;
return array(
'body' => array(
'action' => $action,
'request' => serialize($args),
'api-key' => md5(home_url())
),
'user-agent' => 'WordPress/'. $wp_version .'; '. home_url()
);
}
function update_notice(){
global $pagenow;
// Change this to a theme setting page URL where users
// can enter their ThemeForest purchase code
$theme_settings_link = admin_url( 'themes.php' );
if ( $pagenow == 'themes.php' || $pagenow == 'update-core.php' ) {
$theme_name = 'current';
if( function_exists('wp_get_theme') ) $theme_name = '<strong>'. wp_get_theme() .'</strong>';
echo '<div class="updated">
<p>'. __( 'There is an update availble for the '. $theme_name .' theme, but your ThemeForest purchase code is invalid.' ) .' <a href="'. $theme_settings_link .'">'. __( 'Update settings' ) .'</a></p>
</div>';
}
}
}
}
?>
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